Prospectus

December 20, 2019

Table of Contents

Fund Summaries

Invesco Premier Portfolio

interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the Fund's foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulty in enforcing obligations, decreased liquidity or increased volatility. Foreign investments also involve the risk of the possible seizure, nationalization or expropriation of the issuer or foreign deposits (in which the Fund could lose its entire investments in a certain market) and the possible adoption of foreign governmental restrictions such as exchange controls.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. The Fund may impose a fee upon the sale of your shares or may temporarily suspend your ability to sell shares if the Fund’s liquidity falls below required minimums because of market conditions or other factors. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund or maintain the Fund’s $1.00 share price at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments

that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. The Fund is subject to the risk that the counterparty may default on its obligation to repurchase the underlying instruments collateralizing the repurchase agreement, which may cause the Fund to lose money. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, which could result in a loss.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's website at www.invesco.com/us.

Investments in the Fund are limited to accounts beneficially owned by natural persons. You may purchase, redeem or exchange shares of the Fund on any business day through your financial adviser or by telephone at 800-959-4246. Shares of the Fund may also be purchased, redeemed or exchanged on any business day through our website at www.invesco.com/us or by mail to Invesco Investment Services, Inc., P.O. Box 219286, Kansas City, MO 64121-9286.

The minimum investments for Investor Class shares for fund accounts are as follows:

Tax Information

The Fund’s distributions generally are taxable to you as ordinary income, unless you are investing through a tax-advantaged arrangement, such as a 401(k) plan or individual retirement account. Any distributions from a 401(k) plan or individual retirement account may be taxed when withdrawn from such plan or account.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund, the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s website for more information.

Invesco Premier Tax-Exempt Portfolio

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Class:	Investor
Management Fees	0.25%
...
Distribution and/or Service (12b-1) Fees	None
...
Other Expenses	None
...
Total Annual Fund Operating Expenses	0.25
...
Fee Waiver and/or Expense Reimbursement1	0.05
...
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	0.20
...

1

Invesco Advisers, Inc. (Invesco or the Adviser) has contractually agreed to waive advisory fees equal to 0.05% of the average daily net assets of Invesco Premier Tax-Exempt Portfolio. Unless Invesco continues the fee waiver agreement, it will terminate on December 31, 2020. During its term, the fee waiver agreement cannot be terminated or amended to reduce the advisory fee waiver without approval of the Board of Trustees.

Example. This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain equal to the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in the first year and the Total Annual Fund Operating Expenses thereafter.

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

	1 Year	3 Years	5 Years	10 Years
Investor Class	$20	$75	$136	$313
...

Principal Investment Strategies of the Fund

The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in securities that (1) pay interest that is excluded from gross income for federal income tax purposes, and (2) do not produce income that will be considered to be an item of preference for purposes of the alternative minimum tax. While the Fund’s distributions are primarily exempt from federal income tax, a portion of the Fund’s distributions may be subject to the federal alternative minimum tax and state and local taxes.

In complying with the 80% investment requirement, the Fund may include other instruments that have economic characteristics similar to the Fund’s direct investments that are counted toward the 80% investment requirement.

The Fund may invest up to 20% of its net assets in money market instruments that may be subject to federal taxes, including Treasury securities, repurchase agreements, commercial paper, and U.S. dollar-denominated foreign securities.

The Fund invests only in high-quality U.S. dollar-denominated short-term debt obligations, including: (i) municipal securities; (ii) tax-exempt commercial paper; and (iii) cash equivalents. These securities may have credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. Municipal securities include debt obligations of states, territories and possessions of the United States and the District of Columbia, their political subdivisions, agencies, instrumentalities, authorities thereof, and multi-state agencies, issued to obtain funds for various public purposes. Municipal lease obligations, synthetic municipal securities (which include tender option bonds and variable rate instruments which are created when fixed rate bonds are coupled with a third party demand feature) and certain types of industrial revenue bonds are treated as municipal securities.

Other securities held by the Fund may be structured with demand features which have the effect of shortening the security’s maturity.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a money market fund that rounds the Fund’s current net asset value (NAV) per share to a minimum of the fourth decimal place. Although the Fund is a money market fund, the NAV of the Fund’s shares “floats,” fluctuating with changes in the values of the Fund’s portfolio securities. The Fund invests in conformity with U.S. Securities and Exchange Commission (SEC) rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 calendar days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 calendar days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 under the Investment Company Act of 1940, as amended (Rule 2a-7), of no more than 120 calendar days. Each investment must be determined to present minimal credit risks by Invesco Advisers, Inc.(Invesco or the Adviser) pursuant to guidelines approved by the Fund’s Board of Trustees (the Board), and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund’s investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

You could lose money by investing in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Alternative Minimum Tax Risk. A portion of the Fund’s otherwise tax-exempt income may be taxable to those shareholders subject to the federal alternative minimum tax.

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly), the supply of short-term financing, changes in government regulation, changes in interest rates, and economic downturns in the United States and abroad.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to

repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the Fund's foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulty in enforcing obligations, decreased liquidity or increased volatility. Foreign investments also involve the risk of the possible seizure, nationalization or expropriation of the issuer or foreign deposits (in which the Fund could lose its entire investments in a certain market) and the possible adoption of foreign governmental restrictions such as exchange controls.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Because the share price of the Fund will fluctuate, when you sell your shares they may be worth more or less than what you originally paid for them and you may lose money by investing in the Fund. The Fund may impose a fee upon the sale of your shares or may temporarily suspend your ability to sell shares if the Fund’s liquidity falls below required minimums because of market conditions or other factors. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. The Fund is subject to the risk that the counterparty may default on its obligation to repurchase the underlying instruments collateralizing the repurchase agreement, which may cause the Fund to lose money. These risks are magnified to the extent that a

repurchase agreement is secured by securities other than cash or U.S. Government securities.

Risk of Large Shareholder Redemptions. One or more shareholders hold or control a significant percentage of the Fund’s shares. Redemptions by such shareholder(s) may force the Fund to sell a significant portion of its holdings.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, which could result in a loss.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's website at www.invesco.com/us.

You may purchase, redeem or exchange shares of the Fund on any business day through your financial adviser or by telephone at 800-959-4246. Shares of the Fund may also be purchased, redeemed or exchanged on any business day through our website at www.invesco.com/us or by mail to Invesco Investment Services, Inc., P.O. Box 219286, Kansas City, MO 64121-9286.

The minimum investments for Investor Class shares for fund accounts are as follows:

Tax Information

The Fund’s distributions primarily are exempt from regular federal income tax. A portion of these distributions, however, may be subject to the federal alternative minimum tax and state and local taxes. The Fund may also make distributions that are taxable to you as ordinary income.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund, the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s website for more information.

Invesco Premier U.S. Government Money Portfolio

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Class:	Investor
Management Fees	0.25%
...
Distribution and/or Service (12b-1) Fees	None
...
Other Expenses	None
...
Total Annual Fund Operating Expenses	0.25
...
Fee Waiver and/or Expense Reimbursement1	0.07
...
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	0.18
...

1

Invesco Advisers, Inc. (Invesco or the Adviser) has contractually agreed to waive advisory fees equal to 0.07% of the average daily net assets of Invesco Premier U.S. Government Money Portfolio. Unless Invesco continues the fee waiver agreement, it will terminate on December 31, 2020. During its term, the fee waiver agreement cannot be terminated or amended to reduce the advisory fee waiver without approval of the Board of Trustees.

Example. This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain equal to the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in the first year and the Total Annual Fund Operating Expenses thereafter.

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

	1 Year	3 Years	5 Years	10 Years
Investor Class	$18	$73	$134	$311
...

Principal Investment Strategies of the Fund

The Fund invests at least 99.5% of its total assets in cash, Government Securities, and repurchase agreements collateralized by cash or Government Securities. In addition, at least 80% of the Fund’s net assets (plus any borrowings for investment purposes) will be invested, under normal circumstances, in (i) direct obligations of the U.S. Treasury, (ii) other securities issued or guaranteed as to principal and interest by the U.S. Government or its agencies and instrumentalities (agency securities) and (iii) repurchase agreements secured by those obligations referenced in (i) and (ii) above. In contrast to the Fund’s 99.5% policy, the Fund’s 80% policy does not include cash or repurchase agreements collateralized by cash. Government Security generally means any security issued or guaranteed as to principal or interest by the U.S. Government or certain of its agencies or instrumentalities; or any certificate of deposit for any of the foregoing.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a Government Money Market Fund as defined by Rule 2a-7 under the Investment Company Act of 1940, as amended (Rule 2a-7), that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with U.S. Securities and Exchange Commission (SEC) rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 calendar days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 calendar days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 calendar days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Fund’s Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

You could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund or maintain the Fund’s $1.00 share price at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility. While the Board of Trustees may implement procedures to impose a fee upon the sale of your shares or temporarily suspend your ability to sell shares in the future if the Fund’s

liquidity falls below required minimums because of market conditions or other factors, the Board has not elected to do so at this time. Should the Board elect to do so, such change would only become effective after shareholders were provided with specific advance notice of the change in the Fund’s policy and provided with the opportunity to redeem their shares in accordance with Rule 2a-7 before the policy change became effective.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's website at www.invesco.com/us.

You may purchase, redeem or exchange shares of the Fund on any business day through your financial adviser or by telephone at 800-959-4246. Shares of the Fund may also be purchased, redeemed or exchanged on any business day through our website at www.invesco.com/us or by mail to Invesco Investment Services, Inc., P.O. Box 219286, Kansas City, MO 64121-9286.

The minimum investments for Investor Class shares for fund accounts are as follows:

Tax Information

The Fund’s distributions generally are taxable to you as ordinary income, unless you are investing through a tax-advantaged arrangement, such as a 401(k) plan or individual retirement account. Any distributions from a 401(k) plan or individual retirement account may be taxed when withdrawn from such plan or account.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund, the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s website for more information.

the share value to the nearest cent. Retail Money Market Funds may be beneficially owned only by natural persons, as determined in the “Shareholder Account Information – Purchasing Shares” section in this Prospectus. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 calendar days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 calendar days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 calendar days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund’s investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly). Financial services companies may be dependent on the supply of short-term financing. The value of bank instruments and securities of issuers in the banking and financial services industry, or guaranteed by such issuers, can be affected by and sensitive to changes in government regulation and interest rates and to economic downturns in the United States and abroad. The risk of holding bank instruments is also directly tied to the risk of insolvency or bankruptcy of the issuing banks, which risk may be higher for larger or more complex financial institutions that combine traditional, commercial and investment banking.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the value of the Fund’s foreign investments may be adversely affected by political and social instability in their home countries, by changes in economic or taxation policies in those countries, or by the difficulty in enforcing obligations in those countries. Foreign companies generally may be subject to less stringent regulations than U.S. companies, including financial reporting requirements and auditing and accounting controls. As a result, there generally is less publicly available information about foreign companies than about U.S. companies. Trading in many foreign securities may be less liquid and more volatile than U.S. securities due to the size of the market or other factors.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the Adviser in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below

the $1.00 share price. The Fund may impose a fee upon the sale of your shares or may temporarily suspend your ability to sell shares if the Fund’s liquidity falls below required minimums because of market conditions or other factors. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund or maintain the Fund’s $1.00 share price at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Municipal obligations may be more susceptible to downgrades or defaults during recessions or similar periods of economic stress. Municipal securities structured as revenue bonds are generally not backed by the taxing power of the issuing municipality but rather the revenue from the particular project or entity for which the bonds were issued. If the Internal Revenue Service determines that an issuer of a municipal security has not complied with applicable tax requirements, interest from the security could be treated as taxable, which could result in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Invesco Premier Tax-Exempt Portfolio

Objective(s) and Strategies

The Fund’s investment objective is to provide tax-exempt income consistent with preservation of capital and liquidity. The Fund’s investment objective may be changed by the Board without shareholder approval.

The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in securities that (1) pay interest that is excluded from gross income for federal income tax purposes, and (2) do not produce income that will be considered to be an item of preference for purposes of the alternative minimum tax. While the Fund’s distributions are primarily exempt from federal income tax, a portion

of the Fund’s distributions may be subject to the federal alternative minimum tax and state and local taxes.

In complying with the 80% investment requirement, the Fund may include other instruments that have economic characteristics similar to the Fund’s direct investments that are counted toward the 80% investment requirement.

The Fund may invest up to 20% of its net assets in money market instruments that may be subject to federal taxes, including Treasury securities, repurchase agreements, commercial paper, and U.S. dollar-denominated foreign securities.

The Fund invests only in high-quality U.S. dollar-denominated short-term debt obligations, including: (i) municipal securities; (ii) tax-exempt commercial paper; and (iii) cash equivalents. These securities may have credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. Municipal securities include debt obligations of states, territories and possessions of the United States and the District of Columbia, their political subdivisions, agencies, instrumentalities, authorities thereof, and multi-state agencies, issued to obtain funds for various public purposes. Municipal lease obligations, synthetic municipal securities and certain types of industrial revenue bonds are treated as municipal securities. Synthetic municipal securities (which include tender option bonds and variable rate instruments, which are created when fixed rate bonds are coupled with a third party demand feature) and certain types of industrial revenue bonds are treated as municipal securities.

Other securities held by the Fund may be structured with demand features which have the effect of shortening the security’s maturity.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a money market fund that rounds the Fund’s current NAV per share to a minimum of the fourth decimal place. Although the Fund is a money market fund, the NAV of the Fund’s shares “floats,” fluctuating with changes in the values of the Fund’s portfolio securities. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 calendar days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 calendar days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 calendar days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund’s investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Alternative Minimum Tax Risk. Although the interest received from municipal securities generally is exempt from federal income tax, the Fund may invest a portion of its total assets in municipal securities subject to the federal alternative minimum tax. Accordingly, investment in the Fund could cause shareholders to be subject to, or result in an increased liability under, the federal alternative minimum tax.

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly). Financial services companies may be dependent on the supply of short-term financing. The value of bank instruments and securities of issuers in the banking and financial services industry, or guaranteed by such issuers, can be affected by and sensitive to changes in government regulation and interest rates and to economic downturns in the United States and abroad. The risk of holding bank instruments is also directly tied to the risk of insolvency or bankruptcy of the issuing banks, which risk may be higher for larger or more complex financial institutions that combine traditional, commercial and investment banking.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the value of the Fund’s foreign investments may be adversely affected by political and social instability in their home countries, by changes in economic or taxation policies in those countries, or by the difficulty in enforcing obligations in those countries. Foreign companies generally may be subject to less stringent regulations than U.S. companies, including financial reporting requirements and auditing and accounting controls. As a result, there

generally is less publicly available information about foreign companies than about U.S. companies. Trading in many foreign securities may be less liquid and more volatile than U.S. securities due to the size of the market or other factors.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the Adviser in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Because the share price of the Fund will fluctuate, when you sell your shares they may be worth more or less than what you originally paid for them and you may lose money by investing in the Fund. The Fund may impose a fee upon the sale of your shares or may temporarily suspend your ability to sell shares if the Fund’s liquidity falls below required minimums because of market conditions or other factors. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Municipal obligations may be more susceptible to downgrades or defaults during recessions or similar periods of economic stress. Municipal securities structured as revenue bonds are generally not backed by the taxing power of the issuing municipality but rather the revenue from the particular project or entity for which the bonds were issued. If the Internal Revenue Service determines that an issuer of a municipal security has not complied with applicable tax requirements, interest from the security could be treated as taxable, which could result in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

Risk of Large Shareholder Redemptions. One or more shareholders hold or control a significant percentage of the Fund’s shares. Redemptions by such shareholder(s) may force the Fund to sell a significant portion of its holdings.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Invesco Premier U.S. Government Money Portfolio

Objective(s) and Strategies

The Fund’s investment objective is a high level of current income consistent with the preservation of capital and the maintenance of liquidity.

The Fund invests at least 99.5% of its total assets (plus any borrowings for investment purposes) in cash, Government Securities, and repurchase agreements collateralized by cash or Government Securities. In addition, at least 80% of the Fund’s net assets (plus any borrowings for investment purposes) will be invested, under normal circumstances, in (i) direct obligations of the U.S. Treasury, (ii) other securities issued or guaranteed as to principal and interest by the U.S. Government or its agencies and instrumentalities (agency securities) and (iii) repurchase agreements secured by those obligations referenced in (i) and (ii) above. In contrast to the Fund’s 99.5% policy, the Fund’s 80% policy does not include cash or repurchase agreements collateralized by cash. Government Security generally means any security issued or guaranteed as to principal or interest by the U.S. Government or certain of its agencies or instrumentalities; or any certificate of deposit for any of the foregoing.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a Government Money Market Fund as defined by Rule 2a-7. As permitted by Rule 2a-7, the Fund seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 calendar days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 calendar days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 calendar days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The

Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the Adviser in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as

changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund or maintain the Fund’s $1.00 share price at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility. While the Board of Trustees may implement procedures to impose a fee upon the sale of your shares or temporarily suspend your ability to sell shares in the future if the Fund’s liquidity falls below required minimums because of market conditions or other factors, the Board has not elected to do so at this time. Should the Board elect to do so, such change would only become effective after shareholders were provided with specific advance notice of the change in the Fund’s policy and provided with the opportunity to redeem their shares in accordance with Rule 2a-7 before the policy change became effective.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Portfolio Holdings

Information concerning the Funds' portfolio holdings as well as their dollar-weighted average portfolio maturity and dollar-weighted average life to maturity as of the last business day or subsequent calendar day of the preceding month will be posted on their website no later than five business days after the end of the month and remain posted on the website for six months thereafter.

A description of Fund policies and procedures with respect to the disclosure of Fund portfolio holdings is available in the SAI, which is available to Qualified Persons at www.invesco.com/us.

Sub-Advisers. Invesco has entered into one or more Sub-Advisory Agreements with certain affiliates to serve as sub-advisers to the Funds (the Sub-Advisers), other than Invesco Premier U.S. Government Money Portfolio. Invesco may appoint the Sub-Advisers from time to time to provide discretionary investment management services, investment advice, and/or order execution services to the Funds. The Sub-Advisers and the Sub-Advisory Agreements are described in the SAI.

Adviser Compensation

During the fiscal year ended August 31, 2019, the Adviser received compensation of 0.18% of Invesco Premier Portfolio's average daily net assets, after fee waiver and/or expense reimbursement, if any.

During the fiscal year ended August 31, 2019, the Adviser received compensation of 0.20% of Invesco Premier Tax-Exempt Portfolio's average daily net assets, after fee waiver and/or expense reimbursement, if any.

During the fiscal year ended August 31, 2019, the Adviser received compensation of 0.18% of Invesco Premier U.S. Government Money Portfolio's average daily net assets, after fee waiver and/or expense reimbursement, if any.

The Adviser is responsible for all of the Funds' expenses, other than (i) interest, taxes and extraordinary items such as litigation costs; (ii) brokers’ commissions, issue and transfer taxes, and other costs chargeable to the Fund in connection with securities transactions to which the Fund is a party or in connection with securities owned by the Fund and (iii) other expenditures which are capitalized in accordance with generally accepted accounting principles applicable to investment companies.

The Adviser, Invesco Distributors, or one of their affiliates may, from time to time, at their expense out of their own financial resources make cash payments to financial intermediaries for marketing support and/or administrative support. These marketing support payments and administrative support payments are in addition to the payments by the Funds described in this prospectus. Because they are not paid by the Funds, these marketing support payments and administrative support payments will not change the price paid by investors for the purchase of the Funds’ shares or the amount that a Fund will receive as proceeds from such sales. In certain cases these cash payments could be significant to the financial intermediaries. These cash payments may also create an incentive for a financial intermediary to recommend or sell shares of the Funds to its customers. Please contact your financial intermediary for details about any payments they or their firm may receive in connection with the sale of shares of the Funds or the provision of services to the Funds. Also, please see the Funds’ SAI for more information about these types of payments.

A discussion regarding the basis for the Board’s approval of the investment advisory agreement and investment sub-advisory agreements of each Fund is available in each Fund’s most recent annual report to shareholders for the twelve-month period ended August 31.

Other Information

    

Invesco Premier Tax-Exempt Portfolio generally declares dividends, if any, daily and pays them monthly.

Invesco Premier U.S. Government Money Portfolio generally declares dividends, if any, daily and pays them monthly.

Dividends are paid on settled shares of Invesco Premier Portfolio and Invesco Premier U.S. Government Money Portfolio as of 5:30 p.m. Eastern Time. Dividends are paid on settled shares of Invesco Premier Tax-Exempt Portfolio as of 3:00 p.m. Eastern Time. If a Fund closes early on a business day, such Fund will pay dividends on settled shares at such earlier closing time. Generally, shareholders whose purchase orders have been accepted by Invesco Premier Portfolio or Invesco Premier U.S. Government Money Portfolio prior to 5:30 p.m. Eastern Time and by Invesco Premier Tax-Exempt Portfolio prior to 3:00 p.m. Eastern Time, or an earlier close time on any day that a Fund closes early, are eligible to receive dividends on that business day. The dividend declared on any day preceding a non-business day or days of a Fund will include the net income accrued on such non-business day or days. Dividends and distributions are reinvested in the form of additional full and fractional shares at net asset value unless the shareholder has elected to have such dividends and distributions paid in cash. See “Pricing of Shares-Timing of Orders” for a description of the Funds’ business days.

Capital Gains Distributions

Invesco Premier Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

Invesco Premier Tax-Exempt Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

Invesco Premier U.S. Government Money Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

13                                  Invesco Treasurer's Series Trust

Investor Class

	Net asset value, beginning of period	Net investment income(a)	Net gains (losses) on securities (both realized and unrealized)	Total from investment operations	Dividends from net investment income	Net asset value, end of period	Total return(b)	Net assets, end of period (000's omitted)	Ratio of expenses to average net assets with fee waivers and/or expense reimbursements	Ratio of expenses to average net assets without fee waivers and/or expense reimbursements	Ratio of net investment income to average net assets
Invesco Premier Portfolio
Year ended 08/31/19	$ 1.00	$ 0.02	$ 0.00	$ 0.02	$ (0.02)	$ 1.00	2.37%	$60,340	0.18% (c)	0.25% (c)	2.37% (c)
Year ended 08/31/18	1.00	0.02	0.00	0.02	(0.02)	1.00	1.60	29,699	0.18	0.25	1.63
Year ended 08/31/17	1.00	0.01	0.00	0.01	(0.01)	1.00	0.84	30,054	0.18	0.25	0.63
Year ended 08/31/16	1.00	0.00	0.00	0.00	(0.00)	1.00	0.30	39,464	0.18	0.25	0.30
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	1.00	0.04	50,778	0.18	0.25	0.04
...
Invesco Premier U.S. Government Money Portfolio
Year ended 08/31/19	1.00	0.02	0.00	0.02	(0.02)	1.00	2.21	32,557	0.18 (c)	0.25 (c)	2.21 (c)
Year ended 08/31/18	1.00	0.01	0.00	0.01	(0.01)	1.00	1.36	32,529	0.18	0.25	1.36
Year ended 08/31/17	1.00	0.01	(0.00)	0.01	(0.01)	1.00	0.53	38,809	0.18	0.25	0.54
Year ended 08/31/16	1.00	0.00	0.00	0.00	(0.00)	1.00	0.17	30,088	0.17	0.25	0.18
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	1.00	0.02	22,409	0.09	0.25	0.02
...
Invesco Premier Tax-Exempt Portfolio
Year ended 08/31/19	1.0000	0.0146	0.0000	0.0146	(0.0146)	1.0000	1.47	9,176	0.20 (c)	0.25 (c)	1.46 (c)
Year ended 08/31/18	1.0000	0.0106	(0.0001)	0.0105	(0.0105)	1.0000	1.05	14,355	0.20	0.25	1.06
Year ended 08/31/17	1.00	0.0058	0.0000	0.0058	(0.0058)	1.0000	0.59	10,815	0.20	0.25	0.56
Year ended 08/31/16	1.00	0.00	0.00	0.00	(0.00)	1.00	0.10	7,779	0.15	0.25	0.10
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	1.00	0.01	8,093	0.06	0.25	0.03
...

14                                  Invesco Treasurer's Series Trust

Hypothetical Investment and Expense Information

    

In connection with the final settlement reached between Invesco and certain of its affiliates with certain regulators, including the New York Attorney General’s Office, the SEC and the Colorado Attorney General’s Office (the settlement) arising out of certain market timing and unfair pricing allegations made against Invesco and certain of its affiliates, Invesco and certain of its affiliates agreed, among other things, to disclose certain hypothetical information regarding investment and expense information to Fund shareholders. The chart below is intended to reflect the annual and cumulative impact of the Fund’s expenses, including investment advisory

fees and other Fund costs, on the Fund’s returns over a 10-year period. The example reflects the following:

■	You invest $10,000 in the Fund and hold it for the entire 10-year period;
■	Your investment has a 5% return before expenses each year; and
■	The Funds’ current annual expense ratios include any applicable contractual fee waiver or expense reimbursement for the period committed.

There is no assurance that the annual expense ratio will be the expense ratio for the Funds’ classes for any of the years shown. This is only a hypothetical presentation made to illustrate what expenses and returns would be under the above scenarios; your actual returns and expenses are likely to differ (higher or lower) from those shown below.

Invesco Premier Portfolio — Investor Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio1	0.18%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.82%	9.80%	15.01%	20.48%	26.20%	32.19%	38.47%	45.05%	51.94%	59.16%
End of Year Balance	$10,482.00	$10,979.90	$11,501.44	$12,047.76	$12,620.03	$13,219.48	$13,847.40	$14,505.16	$15,194.15	$15,915.87
Estimated Annual Expenses	$ 18.43	$ 26.83	$ 28.10	$ 29.44	$ 30.83	$ 32.30	$ 33.83	$ 35.44	$ 37.12	$ 38.89
...

    

Invesco Premier Tax-Exempt Portfolio — Investor Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio1	0.20%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.80%	9.78%	14.99%	20.45%	26.18%	32.17%	38.45%	45.02%	51.91%	59.13%
End of Year Balance	$10,480.00	$10,977.80	$11,499.25	$12,045.46	$12,617.62	$13,216.96	$13,844.76	$14,502.39	$15,191.25	$15,912.84
Estimated Annual Expenses	$ 20.48	$ 26.82	$ 28.10	$ 29.43	$ 30.83	$ 32.29	$ 33.83	$ 35.43	$ 37.12	$ 38.88
...

    

Invesco Premier U.S. Government Money Portfolio — Investor Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio1	0.18%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.82%	9.80%	15.01%	20.48%	26.20%	32.19%	38.47%	45.05%	51.94%	59.16%
End of Year Balance	$10,482.00	$10,979.90	$11,501.44	$12,047.76	$12,620.03	$13,219.48	$13,847.40	$14,505.16	$15,194.15	$15,915.87
Estimated Annual Expenses	$ 18.43	$ 26.83	$ 28.10	$ 29.44	$ 30.83	$ 32.30	$ 33.83	$ 35.44	$ 37.12	$ 38.89
...

15                                  Invesco Treasurer's Series Trust

Share Classes
Class A	Class C	Class R	Class Y	Class R5 and R6
■  Initial sales charge which may be waived or reduced1	■  No initial sales charge	■  No initial sales charge	■  No initial sales charge	■  No initial sales charge
■  CDSC on certain redemptions1	■  CDSC on redemptions within one year3	■  No CDSC	■  No CDSC	■  No CDSC
■  12b-1 fee of up to 0.25%2	■  12b-1 fee of up to 1.00%4	■  12b-1 fee of up to 0.50%	■  No 12b-1 fee	■  No 12b-1 fee
	■  Investors may only open an account to purchase Class C shares if they have appointed a financial intermediary. This restriction does not apply to Employer Sponsored Retirement and Benefit Plans.	■  Does not convert to Class A shares	■  Does not convert to Class A shares	■  Does not convert to Class A shares
	■  Purchase maximums apply	■  Intended for Employer Sponsored Retirement and Benefit Plans		■  Special eligibility requirements and investment minimums apply (see “Share Class Eligibility – Class R5 and R6 shares” below)

In addition to the share classes shown in the chart above, the following Funds offer the following additional share classes further described in this prospectus:

■	Investor Class shares: Invesco Diversified Dividend Fund, Invesco Dividend Income Fund, Invesco Energy Fund, Invesco European Growth Fund, Invesco Gold & Precious Metals Fund, Invesco Health Care Fund, Invesco High Yield Fund, Invesco Income Fund, Invesco International Core Equity Fund, Invesco Low Volatility Equity Yield Fund, Invesco Government Money Market Fund, Invesco Municipal Income Fund, Invesco Real Estate Fund, Invesco Small Cap Growth Fund, Invesco Technology Fund, Invesco Premier Portfolio, Invesco Premier Tax-Exempt Portfolio and Invesco Premier U.S. Government Money Portfolio.
■	Class A2 shares: Invesco Short Duration Inflation Protected Fund and Invesco Limited Term Municipal Income Fund;
■	Class AX shares: Invesco Balanced-Risk Retirement Funds and Invesco Government Money Market Fund;
■	Class CX shares: Invesco Balanced-Risk Retirement Funds and Invesco Government Money Market Fund;
■	Class RX shares: Invesco Balanced-Risk Retirement Funds;
■	Class P shares: Invesco Summit Fund;
■	Class S shares: Invesco Charter Fund, Invesco Conservative Allocation Fund, Invesco Growth Allocation Fund, Invesco Moderate Allocation Fund, Invesco Oppenheimer Portfolio Series: Moderate Investor Fund and Invesco Summit Fund; and
■	Invesco Cash Reserve Shares: Invesco Government Money Market Fund and Invesco Oppenheimer Government Money Market Fund.

Share Class Eligibility

Class A, C and Invesco Cash Reserve Shares

Class A, C and Invesco Cash Reserve Shares are generally available to all retail investors, including individuals, trusts, corporations, business and charitable organizations and Retirement and Benefit Plans. Investors may only open an account to purchase Class C shares if they have appointed a financial intermediary. This restriction does not apply to Employer Sponsored Retirement and Benefit Plans. The share classes offer different fee structures that are intended to compensate financial intermediaries for services provided in connection with the sale of shares and continued maintenance of the customer relationship. You should consider the services provided by your financial adviser and any other financial intermediaries who will be involved in the servicing of your account when choosing a share class.

Class A2 Shares

Class A2 shares, which are offered only on Invesco Short Duration Inflation Protected Fund and Invesco Limited Term Municipal Income Fund, are closed to new investors. All references in this “Shareholder Account Information” section of this prospectus to Class A shares shall include Class A2 shares, unless otherwise noted.

Class AX, CX and RX Shares

Class AX, CX and RX shares are closed to new investors. Only investors who have continuously maintained an account in Class AX, CX or RX of a specific Fund may make additional purchases into Class AX, CX and RX, respectively, of such specific Fund. All references in this “Shareholder Account Information” section of this Prospectus to Class A, C or R shares of the Invesco Funds shall include Class AX (excluding Invesco Government Money Market Fund), CX, or RX shares, respectively, of the Invesco Funds, unless otherwise noted. All references in this “Shareholder Account Information” section of this Prospectus to Invesco Cash Reserve Shares of Invesco Government Money Market Fund shall include Class AX shares of Invesco Government Money Market Fund, unless otherwise noted.

Class P Shares

In addition to the other share classes discussed herein, the Invesco Summit Fund offers Class P shares, which were historically sold only through the AIM Summit Investors Plans I and II (each a Plan and, collectively, the Summit Plans). Class P shares are sold with no initial sales charge and have a 12b-1 fee of 0.10%. However, Class P shares are not sold to members of

the general public. Only shareholders who had accounts in the Summit Plans at the close of business on December 8, 2006 may purchase Class P shares and only until the total of their combined investments in the Summit Plans and in Class P shares directly equals the face amount of their former Plan under the 30 year extended investment option. The face amount of a Plan is the combined total of all scheduled monthly investments under the Plan. For a Plan with a scheduled monthly investment of $100.00, the face amount would have been $36,000.00 under the 30 year extended investment option.

Class R Shares

Class R shares are intended for Employer Sponsored Retirement and Benefit Plans. If you received Class R shares as a result of a merger or reorganization of a predecessor fund into any of the Funds, you will be permitted to make additional Class R shares purchases.

Class R5 and R6 Shares

Class R5 and R6 shares of the Funds (except for the Invesco Oppenheimer Master Event-Linked Bond Fund, Invesco Oppenheimer Master Inflation Protected Securities Fund and Invesco Oppenheimer Master Loan Fund) are available for use by Employer Sponsored Retirement and Benefit Plans, held either at the plan level or through omnibus accounts, that generally process no more than one net redemption and one net purchase transaction each day.

Class R5 and R6 shares of the Funds are also available to institutional investors. Institutional investors are: banks, trust companies, collective trust funds, entities acting for the account of a public entity (e.g., Taft-Hartley funds, states, cities or government agencies), funds of funds or other pooled investment vehicles, 529 college savings plans, financial intermediaries and corporations investing for their own accounts, endowments and foundations. For information regarding investment minimums for Class R5 and R6 shares, please see “Minimum Investments” below.

Class R6 shares of the Funds are also available through an intermediary that has agreed with Invesco Distributors, Inc. to make such shares available for use in retail omnibus accounts that generally process no more than one net redemption and one net purchase transaction each day. There are no minimum investment amounts for Class R6 shares held through retail omnibus accounts where the intermediary:

■	generally charges an asset-based fee or commission in addition to those described in this prospectus; and
■	maintains Class R6 shares and makes them available to retail investors.

The Invesco Oppenheimer Master Event-Linked Bond Fund, Invesco Oppenheimer Master Inflation Protected Securities Fund and Invesco Oppenheimer Master Loan Fund are only available for purchase by other Funds in the Invesco fund family and other Invesco pooled investment vehicles.

Shareholders eligible to purchase Class R6 Shares must meet the requirements specified by their intermediary. Not all intermediaries offer Class R6 Shares to their customers.

Class S Shares

Class S shares are limited to investors who purchase shares with the proceeds received from a systematic contractual investment plan redemption within the 12 months prior to purchasing Class S shares, and who purchase through an approved financial intermediary that has an agreement with the distributor to sell Class S shares. Class S shares are not otherwise sold to members of the general public. An investor purchasing Class S shares will not pay an initial sales charge. The investor will no longer be eligible to purchase additional Class S shares at that point where the value of the contributions to the prior systematic contractual investment plan combined with the subsequent Class S share contributions equals the face amount of what would have been the investor’s systematic contractual investment plan under the 30-year investment option. The face amount of a systematic contractual investment plan is the combined total of all scheduled monthly investments under that plan. For a plan with a scheduled monthly investment of $100.00, the face amount would have been $36,000.00 under the 30-year extended investment option.

Class Y Shares

Class Y shares are available to (i) investors who purchase through an account that is charged an asset-based fee or commission by a financial intermediary, including through brokerage platforms, where a broker is acting as the investor’s agent, that may require the payment by the investor of a commission and/or other form of compensation to that broker, (ii) endowments, foundations, or Employer Sponsored Retirement and Benefit Plans (with the exception of “Solo 401(k)” Plans and 403(b) custodial accounts held directly at Invesco), (iii) banks or bank trust departments acting on their own behalf or as trustee or manager for trust accounts, or (iv) any current, former or retired trustee, director, officer or employee (or immediate family members of a current, former or retired trustee, director, officer or employee) of any Invesco Fund or of Invesco Ltd. or any of its subsidiaries.

Subject to any conditions or limitations imposed on the servicing of Class Y shares by your financial adviser, if you received Class Y shares as a result of a merger or reorganization of a predecessor fund into any of the Funds, you will be permitted to make additional Class Y share purchases. In addition, you will be permitted to make additional Class Y shares purchases if you owned Class Y shares in a “Solo 401(k)” Plan or 403(b) custodial account held directly at Invesco if you held such shares in your account on or prior to May 24, 2019.

Investor Class Shares

Investor Class shares are sold with no initial sales charge and have a maximum 12b-1 fee of 0.25%. Only the following persons may purchase Investor Class shares:

■	Investors who established accounts prior to April 1, 2002, in Investor Class shares with Invesco Distributors, Inc. (Invesco Distributors) who have continuously maintained an account in Investor Class shares (this includes anyone listed in the registration of an account, such as a joint owner, trustee or custodian, and immediate family members of such persons) without a designated intermediary. These investors are referred to as “Investor Class grandfathered investors.”
■	Customers of a financial intermediary that has had an agreement with the Funds’ distributor or any Funds that offered Investor Class shares prior to April 1, 2002, that has continuously maintained such agreement. These intermediaries are referred to as “Investor Class grandfathered intermediaries.”
■	Any current, former or retired trustee, director, officer or employee (or immediate family member of a current, former or retired trustee, director, officer or employee) of any Invesco Fund or of Invesco Ltd. or any of its subsidiaries.

For additional shareholder eligibility requirements with respect to Invesco Premier Portfolio, please see “Shareholder Account Information – Purchasing Shares and Shareholder Eligibility – Invesco Premier Portfolio.”

Distribution and Service (12b-1) Fees

Except as noted below, each Fund has adopted a service and/or distribution plan pursuant to SEC Rule 12b-1. A 12b-1 plan allows a Fund to pay distribution and service fees to Invesco Distributors to compensate or reimburse, as applicable, Invesco Distributors for its efforts in connection with the sale and distribution of the Fund’s shares, all or a substantial portion of which are paid to the dealer of record. Because the Funds pay these fees out of their assets on an ongoing basis, over time these fees will increase the cost of your investment and may cause you to pay more than the maximum permitted initial sales charges described in this prospectus.

The following Funds and share classes do not have 12b-1 plans:

■	Invesco Limited Term Municipal Income Fund, Class A2 shares.
■	Invesco Money Market Fund, Investor Class shares.
■	Premier Portfolio, Investor Class shares.
■	Premier U.S. Government Money Portfolio, Investor Class shares.
■	Premier Tax-Exempt Portfolio, Investor Class shares.
■	All Funds, Class Y, Class R5 and Class R6 shares

Under the applicable service and/or distribution plan, the Funds may pay distribution and/or service fees up to the following annual rates with

respect to each Fund’s average daily net assets with respect to such class (subject to the exceptions noted on page A-1):

■	Class A shares: 0.25%
■	Class C shares: 1.00%
■	Class P shares: 0.10%
■	Class R shares: 0.50%
■	Class S shares: 0.15%
■	Invesco Cash Reserve Shares: 0.15%
■	Investor Class shares: 0.25%

Please refer to the prospectus fee table for more information on a particular Fund’s 12b-1 fees.

Initial Sales Charges (Class A Shares Only)

The Funds are grouped into six categories for determining initial sales charges. The “Other Information” section of each Fund’s prospectus will tell you the sales charge category in which the Fund is classified. Additionally, Class A shares of Invesco Conservative Income Fund, Invesco Oppenheimer Government Cash Reserves Fund, Invesco Oppenheimer Short Term Municipal Fund and Invesco Oppenheimer Ultra-Short Duration Fund do not have initial sales charges. As used below, the term “offering price” with respect to all categories of Class A shares includes the initial sales charge.

If you purchase $1,000,000 or more of Class A shares of Category I, II or V Funds or $250,000 or more of Class A shares of Category IV or VI Funds (a Large Purchase) the initial sales charge set forth below will be waived; though your shares will be subject to a 1% CDSC if you don’t hold such shares for at least 18 months.

Category I Initial Sales Charges
		Investor’s Sales Charge
Amount invested		As a % of Offering Price	As a % of Investment
Less than	$ 50,000	5.50%	5.82%
...
$50,000 but less than	$ 100,000	4.50	4.71
...
$100,000 but less than	$ 250,000	3.50	3.63
...
$250,000 but less than	$ 500,000	2.75	2.83
...
$500,000 but less than	$1,000,000	2.00	2.04
...

    

Category II Initial Sales Charges
		Investor’s Sales Charge
Amount invested		As a % of Offering Price	As a % of Investment
Less than	$ 100,000	4.25%	4.44%
...
$100,000 but less than	$ 250,000	3.50	3.63
...
$250,000 but less than	$ 500,000	2.50	2.56
...
$500,000 but less than	$1,000,000	2.00	2.04
...

    

Category III Initial Sales Charges
		Investor’s Sales Charge
Amount invested		As a % of Offering Price	As a % of Investment
Less than	$ 100,000	1.00%	1.01%
...
$100,000 but less than	$ 250,000	0.75	0.76
...
$250,000 but less than	$1,000,000	0.50	0.50
...

    

Category IV Initial Sales Charges
		Investor’s Sales Charge
Amount invested		As a % of Offering Price	As a % of Investment
Less than	$100,000	2.50%	2.56%
...
$100,000 but less than	$250,000	1.75	1.78
...

    

Category V Initial Sales Charges
		Investor’s Sales Charge
Amount invested		As a % of Offering Price	As a % of Investment
Less than	$ 100,000	3.25%	3.36%
...
$100,000 but less than	$ 250,000	2.75	2.83
...
$250,000 but less than	$ 500,000	1.75	1.78
...
$500,000 but less than	$1,000,000	1.50	1.52
...

    

Category VI Initial Sales Charges
		Investor’s Sales Charge
Amount invested		As a % of Offering Price	As a % of Investment
Less than	$ 50,000	5.50%	5.82%
...
$50,000 but less than	$100,000	4.50	4.71
...
$100,000 but less than	$250,000	3.50	3.63
...

Class A Shares Sold Without an Initial Sales Charge

The availability of certain sales charge waivers and discounts will depend on whether you purchase your shares directly from the Fund or through a financial intermediary. Intermediaries may have different policies and procedures regarding the availability of front-end sales load waivers or contingent deferred (back-end) sales load (“CDSC”) waivers, which are discussed below. In all instances, it is the purchaser’s responsibility to notify the Fund or the purchaser’s financial intermediary at the time of purchase of any relationship or other facts qualifying the purchaser for sales charge waivers or discounts. For waivers and discounts not available through a particular intermediary, shareholders will have to purchase Fund shares directly from the Fund or through another intermediary to receive these waivers or discounts.

The following types of investors may purchase Class A shares without paying an initial sales charge:

■	Investors who purchase shares through a fee-based advisory account with an approved financial intermediary. In a fee based advisory program, a financial intermediary typically charges each investor a fee based on the value of the investor’s account in exchange for servicing that account.
■	Employer Sponsored Retirement and Benefit Plans maintained on retirement platforms or by the Funds’ transfer agent or its affiliates:

■	with assets of at least $1 million; or
■	with at least 100 employees eligible to participate in the plan; or
■	that execute plan level or multiple-plan level transactions through a single omnibus account per Fund.

■	Any investor who purchases his or her shares with the proceeds of an in kind rollover, transfer or distribution from a Retirement and Benefit Plan where the account being funded by such rollover is to be maintained by the same financial intermediary, trustee, custodian or administrator that maintained the plan from which the rollover distribution funding such rollover originated, or an affiliate thereof.
■	Investors who own Investor Class shares of a Fund, who purchase Class A shares of a different Fund through the same account in which the Investor Class Shares were first purchased.
■	Funds of funds or other pooled investment vehicles.
■	Insurance company separate accounts.
■	Any current or retired trustee, director, officer or employee of any Invesco Fund or of Invesco Ltd. or any of its subsidiaries.
■	Any registered representative or employee of any financial intermediary who has an agreement with Invesco Distributors to sell shares of the Invesco Funds (this includes any members of his or her immediate family).
■	Any investor purchasing shares through a financial intermediary that has a written arrangement with the Funds’ distributor in which the Funds’ distributor has agreed to participate in a no transaction fee program in which the financial intermediary will make Class A shares available without the imposition of a sales charge.

■	Former shareholders of Atlas Strategic Income Fund who purchase shares of a Fund into which shareholders of Invesco Oppenheimer Global Strategic Income Fund may exchange if permitted by the intermediary’s policies.
■	Former shareholders of Oppenheimer Total Return Fund Periodic Investment Plan who purchase shares of a Fund into which shareholders of Invesco Oppenheimer Main Street Fund may exchange if permitted by the intermediary’s policies.

In addition, investors may acquire Class A shares without paying an initial sales charge in connection with:

■	reinvesting dividends and distributions;
■	exchanging shares of one Fund that were previously assessed a sales charge for shares of another Fund;
■	purchasing shares in connection with the repayment of an Employer Sponsored Retirement and Benefit Plan loan administered by the Funds’ transfer agent; and
■	purchasing Class A shares with proceeds from the redemption of Class C, Class R, Class R5, Class R6 or Class Y shares where the redemption and purchase are effectuated on the same business day due to the distribution of a Retirement and Benefit Plan maintained by the Funds’ transfer agent or one of its affiliates.

Invesco Distributors also permits certain other investors to invest in Class A shares without paying an initial charge as a result of the investor’s current or former relationship with the Invesco Funds. For additional information about such eligibility, please reference the Funds’ SAI.

Shareholders purchasing Fund shares through a Merrill Lynch platform or account will be eligible only for the following load waivers (front-end sales charge waivers and contingent deferred, or back-end, sales charge waivers) and discounts, which may differ from those disclosed elsewhere in this Fund’s prospectus or SAI.

■	Front-end Sales Load Waivers on Class A Shares available at Merrill Lynch

■	Employer-sponsored retirement, deferred compensation and employee benefit plans (including health savings accounts) and trusts used to fund those plans, provided that the shares are not held in a commission-based brokerage account and shares are held for the benefit of the plan;
■	Shares purchased by or through a 529 Plan;
■	Shares purchased through a Merrill Lynch affiliated investment advisory program;
■	Shares purchased by third party investment advisors on behalf of their advisory clients through Merrill Lynch’s platform;
■	Shares of funds purchased through the Merrill Edge Self-Directed platform (if applicable);
■	Shares purchased through reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the fund family);
■	Shares converted from Class C (i.e. level-load) shares of the same fund in the month of or following the 10-year anniversary of the purchase date;
■	Employees and registered representatives of Merrill Lynch or its affiliates and their family members;
■	Directors or Trustees of the Fund, and employees of the Fund’s investment adviser or any of its affiliates, as described in this prospectus; and
■	Shares purchased from the proceeds of redemptions within the same fund family, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (known as Rights of Reinstatement).

■	CDSC Waivers on A and C Shares available at Merrill Lynch

■	Death or disability of the shareholder;
■	Shares sold as part of a systematic withdrawal plan as described in the Fund’s prospectus;
■	Return of excess contributions from an IRA Account;
■	Shares sold as part of a required minimum distribution for IRA and retirement accounts due to the shareholder reaching age 70 1⁄2;

■	Shares sold to pay Merrill Lynch fees but only if the transaction is initiated by Merrill Lynch;
■	Shares acquired through a right of reinstatement; and
■	Shares held in retirement brokerage accounts, that are converted to a lower cost share class due to transfer to a fee based account or platform (applicable to A and C shares only).

■	Front-end load Discounts Available at Merrill Lynch: Breakpoints, Rights of Accumulation & Letters of Intent

■	Breakpoints as described in this prospectus;
■	Rights of Accumulation (ROA) which entitle shareholders to breakpoint discounts will be automatically calculated based on the aggregated holding of fund family assets held by accounts within the purchaser’s household at Merrill Lynch. Eligible fund family assets not held at Merrill Lynch may be included in the ROA calculation only if the shareholder notifies his or her financial advisor about such assets; and
■	Letters of Intent (LOI) which allow for breakpoint discounts based on anticipated purchases within a fund family, through Merrill Lynch, over a 13-month period of time (if applicable).

Shareholders purchasing Fund shares through an Ameriprise Financial platform or account will be eligible for the following front-end sales charge waivers and discounts with respect to Class A shares, which may differ from those disclosed elsewhere in this Fund’s prospectus or SAI.

■	Employer-sponsored retirement plans (e.g., 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit sharing and money purchase pension plans and defined benefit plans). For purposes of this provision, employer-sponsored retirement plans do not include SEP IRAs, Simple IRAs or SAR-SEPs.
■	Shares purchased through an Ameriprise Financial investment advisory program (if an Advisory or similar share class for such investment advisory program is not available).
■	Shares purchased by third party investment advisors on behalf of their advisory clients through Ameriprise Financial’s platform (if an Advisory or similar share class for such investment advisory program is not available).
■	Shares purchased through reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same Fund (but not any other fund within the same fund family).
■	Shares exchanged from Class C shares of the same fund in the month of or following the 10-year anniversary of the purchase date. To the extent that this prospectus elsewhere provides for a waiver with respect to such shares following a shorter holding period, that waiver will apply to exchanges following such shorter period. To the extent that this prospectus elsewhere provides for a waiver with respect to exchanges of Class C shares for load waived shares, that waiver will also apply to such exchanges.
■	Employees and registered representatives of Ameriprise Financial or its affiliates and their immediate family members.
■	Shares purchased by or through qualified accounts (including IRAs, Coverdell Education Savings Accounts, 401(k)s, 403(b) TSCAs subject to ERISA and defined benefit plans) that are held by a covered family member, defined as an Ameriprise financial advisor and/or the advisor’s spouse, advisor’s lineal ascendant (mother, father, grandmother, grandfather, great grandmother, great grandfather), advisor’s lineal descendant (son, step-son, daughter, step-daughter, grandson, granddaughter, great grandson, great granddaughter) or any spouse of a covered family member who is a lineal descendant.
■	Shares purchased from the proceeds of redemptions within the same fund family, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (i.e. Rights of Reinstatement).
■	Automatic Exchange of Class C shares

■	Class C shares will automatically exchange to Class A shares in the month of the 10-year anniversary of the purchase date.

Shareholders purchasing Fund shares through a Morgan Stanley Wealth Management transactional brokerage account will be eligible only for the following front-end sales charge waivers with respect to Class A shares,

which may differ from and may be more limited than those disclosed elsewhere in this Fund’s Prospectus or SAI.

■	Front-end Sales Charge Waivers on Class A Shares available at Morgan Stanley Wealth Management

■	Employer-sponsored retirement plans (e.g., 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit sharing and money purchase pension plans and defined benefit plans). For purposes of this provision, employer-sponsored retirement plans do not include SEP IRAs, Simple IRAs, SAR-SEPs or Keogh plans;
■	Morgan Stanley employee and employee-related accounts according to Morgan Stanley’s account linking rules;
■	Shares purchased through reinvestment of dividends and capital gains distributions when purchasing shares of the same fund;
■	Shares purchased through a Morgan Stanley self-directed brokerage account;
■	Class C (i.e., level-load) shares that are no longer subject to a contingent deferred sales charge and are converted to Class A shares of the same fund pursuant to Morgan Stanley Wealth Management’s share class conversion program; and
■	Shares purchased from the proceeds of redemptions within the same fund family, provided (i) the repurchase occurs within 90 days following the redemption, (ii) the redemption and purchase occur in the same account, and (iii) redeemed shares were subject to a front-end or deferred sales charge.

Shareholders purchasing Fund shares through a Raymond James Financial Services, Inc., Raymond James affiliates and each entity’s affiliates (Raymond James) platform or account, or through an introducing broker-dealer or independent registered investment adviser for which Raymond James provides trade execution, clearance, and/or custody services, will be eligible only for the following load waivers (front-end sales charge waivers and contingent deferred, or back-end, sales charge waivers) and discounts, which may differ from those disclosed elsewhere in this Fund’s prospectus or SAI.

■	Front-end sales load waivers on Class A shares available at Raymond James

■	Shares purchased in an investment advisory program.
■	Shares purchased within the same fund family through a systematic reinvestment of capital gains distributions and dividend distributions.
■	Employees and registered representatives of Raymond James or its affiliates and their family members as designated by Raymond James.
■	Shares purchased from the proceeds of redemptions within the same fund family, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (known as Rights of Reinstatement).
■	A shareholder in the Fund’s Class C shares will have their shares converted at net asset value to Class A shares (or the appropriate share class) of the Fund if the shares are no longer subject to a CDSC and the conversion is in line with the policies and procedures of Raymond James.

■	CDSC Waivers on Classes A and C shares available at Raymond James

■	Death or disability of the shareholder.
■	Shares sold as part of a systematic withdrawal plan as described in the fund’s prospectus.
■	Return of excess contributions from an IRA Account.
■	Shares sold as part of a required minimum distribution for IRA and retirement accounts due to the shareholder reaching age 70 1⁄2 as described in the fund’s prospectus.
■	Shares sold to pay Raymond James fees but only if the transaction is initiated by Raymond James.
■	Shares acquired through a right of reinstatement.

■	Front-end load discounts available at Raymond James: breakpoints, rights of accumulation, and/or letters of intent

■	Breakpoints as described in this prospectus.
■	Rights of accumulation which entitle shareholders to breakpoint discounts will be automatically calculated based on the aggregated holding of fund family assets held by accounts within the purchaser’s

	household at Raymond James. Eligible fund family assets not held at Raymond James may be included in the rights of accumulation calculation only if the shareholder notifies his or her financial advisor about such assets.
■	Letters of intent which allow for breakpoint discounts based on anticipated purchases within a fund family, over a 13-month time period. Eligible fund family assets not held at Raymond James may be included in the calculation of letters of intent only if the shareholder notifies his or her financial advisor about such assets.

The Funds may terminate or amend the terms of these waivers or discounts at any time.

Qualifying for Reduced Sales Charges and Sales Charge Exceptions

The following types of accounts qualify for reduced sales charges or sales charge exceptions under ROAs and LOIs:

1.	an individual account owner;
2.	immediate family of the individual account owner (which includes the individual’s spouse or domestic partner; the individual’s children, step-children or grandchildren; the spouse or domestic partner of the individual’s children, step-children or grandchildren; the individual’s parents and step-parents; the parents or step-parents of the individual’s spouse or domestic partner; the individual’s grandparents; and the individual’s siblings);
3.	a Retirement and Benefit Plan so long as the plan is established exclusively for the benefit of an individual account owner; and
4.	a Coverdell Education Savings Account (Coverdell ESA), maintained pursuant to Section 530 of the Code (in either case, the account must be established by an individual account owner or have an individual account owner named as the beneficiary thereof).

Alternatively, an Employer Sponsored Retirement and Benefit Plan or Employer Sponsored IRA may be eligible to purchase shares pursuant to a ROA at the plan level, and receive a reduced applicable initial sales charge for a new purchase based on the total value of the current purchase and the value of other shares owned by the plan’s participants if:

a)	the employer or plan sponsor submits all contributions for all participating employees in a single contribution transmittal (the Invesco Funds will not accept separate contributions submitted with respect to individual participants);
b)	each transmittal is accompanied by checks or wire transfers; and
c)	if the Invesco Funds are expected to carry separate accounts in the names of each of the plan participants, (i) the employer or plan sponsor notifies Invesco Distributors or its designee in writing that the separate accounts of all plan participants should be linked, and (ii) all new participant accounts are established by submitting an appropriate Account Application on behalf of each new participant with the contribution transmittal.

Participant accounts in a retirement plan that are eligible to purchase shares pursuant to a ROA at the plan level may not also be considered eligible to do so for the benefit of an individual account owner.

In all instances, it is the purchaser’s responsibility to notify Invesco Distributors or its designee of any relationship or other facts qualifying the purchaser as eligible for reduced sales charges and/or sales charge exceptions and to provide all necessary documentation of such facts in order to qualify for reduced sales charges or sales charge exceptions. For additional information on linking accounts to qualify for ROA or LOI, please see the Funds’ SAI.

Purchases of Class A shares of Invesco Conservative Income Fund, Invesco Oppenheimer Government Cash Reserves Fund, Invesco Oppenheimer Ultra-Short Duration Fund and Invesco Oppenheimer Short Term Municipal Fund, Invesco Cash Reserve Shares of Invesco Government Money Market Fund and Invesco Oppenheimer Government Money Market Fund, or Investor Class shares of any Fund will not be taken into account in determining whether a purchase qualifies for a reduction in initial sales charges pursuant to ROAs or LOIs.

Rights of Accumulation

Purchasers that qualify for ROA may combine new purchases of Class A shares of a Fund with shares of the Fund or other open-end Invesco Funds currently owned (Class A, C, IB, IC, P, R, S or Y) for the purpose of qualifying for the lower initial sales charge rates that apply to larger purchases. The applicable initial sales charge for the new purchase will be based on the total of your current purchase and the value of other shares owned based on their current public offering price. The Funds’ transfer agent may automatically link certain accounts registered in the same name with the same taxpayer identification number for the purpose of qualifying you for lower initial sales charge rates.

Letters of Intent

Under a LOI, you commit to purchase a specified dollar amount of Class A shares of one or more Funds during a 13-month period. The amount you agree to purchase determines the initial sales charge you pay. If the full amount committed to in the LOI is not invested by the end of the 13-month period, your account will generally be assessed the higher initial sales charge that would normally be applicable to the total amount actually invested. Shares equal in value to 5% of the intended purchase amount will be held in escrow for this purpose.

Reinstatement Following Redemption

If you redeem any class of shares of a Fund, you may reinvest all or a portion of the proceeds from the redemption (and may include that amount necessary to acquire a fractional Share to round off his or her purchase to the next full Share) in the same share class of any Fund within 180 days of the redemption without paying an initial sales charge. Class P, S, and Y redemptions may be reinvested into Class A shares without an initial sales charge.

This reinstatement privilege does not apply to a purchase made through a regularly scheduled automatic investment plan, such as a purchase by a regularly scheduled payroll deduction or transfer from a bank account.

This reinstatement privilege shall be suspended for the period of time in which a purchase block is in place on a shareholder’s account. Please see “Purchase Blocking Policy” discussed below.

In order to take advantage of this reinstatement privilege, you must inform your financial adviser or the Funds’ transfer agent that you wish to do so at the time of your reinvestment.

Contingent Deferred Sales Charges (CDSCs)

CDSCs on Class A Shares and Invesco Cash Reserve Shares

Any shares of a Large Purchase of Class A shares redeemed prior to 18 months after the date of purchase will be subject to a CDSC of 1% with the exception of Class A shares of Invesco Conservative Income Fund, Invesco Oppenheimer Short Term Municipal Fund and Invesco Oppenheimer Ultra-Short Duration Fund which do not have CDSCs on redemptions.

If Invesco Distributors pays a concession to a financial intermediary in connection with a Large Purchase of Class A shares by an Employer Sponsored Retirement and Benefit Plan or SIMPLE IRA Plan, the Class A shares will be subject to a 1% CDSC if all of the Employer Sponsored Retirement and Benefit Plan’s or SIMPLE IRA’s shares are redeemed within one year from the date of initial purchase.

If you acquire Invesco Cash Reserve Shares of Invesco Government Money Market Fund or of Invesco Oppenheimer Government Money Market Fund through an exchange involving Class A shares that were subject to a CDSC, the shares acquired as a result of the exchange will continue to be subject to that same CDSC.

CDSCs on Class C Shares

Class C shares are subject to a CDSC. If you redeem your shares during the first year since your purchase has been made you will be assessed a 1% CDSC, unless you qualify for one of the CDSC exceptions outlined below.

CDSCs on Class C Shares – Employer Sponsored Retirement and Benefit Plans and Employer Sponsored IRAs

Class C shares are subject to a 1.00% CDSC at the time of redemption if all of the Employer Sponsored Retirement and Benefit Plan’s or Employer Sponsored IRA’s shares are redeemed within one year from the date of initial purchase.

CDSCs on Class C Shares of Invesco Short Term Bond Fund

While Class C shares of Invesco Short Term Bond Fund are not subject to a CDSC, if you acquired shares of Invesco Short Term Bond Fund through an exchange, and the shares originally purchased were subject to a CDSC, the shares acquired as a result of the exchange will continue to be subject to that same CDSC. Conversely, if you acquire Class C shares of any other Fund as a result of an exchange involving Class C shares of Invesco Short Term Bond Fund that were not subject to a CDSC, then the shares acquired as a result of the exchange will not be subject to a CDSC.

Computing a CDSC

The CDSC on redemptions of shares is computed based on the lower of their original purchase price or current net asset value, net of reinvested dividends and capital gains distributions. In determining whether to charge a CDSC, shares are accounted for on a first-in, first-out basis, which means that you will redeem shares on which there is no CDSC first, and then shares in the order of their purchase.

CDSC Exceptions

Investors who own shares that are otherwise subject to a CDSC will not pay a CDSC in the following circumstances:

■	If you participate in the Systematic Redemption Plan and withdraw up to 12% of the value of your shares that are subject to a CDSC in any twelve-month period.
■	If you redeem shares to pay account fees.
■	If you are the executor, administrator or beneficiary of an estate or are otherwise entitled to assets remaining in an account following the death or post-purchase disability of a shareholder or beneficial owner and you choose to redeem those shares.

There are other circumstances under which you may be able to redeem shares without paying CDSCs. For additional information about such circumstances, please see the Appendix entitled “Purchase, Redemption and Pricing of Shares” in each Fund’s SAI.

Shares acquired through the reinvestment of dividends and distributions are not subject to CDSCs.

The following share classes are sold without a CDSC:

■	Class C shares of Invesco Short Term Bond Fund
■	Class A2 shares of Invesco Short Duration Inflation Protected Fund and Invesco Limited Term Municipal Income Fund
■	Invesco Cash Reserve Shares of Invesco Government Money Market Fund and Invesco Oppenheimer Government Money Market Fund
■	Investor Class shares of any Fund
■	Class P shares of Invesco Summit Fund
■	Class R5 and R6 shares of any Fund
■	Class S shares of Invesco Charter Fund, Invesco Conservative Allocation Fund, Invesco Growth Allocation Fund, Invesco Moderate Allocation Fund, Invesco Oppenheimer Portfolio Series: Moderate Investor Fund and Invesco Summit Fund
■	Class Y shares of any Fund

Purchasing Shares and Shareholder Eligibility

Invesco Premier U.S. Government Money Portfolio

For Invesco Premier U.S. Government Money Portfolio, you may purchase shares using one of the options below. Unless the Fund closes early on a business day, the Fund’s transfer agent will generally accept any purchase order placed until 5:00 p.m. Eastern Time on a business day and may accept a purchase order placed until 5:30 p.m. Eastern Time on a business day. If you wish to place an order between 5:00 p.m. and 5:30 p.m. Eastern Time on a business day, you must place such order by telephone; however,

the Fund’s transfer agent reserves the right to reject or limit the amount of orders placed during this time. If the Fund closes early on a business day, the Fund’s transfer agent must receive your purchase order prior to such closing time. Purchase orders will not be processed unless the account application and purchase payment are received in good order. In accordance with the USA PATRIOT Act, if you fail to provide all the required information requested in the current account application, your purchase order will not be processed. Additionally, federal law requires that the Fund verifies and records your identifying information.

Invesco Premier Tax-Exempt Portfolio

For Invesco Premier Tax-Exempt Portfolio, you may purchase shares using one of the options below. Unless the Fund closes early on a business day, the Fund’s transfer agent will generally accept any purchase order placed until 3:00 p.m. Eastern Time on a business day. If the Fund closes early on a business day, the Fund’s transfer agent must receive your purchase order prior to such closing time. Purchase orders will not be processed unless the account application and purchase payment are received in good order. In accordance with the USA PATRIOT Act, if you fail to provide all the required information requested in the current account application, your purchase order will not be processed. Additionally, federal law requires that the Fund verify and record your identifying information.

Invesco Premier Portfolio

Only accounts beneficially owned by natural persons will be permitted to retain their shares. The Fund has implemented policies and procedures reasonably designed to limit all beneficial owners of the Fund to natural persons, and investments in the Fund are limited to accounts beneficially owned by natural persons. Natural persons may invest in the Fund through certain tax-advantaged savings accounts, trusts and other retirement and investment accounts, which may include, among others: participant-directed defined contribution plans; individual retirement accounts; simplified employee pension arrangements; simple retirement accounts; custodial accounts; deferred compensation plans for government or tax-exempt organization employees; Archer medical savings accounts; college savings plans; health savings account plans; ordinary trusts and estates of natural persons; or certain other retirement and investment accounts with ultimate investment authority held by the natural person beneficial owner, notwithstanding having an institutional decision maker making day-to-day decisions (e.g., a plan sponsor in certain retirement arrangements or an investment adviser managing discretionary investment accounts).

Further, financial intermediaries may only submit purchase orders if they have implemented policies and procedures reasonably designed to limit all investors on behalf of whom they submit orders to accounts beneficially owned by natural persons. Financial intermediaries may be required to provide a written statement or other representation that they have in place, and operate in compliance with, such policies and procedures prior to submitting purchase orders. Such policies and procedures may include provisions for the financial intermediary to promptly report to the Fund or the transfer agent the identification of any shareholder of the Fund that does not qualify as a natural person of whom they are aware and promptly take steps to redeem any such shareholder’s shares of the Fund upon request by the Fund or the transfer agent, in such manner as it may reasonably request. The Fund may involuntarily redeem any such shareholder who does not voluntarily redeem their shares.

Natural persons may purchase shares using one of the options below. For all classes of the Fund, other than Investor Class shares, unless the Fund closes early on a business day, the Fund’s transfer agent will generally accept any purchase order placed until 5:00 p.m. Eastern Time on a business day and may accept a purchase order placed until 5:30 p.m. Eastern Time on a business day. If you wish to place an order between 5:00 p.m. and 5:30 p.m. Eastern Time on a business day, you must place such order by telephone; or send your request by a pre-arranged Liquidity Link data transmission however, the Fund’s transfer agent reserves the right to reject or limit the amount of orders placed during this time. For Investor Class shares of the Fund, unless the Fund closes early on a business day, the Fund’s transfer agent will generally accept any purchase order placed until 4:00 p.m. Eastern Time on a business day and may accept a purchase

order placed until 4:30 p.m. Eastern Time on a business day. If you wish to place an order between 4:00 p.m. and 4:30 p.m. Eastern Time on a business day, you must place such order by telephone; however, the Fund’s transfer agent reserves the right to reject or limit the amount of orders placed during this time. If the Fund closes early on a business day, the Fund’s transfer agent must receive your purchase order prior to such closing time. Purchase orders will not be processed unless the account application and purchase payment are received in good order. In accordance with the USA PATRIOT Act, if you fail to provide all the required information requested in the current account application, your purchase order will not be processed. Additionally, federal law requires that the Fund verify and record your identifying information.

Invesco Distributors or its designee has the discretion to accept orders on behalf of clients for lesser amounts.

The minimum investments for Class R5 and R6 shares are as follows:

There is no minimum initial investment for an Employer Sponsored Retirement and Benefit Plan investing through a retirement platform that administers at least $2.5 billion in retirement plan assets. All other Employer Sponsored Retirement and Benefit Plans must meet a minimum initial investment of at least $1 million in each Fund in which it invests.

The minimum initial investment in each share class for all other institutional investors is $1 million, unless such investment is made by (i) an investment company, as defined under the 1940 Act, as amended, that is part of a family of investment companies which own in the aggregate at least $100 million in securities, or (ii) an account established with a 529 college savings plan managed by Invesco, in which case there is no minimum initial investment.

How to Purchase Shares

	Opening An Account	Adding To An Account
By Wire*	Mail completed account application to the Funds’ transfer agent. Call the Funds’ transfer agent at (800) 959-4246 to receive a reference number. Then, use the wire instructions provided below.	Call the Funds’ transfer agent to receive a reference number. Then, use the wire instructions provided below.
Wire Instructions	Beneficiary Bank ABA/Routing #: 011001234 Beneficiary Account Number: 729639 Beneficiary Account Name: Invesco Investment Services, Inc. RFB: Fund Name, Reference # OBI: Your Name, Account #
By Telephone*	Open your account using one of the available methods described above.	For all Classes, except Class R5 and Class R6 shares, select the Bank Account Information option on your completed account application or complete a Systematic Options and Bank Information Form. Mail the application or form to the Funds’ transfer agent. Once the Funds’ transfer agent has received the form, call the Funds’ transfer agent at the number below to place your purchase order. For Class R5 and R6 shares, call the Funds’ transfer agent at (800) 959-4246 and wire payment for your purchase order in accordance with the wire instructions listed above.
Automated Investor Line	Open your account using one of the methods described above.	Call the Funds’ transfer agent’s 24-hour Automated Investor Line at 1-800-246-5463. You may place your order after you have provided the bank instructions that will be requested.
By Internet	Open your account using one of the methods described above.	Access your account at www.invesco.com/us. The proper bank instructions must have been provided on your account. You may not purchase shares in Retirement and Benefit Plans on the internet.
*Class R5 and R6 shares are only available for purchase through these methods.

Non-retirement retail investors, including high net worth investors investing directly or through a financial intermediary, are not eligible for Class R5 shares. IRAs and Employer Sponsored IRAs are also not eligible for Class R5 shares. If you hold your shares through a financial intermediary, the terms by which you purchase, redeem and exchange shares may differ than the terms in this prospectus depending upon the policies and procedures of your financial intermediary. Notwithstanding the foregoing, each shareholder must still meet the Fund’s eligibility requirements applicable to the share class to be purchased.

Purchase orders will not be processed unless the account application and purchase payment are received in good order. In accordance with the USA PATRIOT Act, if you fail to provide all the required information requested in the current account application, your purchase order will not be processed. Additionally, federal law requires that the Funds verify and record your identifying information.

Systematic Purchase Plan (Available for all classes except Class R5 and R6 shares)

You can arrange for periodic investments in any of the Funds by authorizing the Funds’ transfer agent to withdraw the amount of your investment from your bank account on a day or dates you specify and in an amount of at least $25 per Fund for IRAs and Coverdell ESAs, and at least $50 per Fund for all other types of accounts (a Systematic Purchase Plan). You may stop the Systematic Purchase Plan at any time by giving the Funds’ transfer agent notice ten days prior to your next scheduled withdrawal. Certain financial advisers and other financial intermediaries may also offer systematic purchase plans.

Dollar Cost Averaging (Available for all classes except Class R5 and R6 shares)

Dollar Cost Averaging allows you to make automatic periodic exchanges, if permitted, from one Fund to another Fund or multiple other Funds. The account from which exchanges are to be made must have a minimum balance of $5,000 before you can use this option. Exchanges will occur on (or about) the day of the month you specify, in the amount you specify. Dollar Cost Averaging cannot be set up for the 29th through the 31st of the month. The minimum amount you can exchange to another Fund is $50. Your financial intermediary may offer alternative dollar cost averaging programs with different requirements.

Automatic Dividend and Distribution Investment

Your dividends and distributions may be paid in cash or reinvested in the same Fund or another Fund without paying an initial sales charge.

Unless you specify otherwise, your dividends and distributions will automatically be reinvested in the same Fund. You must comply with the following requirements to be eligible to invest your dividends and distributions in shares of another Fund:

■	Your account balance in the Fund paying the dividend or distribution must be at least $5,000; and
■	Your account balance in the Fund receiving the dividend or distribution must be at least $500.

If you elect to receive your distributions by check, and the distribution amount is $25 or less, then the amount will be automatically reinvested in the same Fund and no check will be issued. If you have elected to receive distributions by check, and the postal service is unable to deliver checks to your address of record, then your distribution election may be converted to having all subsequent distributions reinvested in the same Fund and no checks will be issued. With respect to certain account types, if your check remains uncashed for six months, the Fund generally reserves the right to reinvest your distribution check in your account at the then applicable NAV and to reinvest all subsequent distributions in shares of the Fund. Such checks will be reinvested into the same share class of the Fund. You should contact the Funds’ transfer agent to change your distribution option, and your request to do so must be received by the Funds’ transfer agent before the record date for a distribution in order to be effective for that distribution. No interest will accrue on amounts represented by uncashed distribution checks.

Redeeming Shares

For Funds other than Invesco Premier Portfolio, Invesco Premier Tax-Exempt Portfolio and Invesco Premier U.S. Government Money Portfolio, the Funds’ transfer agent or authorized intermediary, if applicable, must receive your call during the hours of the customary trading session of the New York Stock Exchange (NYSE) in order to effect the redemption at that day’s net asset value. For Invesco Premier Portfolio, Invesco Premier Tax-Exempt Portfolio and Invesco Premier U.S. Government Money Portfolio, the Funds’ transfer agent or authorized intermediary, if applicable, must receive your call before the Funds’ net asset value determination in order to effect the redemption that day.

Your broker or financial intermediary may charge service fees for handling redemption transactions.

How to Redeem Shares
	■  Original signatures of all registered owners/trustees; ■  The dollar value or number of shares that you wish to redeem; ■  The name of the Fund(s) and your account number; ■  The cost basis method or specific shares you wish to redeem for tax reporting purposes, if different than the method already on record; and
	■  Signature guarantees, if necessary (see below). The Funds’ transfer agent may require that you provide additional documentation, or information, such as corporate resolutions or powers of attorney, if applicable. If you are redeeming from a Retirement and Benefit Plan, you must complete the appropriate distribution form.
By Telephone*	Call the Funds’ transfer agent at 1-800-959-4246. You will be allowed to redeem by telephone if: ■  Your redemption proceeds are to be mailed to your address on record (and there has been no change in your address of record within the last 15 days) or transferred electronically to a pre-authorized checking account; ■  You can provide proper identification information; ■  Your redemption proceeds do not exceed $250,000 per Fund; and ■  You have not previously declined the telephone redemption privilege.
	You may, in limited circumstances, initiate a redemption from an Invesco IRA by telephone. Redemptions from Employer Sponsored Retirement and Benefit Plans and Employer Sponsored IRAs may be initiated only in writing and require the completion of the appropriate distribution form, as well as employer authorization. A person who has been authorized in the account application to effect transactions may make redemptions by telephone. You must call the Funds’ transfer agent before the close of the customary trading session of the NYSE on days the NYSE is open for business in order to effect the redemption at that day’s closing price.
Automated Investor Line	Call the Funds’ transfer agent’s 24-hour Automated Investor Line at 1-800-246-5463. You may place your redemption order after you have provided the bank instructions that will be requested.
By Internet	Place your redemption request at www.invesco.com/us. You will be allowed to redeem by Internet if: ■  You can provide proper identification information; ■  Your redemption proceeds do not exceed $250,000 per Fund; and ■  You have already provided proper bank information. Redemptions from Employer Sponsored Retirement and Benefit Plans and Employer Sponsored IRAs may be initiated only in writing and require the completion of the appropriate distribution form, as well as employer authorization.
*Class R5 and R6 shares are only available to be redeemed through these methods.

Timing and Method of Payment

The Funds’ transfer agent typically expects to pay redemption proceeds to redeeming shareholders within one business day after a redemption request is received in good order, regardless of the method a Fund uses to make such payment. However, a Fund may take up to seven days to process a redemption request. “Good order” means that all necessary information and documentation related to the redemption request have been provided to the Funds’ transfer agent or authorized intermediary, if applicable. If your request is not in good order, the Funds’ transfer agent may require additional documentation in order to redeem your shares. If you redeem shares recently purchased by check or ACH, you may be required to wait up to ten calendar days before your redemption proceeds are sent. This delay is necessary to ensure that the purchase has cleared. You can avoid the check hold period if you pay for your shares with a certified check, a cashier’s check or a federal wire. Payment may be postponed under unusual circumstances, as allowed by the SEC, such as when the NYSE restricts or suspends trading.

In addition, a temporary hold may be placed on the disbursement of redemption proceeds from an account if there is a reasonable belief that financial exploitation of a Specified Adult (as defined below) has occurred, is occurring, has been attempted, or will be attempted. Notice of such a delay will be provided in accordance with regulatory requirements. This temporary hold will be for an initial period of no more than 15 business days while an internal review is performed. Should the internal review support the belief

that financial exploitation has occurred, is occurring, has been attempted or will be attempted, the temporary hold may be extended for up to 10 additional business days. Both the initial and subsequent hold on the disbursement may be terminated or extended by a state regulator or an agency or court of competent jurisdiction. For purposes of this paragraph, the term “Specified Adult” refers to an individual who is (a) a natural person age 65 and older, or (b) a natural person age 18 and older who is reasonably believed to have a mental or physical impairment that renders the individual unable to protect his or her own interests.

If you redeem by telephone, the Funds’ transfer agent will transmit the amount of redemption proceeds electronically to your pre-authorized bank account. Redemption checks are mailed to your address of record, via first class U.S. mail, unless you make other arrangements with the Funds’ transfer agent.

The Funds’ transfer agent uses reasonable procedures to confirm that instructions communicated via telephone and the Internet are genuine, and the Funds and the Funds’ transfer agent are not liable for losses arising from actions taken in accordance with instructions that are reasonably believed to be genuine.

A Fund typically expects to use holdings of cash and cash equivalents and sales of portfolio assets to meet redemption requests, both regularly and in stressed market conditions. The Funds also have the ability to redeem in kind as further described below under “Redemptions in Kind.” Invesco Floating Rate Fund has a revolving line of credit that may be used to meet redemptions in stressed market conditions.

Expedited Redemptions (for Invesco Cash Reserve Shares of Invesco Government Money Market Fund and Invesco Oppenheimer Government Money Market Fund only)

If you place your redemption order by telephone, before 11:30 a.m. Eastern Time and request an expedited redemption, the Funds’ transfer agent will transmit payment of redemption proceeds on that same day via federal wire to a bank of record on your account. If the Funds’ transfer agent receives your redemption order after 11:30 a.m. Eastern Time and before the close of the customary trading session of the NYSE, it will transmit payment on the next business day.

Suspension of Redemptions

The right of redemption may be suspended or the date of payment postponed when (a) trading on the NYSE is restricted, as determined by applicable rules and regulations of the SEC, (b) the NYSE is closed for other than customary weekend and holiday closings, (c) the SEC has by order permitted such suspension, or (d) an emergency as determined by the SEC exists making disposition of portfolio securities or the valuation of the net assets of the Fund not reasonably practicable. With respect to Invesco Government Money Market Fund, Invesco Oppenheimer Government Cash Reserves Fund, Invesco Oppenheimer Government Money Market Fund, Invesco Premier Portfolio, Invesco Premier Tax-Exempt Portfolio and Invesco Premier U.S. Government Money Portfolio, in the event that the Fund, at the end of a business day, has invested less than 10% of its total assets in weekly liquid assets or, with respect to the retail and government money market funds, the Fund’s price per share as computed for the purpose of distribution, redemption and repurchase, rounded to the nearest 1%, has deviated from the stable price established by the Fund’s Board of Trustees (“Board”) or the Board, including a majority of trustees who are not interested persons as defined in the 1940 Act, determines that such a deviation is likely to occur, and the Board, including a majority of trustees who are not interested persons of the Fund, irrevocably has approved the liquidation of the Fund, the Fund’s Board has the authority to suspend redemptions of Fund shares.

Liquidity Fees and Redemption Gates

For Invesco Premier Portfolio and Invesco Premier Tax-Exempt Portfolio, if the Fund’s weekly liquid assets fall below 30% of its total assets, the Board, in its discretion, may impose liquidity fees of up to 2% of the value of the shares redeemed and/or suspend redemptions (redemption gates). In addition, if any such Fund’s weekly liquid assets falls below 10% of its total

assets at the end of any business day, the Fund must impose a 1% liquidity fee on shareholder redemptions unless the Board determines that not doing so is in the best interests of the Fund.

Liquidity fees and redemption gates are most likely to be imposed, if at all, during times of extraordinary market stress. In the event that a liquidity fee or redemption gate is imposed, the Board expects that for the duration of its implementation and the day after which such gate or fee is terminated, the Fund would strike only one net asset value per day, at the Fund’s last scheduled net asset value calculation time.

The imposition and termination of a liquidity fee or redemption gate will be reported by a Fund to the SEC on Form N-CR. Such information will also be available on the Fund’s website. In addition, a Fund will communicate such action through a supplement to its registration statement and may further communicate such action through a press release or by other means. If a liquidity fee is applied by the Board, it will be charged on all redemption orders submitted after the effective time of the imposition of the fee by the Board. Liquidity fees would reduce the amount you receive upon redemption of your shares. In the event a Fund imposes a redemption gate, the Fund or any financial intermediary on its behalf will not accept redemption requests until the Fund provides notice that the redemption gate has been terminated.

Redemption requests submitted while a redemption gate is imposed will be cancelled without further notice. If shareholders still wish to redeem their shares after a redemption gate has been lifted, they will need to submit a new redemption request.

Liquidity fees and redemption gates will generally be used to assist a Fund to help preserve its market–based NAV per share. It is possible that a liquidity fee will be returned to shareholders in the form of a distribution. The Board may, in its discretion, terminate a liquidity fee or redemption gate at any time if it believes such action to be in the best interest of a Fund. Also, liquidity fees and redemption gates will automatically terminate at the beginning of the next business day once a Fund’s weekly liquid assets reach at least 30% of its total assets. Redemption gates may only last up to 10 business days in any 90-day period. When a fee or a gate is in place, the Fund may elect not to permit the purchase of shares or to subject the purchase of shares to certain conditions, which may include affirmation of the purchaser’s knowledge that a fee or a gate is in effect. When a fee or a gate is in place, shareholders will not be permitted to exchange into or out of a Fund.

There is some degree of uncertainty with respect to the tax treatment of liquidity fees received by a Fund, and such tax treatment may be the subject to future IRS guidance. If a Fund receives liquidity fees, it will consider the appropriate tax treatment of such fees to the Fund at such time.

Financial intermediaries are required to promptly take the steps requested by the Funds or their designees to impose or help to implement a liquidity fee or redemption gate as requested from time to time, including the rejection of orders due to the imposition of a fee or gate or the prompt re-confirmation of orders following a notification regarding the implementation of a fee or gate. If a liquidity fee is imposed, these steps are expected to include the submission of separate, rather than combined, purchase and redemption orders from the time of the effectiveness of the liquidity fee or redemption gate and the submission of such order information to the Fund or its designee prior to the next calculation of a Fund’s net asset value. Unless otherwise agreed to between a Fund and financial intermediary, the Fund will withhold liquidity fees on behalf of financial intermediaries. With regard to such orders, a redemption request that a Fund determines in its sole discretion has been received in good order by the Fund or its designated agent prior to the imposition of a liquidity fee or redemption gate may be paid by the Fund despite the imposition of a redemption gate or without the deduction of a liquidity fee. If a liquidity fee is imposed during the day, an intermediary who receives both purchase and redemption orders from a single account holder is not required to net the purchase and redemption orders. However, the intermediary is permitted to apply the liquidity fee to the net amount of redemptions (even if the purchase order was received prior to the time the liquidity fee was imposed).

Where a Financial Intermediary serves as a Fund’s agent for the purpose of receiving orders, trades that are not transmitted to the Fund by the Financial Intermediary before the time required by the Fund or the transfer agent may, in the Fund’s discretion, be processed on an as-of basis, and any cost or loss to the Fund or transfer agent or their affiliates, from such transactions shall be borne exclusively by the Financial Intermediary.

Systematic Withdrawals (Available for all classes except Class R5 and R6 shares)

You may arrange for regular periodic withdrawals from your account in amounts equal to or greater than $50 per Fund. The Funds’ transfer agent will redeem the appropriate number of shares from your account to provide redemption proceeds in the amount requested. You must have a total account balance of at least $5,000 in order to establish a Systematic Redemption Plan, unless you are establishing a Required Minimum Distribution for a Retirement and Benefit Plan. You can stop this plan at any time by giving ten days’ prior notice to the Funds’ transfer agent.

Check Writing

The Funds’ transfer agent provides check writing privileges for accounts in the following Funds and share classes:

■	Invesco Government Money Market Fund, Invesco Cash Reserve Shares, Class AX shares, Class Y shares and Investor Class shares
■	Invesco Oppenheimer Government Cash Reserves Fund, Class A shares and Class Y shares
■	Invesco Oppenheimer Government Money Market Fund, Invesco Cash Reserve Shares and Class Y shares
■	Invesco Premier Portfolio, Investor Class shares
■	Invesco Premier Tax-Exempt Portfolio, Investor Class shares
■	Invesco Premier U.S. Government Money Portfolio, Investor Class shares

You may redeem shares of these Funds by writing checks in amounts of $250 or more if you have subscribed to the service by completing a Check Writing authorization form.

Check writing privileges are not available for Retirement and Benefit Plans. Checks are not eligible to be converted to ACH by the payee. You may not give authorization to a payee by phone to debit your account by ACH for a debt owed to the payee.

If you do not have a sufficient number of shares in your account to cover the amount of the check and any applicable deferred sales charge, the check will be returned and no shares will be redeemed. Because it is not possible to determine your account’s value in advance, you should not write a check for the entire value of your account or try to close your account by writing a check.

A check writing redemption request which is verifiably submitted to a Fund’s agent before a liquidity fee or redemption gate is imposed will be considered a valid redemption and will be processed normally.

Signature Guarantees

The Funds’ transfer agent requires a signature guarantee in the following circumstances:

■	When your redemption proceeds exceed $250,000 per Fund.
■	When you request that redemption proceeds be paid to someone other than the registered owner of the account.
■	When you request that redemption proceeds be sent somewhere other than the address of record or bank of record on the account.
■	When you request that redemption proceeds be sent to a new address or an address that changed in the last 15 days.

The Funds’ transfer agent will accept a guarantee of your signature by a number of different types of financial institutions. Call the Funds’ transfer agent for additional information. Some institutions have transaction amount maximums for these guarantees. Please check with the guarantor institution to determine whether the signature guarantee offered will be sufficient to cover the value of your transaction request.

Redemptions in Kind

Although the Funds generally intend to pay redemption proceeds solely in cash, the Funds reserve the right to determine, in their sole discretion,

whether to satisfy redemption requests by making payment in securities or other property (known as a redemption in kind). Redemptions in kind may result in transaction costs and/or market fluctuations associated with liquidating or holding the securities, respectively.

Redemptions Initiated by the Funds

If your account (Class A, C, P, S and Investor Class shares only) has been open at least one year, you have not made an additional purchase in the account during the past six calendar months, and the value of your account falls below $500 for three consecutive months, the Funds have the right to redeem the account after giving you 60 days’ prior written notice. You may avoid having your account redeemed during the notice period by bringing the account value up to $500 or by initiating a Systematic Purchase Plan.

If a Fund determines that you have not provided a correct Social Security or other tax identification number on your account application, or the Fund is not able to verify your identity as required by law, the Fund may, at its discretion, redeem the account and distribute the proceeds to you.

In order to separate retail investors (natural persons) and non-retail investors, the Invesco Premier Portfolio reserve the right to redeem shares in any account that the Funds cannot confirm to their satisfaction are beneficially owned by natural persons. The Funds will provide advance written notice of their intent to make any such involuntary redemptions. The Funds reserve the right to redeem shares in any account that they cannot confirm to their satisfaction are beneficially owned by natural persons, after providing advance notice.

Neither a Fund nor its investment adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.

Minimum Account Balance (Available for all classes except Class R5 and R6 shares)

A low balance fee of $12 per year may be deducted in the fourth quarter of each year from all accounts held in the Funds (each a Fund Account) with a value less than the low balance amount (the Low Balance Amount) as determined from time to time by the Funds and the Adviser. The Funds and the Adviser generally expect the Low Balance Amount to be $750, but such amount may be adjusted for any year depending on various factors, including market conditions. The Low Balance Amount and the date on which it will be deducted from any Fund Account will be posted on our website, www.invesco.com/us, on or about November 1 of each year. This fee will be payable to the Funds’ transfer agent by redeeming from a Fund Account sufficient shares owned by a shareholder and will be used by the Funds’ transfer agent to offset amounts that would otherwise be payable by the Funds to the Funds’ transfer agent under the Funds’ transfer agency agreement with the Funds’ transfer agent. The low balance fee does not apply to participant accounts in advisory programs or to Employer Sponsored Retirement and Benefit Plans.

Exchanging Shares

You may, under certain circumstances, exchange shares in one Fund for those of another Fund. An exchange is the purchase of shares in one Fund which is paid for with the proceeds from a redemption of shares of another Fund effectuated on the same day. Any gain on the transaction may be subject to federal income tax. Accordingly, the procedures and processes applicable to redemptions of Fund shares, as discussed under the heading “Redeeming Shares” above, will apply. Before requesting an exchange, review the prospectus of the Fund you wish to acquire.

All exchanges are subject to the limitations set forth in the prospectuses of the Funds. If you wish to exchange shares of one Fund for those of another Fund, you must consult the prospectus of the Fund whose shares you wish to acquire to determine whether the Fund is offering shares to new investors and whether you are eligible to acquire shares of that Fund.

Permitted Exchanges

Except as otherwise provided herein or in the SAI, you generally may exchange your shares for shares of the same class of another Fund. The

following table shows generally permitted exchanges from one Fund to another Fund (exceptions listed below under “Exchanges Not Permitted”):

Exchange From	Exchange To
Invesco Cash Reserve Shares	Class A, C, R, Investor Class
...
Class A	Class A, Investor Class, Invesco Cash Reserve Shares*
...
Class A2	Class A, Investor Class, Invesco Cash Reserve Shares
...
Class AX	Class A, AX, Investor Class, Invesco Cash Reserve Shares
...
Investor Class	Class A, Investor Class
...
Class P	Class A, Invesco Cash Reserve Shares
...
Class S	Class A, S, Invesco Cash Reserve Shares
...
Class C	Class C
...
Class CX	Class C, CX
...
Class R	Class R
...
Class RX	Class R, RX
...
Class R5	Class R5
...
Class R6	Class R6
...
Class Y	Class Y*
* You may exchange Class Y shares of Invesco Oppenheimer Government Money Market Fund for Class A shares of any other Fund. If you exchange Class Y shares of Invesco Oppenheimer Government Money Market Fund for Class A shares of any other Fund, you may exchange those Class A shares back into Class Y shares of Invesco Oppenheimer Government Money Market Fund, but not Class Y shares of any other Fund.

Exchanges into Invesco Senior Loan Fund

Invesco Senior Loan Fund is a closed-end interval fund that continuously offers its shares pursuant to the terms and conditions of its prospectus. The Adviser is the investment adviser for the Invesco Senior Loan Fund. As with the Invesco Funds, you generally may exchange your shares of Class A (Invesco Cash Reserve Shares of Invesco Government Money Market Fund and Invesco Oppenheimer Government Money Market Fund) or Class C of any Invesco Fund for shares of Class A or Class C, respectively, of Invesco Senior Loan Fund. Please refer to the prospectus for the Invesco Senior Loan Fund for more information, including limitations on exchanges out of Invesco Senior Loan Fund.

Exchanges Not Permitted

The following exchanges are not permitted:

■	Investor Class shares cannot be exchanged for Class A shares of any Fund which offers Investor Class shares.
■	Class A2 shares of Invesco Short Duration Inflation Protected Fund and Invesco Limited Term Municipal Income Fund cannot be exchanged for Class A shares of those Funds.
■	Invesco Cash Reserve Shares cannot be exchanged for Class C or R shares if the shares being exchanged were acquired by exchange from Class A shares of any Fund.
■	All existing systematic exchanges and reallocations will cease and these options will no longer be available on all 403(b) prototype plans.
■	Class A shares of a Fund acquired by exchange of Class Y shares of Invesco Oppenheimer Government Money Market Fund cannot be exchanged for Class Y shares of any Fund, except Class Y shares of Invesco Oppenheimer Government Money Market Fund.

Exchange Conditions

Shares must have been held for at least one day prior to the exchange with the exception of dividends and distributions that are reinvested.

Under unusual market conditions, a Fund may delay the exchange of shares for up to five business days if it determines that it would be materially disadvantaged by the immediate transfer of exchange proceeds. The exchange privilege is not an option or right to purchase shares. Any of the participating Funds or the distributor may modify or terminate this privilege at any time.

Initial Sales Charges, CDSCs and 12b-1 Fees on Applicable to Exchanges

You may be required to pay an initial sales charge when exchanging from a Fund with a lower initial sales charge than the one into which you are

exchanging. If you exchange into shares that are subject to a CDSC, the Funds’ transfer agent will begin the holding period for purposes of calculating the CDSC on the date you made your initial purchase.

In addition, as a result of differences in the forms of distribution plans among the Funds, certain exchanges of Class A shares, Class C shares, and Class R shares of a Fund for the same class of shares of another Fund may result in investors paying a higher or a lower 12b-1 fee on the Fund being exchanged into. Please refer to the prospectus fee table and financial highlights table and the SAI for more information on the fees and expenses, including applicable 12b-1 fees, of the Fund you wish to acquire.

Share Class Conversions

Shares of one class of a Fund may be converted into shares of another class of the same Fund, provided that you are eligible to buy that share class. Investors who hold Fund shares through a financial intermediary that does not have an agreement to make certain share classes of the Funds available or that cannot systematically support the conversion may not be eligible to convert their shares. Furthermore, your financial intermediary may have discretion to effect a conversion on your behalf. Consult with your financial intermediary for details. Any CDSC associated with the converting shares will be assessed immediately prior to the conversion to the new share class. The conversion of shares of one class of a Fund into shares of another class of the same Fund is not taxable for federal income tax purposes and no gain or loss will be reported on the transaction. See the applicable prospectus for share class information.

Fees and expenses differ between share classes. You should read the prospectus for the share class into which you are seeking to convert your shares prior to the conversion.

Automatic Conversion of Class C and Class CX Shares

Class C and Class CX shares held for ten years after purchase are eligible for automatic conversion into Class A and Class AX shares of the same Fund, respectively, except that for the Invesco Government Money Market Fund, the Fund’s Class C and Class CX shares would be eligible to automatically convert into the Fund’s Invesco Cash Reserve Share Class (the Conversion Feature). The automatic conversion pursuant to the Conversion Feature will generally occur at the end of the month following the tenth anniversary after a purchase of Class C or Class CX shares (the Conversion Date).

Automatic conversions pursuant to the Conversion Feature will be on the basis of the NAV per share, without the imposition of any sales charge (including a CDSC), fee or other charge. All such automatic conversions of Class C and Class CX shares will constitute tax-free exchanges for federal income tax purposes.

Class C and Class CX shares of a Fund acquired through a reinvestment of dividends and distributions will convert to Class A and Class AX shares, respectively, of the Fund (or Invesco Cash Reserve shares for Invesco Government Money Market Fund) on the Conversion Date pro rata with the converting Class C and Class CX shares of that Fund that were not acquired through reinvestment of dividends and distributions.

Class C or Class CX shares held through a financial intermediary in existing omnibus Employer Sponsored Retirement and Benefit Plans and other omnibus accounts may be converted pursuant to the Conversion Feature by the financial intermediary once it is determined that the Class C or Class CX shares have been held for the required holding period. It is the financial intermediary’s (and not the Fund’s) responsibility to keep records and to ensure that the shareholder is credited with the proper holding period as the Fund and its agents may not have transparency into how long a shareholder has held Class C or Class CX shares for purposes of determining whether such Class C or Class CX shares are eligible to automatically convert pursuant to the Conversion Feature. In order to determine eligibility for automatic conversion in these circumstances, it is the responsibility of the shareholder or their financial intermediary to determine that the shareholder is eligible to exercise the Conversion Feature, and the shareholder or their financial intermediary may be required to maintain records that substantiate the holding period of Class C or Class CX shares.

In addition, a financial intermediary may sponsor and/or control programs or platforms that impose a different conversion schedule or eligibility requirements for conversions of Class C or Class CX shares. In these cases, Class C and Class CX shares of certain shareholders may not be eligible for automatic conversion pursuant to the Conversion Feature as described above. The Fund has no responsibility for overseeing, monitoring or implementing a financial intermediary’s process for determining whether a shareholder meets the required holding period for automatic conversion. Please consult with your financial intermediary if you have any questions regarding the Conversion Feature.

Share Class Conversions Not Permitted

The following share class conversions are not permitted:

■	Conversions into Class A from Class A2 of the same Fund.
■	Conversions into Class A2, Class AX, Class CX, Class P, Class RX or Class S of the same Fund.

Rights Reserved by the Funds

Each Fund and its agents reserve the right at any time to:

■	Reject or cancel all or any part of any purchase or exchange order.
■	Modify any terms or conditions related to the purchase, redemption or exchange of shares of any Fund.
■	Reject or cancel any request to establish a Systematic Purchase Plan or Systematic Redemption Plan.
■	Modify or terminate any sales charge waivers or exceptions.
■	Suspend, change or withdraw all or any part of the offering made by this prospectus.

Excessive Short-Term Trading Activity (Market Timing) Disclosures

While the Funds provide their shareholders with daily liquidity, their investment programs are designed to serve long-term investors and are not designed to accommodate excessive short-term trading activity in violation of our policies described below. Excessive short-term trading activity in the Funds’ shares (i.e., a purchase of Fund shares followed shortly thereafter by a redemption of such shares, or vice versa) may hurt the long-term performance of certain Funds by requiring them to maintain an excessive amount of cash or to liquidate portfolio holdings at a disadvantageous time, thus interfering with the efficient management of such Funds by causing them to incur increased brokerage and administrative costs. Where excessive short-term trading activity seeks to take advantage of arbitrage opportunities from stale prices for portfolio securities, the value of Fund shares held by long-term investors may be diluted. The Board has adopted policies and procedures designed to discourage excessive or short-term trading of Fund shares for all Funds except the money market funds and Invesco Conservative Income Fund. However, there is the risk that these Funds’ policies and procedures will prove ineffective in whole or in part to detect or prevent excessive or short-term trading. These Funds may alter their policies at any time without prior notice to shareholders if the Adviser believes the change would be in the best interests of long-term shareholders.

Invesco and certain of its corporate affiliates (Invesco and such affiliates, collectively, the Invesco Affiliates) currently use the following tools designed to discourage excessive short-term trading in the retail Funds:

■	Trade activity monitoring.
■	Discretion to reject orders.
■	Purchase blocking.
■	The use of fair value pricing consistent with procedures approved by the Board.

Each of these tools is described in more detail below. Although these tools are designed to discourage excessive short-term trading, you should understand that none of these tools alone nor all of them taken together eliminate the possibility that excessive short-term trading activity in the Funds will occur. Moreover, each of these tools involves judgments that are inherently subjective. Invesco Affiliates seek to make these judgments to the best of their abilities in a manner that they believe is consistent with long-term shareholder interests.

Money Market Funds. The Boards of Invesco Government Money Market Fund, Invesco Oppenheimer Government Cash Reserves Fund, Invesco Oppenheimer Government Money Market Fund, Invesco Premier Portfolio, Invesco Premier Tax-Exempt Portfolio and Invesco Premier U.S. Government Money Portfolio (the money market funds) have not adopted any policies and procedures that would limit frequent purchases and redemptions of such Funds’ shares. The Boards of the money market funds considered the risks of not having a specific policy that limits frequent purchases and redemptions, and determined that those risks were minimal. Nonetheless, to the extent that a money market fund must maintain additional cash and/or securities with short-term durations in greater amounts than may otherwise be required or borrow to honor redemption requests, the money market fund’s yield could be negatively impacted.

The Boards of the money market funds do not believe that it is appropriate to adopt any such policies and procedures for the money market funds for the following reasons:

■	The money market funds are offered to investors as cash management vehicles; therefore, investors should be able to purchase and redeem shares regularly and frequently.
■	One of the advantages of a money market fund as compared to other investment options is liquidity. Any policy that diminishes the liquidity of the money market funds will be detrimental to the continuing operations of such Funds.
■	With respect to the money market funds maintaining a constant net asset value, the money market funds’ portfolio securities are valued on the basis of amortized cost, and such Funds seek to maintain a constant net asset value. As a result, the money market funds are not subject to price arbitrage opportunities.
■	With respect to the money market funds maintaining a constant net asset value, because such Funds seek to maintain a constant net asset value, investors are more likely to expect to receive the amount they originally invested in the Funds upon redemption than other mutual funds.

Invesco Conservative Income Fund. The Board of Invesco Conservative Income Fund has not adopted any policies and procedures that would limit frequent purchases and redemptions of such Fund’s shares. The Board of Invesco Conservative Income Fund considered the risks of not having a specific policy that limits frequent purchases and redemptions, and determined that those risks were minimal. Nonetheless, to the extent that the Fund must maintain additional cash and/or securities with short-term durations in greater amounts than may otherwise be required or borrow to honor redemption requests, the Fund’s yield could be negatively impacted.

The Board of the Invesco Conservative Income Fund does not believe that it is appropriate to adopt any such policies and procedures for the Fund for the following reasons:

■	The Fund is offered to investors as a cash management vehicle; investors perceive an investment in the Fund as an alternative to cash and must be able to purchase and redeem shares regularly and frequently.
■	One of the advantages of the Fund as compared to other investment options is liquidity. Any policy that diminishes the liquidity of the Fund will be detrimental to the continuing operations of the Fund.

The Board considered the risks of not having a specific policy that limits frequent purchases and redemptions, and it determined that those risks are minimal, especially in light of the reasons for not having such a policy as described above. Nonetheless, to the extent that the Fund must maintain additional cash and/or securities with short-term durations than may otherwise be required, the Fund’s yield could be negatively impacted. Moreover, excessive trading activity in the Fund’s shares may cause the Fund to incur increased brokerage and administrative costs.

The Fund and its agent reserve the right at any time to reject or cancel any part of any purchase order. This could occur if the Fund determines that such purchase may disrupt the Fund’s operation or performance.

Trade Activity Monitoring

Invesco Affiliates monitor selected trades on a daily basis in an effort to detect excessive short-term trading activities. If, as a result of this monitoring, Invesco Affiliates believe that a shareholder has engaged in excessive short-term trading, they will seek to act in a manner that they

believe is consistent with the best interests of long-term investors, which may include taking steps such as (i) asking the shareholder to take action to stop such activities or (ii) refusing to process future purchases or exchanges related to such activities in the shareholder’s accounts other than exchanges into a money market fund. Invesco Affiliates will use reasonable efforts to apply the Funds’ policies uniformly given the practical limitations described above.

The ability of Invesco Affiliates to monitor trades that are made through accounts that are maintained by intermediaries (rather than the Funds’ transfer agent) and through conduit investment vehicles may be limited or non-existent.

Discretion to Reject Orders

If a Fund or an Invesco Affiliate determines, in its sole discretion, that your short-term trading activity is excessive, the Fund may, in its sole discretion, reject any additional purchase and exchange orders. This discretion may be exercised with respect to purchase or exchange orders placed directly with the Funds’ transfer agent or through a financial intermediary.

Purchase Blocking Policy

The Funds (except those listed below) have adopted a policy under which any shareholder redeeming shares having a value of $50,000 or more from a Fund on any trading day will be precluded from investing in that Fund for 30 calendar days after the redemption transaction date. The policy applies to redemptions and purchases that are part of exchange transactions. Under the purchase blocking policy, certain purchases will not be prevented and certain redemptions will not trigger a purchase block, such as: purchases and redemptions of shares having a value of less than $50,000; systematic purchase, redemption and exchange account options; transfers of shares within the same Fund; non-discretionary rebalancing in fund-of-funds; asset allocation features; fee-based accounts; account maintenance fees; small balance account fees; plan-level omnibus Retirement and Benefit Plans; death and disability and hardship distributions; loan transactions; transfers of assets; Retirement and Benefit Plan rollovers; IRA conversions and re-characterizations; and mandatory distributions from Retirement and Benefit Plans.

The Funds reserve the right to modify any of the parameters (including those not listed above) of the purchase blocking policy at any time. Further, the purchase blocking policy may be waived with respect to specific shareholder accounts in those instances where the Adviser determines that its surveillance procedures are adequate to detect frequent trading in Fund shares.

If an account is maintained by a financial intermediary whose systems are unable to apply Invesco’s purchase blocking policy, the Adviser will accept the establishment of an account only if the Adviser believes the policies and procedures are reasonably designed to enforce the frequent trading policies of the Funds. You should refer to disclosures provided by the financial intermediary with which you have an account to determine the specific trading restrictions that apply to you. If the Adviser identifies any activity that may constitute frequent trading, it reserves the right to contact the intermediary and request that the intermediary either provide information regarding an account owner’s transactions or restrict the account owner’s trading. There is no guarantee that all instances of frequent trading in Fund shares will be prevented.

The purchase blocking policy does not apply to Invesco Conservative Income Fund, Invesco Government Money Market Fund, Invesco Oppenheimer Government Cash Reserves Fund, Invesco Oppenheimer Government Money Market Fund, Invesco Premier Portfolio, Invesco Premier Tax-Exempt Portfolio and Invesco Premier U.S. Government Money Portfolio.

Pricing of Shares

Determination of Net Asset Value

The price of each Fund’s shares is the Fund’s net asset value per share. The Funds (except Invesco Government Money Market Fund, Invesco Oppenheimer Government Cash Reserves Fund, Invesco Oppenheimer Government Money Market Fund, Invesco Premier Portfolio and Invesco Premier U.S. Government Money Portfolio) value portfolio securities for

which market quotations are readily available at market value. Securities and other assets quoted in foreign currencies are valued in U.S. dollars based on the prevailing exchange rates on that day. The Funds (except Invesco Government Money Market Fund, Invesco Oppenheimer Government Cash Reserves Fund, Invesco Oppenheimer Government Money Market Fund, Invesco Premier Portfolio and Invesco Premier U.S. Government Money Portfolio) value securities and assets for which market quotations are unavailable at their “fair value,” which is described below. Invesco Government Money Market Fund, Invesco Oppenheimer Government Cash Reserves Fund, Invesco Oppenheimer Government Money Market Fund, Invesco Premier Portfolio and Invesco Premier U.S. Government Money Portfolio value portfolio securities on the basis of amortized cost, which approximates market value. This method of valuation is designed to enable a Fund to price its shares at $1.00 per share. The Funds cannot guarantee their net asset value will always remain at $1.00 per share. Invesco Premier Tax-Exempt Portfolio values its portfolio securities for which market quotations are readily available at market value, and calculates its net asset values to four decimals (e.g., $1.0000). Securities and other assets quoted in foreign currencies are valued in U.S. dollars based on the prevailing exchange rates on that day. The Fund values securities and assets for which market quotations are unavailable at their “fair value,” which is described below.

Even when market quotations are available, they may be stale or unreliable because the security is not traded frequently, trading on the security ceased before the close of the trading market or issuer specific events occurred after the security ceased trading or because of the passage of time between the close of the market on which the security trades and the close of the NYSE and when the Fund calculates its net asset value. Issuer specific events may cause the last market quotation to be unreliable. Such events may include a merger or insolvency, events that affect a geographical area or an industry segment, such as political events or natural disasters, or market events, such as a significant movement in the U.S. market. Where the Adviser determines that the closing price of the security is stale or unreliable, the Adviser will value the security at its fair value.

Fair value is that amount that the owner might reasonably expect to receive for the security upon its current sale. A fair value price is an estimated price that requires consideration of all appropriate factors, including indications of fair value available from pricing services. Fair value pricing involves judgment and a Fund that uses fair value methodologies may value securities higher or lower than another Fund using market quotations or its own fair value methodologies to price the same securities. Investors who purchase or redeem Fund shares on days when the Fund is holding fair-valued securities may receive a greater or lesser number of shares, or higher or lower redemption proceeds, than they would have received if the Fund had not fair-valued the security or had used a different methodology.

The Board has delegated the daily determination of fair value prices to the Adviser’s valuation committee, which acts in accordance with Board approved policies. Fair value pricing methods and pricing services can change from time to time as approved by the Board.

The intended effect of applying fair value pricing is to compute an NAV that accurately reflects the value of a Fund’s portfolio at the time that the NAV is calculated. An additional intended effect is to discourage those seeking to take advantage of arbitrage opportunities resulting from “stale” prices and to mitigate the dilutive impact of any such arbitrage. However, the application of fair value pricing cannot eliminate the possibility that arbitrage opportunities will exist.

Specific types of securities are valued as follows:

Senior Secured Floating Rate Loans and Senior Secured Floating Rate Debt Securities. Senior secured floating rate loans and senior secured floating rate debt securities are fair valued using evaluated quotes provided by an independent pricing service. Evaluated quotes provided by the pricing service may reflect appropriate factors such as market quotes, ratings, tranche type, industry, company performance, spread, individual trading characteristics, institution-size trading in similar groups of securities and other market data.

Domestic Exchange Traded Equity Securities. Market quotations are generally available and reliable for domestic exchange traded equity securities. If market quotations are not available or are unreliable, the Adviser will value the security at fair value in good faith using procedures approved by the Board.

Foreign Securities. If market quotations are available and reliable for foreign exchange traded equity securities, the securities will be valued at the market quotations. Because trading hours for certain foreign securities end before the close of the NYSE, closing market quotations may become unreliable. If between the time trading ends on a particular security and the close of the customary trading session on the NYSE events occur that are significant and may make the closing price unreliable, the Fund may fair value the security. If an issuer specific event has occurred that the Adviser determines, in its judgment, is likely to have affected the closing price of a foreign security, it will price the security at fair value. The Adviser also relies on a screening process from a pricing vendor to indicate the degree of certainty, based on historical data, that the closing price in the principal market where a foreign security trades is not the current market value as of the close of the NYSE. For foreign securities where the Adviser believes, at the approved degree of certainty, that the price is not reflective of current market value, the Adviser will use the indication of fair value from the pricing service to determine the fair value of the security. The pricing vendor, pricing methodology or degree of certainty may change from time to time.

Fund securities primarily traded on foreign markets may trade on days that are not business days of the Fund. Because the net asset value of Fund shares is determined only on business days of the Fund, the value of the portfolio securities of a Fund that invests in foreign securities may change on days when you will not be able to purchase or redeem shares of the Fund.

Fixed Income Securities. Fixed income securities, such as government, corporate, asset-backed and municipal bonds, convertible securities, including high yield or junk bonds, and loans, normally are valued on the basis of prices provided by independent pricing services. Prices provided by the pricing services may be determined without exclusive reliance on quoted prices, and may reflect appropriate factors such as institution-size trading in similar groups of securities, developments related to special securities, dividend rate, maturity and other market data. Pricing services generally value fixed income securities assuming orderly transactions of institutional round lot size, but a Fund may hold or transact in the same securities in smaller, odd lot sizes. Odd lots often trade at lower prices than institutional round lots. Prices received from pricing services are fair value prices. In addition, if the price provided by the pricing service and independent quoted prices are unreliable, the Adviser’s valuation committee will fair value the security using procedures approved by the Board.

Short-term Securities. Invesco Government Money Market Fund, Invesco Oppenheimer Government Cash Reserves Fund, Invesco Oppenheimer Government Money Market Fund, Invesco Premier Portfolio and Invesco Premier U.S. Government Money Portfolio value all their securities at amortized cost. Invesco Limited Term Municipal Income Fund values variable rate securities that have an unconditional demand or put feature exercisable within seven days or less at par, which reflects the market value of such securities.

Futures and Options. Futures contracts are valued at the final settlement price set by the exchange on which they are principally traded. Options are valued on the basis of market quotations, if available.

Swap Agreements. Swap Agreements are fair valued using an evaluated quote provided by an independent pricing service. Evaluated quotes provided by the pricing service are based on a model that may include end of day net present values, spreads, ratings, industry and company performance.

Open-end Funds. If a Fund invests in other open-end funds, other than open-end funds that are exchange traded, the investing Fund will calculate its net asset value using the net asset value of the underlying fund in which it invests, and the prospectuses for such open-end funds explain the circumstances under which they will use fair value pricing and the effects of using fair value pricing.

Each Fund, except for Invesco Government Money Market Fund, Invesco Premier Portfolio, Invesco Premier Tax-Exempt Portfolio and Invesco Premier U.S. Government Money Portfolio, determines the net asset value of its shares on each day the NYSE is open for business (a business day), as of the close of the customary trading session, or earlier NYSE closing time that day. Invesco Government Money Market Fund, Invesco Premier Portfolio and Invesco Premier U.S. Government Money Portfolio will generally determine the net asset value of their shares at 5:30 p.m. Eastern Time on each business day. Invesco Premier Tax-Exempt Portfolio will generally determine the net asset value of its shares at 3:00 p.m. Eastern Time on each business day. A business day for Invesco Government Money Market Fund, Invesco Premier Portfolio, Invesco Premier Tax-Exempt Portfolio and Invesco Premier U.S. Government Money Portfolio is any day that (1) both the Federal Reserve Bank of New York and a Fund’s custodian are open for business and (2) the primary trading markets for the Fund’s portfolio instruments are open and the Fund’s management believes there is an adequate market to meet purchase and redemption requests. Invesco Government Money Market Fund, Invesco Premier Portfolio, Invesco Premier Tax-Exempt Portfolio and Invesco Premier U.S. Government Money Portfolio are authorized not to open for trading on a day that is otherwise a business day if the Securities Industry and Financial Markets Association (SIFMA) recommends that government securities dealers not open for trading; any such day will not be considered a business day. Invesco Government Money Market Fund, Invesco Oppenheimer Government Cash Reserves Fund, Invesco Oppenheimer Government Money Market Fund, Invesco Premier Portfolio, Invesco Premier Tax-Exempt Portfolio and Invesco Premier U.S. Government Money Portfolio also may close early on a business day if SIFMA recommends that government securities dealers close early. If Invesco Government Money Market Fund, Invesco Premier Portfolio, Invesco Premier Tax-Exempt Portfolio or Invesco Premier U.S. Government Money Portfolio uses its discretion to close early on a business day, the Fund will calculate its net asset value as of the time of such closing Invesco Oppenheimer Government Cash Reserves Fund, Invesco Oppenheimer Government Money Market Fund and Invesco Premier Portfolio are authorized to not open for trading on a day that is otherwise a business day if the NYSE recommends that government securities dealers not open for trading; any such day will not be considered a business day. Invesco Premier Portfolio also may close early on a business day if the NYSE recommends that government securities dealers close early.

For financial reporting purposes and shareholder transactions on the last day of the fiscal quarter, transactions are normally accounted for on a trade date basis. For purposes of executing shareholder transactions in the normal course of business (other than shareholder transactions at a fiscal period-end), each Fund’s portfolio securities transactions are recorded no later than the first business day following the trade date.

The Invesco Balanced-Risk Allocation Fund, Invesco Balanced-Risk Commodity Strategy Fund, Invesco Macro Allocation Strategy Fund, Invesco Global Targeted Returns Fund, Invesco Multi-Asset Income Fund, Invesco Oppenheimer Capital Income Fund, Invesco Oppenheimer Global High Yield Fund, Invesco Oppenheimer Global Multi-Asset Growth Fund, Invesco Oppenheimer Global Strategic Income Fund, Invesco Oppenheimer Gold & Special Minerals Fund, Invesco Oppenheimer International Bond Fund, Invesco Oppenheimer Global Allocation Fund, and Invesco Oppenheimer Fundamental Alternatives Fund may each invest up to 25% of their total assets in shares of their respective subsidiaries (the Subsidiaries). The Subsidiaries offer to redeem all or a portion of their shares at the current net asset value per share every regular business day. The value of shares of the Subsidiaries will fluctuate with the value of the respective Subsidiary’s portfolio investments. The Subsidiaries price their portfolio investments pursuant to the same pricing and valuation methodologies and procedures used by the Funds, which require, among other things, that each of the Subsidiaries’ portfolio investments be marked-to-market (that is, the value on each of the Subsidiaries’ books changes) each business day to reflect changes in the market value of the investment.

Each Fund’s current net asset value per share is made available on the Funds’ website at www.invesco.com/us.

Fair Value Pricing

Securities owned by a Fund (except Invesco Government Money Market Fund, Invesco Oppenheimer Government Cash Reserves Fund, Invesco Oppenheimer Government Money Market Fund, Invesco Premier Portfolio and Invesco Premier U.S. Government Money Portfolio) are to be valued at current market value if market quotations are readily available. All other securities and assets of a Fund for which market quotations are not readily available are to be valued at fair value determined in good faith using procedures approved by the Board. An effect of fair value pricing may be to reduce the ability of frequent traders to take advantage of arbitrage opportunities resulting from potentially “stale” prices of portfolio holdings. However, it cannot eliminate the possibility of frequent trading.

Timing of Orders

Each Fund prices purchase, exchange and redemption orders at the net asset value next calculated by the Fund after the Fund’s transfer agent, authorized agent or designee receives an order in good order for the Fund. Purchase, exchange and redemption orders must be received prior to the close of business on a business day, as defined by the applicable Fund, to receive that day’s net asset value. Any applicable sales charges are applied at the time an order is processed.

Currently, certain financial intermediaries may serve as agents for the Funds and accept orders on their behalf. Where a financial intermediary serves as agent, the order is priced at the Fund’s net asset value next calculated after it is accepted by the financial intermediary. In such cases, if requested by a Fund, the financial intermediary is responsible for providing information with regard to the time that such order for purchase, redemption or exchange was received. Orders submitted through a financial intermediary that has not received authorization to accept orders on a Fund’s behalf are priced at the Fund’s net asset value next calculated by the Fund after it receives the order from the financial intermediary and accepts it, which may not occur on the day submitted to the financial intermediary.

Additional Information Regarding Deferred Tax Liability (only applicable to the Invesco Oppenheimer Steelpath Funds)

In calculating the Fund’s daily NAV, the Fund will, among other things, account for its deferred tax liability and/or asset balances. As a result, any deferred tax liability and/or asset is reflected in the Fund’s daily NAV.

The Fund will accrue a deferred income tax liability balance, at the applicable U.S. federal corporate income tax rate plus an estimated state and local income tax rate for its future tax liability associated with that portion of MLP distributions considered to be a tax-deferred return of capital, as well as for its future tax liability associated with the capital appreciation of its investments. The Fund’s current and deferred tax liability, if any, will depend upon the Fund’s net investment gains and losses and realized and unrealized gains and losses on investments and therefore may vary greatly from year to year depending on the nature of the Fund’s investments, the performance of those investments and general market conditions. Any deferred tax liability balance will reduce the Fund’s NAV. Upon the Fund’s sale of an MLP security, the Fund may be liable for previously deferred taxes.

The Fund will accrue, in accordance with generally accepted accounting principles, a deferred tax asset balance, which reflects an estimate of the Fund’s future tax benefit associated with net operating losses and unrealized losses. Any deferred tax asset balance will increase the Fund’s NAV. To the extent the Fund has a deferred tax asset balance, the Fund will assess, in accordance with generally accepted accounting principles, whether a valuation allowance, which would offset the value of some or all of the Fund’s deferred tax asset balance, is required. Pursuant to Financial Accounting Standards Board Accounting Standards Codification 740 (FASB ASC 740), the Fund will assess a valuation allowance to reduce some or all of the deferred tax asset balance if, based on the weight of all available evidence, both negative and positive, it is more likely than not that some or all of the deferred tax asset will not be realized. The Fund will use judgment in considering the relative impact of negative and positive evidence. The weight given to the potential effect of negative and positive evidence will be commensurate with the extent to which such evidence can be objectively

verified. The Fund’s assessment considers, among other matters, the nature, frequency and severity of current and cumulative losses, forecasts of future profitability (which are dependent on, among other factors, future MLP cash distributions), the duration of statutory carryforward periods and the associated risk that operating loss carryforwards may be limited or expire unused. However, this assessment generally may not consider the potential for market value increases with respect to the Fund’s investments in equity securities of MLPs or any other securities or assets. Significant weight is given to the Fund’s forecast of future taxable income, which is based on, among other factors, the expected continuation of MLP cash distributions at or near current levels. Consideration is also given to the effects of the potential of additional future realized and unrealized gains or losses on investments and the period over which deferred tax assets can be realized, as federal tax net operating loss carryforwards do not expire and federal capital loss carryforwards expire in five years. Recovery of a deferred tax asset is dependent on continued payment of the MLP cash distributions at or near current levels in the future and the resultant generation of taxable income. The Fund will assess whether a valuation allowance is required to offset some or all of any deferred tax asset in connection with the calculation of the Fund’s NAV per share each day; however, to the extent the final valuation allowance differs from the estimates the Fund used in calculating the Fund’s daily NAV, the application of such final valuation allowance could have a material impact on the Fund’s NAV.

The Fund’s deferred tax asset and/or liability balances are estimated using estimates of effective tax rates expected to apply to taxable income in the years such balances are realized. The Fund will rely to some extent on information provided by MLPs in determining the extent to which distributions received from MLPs constitute a return of capital, which may not be provided to the Fund on a timely basis, to estimate the Fund’s deferred tax liability and/or asset balances for purposes of financial statement reporting and determining its NAV. If such information is not received from such MLPs on a timely basis, the Fund will estimate the extent to which distributions received from MLPs constitute a return of capital based on average historical tax characterization of distributions made by MLPs. The Fund’s estimates regarding its deferred tax liability and/or asset balances are made in good faith; however, the daily estimate of the Fund’s deferred tax liability and/or asset balances used to calculate the Fund’s NAV could vary dramatically from the Fund’s actual tax liability. Actual income tax expense, if any, will be incurred over many years, depending on if and when investment gains and losses are realized, the then-current basis of the Fund’s assets and other factors. As a result, the determination of the Fund’s actual tax liability may have a material impact on the Fund’s NAV. The Fund’s daily NAV calculation will be based on then current estimates and assumptions regarding the Fund’s deferred tax liability and/or asset balances and any applicable valuation allowance, based on all information available to the Fund at such time. From time to time, the Fund may modify its estimates or assumptions regarding its deferred tax liability and/or asset balances and any applicable valuation allowance as new information becomes available. Modifications of the Fund’s estimates or assumptions regarding its deferred tax liability and/or asset balances and any applicable valuation allowance, changes in generally accepted accounting principles or related guidance or interpretations thereof, limitations imposed on net operating losses (if any) and changes in applicable tax law could result in increases or decreases in the Fund’s NAV per share, which could be material.

Taxes (applicable to all Funds except for the Invesco Oppenheimer SteelPath Funds, Invesco Oppenheimer Master Loan Fund, Invesco Oppenheimer Master Inflation Protected Securities Fund and Invesco Oppenheimer Master Event-Linked Bond Fund)

A Fund intends to qualify each year as a regulated investment company (RIC) and, as such, is not subject to entity-level tax on the income and gain it distributes to shareholders. If you are a taxable investor, dividends and distributions you receive from a Fund generally are taxable to you whether you reinvest distributions in additional Fund shares or take them in cash. Every year, you will be sent information showing the amount of dividends

and distributions you received from a Fund during the prior calendar year. In addition, investors in taxable accounts should be aware of the following basic tax points as supplemented below where relevant:

Fund Tax Basics

■	A Fund earns income generally in the form of dividends or interest on its investments. This income, less expenses incurred in the operation of a Fund, constitutes the Fund’s net investment income from which dividends may be paid to you. If you are a taxable investor, distributions of net investment income generally are taxable to you as ordinary income.
■	Distributions of net short-term capital gains are taxable to you as ordinary income. A Fund with a high portfolio turnover rate (a measure of how frequently assets within a Fund are bought and sold) is more likely to generate short-term capital gains than a Fund with a low portfolio turnover rate.
■	Distributions of net long-term capital gains are taxable to you as long-term capital gains no matter how long you have owned your Fund shares.
■	A portion of income dividends paid by a Fund to you may be reported as qualified dividend income eligible for taxation by individual shareholders at long-term capital gain rates, provided certain holding period requirements are met. These reduced rates generally are available for dividends derived from a Fund’s investment in stocks of domestic corporations and qualified foreign corporations. In the case of a Fund that invests primarily in debt securities, either none or only a nominal portion of the dividends paid by the Fund will be eligible for taxation at these reduced rates.
■	The use of derivatives by a Fund may cause the Fund to realize higher amounts of ordinary income or short-term capital gain, distributions from which are taxable to individual shareholders at ordinary income tax rates rather than at the more favorable tax rates for long-term capital gain.
■	Distributions declared to shareholders with a record date in December—if paid to you by the end of January—are taxable for federal income tax purposes as if received in December.
■	Any long-term or short-term capital gains realized on the sale or redemption of your Fund shares will be subject to federal income tax. For tax purposes an exchange of your shares for shares of another Fund is the same as a sale. An exchange occurs when the purchase of shares of a Fund is made using the proceeds from a redemption of shares of another Fund and is effectuated on the same day as the redemption. Your gain or loss is calculated by subtracting from the gross proceeds your cost basis. Gross proceeds and, for shares acquired on or after January 1, 2012 and disposed of after that date, cost basis will be reported to you and the Internal Revenue Service (IRS). Cost basis will be calculated using the Fund’s default method of average cost, unless you instruct the Fund to use a different calculation method. As a service to you, the Fund will continue to provide to you (but not the IRS) cost basis information for shares acquired before 2012, when available, using the average cost method. Shareholders should carefully review the cost basis information provided by a Fund and make any additional basis, holding period or other adjustments that are required when reporting these amounts on their federal income tax returns. If you hold your Fund shares through a broker (or other nominee), please contact that broker (nominee) with respect to reporting of cost basis and available elections for your account. For more information about the cost basis methods offered by Invesco, please refer to the Tax Center located under the Client Accounts menu of our website at www.Invesco.com/us.
■	The conversion of shares of one class of a Fund into shares of another class of the same Fund is not taxable for federal income tax purposes and no gain or loss will be reported on the transaction. This is true whether the conversion occurs automatically pursuant to the terms of the class or is initiated by the shareholder.
■	At the time you purchase your Fund shares, the Fund’s net asset value may reflect undistributed income or undistributed capital gains. A subsequent distribution to you of such amounts, although constituting a return of your investment, would be taxable. Buying shares in a Fund just before it declares an income dividend or capital gains distribution is

	sometimes known as “buying a dividend.” In addition, a Fund’s net asset value may, at any time, reflect net unrealized appreciation, which may result in future taxable distributions to you.
■	By law, if you do not provide a Fund with your proper taxpayer identification number and certain required certifications, you may be subject to backup withholding on any distributions of income, capital gains, or proceeds from the sale of your shares. A Fund also must withhold if the IRS instructs it to do so. When withholding is required, the amount will be 24% of any distributions or proceeds paid.
■	An additional 3.8% Medicare tax is imposed on certain net investment income (including ordinary dividends and capital gain distributions received from a Fund and net gains from redemptions or other taxable dispositions of Fund shares) of U.S. individuals, estates and trusts to the extent that such person’s “modified adjusted gross income” (in the case of an individual) or “adjusted gross income” (in the case of an estate or trust) exceeds a threshold amount. This Medicare tax, if applicable, is reported by you on, and paid with, your federal income tax return.
■	You will not be required to include the portion of dividends paid by a Fund derived from interest on U.S. government obligations in your gross income for purposes of personal and, in some cases, corporate income taxes in many state and local tax jurisdictions. The percentage of dividends that constitutes dividends derived from interest on federal obligations will be determined annually. This percentage may differ from the actual percentage of interest received by the Fund on federal obligations for the particular days on which you hold shares.
■	Fund distributions and gains from sale or exchange of your Fund shares generally are subject to state and local income taxes.
■	If a Fund qualifies to pass through to you the tax benefits from foreign taxes it pays on its investments, and elects to do so, then any foreign taxes it pays on these investments may be passed through to you. You will then be required to include your pro-rata share of these taxes in gross income, even though not actually received by you, and will be entitled either to deduct your share of these taxes in computing your taxable income, or to claim a foreign tax credit for these taxes against your U.S. federal income tax.
■	Foreign investors should be aware that U.S. withholding, special certification requirements to avoid U.S. backup withholding and claim any treaty benefits, and estate taxes may apply to an investment in a Fund.
■	Under the Foreign Account Tax Compliance Act (FATCA), a Fund will be required to withhold a 30% tax on income dividends made by the Fund to certain foreign entities, referred to as foreign financial institutions or non-financial foreign entities, that fail to comply (or be deemed compliant) with extensive reporting and withholding requirements designed to inform the U.S. Department of the Treasury of U.S.-owned foreign investment accounts. After December 31, 2018, FATCA withholding also would have applied to certain capital gain distributions, return of capital distributions and the proceeds arising from the sale of Fund shares; however, based on proposed regulations issued by the IRS, which can be relied upon currently, such withholding is no longer required unless final regulations provide otherwise (which is not expected). A Fund may disclose the information that it receives from its shareholders to the IRS, non-U.S. taxing authorities or other parties as necessary to comply with FATCA or similar laws. Withholding also may be required if a foreign entity that is a shareholder of a Fund fails to provide the Fund with appropriate certifications or other documentation concerning its status under FATCA.
■	If a Fund invests in an underlying fund taxed as a RIC, please see any relevant section below for more information regarding the Fund’s investment in such underlying fund.

The above discussion concerning the taxability of Fund dividends and distributions and of redemptions and exchanges of Fund shares is inapplicable to investors holding shares through a tax-advantaged arrangement, such as Retirement and Benefit Plans or 529 college savings plans. Such investors should refer to the applicable account documents/program description for that arrangement for more information regarding the tax consequences of holding and redeeming Fund shares.

Funds Investing in Municipal Securities

■	You will not be required to include the “exempt-interest” portion of dividends paid by the Fund in either your gross income for federal income tax purposes or your net investment income subject to the additional 3.8% Medicare tax. You will be required to report the receipt of exempt-interest dividends and other tax-exempt interest on your federal income tax returns. The percentage of dividends that constitutes exempt-interest dividends will be determined annually. This percentage may differ from the actual percentage of exempt interest received by the Fund for the particular days in which you hold shares.
■	A Fund may invest in municipal securities the interest on which constitutes an item of tax preference and could give rise to a federal alternative minimum tax liability for noncorporate shareholders, unless such municipal securities were issued in 2009 or 2010.
■	Exempt-interest dividends from interest earned on municipal securities of a state, or its political subdivisions, generally are exempt from that state’s personal income tax. Most states, however, do not grant tax-free treatment to interest from municipal securities of other states.
■	A Fund may invest a portion of its assets in securities that pay income that is not tax-exempt. To the extent that dividends paid by a Fund are derived from taxable investments or realized capital gains, they will be taxable as ordinary income or long-term capital gains.
■	A Fund may distribute to you any market discount and net short-term capital gains from the sale of its portfolio securities. If you are a taxable investor, Fund distributions from this income are taxable to you as ordinary income, and generally will neither qualify for the dividends-received deduction in the case of corporate shareholders nor as qualified dividend income subject to reduced rates of taxation in the case of noncorporate shareholders.
■	Exempt-interest dividends from a Fund are taken into account when determining the taxable portion of your social security or railroad retirement benefits, may be subject to state and local income taxes, may affect the deductibility of interest on certain indebtedness, and may have other collateral federal income tax consequences for you.
■	There are risks that: (a) a security issued as tax-exempt may be reclassified by the IRS or a state tax authority as taxable and/or (b) future legislative, administrative or court actions could adversely impact the qualification of income from a tax-exempt security as tax-free. Such reclassifications or actions could cause interest from a security to become taxable, possibly retroactively, subjecting you to increased tax liability. In addition, such reclassifications or actions could cause the value of a security, and therefore, the value of the Fund’s shares, to decline.

Money Market Funds

■	A Fund does not anticipate realizing any long-term capital gains.
■	If a Fund, other than Invesco Premier Tax-Exempt Portfolio, expects to maintain a stable net asset value of $1.00 per share, investors should not have any gain or loss on sale or exchange of Fund shares (unless the investor incurs a liquidity fee on such sale or exchange). See “Liquidity Fees and Redemption Gates.”
■	Invesco Premier Tax-Exempt Portfolio rounds its current net asset value per share to a minimum of the fourth decimal place, therefore, investors will have gain or loss on sale or exchange of shares of the Fund calculated by subtracting your cost basis from the gross proceeds received from the sale or exchange.
■	There is some degree of uncertainty with respect to the tax treatment of liquidity fees received by a Fund, and such tax treatment may be the subject of future IRS guidance. If a Fund receives liquidity fees, it will consider the appropriate tax treatment of such fees to the Fund at such time.
■	Because the Invesco Premier Tax-Exempt Portfolio is not expected to maintain a stable share price, a sale or exchange of Fund shares may result in a capital gain or loss for you. Unless you choose to adopt a simplified “NAV method” of accounting (described below), any capital gain or loss on the sale or exchange of Fund shares (as noted above) generally will be treated either as short-term if you held your Fund shares for one year or less, or long-term if you held your Fund shares longer. If you elect

to adopt the NAV method of accounting, rather than computing gain or loss on every taxable disposition of Fund shares as described above, you would determine your gain or loss based on the change in the aggregate value of your Fund shares during a computation period (such as your taxable year), reduced by your net investment (purchases minus sales) in those shares during that period. Under the NAV method, any resulting net capital gain or loss would be treated as short-term capital gain or loss.

Funds Investing in Real Estate Securities

■	Because of “noncash” expenses such as property depreciation, the cash flow of a REIT that owns properties will exceed its taxable income. The REIT, and in turn a Fund, may distribute this excess cash to shareholders. Such a distribution is classified as a return of capital. Return of capital distributions generally are not taxable to you. Your cost basis in your Fund shares will be decreased by the amount of any return of capital. Any return of capital distributions in excess of your cost basis will be treated as capital gains.
■	Dividends paid to shareholders from the Funds’ investments in U.S. REITs generally will not qualify for taxation at long-term capital gain rates applicable to qualified dividend income.
■	The Fund may derive “excess inclusion income” from certain equity interests in mortgage pooling vehicles either directly or through an investment in a U.S. REIT. Please see the SAI for a discussion of the risks and special tax consequences to shareholders in the event the Fund realizes excess inclusion income in excess of certain threshold amounts.
■	Under the Tax Cuts and Jobs Act, “qualified REIT dividends” (i.e., ordinary REIT dividends other than capital gain dividends and portions of REIT dividends designated as qualified dividend income) are treated as eligible for a 20% deduction by noncorporate taxpayers. Proposed regulations issued by the IRS, which can be relied upon currently, enable the Fund to pass through the special character of “qualified REIT dividends” to a shareholder, provided both the Fund and a shareholder meet certain holding period requirements with respect to their shares.
■	The Fund’s foreign shareholders should see the SAI for a discussion of the risks and special tax consequences to them from a sale of a U.S. real property interest by a REIT in which the Fund invests.

Funds Investing in Partnerships

■	Taxes, penalties, and interest associated with an audit of a partnership are generally required to be assessed and collected at the partnership level. Therefore, an adverse federal income tax audit of a partnership that a Fund invests in (including MLPs taxed as partnerships) could result in the Fund being required to pay federal income tax. A Fund may have little input in any audit asserted against a partnership and may be contractually or legally obligated to make payments in regard to deficiencies asserted without the ability to put forward an independent defense. Accordingly, even if a partnership in which the Fund invests were to remain classified as a partnership (instead of as a corporation), it could be required to pay additional taxes, interest and penalties as a result of an audit adjustment, and the Fund, as a direct or indirect partner of such partnership, could be required to bear the economic burden of those taxes, interest and penalties, which would reduce the value of Fund shares.
■	Under the Tax Cuts and Jobs Act “qualified publicly traded partnership income” is treated as eligible for a 20% deduction by noncorporate taxpayers. The legislation does not contain a provision permitting a RIC, such as a Fund, to pass the special character of this income through to its shareholders. It is uncertain whether a future technical corrections bill or regulations issued by the IRS will address this issue to enable a Fund to pass through the special character of “qualified publicly traded partnership income” to its shareholders.
■	Some amounts received by a Fund from the MLPs in which it invests likely will be treated as returns of capital to such Fund because of accelerated deductions available to the MLPs. The receipt of returns of capital from the MLPs in which a Fund invests could cause some or all of the Fund’s distributions to be classified as a return of capital. Return of capital distributions generally are not taxable to you. Your cost basis in your Fund

shares will be decreased by the amount of any return of capital. Any return of capital distributions in excess of your cost basis will be treated as capital gains.

Funds Investing in Commodities

■	The Funds’ strategies of investing through their respective Subsidiary in derivatives and other financially linked instruments whose performance is expected to correspond to the commodity markets may cause the Funds to recognize more ordinary income and short-term capital gains taxable as ordinary income than would be the case if the Funds invested directly in commodities.
■	The Funds must meet certain requirements under the Code for favorable tax treatment as a RIC, including asset diversification and income requirements. The Funds intend to treat the income each derives from commodity-linked notes as qualifying income based on an opinion from counsel confirming that income from such investments should be qualifying income because such commodity-linked notes constitute securities under section 2(a)(36) of the 1940 Act. Each Subsidiary will be classified for federal income tax purposes as a controlled foreign corporation (CFC) with respect to the Fund. As such, the Fund will be required to include in its gross income each year amounts earned by the Subsidiary during that year (“Subpart F” income), whether or not such earnings are distributed by the Subsidiary to the Fund (deemed inclusions). Recently released Treasury Regulations also permit the Fund to treat such deemed inclusions of “Subpart F” income from the Subsidiary as qualifying income to the Fund, even if the Subsidiary does not make a distribution of such income. Consequently, the Fund and the Subsidiary reserve the right to rely on deemed inclusions being treated as qualifying income to the Fund consistent with recently released Treasury Regulations. If, contrary to the opinion of counsel or other guidance issued by the IRS, the IRS were to determine that income from direct investment in commodity-linked notes is non-qualifying, a Fund might fail to satisfy the income requirement. In lieu of disqualification, the Funds are permitted to pay a tax for certain failures to satisfy the asset diversification or income requirements, which, in general, are limited to those due to reasonable cause and not willful neglect. The Funds intend to limit their investments in their respective Subsidiary to no more than 25% of the value of each Fund’s total assets in order to satisfy the asset diversification requirement.
■	The Invesco Balanced-Risk Commodity Strategy Fund received a PLR from the IRS holding that income from a form of commodity-linked note is qualifying income. However, the IRS has revoked the ruling on a prospective basis, thus allowing the Fund to continue to rely on its private letter ruling to treat income from commodity-linked notes purchased on or before June 30, 2017 as qualifying income. After that time the Invesco Balanced-Risk Commodity Strategy Fund expects to rely on the opinion of counsel described above.

Funds Investing in Foreign Currencies

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The Funds may realize gains from the sale or other disposition of foreign currencies (including but not limited to gains from options, futures or forward contracts) derived from investing in securities or foreign currencies. The U.S. Treasury Department is authorized to issue regulations on whether the realization of such foreign currency gains is qualified income for the Funds. If such regulations are issued, each Fund may not qualify as a RIC and/or the Fund may change its investment policy. As of the date of this prospectus, no regulations have been issued pursuant to this authorization. It is possible, however, that such regulations may be issued in the future. Additionally, the IRS has not issued any guidance on how to apply the asset diversification test to such foreign currency positions. Thus, the IRS’ determination as to how to treat such foreign currency positions for purposes of satisfying the asset diversification test might differ from that of each Fund resulting in the Fund’s failure to qualify as a RIC. In lieu of disqualification, each Fund is permitted to pay a tax for certain failures to satisfy the asset diversification or income requirements, which, in general, are limited to those due to reasonable cause and not willful neglect.

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The Funds’ transactions in foreign currencies may give rise to ordinary income or loss to the extent such income or loss results from fluctuations in the value of the foreign currency concerned. This treatment could increase or decrease the Funds' ordinary income distributions to you, and may cause some or all of the Funds' previously distributed income to be classified as a return of capital. Return of capital distributions generally are not taxable to you. Your cost basis in your Fund shares will be decreased by the amount of any return of capital. Any return of capital distributions in excess of your cost basis will be treated as capital gains.

This discussion of “Taxes” is for general information only and not tax advice. All investors should consult their own tax advisers as to the federal, state, local and foreign tax provisions applicable to them.

Taxes (applicable to the Invesco Oppenheimer SteelPath Funds)

Although the Code generally provides that a RIC does not pay an entity-level income tax, provided that it distributes all or substantially all of its income, the Fund is not and does not anticipate becoming eligible to elect to be treated as a RIC because most or substantially all of the Fund’s investments will consist of investments in MLP securities. The RIC tax rules therefore have no application to the Fund or to its shareholders. As a result, the Fund is treated as a regular corporation, or “C” corporation, for U.S. federal income tax purposes, and generally is subject to U.S. federal income tax on its taxable income at the corporate income tax rate. In addition, as a regular corporation, the Fund will be subject to state and local taxes by reason of its tax status and its investments in MLPs. Therefore, the Fund may have to pay federal, multiple state, and local taxes, which would reduce the Fund’s cash available to make distributions to shareholders. An estimate for federal, state, and local tax liabilities will reduce the fund’s net asset value. The extent to which the Fund is required to pay U.S. federal, state or local corporate income, franchise or other corporate taxes could materially reduce the Fund’s cash available to make distributions to shareholders. In addition, investors in taxable accounts should be aware of the following basic tax points as supplemented below where relevant:

Fund Tax Basics

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The Fund intends to invest a significant portion of its assets in MLPs, which are generally treated as partnerships for U.S. federal income tax purposes. To the extent that the Fund invests in equity securities of an MLP, the Fund will be a partner in such MLP. Accordingly, the Fund will be required to take into account the Fund’s allocable share of the income, gains, losses, deductions, and credits recognized by each such MLP, regardless of whether the MLP distributes cash to the Fund. MLP distributions to partners, such as the Fund, are not taxable unless the cash amount (or in certain cases, the fair market value of marketable securities) distributed exceeds the Fund’s basis in its MLP interest. The Fund expects that the cash distributions it will receive with respect to its investments in equity securities of MLPs will exceed the net taxable income allocated to the Fund from such MLPs because of tax deductions such as depreciation, amortization and depletion that will be allocated to the Fund from the MLPs. No assurance, however, can be given in this regard. If this expectation is not realized, the Fund will have a larger corporate income tax expense than expected, which will result in less cash available for distribution to shareholders.

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The Fund will recognize gain or loss on the sale, exchange or other taxable disposition of its portfolio assets, including equity securities of MLPs, equal to the difference between the amount realized by the Fund on the sale, exchange or other taxable disposition and the Fund’s adjusted tax basis in such assets. Any such gain will be subject to U.S. federal income tax at the corporate income tax rate, regardless of how long the Fund has held such assets since preferential capital gain rates do not apply to regular corporations such as the Fund. The amount realized by the Fund in any case generally will be the amount paid by the purchaser of the assets plus, in the case of MLP equity securities, the Fund’s allocable share, if any, of the MLP’s debt that will be allocated to the purchaser as a result of the sale, exchange or other taxable disposition. The Fund’s tax basis in its equity securities in an MLP generally is equal

	to the amount the Fund paid for the equity securities, (i) increased by the Fund’s allocable share of the MLP’s net taxable income and certain MLP debt, if any, and (ii) decreased by the Fund’s allocable share of the MLP’s net losses and any distributions received by the Fund from the MLP. Although any distribution by an MLP to the Fund in excess of the Fund’s allocable share of such MLP’s net taxable income may create a temporary economic benefit to the Fund, net of a deferred tax liability, such distribution will decrease the Fund’s tax basis in its MLP investment and will therefore increase the amount of gain (or decrease the amount of loss) that will be recognized on the sale of an equity security in the MLP by the Fund. To the extent that the Fund has a net capital loss in any year, the net capital loss can be carried back three taxable years and forward five taxable years to reduce the Fund’s capital gains in such years. In the event a capital loss carryover cannot be utilized in the carryover periods, the Fund’s federal income tax liability may be higher than expected, which will result in less cash available to distribute to shareholders.
■	Distributions by the Fund of cash or property in respect of the shares (other than certain distributions in redemption of shares) will be treated as dividends for U.S. federal income tax purposes to the extent paid from the Fund’s current or accumulated earnings and profits (as determined under U.S. federal income tax principles). Generally, the Fund’s earnings and profits are computed based upon the Fund’s taxable income (loss), with certain specified adjustments. Any such dividend likely will be eligible for the dividends-received deduction if received by an otherwise qualifying corporate U.S. shareholder that meets certain holding period and other requirements for the dividends-received deduction. Dividends paid by the Fund to certain non-corporate U.S. shareholders (including individuals), generally are eligible for U.S. federal income taxation at the rates generally applicable to long-term capital gains for individuals provided that the U.S. shareholder receiving the dividend satisfies applicable holding period and other requirements. Otherwise, dividends paid by the Fund to non-corporate U.S. Shareholders (including individuals) will be taxable at ordinary income rates.
■	If the amount of a Fund distribution exceeds the Fund’s current and accumulated earnings and profits, such excess will be treated first as a tax- deferred return of capital to the extent of, and in reduction of, a shareholder’s tax basis in the shares, and thereafter as capital gain to the extent the shareholder held the shares as a capital asset. Any such capital gain will be long-term capital gain if such shareholder has held the applicable shares for more than one year. The portion of the distribution received by a shareholder from the Fund that is treated as a return of capital will decrease the shareholder’s tax basis in his or her Fund shares (but not below zero), which will result in an increase in the amount of gain (or decrease in the amount of loss) that will be recognized by the shareholder for tax purposes on the later sale of such Fund shares.
■	The Fund anticipates that the cash distributions it will receive with respect to its investments in equity securities of MLPs and which it will distribute to its shareholders will exceed the Fund’s current and accumulated earnings and profits. Accordingly, the Fund expects that only a part of its distributions to shareholders with respect to the shares will be treated as dividends for U.S. federal income tax purposes. No assurance, however, can be given in this regard.
■	Special rules may apply to the calculation of the Fund’s earnings and profits. For example, the Fund’s earnings and profits will be calculated using the straight-line depreciation method rather than the accelerated depreciation method. This difference in treatment may, for example, result in the Fund’s earnings and profits being higher than the Fund’s taxable income or loss in a particular year if the MLPs in which the Fund invests calculate their income using accelerated depreciation. Because of these special earnings profits rules, the Fund may make distributions in a particular year out of earnings and profits (treated as dividends) in excess of the amount of the Fund’s taxable income or loss for such year, which means that a larger percentage of the Fund ’s distributions could be taxable to shareholders as ordinary income instead of tax-deferred return of capital or capital gain.

■	Shareholders that receive distributions in shares rather than in cash will be treated for U.S. federal income tax purposes as having (i) received a cash distribution equal to the fair market value of the shares received and (ii) reinvested such amount in shares.
■	A redemption of shares will be treated as a sale or exchange of such shares, provided the redemption is not essentially equivalent to a dividend, is a substantially disproportionate redemption, is a complete redemption of a shareholder’s entire interest in the Fund, or is in partial liquidation of such Fund. Redemptions that do not qualify for sale or exchange treatment will be treated as distributions as described above. Upon a redemption treated as a sale or exchange under these rules, a shareholder generally will recognize capital gain or loss equal to the difference between the adjusted tax basis of his or her shares and the amount received when they are sold.
■	If the Fund is required to sell portfolio securities to meet redemption requests, the Fund may recognize income and gains for U.S. federal, state and local income and other tax purposes, which may result in the imposition of corporate income or other taxes on the Fund and may increase the Fund’s current and accumulated earnings and profits, which will result in a greater portion of distributions to Fund shareholders being treated as dividends. Any long-term or short-term capital gains realized on sale or redemption of your Fund shares will be subject to federal income tax. For tax purposes an exchange of your shares for shares of another Fund is the same as a sale. An exchange occurs when the purchase of shares of a Fund is made using the proceeds from a redemption of shares of another Fund and is effectuated on the same day as the redemption. Your gain or loss is calculated by subtracting from the gross proceeds your cost basis. Gross proceeds and, for shares acquired on or after January 1, 2012 and disposed of after that date, cost basis will be reported to you and the IRS. Cost basis will be calculated using the Fund’s default method of first-in, first-out (FIFO), unless you instruct the Fund to use a different calculation method. Shareholders should carefully review the cost basis information provided by a Fund and make any additional basis, holding period or other adjustments that are required when reporting these amounts on their federal income tax returns. If you hold your Fund shares through a broker (or other nominee), please contact that broker (nominee) with respect to reporting of cost basis and available elections for your account. For more information about the cost basis methods offered by Invesco, please refer to the Tax Center located under the Accounts & Services menu of our website at www.invesco.com/us.
■	The conversion of shares of one class of a Fund into shares of another class of the same Fund is not taxable for federal income tax purposes and no gain or loss will be reported on the transaction. This is true whether the conversion occurs automatically pursuant to the terms of the class or is initiated by the shareholder.
■	At the time you purchase your Fund shares, the Fund’s net asset value may reflect undistributed income. A subsequent distribution to you of such amounts, although constituting a return of your investment, would be taxable. Buying shares in a Fund just before it declares an income dividend is sometimes known as “buying a dividend.” In addition, a Fund’s net asset value may, at any time, reflect net unrealized appreciation, which may result in future taxable distributions to you.
■	By law, if you do not provide a Fund with your proper taxpayer identification number and certain required certifications, you may be subject to backup withholding on any distributions of income, capital gains, or proceeds from the sale of your shares. A Fund also must withhold if the IRS instructs it to do so. When withholding is required, the amount will be 24% of any distributions or proceeds paid.
■	A 3.8% Medicare tax is imposed on certain net investment income (including ordinary dividends received from a Fund and net gains from redemptions or other taxable dispositions of Fund shares) of U.S. individuals, estates and trusts to the extent that such person’s “modified adjusted gross income” (in the case of an individual) or “adjusted gross income” (in the case of an estate or trust) exceeds a threshold amount. This Medicare tax, if applicable, is reported by you on, and paid with, your federal income tax return.

■	Fund distributions and gains from sale or exchange of your Fund shares generally are subject to state and local income taxes.
■	Foreign investors should be aware that U.S. withholding, special certification requirements to avoid U.S. backup withholding and claim any treaty benefits, and estate taxes may apply to an investment in a Fund.
■	Under the Foreign Account Tax Compliance Act (FATCA), a Fund will be required to withhold a 30% tax on income dividends made by the Fund to certain foreign entities, referred to as foreign financial institutions or non-financial foreign entities, that fail to comply (or be deemed compliant) with extensive reporting and withholding requirements designed to inform the U.S. Department of the Treasury of U.S.-owned foreign investment accounts. After December 31, 2018, FATCA withholding also would have applied to certain capital gain distributions, return of capital distributions and the proceeds arising from the sale of Fund shares; however, based on proposed regulations issued by the IRS, which can be relied upon currently, such withholding is no longer required unless final regulations provide otherwise (which is not expected). A Fund may disclose the information that it receives from its shareholders to the IRS, non-U.S. taxing authorities or other parties as necessary to comply with FATCA or similar laws. Withholding also may be required if a foreign entity that is a shareholder of a Fund fails to provide the Fund with appropriate certifications or other documentation concerning its status under FATCA.
■	Taxes, penalties, and interest associated with an audit of a partnership are generally required to be assessed and collected at the partnership level. Therefore, an adverse federal income tax audit of an MLP taxed as a partnership that the Fund invests in could result in the Fund being required to pay federal income tax. The Fund may have little input in any audit asserted against an MLP and may be contractually or legally obligated to make payments in regard to deficiencies asserted without the ability to put forward an independent defense. Accordingly, even if an MLP in which the Fund invests were to remain classified as a partnership, it could be required to pay additional taxes, interest and penalties as a result of an audit adjustment, and the Fund, as a direct or indirect partner of such MLP, could be required to bear the economic burden of those taxes, interest and penalties, which would reduce the value of Fund shares.
■	Under the Tax Cuts and Jobs Act certain “qualified publicly traded partnership income” (e.g., certain income from certain of the MLPs in which the Fund invests) is treated as eligible for a 20% deduction by noncorporate taxpayers. The Tax Cuts and Jobs Act does not contain a provision permitting an entity, such as the Fund, to benefit from this deduction (since the Fund is taxed as a “C” corporation) or pass the special character of this income through to its shareholders. Qualified publicly traded partnership income allocated to a noncorporate investor investing directly in an MLP might, however, be eligible for the deduction.

The above discussion concerning the taxability of Fund dividends and distributions and of redemptions and exchanges of Fund shares is inapplicable to investors holding shares through a tax-advantaged arrangement, such as Retirement and Benefit Plans or 529 college savings plans. Such investors should refer to the applicable account documents/program description for that arrangement for more information regarding the tax consequences of holding and redeeming Fund shares.

This discussion of “Taxes” is for general information only and not tax advice. All investors should consult their own tax advisers as to the federal, state, local and foreign tax provisions applicable to them.

Federal Income Taxes (applicable to Invesco Oppenheimer Master Loan Fund, Invesco Oppenheimer Master Inflation Protected Securities Fund and Invesco Oppenheimer Master Event-Linked Bond Fund only)

United States taxes

The Fund is classified as a partnership and will not be a regulated investment company for US federal income tax purposes. As a partnership, the Fund is not a taxable entity for federal income tax purposes and, subject

to the application of the partnership audit rules described below, incurs no federal income tax liability. Each Investor is required to take into account its proportionate share of items of income, gain, loss and deduction of the partnership in computing its federal income tax liability regardless of whether or not cash or property distributions are then made by the Fund. Following the close of the Fund’s taxable year end, Investors will receive a tax statement entitled Schedule K-1 Partner’s Share of Income, Deductions, Credits, etc., which reports the tax status of their distributive share of the Fund’s items for the previous year.

Taxation of distributions, sales and exchanges

In general, distributions of money by the Fund to an Investor will represent a non-taxable return of capital up to the amount of an Investor’s adjusted tax basis in its shares. An Investor will recognize gain to the extent that any money distributed by the Fund exceeds the Investor’s adjusted tax basis in its shares. In the case of a non-taxable return of capital by the Fund to an Investor, other than in liquidation of the Investor’s interest in the Fund, the tax basis of his shares will be reduced (but not below zero) and will result in an increase in the amount of gain (or decrease in the amount of loss) that will be recognized by the Investor on the later sale of its shares. A distribution in partial or complete redemption of your shares in the Fund is taxable as a sale or exchange only to the extent the amount of money received exceeds the tax basis of your entire interest in the Fund. Any loss may be recognized only if you redeem your entire interest in the Fund for money.

When you sell shares of the Fund, you may have a capital gain or loss.

Derivatives

The use of derivatives by the Fund may cause the Fund to realize higher amounts of ordinary income or short-term capital gain, allocations of which are taxable to individual Investors at ordinary income tax rates rather than at the more favorable tax rates for long-term capital gain. Changes in government regulation of derivative instruments could affect the character, timing and amount of the Fund’s taxable income or gains, and may limit the Fund from using certain types of derivative instruments as part of its investment strategy.

Risk of audit of the Fund

Under the new partnership audit rules, which are generally applicable to tax years beginning after December 31, 2017, the Internal Revenue Service (“IRS”) may collect any taxes resulting from audit adjustments to the Fund’s income tax returns (including any applicable penalties and interest) directly from the Fund. In that case, current Investors would bear some or all of the tax liability resulting from such audit adjustment, even if they did not own interests in the Fund during the tax year under audit. The Fund may have the ability to shift any such tax liability to the Investors in accordance with their interests in the Fund during the year under audit, but there can be no assurance that the Fund will be able to do so under all circumstances. For taxable years not subject to the new audit rules, items of Fund income, gain, loss, deduction and credit will be determined at the Fund level in a unified audit. NO REPRESENTATION OR WARRANTY OF ANY KIND IS MADE WITH RESPECT TO THE TAXATION, DEDUCTIBILITY OR CAPITALIZATION OF ANY ITEM BY THE FUND OR INVESTOR. In addition, the “partnership representative” (tax matters partner, for taxable years before the partnership audit rules become effective) will have the sole authority to act on the Fund’s behalf for purposes of, among other things, federal income tax audits and judicial review of administrative adjustments by the IRS, and any such actions will be binding on the Fund and all of the Investors.

Unrelated business taxable income

An allocable share of a tax-exempt Investor’s income will be “unrelated business taxable income” (“UBTI”) to the extent that the Fund borrows money to acquire property or invests in assets that produce UBTI.

Medicare tax

An additional 3.8% Medicare tax is imposed on certain net investment income of US individuals, estates and trusts to the extent that such person’s “modified adjusted gross income” (in the case of an individual) or “adjusted gross income” (in the case of an estate or trust) exceeds a threshold amount. “Net investment income,” for these purposes, means investment income (including (i) net gains from the taxable disposition of shares of a Fund to the extent the net gain would be taken into account by the Investor if the Fund sold all of its property for fair market value immediately before the disposition of the shares of the Fund, and (ii) an allocable share of a Fund’s interest, dividends and net gains) reduced by the deductions properly allocable to such income. This Medicare tax, if applicable, is reported by Investors on, and paid with, the Investor’s federal income tax return.

State, local and non-US tax matters

An Investor’s distributive share of the Fund’s income, and gains from the sale or exchange of an Investor’s Fund shares, generally are subject to state and local taxes in the jurisdiction in which the Investor resides or is otherwise subject to tax.

Prospective investors should consider their individual state and local tax consequences of an investment in the Fund.

Tax considerations for non-US investors

If, as anticipated, the Fund is not deemed to be engaged in a US trade or business, the Fund generally will be required to withhold tax on the distributive share of certain items of gross income from US sources allocated to non-US Investors at a 30% (or lower treaty) rate. Certain categories of income, including portfolio interest, are not subject to US withholding tax. Capital gains (other than gain realized on disposition of US real property interests) are not subject to US withholding tax unless the non-US Investor is a nonresident alien individual present in the United States for a period or periods aggregating 183 days or more during the taxable year. If, on the other hand, the Fund derives income which is effectively connected with a US trade or business carried on by the Fund, this 30% tax will not apply to such effectively connected income of the Fund, and the Fund generally will be required to withhold tax from the amount of effectively connected income allocable to non-US Investors at the highest rate of tax applicable to US residents, and non-US Investors generally would be required to file US income tax returns and be subject to US income tax on a net basis. Gain or loss on a sale of shares will be treated as effectively connected with a U.S. trade or business to the extent that a foreign corporation or foreign individual that owns the shares (whether directly or indirectly through other partnerships) would have had effectively connected gain or loss had the partnership sold its underlying assets and applicable US withholding tax will apply. Non-US Investors may be subject to US estate tax and are subject to special US tax certification requirements.

Other reporting and withholding requirements

Under the Foreign Account Tax Compliance Act (“FATCA”), the Fund will be required to withhold at a 30% rate on certain US source payments (such as interest, and dividends) to certain Investors if the Investor fails to provide the Fund with the information which identifies its direct and indirect US ownership. After December 31, 2018, FATCA withholding also would have applied to certain capital gain distributions, return of capital distributions and the proceeds arising from the sale of Fund shares; however, based on proposed regulations issued by the IRS, which can be relied upon currently, such withholding is no longer required unless final regulations provide otherwise (which is not expected). A Fund may disclose the information that it receives from an Investor to the IRS, non-US taxing authorities or other parties as necessary to comply with FATCA or similar laws. Withholding also may be required if a foreign entity that is an Investor fails to provide the Fund with appropriate certifications or other documentation concerning its status under FATCA.

For a more complete discussion of the federal income tax consequences of investing in the Fund, see the Statement of Additional Information.

This discussion of “Federal Income Taxes” is not intended or written to be used as tax advice. Because everyone’s tax situation is unique, Investors should consult their tax professional about federal, state, local and foreign tax consequences before making an investment in the Fund.

Payments to Financial Intermediaries – All Share Classes except Class R6 shares

The financial adviser or intermediary through which you purchase your shares may receive all or a portion of the sales charges and distribution fees discussed above. In addition to those payments, Invesco Distributors and other Invesco Affiliates, may make additional cash payments to financial intermediaries in connection with the promotion and sale of shares of the Funds. These additional cash payments may include cash payments and other payments for certain marketing and support services. Invesco Affiliates make these payments from their own resources, from Invesco Distributors’ retention of initial sales charges and from payments to Invesco Distributors made by the Funds under their 12b-1 plans. In the context of this prospectus, “financial intermediaries” include any broker, dealer, bank (including bank trust departments), registered investment adviser, financial planner, retirement plan administrator, insurance company and any other financial intermediary having a selling, administration or similar agreement with Invesco Affiliates.

The benefits Invesco Affiliates receive when they make these payments include, among other things, placing the Funds on the financial intermediary’s fund sales system, and access (in some cases on a preferential basis over other competitors) to individual members of the financial intermediary’s sales force or to the financial intermediary’s management. These payments are sometimes referred to as “shelf space” payments because the payments compensate the financial intermediary for including the Funds in its fund sales system (on its “sales shelf”). Invesco Affiliates compensate financial intermediaries differently depending typically on the level and/or type of considerations provided by the financial intermediary. The payments Invesco Affiliates make may be calculated based on sales of shares of the Funds (Sales-Based Payments), in which case the total amount of such payments shall not exceed 0.25% (0.10% for Class R5 shares) of the public offering price of all shares sold by the financial intermediary during the particular period. Payments may also be calculated based on the average daily net assets of the applicable Funds attributable to that particular financial intermediary (Asset-Based Payments), in which case the total amount of such cash payments shall not exceed 0.25% per annum of those assets during a defined period. Sales-Based Payments primarily create incentives to make new sales of shares of the Funds and Asset-Based Payments primarily create incentives to retain previously sold shares of the Funds in investor accounts. Invesco Affiliates may pay a financial intermediary either or both Sales-Based Payments and Asset-Based Payments.

Invesco Affiliates are motivated to make these payments as they promote the sale of Fund shares and the retention of those investments by clients of the financial intermediaries. To the extent financial intermediaries sell more shares of the Funds or retain shares of the Funds in their clients’ accounts, Invesco Affiliates benefit from the incremental management and other fees paid to Invesco Affiliates by the Funds with respect to those assets.

The Funds’ transfer agent may make payments to certain financial intermediaries for certain administrative services, including record keeping and sub-accounting of shareholder accounts pursuant to a sub-transfer agency, omnibus account service or sub-accounting agreement. All fees payable by Invesco Affiliates under this category of services are charged back to the Funds, subject to certain limitations approved by the Board.

You can find further details in the Fund’s SAI about these payments and the services provided by financial intermediaries. In certain cases these payments could be significant to the financial intermediaries. Your financial adviser may charge you additional fees or commissions other than those

disclosed in this prospectus. You can ask your financial adviser about any payments it receives from Invesco Affiliates or the Funds, as well as about fees and/or commissions it charges.

Important Notice Regarding Delivery of Security Holder Documents

To reduce Fund expenses, only one copy of most shareholder documents may be mailed to shareholders with multiple accounts at the same address (Householding). Mailing of your shareholder documents may be householded indefinitely unless you instruct us otherwise. If you do not want the mailing of these documents to be combined with those for other members of your household, please contact the Funds’ transfer agent at 800-959-4246 or contact your financial institution. The Funds’ transfer agent will begin sending you individual copies for each account within thirty days after receiving your request.

A-23                                  The Invesco Funds

Obtaining Additional Information

By Mail:	Invesco Investment Services, Inc. P.O. Box 219286 Kansas City, MO 64121-9286
By Telephone:	(800) 959-4246
On the Internet:	You can send us a request by e-mail or download prospectuses, SAIs, annual or semi-annual reports via our website: www.invesco.com/us

Prospectus

December 20, 2019

Table of Contents

Fund Summaries

Invesco Premier Portfolio

interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the Fund's foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulty in enforcing obligations, decreased liquidity or increased volatility. Foreign investments also involve the risk of the possible seizure, nationalization or expropriation of the issuer or foreign deposits (in which the Fund could lose its entire investments in a certain market) and the possible adoption of foreign governmental restrictions such as exchange controls.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. The Fund may impose a fee upon the sale of your shares or may temporarily suspend your ability to sell shares if the Fund’s liquidity falls below required minimums because of market conditions or other factors. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund or maintain the Fund’s $1.00 share price at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments

that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. The Fund is subject to the risk that the counterparty may default on its obligation to repurchase the underlying instruments collateralizing the repurchase agreement, which may cause the Fund to lose money. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, which could result in a loss.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's website at www.invesco.com/us.

Investments in the Fund are limited to accounts beneficially owned by natural persons. You may purchase or redeem shares of the Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link^SM.

The minimum investments for Institutional Class shares for fund accounts are as follows:

Initial Investments Per Fund Account*	$ 1,000
...
Additional Investments Per Fund Account	No minimum
...

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions generally are taxable to you as ordinary income, unless you are investing through a tax-advantaged arrangement, such as a 401(k) plan or individual retirement account. Any distributions from a 401(k) plan or individual retirement account may be taxed when withdrawn from such plan or account.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund, the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s website for more information.

Invesco Premier Tax-Exempt Portfolio

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

	1 Year	3 Years	5 Years	10 Years
Institutional Class	$20	$75	$136	$313
...

Principal Investment Strategies of the Fund

The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in securities that (1) pay interest that is excluded from gross income for federal income tax purposes, and (2) do not produce income that will be considered to be an item of preference for purposes of the alternative minimum tax. While the Fund’s distributions are primarily exempt from federal income tax, a portion of the Fund’s distributions may be subject to the federal alternative minimum tax and state and local taxes.

In complying with the 80% investment requirement, the Fund may include other instruments that have economic characteristics similar to the Fund’s direct investments that are counted toward the 80% investment requirement.

The Fund may invest up to 20% of its net assets in money market instruments that may be subject to federal taxes, including Treasury securities, repurchase agreements, commercial paper, and U.S. dollar-denominated foreign securities.

The Fund invests only in high-quality U.S. dollar-denominated short-term debt obligations, including: (i) municipal securities; (ii) tax-exempt commercial paper; and (iii) cash equivalents. These securities may have credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. Municipal securities include debt obligations of states, territories and possessions of the United States and the District of Columbia, their political subdivisions, agencies, instrumentalities, authorities thereof, and multi-state agencies, issued to obtain funds for various public purposes. Municipal lease obligations, synthetic municipal securities (which include tender option bonds and variable rate instruments which are created when fixed rate bonds are coupled with a third party demand feature) and certain types of industrial revenue bonds are treated as municipal securities.

Other securities held by the Fund may be structured with demand features which have the effect of shortening the security’s maturity.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a money market fund that rounds the Fund’s current net asset value (NAV) per share to a minimum of the fourth decimal place. Although the Fund is a money market fund, the NAV of the Fund’s shares “floats,” fluctuating with changes in the values of the Fund’s portfolio securities. The Fund invests in conformity with U.S. Securities and Exchange Commission (SEC) rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 calendar days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 calendar days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 under the Investment Company Act of 1940, as amended (Rule 2a-7), of no more than 120 calendar days. Each investment must be determined to present minimal credit risks by Invesco Advisers, Inc.(Invesco or the Adviser) pursuant to guidelines approved by the Fund’s Board of Trustees (the Board), and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund’s investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

You could lose money by investing in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Alternative Minimum Tax Risk. A portion of the Fund’s otherwise tax-exempt income may be taxable to those shareholders subject to the federal alternative minimum tax.

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly), the supply of short-term financing, changes in government regulation, changes in interest rates, and economic downturns in the United States and abroad.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the Fund's foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulty in enforcing obligations, decreased liquidity or increased volatility. Foreign investments also involve the risk of the possible seizure, nationalization or expropriation of the issuer or foreign deposits (in which the Fund could lose its entire investments in a certain market) and the possible adoption of foreign governmental restrictions such as exchange controls.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Because the share price of the Fund will fluctuate, when you sell your shares they may be worth more or less than what you originally paid for them and you may lose money by investing in the Fund. The Fund may impose a fee upon the sale of your shares or may temporarily suspend your ability to sell shares if the Fund’s liquidity falls below required minimums because of market conditions or other factors. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. The Fund is subject to the risk that the counterparty may default on its obligation to repurchase the underlying instruments collateralizing the repurchase agreement, which may cause the Fund to lose money. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

Risk of Large Shareholder Redemptions. One or more shareholders hold or control a significant percentage of the Fund’s shares. Redemptions by such shareholder(s) may force the Fund to sell a significant portion of its holdings.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, which could result in a loss.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past

performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's website at www.invesco.com/us.

You may purchase or redeem shares of the Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link^SM.

The minimum investments for Institutional Class shares fund accounts are as follows:

Initial Investments Per Fund Account*	$1,000
...
Additional Investments Per Fund Account	No minimum
...

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions primarily are exempt from regular federal income tax. A portion of these distributions, however, may be subject to the federal alternative minimum tax and state and local taxes. The Fund may also make distributions that are taxable to you as ordinary income.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund, the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s website for more information.

Invesco Premier U.S. Government Money Portfolio

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees (fees paid directly from your investment)
Class:	Institutional
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	None
...
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, whichever is less)	None
...

    

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Class:	Institutional
Management Fees	0.25%
...
Distribution and/or Service (12b-1) Fees	None
...
Other Expenses	None
...
Total Annual Fund Operating Expenses	0.25
...
Fee Waiver and/or Expense Reimbursement1	0.07
...
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	0.18
...

1

Invesco Advisers, Inc. (Invesco or the Adviser) has contractually agreed to waive advisory fees equal to 0.07% of the average daily net assets of Invesco Premier U.S. Government Money Portfolio. Unless Invesco continues the fee waiver agreement, it will terminate on December 31, 2020. During its term, the fee waiver agreement cannot be terminated or amended to reduce the advisory fee waiver without approval of the Board of Trustees.

Example. This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain equal to the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in the first year and the Total Annual Fund Operating Expenses thereafter.

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

	1 Year	3 Years	5 Years	10 Years
Institutional Class	$18	$73	$134	$311
...

Principal Investment Strategies of the Fund

The Fund invests at least 99.5% of its total assets in cash, Government Securities, and repurchase agreements collateralized by cash or Government Securities. In addition, at least 80% of the Fund’s net assets (plus any borrowings for investment purposes) will be invested, under normal circumstances, in (i) direct obligations of the U.S. Treasury, (ii) other securities issued or guaranteed as to principal and interest by the U.S. Government or its agencies and instrumentalities (agency securities) and (iii) repurchase agreements secured by those obligations referenced in (i) and (ii) above. In contrast to the Fund’s 99.5% policy, the Fund’s 80% policy does not include cash or repurchase agreements collateralized by cash. Government Security generally means any security issued or guaranteed as to principal or interest by the U.S. Government or certain of its agencies or instrumentalities; or any certificate of deposit for any of the foregoing.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a Government Money Market Fund as defined by Rule 2a-7 under the Investment Company Act of 1940, as amended (Rule 2a-7), that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with U.S. Securities and Exchange Commission (SEC) rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of

investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 calendar days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 calendar days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 calendar days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Fund’s Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

Principal Risks of Investing in the Fund

You could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the

sponsor will enter into support agreements or take other actions to provide financial support to the Fund or maintain the Fund’s $1.00 share price at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility. While the Board of Trustees may implement procedures to impose a fee upon the sale of your shares or temporarily suspend your ability to sell shares in the future if the Fund’s liquidity falls below required minimums because of market conditions or other factors, the Board has not elected to do so at this time. Should the Board elect to do so, such change would only become effective after shareholders were provided with specific advance notice of the change in the Fund’s policy and provided with the opportunity to redeem their shares in accordance with Rule 2a-7 before the policy change became effective.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's website at www.invesco.com/us.

You may purchase or redeem shares of the Fund on any business day the Fund is open through your financial intermediary, by telephone at (800) 659-1005, or through Liquidity Link^SM.

The minimum investments for Institutional Class shares fund accounts are as follows:

Initial Investments Per Fund Account*	$1,000
...
Additional Investments Per Fund Account	No minimum
...

*	An intermediary may aggregate its master accounts and subaccounts to satisfy the minimum investment requirement.

Tax Information

The Fund’s distributions generally are taxable to you as ordinary income, unless you are investing through a tax-advantaged arrangement, such as a 401(k) plan or individual retirement account. Any distributions from a 401(k) plan or individual retirement account may be taxed when withdrawn from such plan or account.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund, the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s website for more information.

maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 calendar days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund’s investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly). Financial services companies may be dependent on the supply of short-term financing. The value of bank instruments and securities of issuers in the banking and financial services industry, or guaranteed by such issuers, can be affected by and sensitive to changes in government regulation and interest rates and to economic downturns in the United States and abroad. The risk of holding bank instruments is also directly tied to the risk of insolvency or bankruptcy of the issuing banks, which risk may be higher for larger or more complex financial institutions that combine traditional, commercial and investment banking.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to

repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the value of the Fund’s foreign investments may be adversely affected by political and social instability in their home countries, by changes in economic or taxation policies in those countries, or by the difficulty in enforcing obligations in those countries. Foreign companies generally may be subject to less stringent regulations than U.S. companies, including financial reporting requirements and auditing and accounting controls. As a result, there generally is less publicly available information about foreign companies than about U.S. companies. Trading in many foreign securities may be less liquid and more volatile than U.S. securities due to the size of the market or other factors.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the Adviser in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. The Fund may impose a fee upon the sale of your shares or may temporarily suspend your ability to sell shares if the Fund’s liquidity falls below required minimums because of market conditions or other factors. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund or maintain the Fund’s $1.00 share price at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively

affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Municipal obligations may be more susceptible to downgrades or defaults during recessions or similar periods of economic stress. Municipal securities structured as revenue bonds are generally not backed by the taxing power of the issuing municipality but rather the revenue from the particular project or entity for which the bonds were issued. If the Internal Revenue Service determines that an issuer of a municipal security has not complied with applicable tax requirements, interest from the security could be treated as taxable, which could result in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Invesco Premier Tax-Exempt Portfolio

Objective(s) and Strategies

The Fund’s investment objective is to provide tax-exempt income consistent with preservation of capital and liquidity. The Fund’s investment objective may be changed by the Board without shareholder approval.

The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in securities that (1) pay interest that is excluded from gross income for federal income tax purposes, and (2) do not produce income that will be considered to be an item of preference for purposes of the alternative minimum tax. While the Fund’s distributions are primarily exempt from federal income tax, a portion of the Fund’s distributions may be subject to the federal alternative minimum tax and state and local taxes.

In complying with the 80% investment requirement, the Fund may include other instruments that have economic characteristics similar to the Fund’s direct investments that are counted toward the 80% investment requirement.

The Fund may invest up to 20% of its net assets in money market instruments that may be subject to federal taxes, including Treasury securities, repurchase agreements, commercial paper, and U.S. dollar-denominated foreign securities.

The Fund invests only in high-quality U.S. dollar-denominated short-term debt obligations, including: (i) municipal securities; (ii) tax-exempt commercial paper; and (iii) cash equivalents. These securities may have credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. Municipal securities include debt obligations of states, territories and possessions of the United States and the District of Columbia, their political subdivisions, agencies, instrumentalities, authorities thereof, and multi-state agencies, issued to obtain funds for various public purposes. Municipal lease obligations, synthetic municipal securities and certain types of industrial revenue bonds are treated as municipal securities. Synthetic municipal securities (which include tender option bonds and variable rate instruments, which are created when fixed rate bonds are coupled with a third party demand feature) and certain types of industrial revenue bonds are treated as municipal securities.

Other securities held by the Fund may be structured with demand features which have the effect of shortening the security’s maturity.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a money market fund that rounds the Fund’s current NAV per share to a minimum of the fourth decimal place. Although the Fund is a money market fund, the NAV of the Fund’s shares “floats,” fluctuating with changes in the values of the Fund’s portfolio securities. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 calendar days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 calendar days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 calendar days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

The Fund may invest in U.S. dollar-denominated foreign securities. Some of the Fund’s investments, although U.S. dollar-denominated, may be subject to foreign credit exposure.

The Fund may also invest in daily and weekly variable-rate demand notes.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Alternative Minimum Tax Risk. Although the interest received from municipal securities generally is exempt from federal income tax, the Fund may invest a portion of its total assets in municipal securities subject to the federal alternative minimum tax. Accordingly, investment in the Fund could cause shareholders to be subject to, or result in an increased liability under, the federal alternative minimum tax.

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly). Financial services companies may be dependent on the supply of short-term financing. The value of bank instruments and securities of issuers in the banking and financial services industry, or guaranteed by such issuers, can be affected by and sensitive to changes in government regulation and interest rates and to economic downturns in the United States and abroad. The risk of holding bank instruments is also directly tied to the risk of insolvency or bankruptcy of the issuing banks, which risk may be higher for larger or more complex financial institutions that combine traditional, commercial and investment banking.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the value of the Fund’s foreign investments may be adversely affected by political and social instability in their home countries, by changes in economic or taxation policies in those countries, or by the difficulty in enforcing obligations in those countries. Foreign companies generally may be subject to less stringent regulations than U.S. companies, including financial reporting requirements and auditing and accounting controls. As a result, there generally is less publicly available information about foreign companies than about U.S. companies. Trading in many foreign securities may be less liquid and more volatile than U.S. securities due to the size of the market or other factors.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will

produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the Adviser in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Because the share price of the Fund will fluctuate, when you sell your shares they may be worth more or less than what you originally paid for them and you may lose money by investing in the Fund. The Fund may impose a fee upon the sale of your shares or may temporarily suspend your ability to sell shares if the Fund’s liquidity falls below required minimums because of market conditions or other factors. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Municipal obligations may be more susceptible to downgrades or defaults during recessions or similar periods of economic stress. Municipal securities structured as revenue bonds are generally not backed by the taxing power of the issuing municipality but rather the revenue from the particular project or entity for which the bonds were issued. If the Internal Revenue Service determines that an issuer of a municipal security has not complied with applicable tax requirements, interest from the security could be treated as taxable, which could result in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

Risk of Large Shareholder Redemptions. One or more shareholders hold or control a significant percentage of the Fund’s shares. Redemptions by such shareholder(s) may force the Fund to sell a significant portion of its holdings.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Invesco Premier U.S. Government Money Portfolio

Objective(s) and Strategies

The Fund’s investment objective is a high level of current income consistent with the preservation of capital and the maintenance of liquidity.

The Fund invests at least 99.5% of its total assets (plus any borrowings for investment purposes) in cash, Government Securities, and repurchase agreements collateralized by cash or Government Securities. In addition, at least 80% of the Fund’s net assets (plus any borrowings for investment purposes) will be invested, under normal circumstances, in (i) direct obligations of the U.S. Treasury, (ii) other securities issued or guaranteed as to principal and interest by the U.S. Government or its agencies and instrumentalities (agency securities) and (iii) repurchase agreements secured by those obligations referenced in (i) and (ii) above. In contrast to the Fund’s 99.5% policy, the Fund’s 80% policy does not include cash or repurchase agreements collateralized by cash. Government Security generally means any security issued or guaranteed as to principal or interest by the U.S. Government or certain of its agencies or instrumentalities; or any certificate of deposit for any of the foregoing.

The Fund will limit investments to those securities that are Eligible Securities as defined by applicable regulations at the time of purchase.

The Fund is a Government Money Market Fund as defined by Rule 2a-7. As permitted by Rule 2a-7, the Fund seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 calendar days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 calendar days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 calendar days. Each investment must be determined to present minimal credit risks by the Adviser pursuant to guidelines approved by the Board, and must be an Eligible Security.

In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse

market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the Adviser in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. The Fund’s sponsor has no legal obligation to provide

financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund or maintain the Fund’s $1.00 share price at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility. While the Board of Trustees may implement procedures to impose a fee upon the sale of your shares or temporarily suspend your ability to sell shares in the future if the Fund’s liquidity falls below required minimums because of market conditions or other factors, the Board has not elected to do so at this time. Should the Board elect to do so, such change would only become effective after shareholders were provided with specific advance notice of the change in the Fund’s policy and provided with the opportunity to redeem their shares in accordance with Rule 2a-7 before the policy change became effective.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Portfolio Holdings

Information concerning the Funds' portfolio holdings as well as their dollar-weighted average portfolio maturity and dollar-weighted average life to maturity as of the last business day or subsequent calendar day of the preceding month will be posted on their website no later than five business days after the end of the month and remain posted on the website for six months thereafter.

A description of Fund policies and procedures with respect to the disclosure of Fund portfolio holdings is available in the SAI, which is available to Qualified Persons at www.invesco.com/us.

Adviser Compensation

During the fiscal year ended August 31, 2019, the Adviser received compensation of 0.18% of Invesco Premier Portfolio's average daily net assets, after fee waiver and/or expense reimbursement, if any.

During the fiscal year ended August 31, 2019, the Adviser received compensation of 0.20% of Invesco Premier Tax-Exempt Portfolio's average daily net assets, after fee waiver and/or expense reimbursement, if any.

During the fiscal year ended August 31, 2019, the Adviser received compensation of 0.18% of Invesco Premier U.S. Government Money Portfolio's average daily net assets, after fee waiver and/or expense reimbursement, if any.

The Adviser is responsible for all of the Funds' expenses, other than (i) interest, taxes and extraordinary items such as litigation costs; (ii) brokers’ commissions, issue and transfer taxes, and other costs chargeable to the Fund in connection with securities transactions to which the Fund is a party or in connection with securities owned by the Fund and (iii) other expenditures which are capitalized in accordance with generally accepted accounting principles applicable to investment companies.

The Adviser, Invesco Distributors, or one of their affiliates may, from time to time, at their expense out of their own financial resources make cash payments to financial intermediaries for marketing support and/or administrative support. These marketing support payments and administrative support payments are in addition to the payments by the Funds described in this prospectus. Because they are not paid by the Funds, these marketing support payments and administrative support payments will not change the price paid by investors for the purchase of the Funds’ shares or the amount that a Fund will receive as proceeds from such sales. In certain cases these cash payments could be significant to the financial intermediaries. These cash payments may also create an incentive for a financial intermediary to recommend or sell shares of the Funds to its customers. Please contact your financial intermediary for details about any payments they or their firm may receive in connection with the sale of shares of the Funds or the provision of services to the Funds. Also, please see the Funds’ SAI for more information about these types of payments.

A discussion regarding the basis for the Board’s approval of the investment advisory agreement and investment sub-advisory agreements of each Fund is available in each Fund’s most recent annual report to shareholders for the twelve-month period ended August 31.

Other Information

    

time. Generally, shareholders whose purchase orders have been accepted by Invesco Premier Portfolio or Invesco Premier U.S. Government Money Portfolio prior to 5:30 p.m. Eastern Time and by Invesco Premier Tax-Exempt Portfolio prior to 3:00 p.m. Eastern Time, or an earlier close time on any day that a Fund closes early, are eligible to receive dividends on that business day. The dividend declared on any day preceding a non-business day or days of a Fund will include the net income accrued on such non-business day or days. Dividends and distributions are reinvested in the form of additional full and fractional shares at net asset value unless the shareholder has elected to have such dividends and distributions paid in cash. See “Pricing of Shares-Timing of Orders” for a description of the Funds’ business days.

Capital Gains Distributions

Invesco Premier Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

Invesco Premier Tax-Exempt Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

Invesco Premier U.S. Government Money Portfolio generally distributes net realized capital gains (including net short-term capital gains), if any, at least annually. The Fund does not expect to realize any long-term capital gains and losses.

Institutional Class

	Net asset value, beginning of period	Net investment income(a)	Net gains (losses) on securities (both realized and unrealized)	Total from investment operations	Dividends from net investment income	Net asset value, end of period	Total return(b)	Net assets, end of period (000's omitted)	Ratio of expenses to average net assets with fee waivers and/or expense reimbursements	Ratio of expenses to average net assets without fee waivers and/or expense reimbursements	Ratio of net investment income to average net assets
Invesco Premier Portfolio
Year ended 08/31/19	$ 1.00	$ 0.02	$ 0.00	$ 0.02	$ (0.02)	$ 1.00	2.37%	$1,667,185	0.18% (c)	0.25% (c)	2.37% (c)
Year ended 08/31/18	1.00	0.02	0.00	0.02	(0.02)	1.00	1.60	957,754	0.18	0.25	1.63
Year ended 08/31/17	1.00	0.01	0.00	0.01	(0.01)	1.00	0.84	683,734	0.18	0.25	0.63
Year ended 08/31/16	1.00	0.00	0.00	0.00	(0.00)	1.00	0.30	6,342,444	0.18	0.25	0.30
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	1.00	0.04	6,704,767	0.18	0.25	0.04
...
Invesco Premier U.S. Government Money Portfolio
Year ended 08/31/19	1.00	0.02	0.00	0.02	(0.02)	1.00	2.21	8,305,644	0.18 (c)	0.25 (c)	2.21 (c)
Year ended 08/31/18	1.00	0.01	0.00	0.01	(0.01)	1.00	1.36	6,919,466	0.18	0.25	1.36
Year ended 08/31/17	1.00	0.01	(0.00)	0.01	(0.01)	1.00	0.53	5,730,975	0.18	0.25	0.54
Year ended 08/31/16	1.00	0.00	0.00	0.00	(0.00)	1.00	0.17	2,551,750	0.17	0.25	0.18
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	1.00	0.02	1,397,561	0.09	0.25	0.02
...
Invesco Premier Tax-Exempt Portfolio
Year ended 08/31/19	1.0000	0.0146	0.0000	0.0146	(0.0146)	1.0000	1.47	97,605	0.20 (c)	0.25 (c)	1.46 (c)
Year ended 08/31/18	1.0000	0.0106	(0.0001)	0.0105	(0.0105)	1.0000	1.05	77,520	0.20	0.25	1.06
Year ended 08/31/17	1.00	0.0058	0.0000	0.0058	(0.0058)	1.0000	0.59	57,297	0.20	0.25	0.56
Year ended 08/31/16	1.00	0.00	0.00	0.00	(0.00)	1.00	0.10	129,818	0.15	0.25	0.10
Year ended 08/31/15	1.00	0.00	0.00	0.00	(0.00)	1.00	0.01	115,021	0.06	0.25	0.03
...

13                                  Invesco Treasurer's Series Trust

Hypothetical Investment and Expense Information

    

In connection with the final settlement reached between Invesco and certain of its affiliates with certain regulators, including the New York Attorney General’s Office, the SEC and the Colorado Attorney General’s Office (the settlement) arising out of certain market timing and unfair pricing allegations made against Invesco and certain of its affiliates, Invesco and certain of its affiliates agreed, among other things, to disclose certain hypothetical information regarding investment and expense information to Fund shareholders. The chart below is intended to reflect the annual and cumulative impact of the Fund’s expenses, including investment advisory

fees and other Fund costs, on the Fund’s returns over a 10-year period. The example reflects the following:

■	You invest $10,000 in the Fund and hold it for the entire 10-year period;
■	Your investment has a 5% return before expenses each year; and
■	The Funds’ current annual expense ratios include any applicable contractual fee waiver or expense reimbursement for the period committed.

There is no assurance that the annual expense ratio will be the expense ratio for the Funds’ classes for any of the years shown. This is only a hypothetical presentation made to illustrate what expenses and returns would be under the above scenarios; your actual returns and expenses are likely to differ (higher or lower) from those shown below.

Invesco Premier Portfolio — Institutional Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio1	0.18%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.82%	9.80%	15.01%	20.48%	26.20%	32.19%	38.47%	45.05%	51.94%	59.16%
End of Year Balance	$10,482.00	$10,979.90	$11,501.44	$12,047.76	$12,620.03	$13,219.48	$13,847.40	$14,505.16	$15,194.15	$15,915.87
Estimated Annual Expenses	$ 18.43	$ 26.83	$ 28.10	$ 29.44	$ 30.83	$ 32.30	$ 33.83	$ 35.44	$ 37.12	$ 38.89
...

    

Invesco Premier Tax-Exempt Portfolio — Institutional Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio1	0.20%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.80%	9.78%	14.99%	20.45%	26.18%	32.17%	38.45%	45.02%	51.91%	59.13%
End of Year Balance	$10,480.00	$10,977.80	$11,499.25	$12,045.46	$12,617.62	$13,216.96	$13,844.76	$14,502.39	$15,191.25	$15,912.84
Estimated Annual Expenses	$ 20.48	$ 26.82	$ 28.10	$ 29.43	$ 30.83	$ 32.29	$ 33.83	$ 35.43	$ 37.12	$ 38.88
...

    

Invesco Premier U.S. Government Money Portfolio — Institutional Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio1	0.18%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.82%	9.80%	15.01%	20.48%	26.20%	32.19%	38.47%	45.05%	51.94%	59.16%
End of Year Balance	$10,482.00	$10,979.90	$11,501.44	$12,047.76	$12,620.03	$13,219.48	$13,847.40	$14,505.16	$15,194.15	$15,915.87
Estimated Annual Expenses	$ 18.43	$ 26.83	$ 28.10	$ 29.44	$ 30.83	$ 32.30	$ 33.83	$ 35.44	$ 37.12	$ 38.89
...

14                                  Invesco Treasurer's Series Trust

Purchasing Shares

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Minimum Investments Per Fund Account

The minimum investments for Institutional class accounts are as follows:

Fund	Initial Investments*	Additional Investments
Invesco Premier Portfolio	$1,000	No minimum
...
Invesco Premier Tax-Exempt Portfolio	$1,000	No minimum
...
Invesco Premier U.S. Government Money Portfolio	$1,000	No minimum
...

Purchase Options
	Opening An Account		Adding To An Account
By Liquidity Link	Open your account as described above.	Complete a Liquidity Link Agreement. Mail the application and agreement to the Funds’ transfer agent. Once your request for this option has been processed, you may place your order via Liquidity Link.
...

Automatic Dividend and Distribution Investment

All of your dividends and distributions may be paid in cash or reinvested in the same Fund at net asset value. Unless you specify otherwise, your dividends and distributions will automatically be reinvested in the same Fund in the form of full and fractional shares at net asset value.

Redeeming Shares

Redemption Fees

Your broker or financial intermediary may charge service fees for handling redemption transactions.

How to Redeem Shares

Invesco Premier Portfolio and Invesco Premier U.S. Government Portfolio
Through a Financial Intermediary	If placing a redemption request through your financial intermediary, redemption proceeds will be transmitted electronically to your pre-authorized bank account. The Funds’ transfer agent must receive your financial intermediary’s instructions before 5:30 p.m. Eastern Time on a business day in order to effect the redemption on that day. If the financial intermediary wishes to place a redemption order between 5:00 p.m. Eastern Time and 5:30 p.m. Eastern Time on a business day it must do so by telephone.
By Telephone	If placing a redemption request by telephone, you or any person authorized to make account transactions, must call the Funds’ transfer agent before 5:30 p.m. Eastern Time on a business day to effect the redemption transaction on that day.
By Liquidity Link	If placing a redemption request through Liquidity Link, the Funds’ transfer agent must receive your redemption request before 5:00 p.m. Eastern Time on a business day to effect the transaction on that day.
...

    

Payment of Redemption Proceeds

All redemption orders are processed at the net asset value next determined after the Funds’ transfer agent receives a redemption request in good order. The Funds’ transfer agent will normally wire payment for redemptions received prior to 5:30 p.m. Eastern Time for Invesco Premier Portfolio and Invesco Premier U.S. Government Money Portfolio and prior to 3:00 p.m. Eastern Time for Invesco Premier Tax-Exempt Portfolio on the business day received, and in any event no more than seven days, after your redemption request is received in good order. However, depending on such factors as market liquidity and the size of the redemption, for a redemption request received by the Funds’ transfer agent between 5:00 p.m. Eastern Time and 5:30 p.m. Eastern Time for Invesco Premier Portfolio and Invesco Premier U.S. Government Money Portfolio and 3:00 p.m. Eastern Time for Invesco Premier Tax-Exempt Portfolio, proceeds may not be wired until the next business day. If the Funds’ transfer agent receives a redemption request on

a business day after 5:30 p.m. Eastern Time for Invesco Premier Portfolio and Invesco Premier U.S. Government Money Portfolio and after 3:00 p.m. Eastern Time for Invesco Premier Tax-Exempt Portfolio, the redemption will be effected at the net asset value of each Fund determined on the next business day, and the Funds’ transfer agent will normally wire redemption proceeds on such next business day, and in any event no more than seven days, after your redemption request is received in good order.

If a Fund exercises its discretion to close early on a business day, as described in the “Pricing of Shares—Timing of Orders” section of this prospectus, the Fund may not provide same day settlement of redemption orders.

Dividends payable up to the date of redemption on redeemed shares will normally be paid or reinvested on the next dividend payment date. However, if all of the shares in your account were redeemed, from an individual account or from an aggregate account, you may request that the dividends payable up to the date of redemption accompany the proceeds of the redemption.

Redemptions by Telephone

If you redeem by telephone, the Funds’ transfer agent will transmit the amount of the redemption proceeds electronically to your pre-authorized bank account. The Funds’ transfer agent uses reasonable procedures to confirm that instructions communicated by telephone are genuine, and the Funds and the Funds’ transfer agent are not liable for telephone instructions that are reasonably believed to be genuine.

Redemptions by Liquidity Link

If you redeem via Liquidity Link, the Funds’ transfer agent will transmit your redemption proceeds electronically to your pre-authorized bank account. The Funds and the Funds’ transfer agent are not liable for Liquidity Link instructions that are not genuine.

Suspension of Redemptions

In the event that the Fund, at the end of a business day, has invested less than 10% of its total assets in weekly liquid assets or the Fund’s price per share as computed for the purpose of distribution, redemption and repurchase, rounded to the nearest 1%, has deviated from the stable price established by the Fund’s Board of Trustees (“Board”) or the Board, including a majority of trustees who are not interested persons as defined in the 1940 Act, determines that such a deviation is likely to occur, and the Board, including a majority of trustees who are not interested persons of the Fund, irrevocably has approved the liquidation of the Fund, the Fund’s Board has the authority to suspend redemptions of Fund shares.

Liquidity Fees and Redemption Gates

For Invesco Premier Portfolio and Invesco Premier Tax-Exempt Portfolio, if the Fund’s weekly liquid assets fall below 30% of its total assets, the Board, in its discretion, may impose liquidity fees of up to 2% of the value of the shares redeemed and/or suspend redemptions (redemption gates). In addition, if any such Fund’s weekly liquid assets falls below 10% of its total assets at the end of any business day, the Fund must impose a 1% liquidity fee on shareholder redemptions unless the Board determines that not doing so is in the best interests of the Fund.

Liquidity fees and redemption gates are most likely to be imposed, if at all, during times of extraordinary market stress. In the event that a liquidity fee or redemption gate is imposed, the Board expects that for the duration of its implementation and the day after which such gate or fee is terminated, the Fund would strike only one net asset value per day, at the Fund’s last scheduled net asset value calculation time.

The imposition and termination of a liquidity fee or redemption gate will be reported by a Fund to the SEC on Form N-CR. Such information will also be available on the Fund’s website. In addition, a Fund will communicate such action through a supplement to its registration statement and may further communicate such action through a press release or by other means. If a liquidity fee is applied by the Board, it will be charged on all redemption orders submitted after the effective time of the imposition of the fee by the Board. Liquidity fees would reduce the amount you receive upon redemption of your shares. In the event a Fund imposes a redemption gate,

the Fund or any financial intermediary on its behalf will not accept redemption requests until the Fund provides notice that the redemption gate has been terminated.

Redemption requests submitted while a redemption gate is imposed will be cancelled without further notice. If shareholders still wish to redeem their shares after a redemption gate has been lifted, they will need to submit a new redemption request.

Liquidity fees and redemption gates will generally be used to assist a Fund to help preserve its market–based NAV per share. It is possible that a liquidity fee will be returned to shareholders in the form of a distribution. The Board may, in its discretion, terminate a liquidity fee or redemption gate at any time if it believes such action to be in the best interest of a Fund. Also, liquidity fees and redemption gates will automatically terminate at the beginning of the next business day once a Fund’s weekly liquid assets reach at least 30% of its total assets. Redemption gates may only last up to 10 business days in any 90-day period. When a fee or a gate is in place, the Fund may elect not to permit the purchase of shares or to subject the purchase of shares to certain conditions, which may include affirmation of the purchaser’s knowledge that a fee or a gate is in effect. When a fee or a gate is in place, shareholders will not be permitted to exchange into or out of a Fund.

There is some degree of uncertainty with respect to the tax treatment of liquidity fees received by a Fund, and such tax treatment may be the subject to future IRS guidance. If a Fund receives liquidity fees, it will consider the appropriate tax treatment of such fees to the Fund at such time.

Financial intermediaries are required to promptly take the steps requested by the Funds or their designees to impose or help to implement a liquidity fee or redemption gate as requested from time to time, including the rejection of orders due to the imposition of a fee or gate or the prompt re-confirmation of orders following a notification regarding the implementation of a fee or gate. If a liquidity fee is imposed, these steps are expected to include the submission of separate, rather than combined, purchase and redemption orders from the time of the effectiveness of the liquidity fee or redemption gate and the submission of such order information to the Fund or its designee prior to the next calculation of a Fund’s net asset value. Unless otherwise agreed to between a Fund and financial intermediary, the Fund will withhold liquidity fees on behalf of financial intermediaries. With regard to such orders, a redemption request that a Fund determines in its sole discretion has been received in good order by the Fund or its designated agent prior to the imposition of a liquidity fee or redemption gate may be paid by the Fund despite the imposition of a redemption gate or without the deduction of a liquidity fee. If a liquidity fee is imposed during the day, an intermediary who receives both purchase and redemption orders from a single account holder is not required to net the purchase and redemption orders. However, the intermediary is permitted to apply the liquidity fee to the net amount of redemptions (even if the purchase order was received prior to the time the liquidity fee was imposed).

Where a Financial Intermediary serves as a Fund’s agent for the purpose of receiving orders, trades that are not transmitted to the Fund by the Financial Intermediary before the time required by the Fund or the transfer agent may, in the Fund’s discretion, be processed on an as-of basis, and any cost or loss to the Fund or transfer agent or their affiliates, from such transactions shall be borne exclusively by the Financial Intermediary.

Redemptions Initiated by the Funds

If a Fund determines that you have not provided a correct Social Security or other tax identification number on your account application, or the Fund is not able to verify your identity as required by law, the Fund may, at its discretion, redeem the account and distribute the proceeds to you.

In order to separate retail investors (natural persons) and non-retail investors, Invesco Premier Portfolio reserves the right to redeem shares in any account that the Fund cannot confirm to its satisfaction are beneficially owned by natural persons. The Fund will provide advance written notice of its intent to make any such involuntary redemptions. The Fund reserves the right to redeem shares in any account that they cannot confirm to their

satisfaction are beneficially owned by natural persons, after providing advance notice.

Neither a Fund nor its investment adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.

Rights Reserved by the Funds

Each Fund and its agent reserve the right at any time to:

■	reject or cancel all or any part of any purchase order;
■	modify any terms or conditions related to the purchase or redemption of shares of any Fund; or
■	suspend, change or withdraw all or any part of the offering made by this prospectus.

Exchange Policy

You may only exchange Institutional Class shares of Invesco Premier Portfolio, Invesco Premier Tax-Exempt Portfolio or Invesco Premier U.S. Government Money Portfolio for shares of other Funds in the Trust or for shares of other money market funds in Short-Term Investments Trust, but may not exchange Institutional Class shares of such Funds for retail shares of other Invesco Funds or Investor Class shares of Funds in the Trust.

Pricing of Shares

Determination of Net Asset Value

Invesco Premier Portfolio and Invesco Premier U.S. Government Money Portfolio

The price of each Fund’s shares is the Fund’s net asset value per share. The net asset value determination on a business day for each of Invesco Premier Portfolio and Invesco Premier U.S. Government Money Portfolio will generally occur at 5:30 p.m. Eastern Time.

If a Fund closes early on a business day, as described below under “Pricing of Shares—Timing of Orders”, the Fund will calculate its net asset value as of the time of such closing.

Each Fund values portfolio securities on the basis of amortized cost, which approximates market value. This method of valuation is designed to enable a Fund to price its shares at $1.00 per share. The Funds cannot guarantee their net asset value will always remain at $1.00 per share.

Invesco Premier Tax-Exempt Portfolio

The price of the Fund’s shares is the Fund’s net asset value per share. The Fund generally determines the net asset value of its shares on a business day at 3:00 p.m. Eastern Time.

If a Fund closes early on a business day, as described below under “Pricing of Shares—Timing of Orders”, the Fund will calculate its net asset value as of the time of such closing.

The Fund values its portfolio securities for which market quotations are readily available at market value, and calculates its net asset values to four decimals (e.g., $1.0000). Securities and other assets quoted in foreign currencies are valued in U.S. dollars based on the prevailing exchange rates on that day. The Funds value securities and assets for which market quotations are unavailable at their “fair value,” which is described below.

Even when market quotations are available, they may be stale or unreliable because the security is not traded frequently, trading on the security ceased before the close of the trading market or issuer specific events occurred after the security ceased trading or because of the passage of time between the close of the market on which the security trades and the close of the New York Stock Exchange (NYSE) and when the Fund calculates its net asset value. Issuer specific events may cause the last market quotation to be unreliable. Such events may include a merger or insolvency, events that affect a geographical area or an industry segment, such as political events or natural disasters, or market events, such as a significant movement in the U.S. market. Where the Adviser determines that the closing price of the security is stale or unreliable, the Adviser will value the security at its fair value.

Fair value is that amount that the owner might reasonably expect to receive for the security upon its current sale. A fair value price is an estimated price that requires consideration of all appropriate factors,

including indications of fair value available from pricing services. Fair value pricing involves judgment and a Fund that uses fair value methodologies may value securities higher or lower than another Fund using market quotations or its own fair value methodologies to price the same securities.

Investors who purchase or redeem Fund shares on days when the Fund is holding fair-valued securities may receive a greater or lesser number of shares, or higher or lower redemption proceeds, than they would have received if the Fund had not fair-valued the security or had used a different methodology.

The Board has delegated the daily determination of fair value prices to the Adviser’s valuation committee, which acts in accordance with Board approved policies. Fair value pricing methods and pricing services can change from time to time as approved by the Board.

The intended effect of applying fair value pricing is to compute an NAV that accurately reflects the value of a Fund’s portfolio at the time that the NAV is calculated. An additional intended effect is to discourage those seeking to take advantage of arbitrage opportunities resulting from “stale” prices and to mitigate the dilutive impact of any such arbitrage. However, the application of fair value pricing cannot eliminate the possibility that arbitrage opportunities will exist.

Specific types of securities are valued as follows:

Senior Secured Floating Rate Loans and Senior Secured Floating Rate Debt Securities. Senior secured floating rate loans and senior secured floating rate debt securities are fair valued using evaluated quotes provided by an independent pricing service. Evaluated quotes provided by the pricing service may reflect appropriate factors such as market quotes, ratings, tranche type, industry, company performance, spread, individual trading characteristics, institution-size trading in similar groups of securities and other market data.

Foreign Securities. If market quotations are available and reliable for foreign exchange traded equity securities, the securities will be valued at the market quotations. Because trading hours for certain foreign securities end before the close of the NYSE, closing market quotations may become unreliable. If between the time trading ends on a particular security and the close of the customary trading session on the NYSE events occur that are significant and may make the closing price unreliable, the Fund may fair value the security. If an issuer specific event has occurred that the Adviser determines, in its judgment, is likely to have affected the closing price of a foreign security, it will price the security at fair value. The Adviser also relies on a screening process from a pricing vendor to indicate the degree of certainty, based on historical data, that the closing price in the principal market where a foreign security trades is not the current market value as of the close of the NYSE. For foreign securities where the Adviser believes, at the approved degree of certainty, that the price is not reflective of current market value, the Adviser will use the indication of fair value from the pricing service to determine the fair value of the security. The pricing vendor, pricing methodology or degree of certainty may change from time to time. Fund securities primarily traded on foreign markets may trade on days that are not business days of the Fund. Because the net asset value of Fund shares is determined only on business days of the Fund, the value of the portfolio securities of a Fund that invests in foreign securities may change on days when you will not be able to purchase or redeem shares of the Fund.

Fixed Income Securities. Fixed income securities, such as government, corporate, asset-backed and municipal bonds, convertible securities, including high yield or junk bonds, and loans, normally are valued on the basis of prices provided by independent pricing services. Prices provided by the pricing services may be determined without exclusive reliance on quoted prices, and may reflect appropriate factors such as institution-size trading in similar groups of securities, developments related to special securities, dividend rate, maturity and other market data. Pricing services generally value fixed income securities assuming orderly transactions of institutional round lot size, but a Fund may hold or transact in the same securities in smaller, odd lot sizes.  Odd lots often trade at lower prices than institutional round lots. Prices received from pricing services are fair value prices. In addition, if the price provided by the pricing service and independent quoted prices are unreliable, the Adviser’s valuation committee will fair value the security using procedures approved by the Board.

Short-term Securities. The Funds value variable rate securities that have an unconditional demand or put feature exercisable within seven days or less at par, which reflects the market value of such securities.

Open-end Funds. If a Fund invests in other open-end funds, other than open-end funds that are exchange traded, the investing Fund will calculate its net asset value using the net asset value of the underlying fund in which it invests, and the prospectuses for such open-end funds explain the circumstances under which they will use fair value pricing and the effects of using fair value pricing.

Timing of Orders

Each Fund opens for business at 8:30 a.m. Eastern Time. Each Fund prices purchase and redemption orders on each business day at the net asset value calculated after the Funds’ transfer agent receives an order in good form.

A business day is any day that (1) both the Federal Reserve Bank of New York and the Fund’s custodian are open for business and (2) the primary trading markets for the Fund’s portfolio instruments are open and the Fund’s management believes there is an adequate market to meet purchase and redemption requests. Each Fund is authorized not to open for trading on a day that is otherwise a business day if the Securities Industry and Financial Markets Association (SIFMA) recommends that government securities dealers not open for trading; any such day will not be considered a business day. Each Fund also may close early on a business day if the SIFMA recommends that government securities dealers close early.

If the financial intermediary through which you place purchase and redemption orders, in turn, places its orders to the Funds’ transfer agent through the NSCC, the Funds’ transfer agent may not receive those orders until the next business day after the order has been entered into the NSCC.

Each Fund may postpone the right of redemption under unusual circumstances, as allowed by the SEC, such as when the NYSE restricts or suspends trading.

For Invesco Premier Portfolio and Invesco Premier U.S. Government Money Portfolio, thirty minutes prior to the Funds’ net asset value determination, a Fund may, in its discretion, limit or refuse to accept purchase orders and may not provide same-day payment of redemption proceeds.

Currently, certain financial intermediaries may serve as agents for the Funds and accept orders on their behalf. Where a financial intermediary serves as agent, the order is priced at the Fund’s net asset value next calculated after it is accepted by the financial intermediary. In such cases, if requested by a Fund, the financial intermediary is responsible for providing information with regard to the time that such order for purchase, redemption or exchange was received. Orders submitted through a financial intermediary that has not received authorization to accept orders on a Fund’s behalf are priced at the Fund’s net asset value next calculated by the Fund after it receives the order from the financial intermediary and accepts it, which may not occur on the day submitted to the financial intermediary.

Frequent Purchases and Redemptions of Fund Shares

The Board of the Funds has not adopted any policies and procedures that would limit frequent purchases and redemptions of the Funds’ shares. The Board does not believe that it is appropriate to adopt any such policies and procedures for the following reasons:

■	Each Fund is offered to investors as a cash management vehicle; therefore, investors should be able to purchase and redeem shares regularly and frequently.
■	One of the advantages of a money market fund as compared to other investment options is liquidity. Any policy that diminishes the liquidity of a Fund will be detrimental to the continuing operations of the Fund.
■	With respect to Funds maintaining a constant net asset value, each Fund’s portfolio securities are valued on the basis of amortized cost, and the Funds seek to maintain a constant net asset value. As a result, the Funds are not subject to price arbitrage opportunities.
■	With respect to Funds maintaining a constant net asset value, because such Funds seek to maintain a constant net asset value, investors are

more likely to expect to receive the amount they originally invested in the Funds upon redemption than other mutual funds. Imposition of redemption fees would run contrary to investor expectations.

The Board considered the risks of not having a specific policy that limits frequent purchases and redemptions, and it determined that those risks are minimal, especially in light of the reasons for not having such a policy as described above. Nonetheless, to the extent that each Fund must maintain additional cash and/or securities with shorter-term durations than may otherwise be required, the Fund’s yield could be negatively impacted. Moreover, excessive trading activity in the Fund’s shares may cause the Fund to incur increased brokerage and administrative costs.

Each Fund and its agent reserve the right at any time to reject or cancel any part of any purchase order. This could occur if each Fund determines that such purchase may disrupt the Fund’s operation or performance.

Taxes

A Fund intends to qualify each year as a regulated investment company and, as such, is not subject to entity-level tax on the income and gain it distributes to shareholders. If you are a taxable investor, dividends and distributions you receive from a Fund generally are taxable to you whether you reinvest distributions in additional Fund shares or take them in cash. Every year, you will be sent information showing the amount of dividends and distributions you received from a Fund during the prior calendar year. In addition, investors in taxable accounts should be aware of the following basic tax points as supplemented below where relevant:

Fund Tax Basics

■	A Fund earns income generally in the form of interest on its investments. This income, less expenses incurred in the operation of a Fund, constitutes the Fund’s net investment income from which dividends may be paid to you. If you are a taxable investor, distributions of net investment income generally are taxable to you as ordinary income.
■	Distributions of net short-term capital gains are taxable to you as ordinary income. Because a Fund is a money market fund, it does not anticipate realizing any long-term capital gains.
■	None of the dividends paid by a Fund will qualify as qualified dividend income subject to reduced rates of taxation in the case of non-corporate shareholders.
■	Distributions declared to shareholders with a record date in December—if paid to you by the end of January—are taxable for federal income tax purposes as if received in December.
■	Any capital gains realized from redemptions of Fund shares will be subject to federal income tax. For tax purposes, an exchange of your shares for shares of another Fund is the same as a sale. An exchange occurs when the purchase of shares of a Fund is made using the proceeds from a redemption of shares of another Fund and is effectuated on the same day as the redemption. Because the Funds, other than Invesco Premier Tax-Exempt Portfolio, expect to maintain a stable net asset value of $1.00 per share, investors should not have any gain or loss on sale or exchange of Fund shares (unless the investor incurs a liquidity fee on such sale or exchange). See, “Liquidity Fees and Redemption Gates.”
■	Invesco Premier Tax-Exempt Portfolio rounds its current net asset value per share to a minimum of the fourth decimal place, therefore, investors will have gain or loss on the sale or exchange of shares of the Fund calculated by subtracting your cost basis from the gross proceeds received from the sale or exchange.
■	Regarding Invesco Premier Tax-Exempt Portfolio, because the Fund is not expected to maintain a stable share price, a sale or exchange of Fund shares may result in a capital gain or loss for you. Unless you choose to adopt a simplified “NAV method” of accounting (described below), any capital gain or loss on the sale or exchange of Fund shares (as noted above) generally will be treated either as short-term if you held your Fund shares for one year or less, or long-term if you held your Fund shares longer. If you elect to adopt the NAV method of accounting, rather than computing gain or loss on every taxable disposition of Fund shares as described above, you would determine your gain or loss based on the change in the aggregate value of your Fund shares during a

	computation period (such as your taxable year), reduced by your net investment (purchases minus sales) in those shares during that period. Under the NAV method, any resulting net capital gain or loss would be treated as short-term capital gain or loss.
■	By law, if you do not provide a Fund with your proper taxpayer identification number and certain required certifications, you may be subject to backup withholding on any distributions of income, capital gains, or proceeds from the sale of your shares. A Fund also must withhold if the Internal Revenue Service (IRS) instructs it to do so. When withholding is required, the amount will be 24% of any distributions or proceeds paid.
■	You will not be required to include the portion of dividends paid by a Fund derived from interest on U.S. government obligations in your gross income for purposes of personal and, in some cases, corporate income taxes in many state and local tax jurisdictions. The percentage of dividends that constitutes dividends derived from interest on federal obligations will be determined annually. This percentage may differ from the actual percentage of interest received by the Fund on federal obligations for the particular days on which you hold shares.
■	An additional 3.8% Medicare tax is imposed on certain net investment income (including ordinary dividends and capital gain distributions received from a Fund and net gains from redemptions or other taxable dispositions of Fund shares) of U.S. individuals, estates and trusts to the extent that such person’s “modified adjusted gross income” (in the case of an individual) or “adjusted gross income” (in the case of an estate or trust) exceeds a threshold amount. This Medicare tax, if applicable, is reported by you on, and paid with, your federal income tax return.
■	Fund distributions and gains from sale or exchange of your Fund shares generally are subject to state and local income taxes, except for Invesco Premier Tax-Exempt Portfolio. Information on Invesco Tax-Exempt Portfolio is located below, under the heading “Invesco Premier Tax-Exempt Portfolio.”
■	Foreign investors should be aware that U.S. withholding, special certification requirements to avoid U.S. backup withholding and claim any treaty benefits and estate taxes may apply to an investment in a Fund.
■	Under the Foreign Account Tax Compliance Act (FATCA), a Fund will be required to withhold a 30% tax on the following payments or distributions made by the Fund to certain foreign entities, referred to as foreign financial institutions or non-financial foreign entities, that fail to comply (or be deemed compliant) with extensive reporting and withholding requirements designed to inform the U.S. Department of the Treasury of U.S.-owned foreign investment accounts: (a) income dividends and (b) after December 31, 2018, certain capital gain distributions, return of capital distributions and the proceeds arising from the sale of Fund shares. A Fund may disclose the information that it receives from its shareholders to the IRS, non-U.S. taxing authorities or other parties as necessary to comply with FATCA or similar laws. Withholding also may be required if a foreign entity that is a shareholder of a Fund fails to provide the Fund with appropriate certifications or other documentation concerning its status under FATCA.
■	There is some degree of uncertainty with respect to the tax treatment of liquidity fees received by a Fund, and such tax treatment may be the subject of future IRS guidance. If a Fund receives liquidity fees, it will consider the appropriate tax treatment of such fees to the Fund at such time.

The above discussion concerning the taxability of Fund dividends and distributions and of redemptions and exchanges of Fund shares is inapplicable to investors that generally are exempt from federal income tax, such as retirement plans that are qualified under Section 401 and 403 of the Code and individual retirement accounts (IRAs) and Roth IRAs.

Invesco Premier Tax-Exempt Portfolio

■

You will not be required to include the “exempt-interest” portion of dividends paid by the Fund in either your gross income for federal income tax purposes or your net investment income subject to the additional 3.8% Medicare tax. You will be required to report the receipt of exempt-interest dividends and other tax-exempt interest on your federal

	income tax returns. The percentage of dividends that constitutes exempt-interest dividends will be determined annually. This percentage may differ from the actual percentage of exempt interest received by the Fund for the particular days in which you hold shares.
■	A Fund may invest in municipal securities the interest on which constitutes an item of tax preference and could give rise to a federal alternative minimum tax liability for you, unless such municipal securities were issued in 2009 or 2010. (Under 2017 legislation commonly known as the Tax Cuts and Jobs Act, corporations are no longer subject to the alternative minimum tax for taxable years of the corporation beginning after December 31, 2017.)
■	Exempt-interest dividends from interest earned on municipal securities of a state, or its political subdivisions, generally are exempt from that state’s personal income tax. Most states, however, do not grant tax-free treatment to interest from municipal securities of other states.
■	A Fund may invest a portion of its assets in securities that pay income that is not tax-exempt. To the extent that dividends paid by a Fund are derived from taxable investments or realized capital gains, they will be taxable as ordinary income or long-term capital gains.
■	A Fund may distribute to you any market discount and net short-term capital gains from the sale of its portfolio securities. If you are a taxable investor, Fund distributions from this income are taxable to you as ordinary income, and generally will neither qualify for the dividends received deduction in the case of corporate shareholders nor as qualified dividend income subject to reduced rates of taxation in the case of noncorporate shareholders.
■	Exempt-interest dividends from a Fund are taken into account when determining the taxable portion of your social security or railroad retirement benefits, may be subject to state and local income taxes, may affect the deductibility of interest on certain indebtedness, and may have other collateral federal income tax consequences for you.
■	There are risks that: (a) a security issued as tax-exempt may be reclassified by the IRS or a state tax authority as taxable and/or (b) future legislative, administrative or court actions could adversely impact the qualification of income from a tax-exempt security as tax-free. Such reclassifications or actions could cause interest from a security to become taxable, possibly retroactively, subjecting you to increased tax liability. In addition, such reclassifications or actions could cause the value of a security, and therefore, the value of the Fund’s shares, to decline.

This discussion of “Taxes” is for general information only and not tax advice. All investors should consult their own tax advisers as to the federal, state, local and foreign tax provisions applicable to them.

Important Notice Regarding Delivery of Security Holder Documents

To reduce Fund expenses, only one copy of most shareholder documents may be mailed to shareholders with multiple accounts at the same address (Householding). Mailing of your shareholder documents may be householded indefinitely unless you instruct us otherwise. If you do not want the mailing of these documents to be combined with those for other members of your household, please contact the Funds’ transfer agent at 800-659-1005 or contact your financial institution. The Funds’ transfer agent will begin sending you individual copies for each account within thirty days after receiving your request.

A-6                                  The Invesco Funds—Institutional Class

Obtaining Additional Information

By Mail:	Invesco Investment Services, Inc. P.O. Box 219286 Kansas City, MO 64121-9286
By Telephone:	(800) 659-1005
On the Internet:	You can send us a request by e-mail or download prospectuses, SAIs, annual or semi-annual reports via our website: www.invesco.com/us

Prospectus

December 20, 2019

Personal Investment Class (IPVXX)

Table of Contents

Fund Summary

borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the Fund's foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulty in enforcing obligations, decreased liquidity or increased volatility. Foreign investments also involve the risk of the possible seizure, nationalization or expropriation of the issuer or foreign deposits (in which the Fund could lose its entire investments in a certain market) and the possible adoption of foreign governmental restrictions such as exchange controls.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. The Fund may impose a fee upon the sale of your shares or may temporarily suspend your ability to sell shares if the Fund’s liquidity falls below required minimums because of market conditions or other factors. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund or maintain the Fund’s $1.00 share price at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. The Fund is subject to the risk that the counterparty may default on its obligation to repurchase the underlying

instruments collateralizing the repurchase agreement, which may cause the Fund to lose money. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, which could result in a loss.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's website at www.invesco.com/us.

Annual Total Returns

Personal Investment Class year-to-date (ended September 30, 2019): 1.39%
Best Quarter (ended December 31, 2018): 0.44%
Worst Quarter (ended March 31, 2017): 0.06%

Average Annual Total Returns (for the periods ended December 31, 2018)
	1 Year	Since Inception
Personal Investment Class: Inception (9/1/2016)	1.42%	0.82%
...

plan or individual retirement account may be taxed when withdrawn from such plan or account.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund, the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s website for more information.

    

Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.

The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change.

The Fund may, from time to time, take temporary defensive positions by holding cash, shortening the Fund’s dollar-weighted average portfolio maturity or investing in other securities that are Eligible Securities for purchase by money market funds as described in the Fund’s Statement of Additional Information (SAI), in anticipation of or in response to adverse market, economic, political or other conditions. If the Fund’s portfolio managers do so, different factors could affect the Fund’s performance and the Fund may not achieve its investment objective.

The Fund’s investments in the types of securities and other investments described in this prospectus vary from time to time, and, at any time, the Fund may not be invested in all of the types of securities and other investments described in this prospectus. The Fund may also invest in securities and other investments not described in this prospectus.

For more information, see “Description of the Funds and Their Investments and Risks” in the Fund’s SAI.

Risks

The principal risks of investing in the Fund are:

Banking and Financial Services Industry Focus Risk. From time to time, the Fund may invest more than 25% of its assets in unsecured bank instruments, including but not limited to certificates of deposit and time deposits, or securities that may have guarantees or credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. To the extent the Fund focuses its investments in these instruments or securities, the Fund’s performance will depend on the overall condition of those industries and the individual banks and financial institutions in which the Fund invests (directly or indirectly). Financial services companies may be dependent on the supply of short-term financing. The value of bank instruments and securities of issuers in the banking and financial services industry, or guaranteed by such issuers, can be affected by and sensitive to changes in government regulation and interest rates and to economic downturns in the United States and abroad. The risk of holding bank instruments is also directly tied to the risk of insolvency or bankruptcy of the issuing banks, which risk may be higher for larger or more complex financial institutions that combine traditional, commercial and investment banking.

Debt Securities Risk. The prices of debt securities held by the Fund will be affected by changes in interest rates, the creditworthiness of the issuer and other factors. An increase in prevailing interest rates typically causes the value of existing debt securities to fall and often has a greater impact on longer-duration debt securities and higher quality debt securities. Falling interest rates will cause the Fund to reinvest the proceeds of debt securities that have been repaid by the issuer at lower interest rates. Falling interest rates may also reduce the Fund’s distributable income because interest payments on floating rate debt instruments held by the Fund will decline. The Fund could lose money on investments in debt securities if the issuer or borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. If an issuer seeks to restructure the terms of its borrowings or the Fund is required to seek recovery upon a default in the payment of interest or the repayment of principal, the Fund may incur additional expenses. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect

payments of principal and interest. Furthermore, the value of the Fund’s foreign investments may be adversely affected by political and social instability in their home countries, by changes in economic or taxation policies in those countries, or by the difficulty in enforcing obligations in those countries. Foreign companies generally may be subject to less stringent regulations than U.S. companies, including financial reporting requirements and auditing and accounting controls. As a result, there generally is less publicly available information about foreign companies than about U.S. companies. Trading in many foreign securities may be less liquid and more volatile than U.S. securities due to the size of the market or other factors.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. There can be no guarantee that the Adviser’s investment techniques or investment decisions will produce the desired results. Additionally, legislative, regulatory, or tax developments may affect the investments or investment strategies available to the Adviser in connection with managing the Fund, which may also adversely affect the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. The value of the Fund’s investments may go up or down due to general market conditions which are not specifically related to the particular issuer, such as real or perceived adverse economic conditions, changes in the general outlook for revenues or corporate earnings, changes in interest or currency rates, regional or global instability, or adverse investor sentiment generally. The value of the Fund’s investments may also go up or down due to factors that affect an individual issuer or a particular industry or sector, such as changes in production costs and competitive conditions within an industry. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. The Fund may impose a fee upon the sale of your shares or may temporarily suspend your ability to sell shares if the Fund’s liquidity falls below required minimums because of market conditions or other factors. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund or maintain the Fund’s $1.00 share price at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Municipal obligations may be more susceptible to downgrades or defaults during recessions or similar periods of economic stress. Municipal securities structured as revenue bonds are generally not backed by the taxing power of the issuing municipality but rather the revenue from the particular project or entity for which the bonds were issued. If the Internal Revenue Service determines

that an issuer of a municipal security has not complied with applicable tax requirements, interest from the security could be treated as taxable, which could result in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Portfolio Holdings

Information concerning the Fund’s portfolio holdings as well as its dollar-weighted average portfolio maturity and dollar-weighted average life to maturity as of the last business day or subsequent calendar day of the preceding month will be posted on its website no later than five business days after the end of the month and remain posted on the website for six months thereafter.

A description of Fund policies and procedures with respect to the disclosure of Fund portfolio holdings is available in the SAI, which is available to Qualified Persons at www.invesco.com/us.

commissions, issue and transfer taxes, and other costs chargeable to the Fund in connection with securities transactions to which the Fund is a party or in connection with securities owned by the Fund and (iii) other expenditures which are capitalized in accordance with generally accepted accounting principles applicable to investment companies.

The Adviser, Invesco Distributors, or one of their affiliates may, from time to time, at their expense out of their own financial resources make cash payments to financial intermediaries for marketing support and/or administrative support. These marketing support payments and administrative support payments are in addition to the payments by the Fund described in this prospectus. Because they are not paid by the Fund, these marketing support payments and administrative support payments will not change the price paid by investors for the purchase of the Fund’s shares or the amount that the Fund will receive as proceeds from such sales. In certain cases these cash payments could be significant to the financial intermediaries. These cash payments may also create an incentive for a financial intermediary to recommend or sell shares of the Fund to its customers. Please contact your financial intermediary for details about any payments they or their firm may receive in connection with the sale of shares of the Fund or the provision of services to the Fund. Also, please see the Fund’s SAI for more information about these types of payments.

A discussion regarding the basis for the Board’s approval of the investment advisory agreement and investment sub-advisory agreements of the Fund is available in the Fund’s most recent annual report to shareholders for the twelve-month period ended August 31.

Other Information

    

5                                  Invesco Treasurer's Series Trust

Personal Investment Class

	Net asset value, beginning of period	Net investment income(a)	Net gains on securities	Total from investment operations	Dividends from net investment income	Net asset value, end of period	Total return(b)	Net assets, end of period (000's omitted)	Ratio of expenses to average net assets with fee waivers and/or expense reimbursements	Ratio of expenses to average net assets without fee waivers and/or expense reimbursements	Ratio of net investment income to average net assets
Invesco Premier Portfolio
Year ended 08/31/19	$1.00	$0.02	$0.00	$0.02	$(0.02)	$1.00	1.81%	$13,771	0.73% (c)	0.80% (c)	1.82% (c)
Year ended 08/31/18	1.00	0.01	0.00	0.01	(0.01)	1.00	1.05	10	0.73	0.80	1.08
Year ended 08/31/17(d)	1.00	0.00	0.00	0.00	(0.00)	1.00	0.35	10	0.68	0.80	0.13
...

6                                  Invesco Treasurer's Series Trust

Hypothetical Investment and Expense Information

    

In connection with the final settlement reached between Invesco and certain of its affiliates with certain regulators, including the New York Attorney General’s Office, the SEC and the Colorado Attorney General’s Office (the settlement) arising out of certain market timing and unfair pricing allegations made against Invesco and certain of its affiliates, Invesco and certain of its affiliates agreed, among other things, to disclose certain hypothetical information regarding investment and expense information to Fund shareholders. The chart below is intended to reflect the annual and cumulative impact of the Fund’s expenses, including investment advisory

fees and other Fund costs, on the Fund’s returns over a 10-year period. The example reflects the following:

■	You invest $10,000 in the Fund and hold it for the entire 10-year period;
■	Your investment has a 5% return before expenses each year; and
■	The Fund’s current annual expense ratio includes any applicable contractual fee waiver or expense reimbursement for the period committed.

There is no assurance that the annual expense ratio will be the expense ratio for the Fund’s classes for any of the years shown. This is only a hypothetical presentation made to illustrate what expenses and returns would be under the above scenarios; your actual returns and expenses are likely to differ (higher or lower) from those shown below.

Invesco Premier Portfolio — Personal Investment Class	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6	Year 7	Year 8	Year 9	Year 10
Annual Expense Ratio1	0.73%	0.80%	0.80%	0.80%	0.80%	0.80%	0.80%	0.80%	0.80%	0.80%
Cumulative Return Before Expenses	5.00%	10.25%	15.76%	21.55%	27.63%	34.01%	40.71%	47.75%	55.13%	62.89%
Cumulative Return After Expenses	4.27%	8.65%	13.21%	17.97%	22.92%	28.08%	33.46%	39.07%	44.91%	51.00%
End of Year Balance	$10,427.00	$10,864.93	$11,321.26	$11,796.75	$12,292.22	$12,808.49	$13,346.45	$13,907.00	$14,491.09	$15,099.72
Estimated Annual Expenses	$ 74.56	$ 85.17	$ 88.74	$ 92.47	$ 96.36	$ 100.40	$ 104.62	$ 109.01	$ 113.59	$ 118.36
...

7                                  Invesco Treasurer's Series Trust

---

Class	Initial Investments*	Additional Investments
Personal Investment	$1,000	No minimum

How to Redeem Shares

Invesco Premier Portfolio
Through a Financial Intermediary	If placing a redemption request through your financial intermediary, redemption proceeds will be transmitted electronically to your pre-authorized bank account. The Fund’s transfer agent must receive your financial intermediary’s instructions before 5:30 p.m. Eastern Time on a business day in order to effect the redemption on that day. If the financial intermediary wishes to place a redemption order between 5:00 p.m. Eastern Time and 5:30 p.m. Eastern Time on a business day it must do so by telephone.
By Telephone	If placing a redemption request by telephone, you or any person authorized to make account transactions, must call the Fund’s transfer agent before 5:30 p.m. Eastern Time on a business day to effect the redemption transaction on that day.
By Liquidity Link	If placing a redemption request through Liquidity Link, the Fund’s transfer agent must receive your redemption request before 5:00 p.m. Eastern Time on a business day to effect the transaction on that day.
...

Payment of Redemption Proceeds

All redemption orders are processed at the net asset value next determined after the Fund’s transfer agent receives a redemption request in good order. The Fund’s transfer agent will normally wire payment for redemptions received prior to 5:30 p.m. Eastern Time on the business day received, and in any event no more than seven days, after your redemption request is received in good order. However, depending on such factors as market liquidity and the size of the redemption, for a redemption request received by the Fund’s transfer agent between 5:00 p.m. Eastern Time and 5:30 p.m. Eastern Time, proceeds may not be wired until the next business day. If the Fund’s transfer agent receives a redemption request on a business day after 5:30 p.m. Eastern Time, the redemption will be effected at the net asset value of the Fund determined on the next business day, and the Fund’s transfer agent will normally wire redemption proceeds on such next business day, and in any event no more than seven days, after your redemption request is received in good order.

If the Fund exercises its discretion to close early on a business day, as described in the “Pricing of Shares—Timing of Orders” section of this prospectus, the Fund may not provide same day settlement of redemption orders.

Dividends payable up to the date of redemption on redeemed shares will normally be paid or reinvested on the next dividend payment date. However, if all of the shares in your account were redeemed from an individual account or from an aggregate account, you may request that the dividends payable up to the date of redemption accompany the proceeds of the redemption.

Redemptions by Telephone

If you redeem by telephone, the Fund’s transfer agent will transmit the amount of the redemption proceeds electronically to your pre-authorized bank account. The Fund’s transfer agent uses reasonable procedures to confirm that instructions communicated by telephone are genuine, and the Fund and the Fund’s transfer agent are not liable for telephone instructions that are reasonably believed to be genuine.

Redemptions by Liquidity Link

If you redeem via Liquidity Link, the Fund’s transfer agent will transmit your redemption proceeds electronically to your pre-authorized bank account. The Fund and the Fund’s transfer agent are not liable for Liquidity Link instructions that are not genuine.

Suspension of Redemptions

In the event that the Fund, at the end of a business day, has invested less than 10% of its total assets in weekly liquid assets or the Fund’s price per share as computed for the purpose of distribution, redemption and repurchase, rounded to the nearest 1%, has deviated from the stable price established by the Fund’s Board of Trustees (“Board”) or the Board, including a majority of trustees who are not interested persons as defined in the 1940 Act, determines that such a deviation is likely to occur, and the

Board, including a majority of trustees who are not interested persons of the Fund, irrevocably has approved the liquidation of the Fund, the Fund’s Board has the authority to suspend redemptions of Fund shares.

Liquidity Fees and Redemption Gates

For Invesco Premier Portfolio, if the Fund’s weekly liquid assets fall below 30% of its total assets, the Board, in its discretion, may impose liquidity fees of up to 2% of the value of the shares redeemed and/or suspend redemptions (redemption gates). In addition, if any such Fund’s weekly liquid assets falls below 10% of its total assets at the end of any business day, the Fund must impose a 1% liquidity fee on shareholder redemptions unless the Board determines that not doing so is in the best interests of the Fund.

Liquidity fees and redemption gates are most likely to be imposed, if at all, during times of extraordinary market stress. In the event that a liquidity fee or redemption gate is imposed, the Board expects that for the duration of its implementation and the day after which such gate or fee is terminated, the Fund would strike only one net asset value per day, at the Fund’s last scheduled net asset value calculation time.

The imposition and termination of a liquidity fee or redemption gate will be reported by the Fund to the SEC on Form N-CR. Such information will also be available on the Fund’s website. In addition, the Fund will communicate such action through a supplement to its registration statement and may further communicate such action through a press release or by other means. If a liquidity fee is applied by the Board, it will be charged on all redemption orders submitted after the effective time of the imposition of the fee by the Board. Liquidity fees would reduce the amount you receive upon redemption of your shares. In the event the Fund imposes a redemption gate, the Fund or any financial intermediary on its behalf will not accept redemption requests until the Fund provides notice that the redemption gate has been terminated.

Redemption requests submitted while a redemption gate is imposed will be cancelled without further notice. If shareholders still wish to redeem their shares after a redemption gate has been lifted, they will need to submit a new redemption request.

Liquidity fees and redemption gates will generally be used to assist the Fund to help preserve its market–based NAV per share. It is possible that a liquidity fee will be returned to shareholders in the form of a distribution. The Board may, in its discretion, terminate a liquidity fee or redemption gate at any time if it believes such action to be in the best interest of the Fund. Also, liquidity fees and redemption gates will automatically terminate at the beginning of the next business day once the Fund’s weekly liquid assets reach at least 30% of its total assets. Redemption gates may only last up to 10 business days in any 90-day period. When a fee or a gate is in place, the Fund may elect not to permit the purchase of shares or to subject the purchase of shares to certain conditions, which may include affirmation of the purchaser’s knowledge that a fee or a gate is in effect. When a fee or a gate is in place, shareholders will not be permitted to exchange into or out of the Fund.

There is some degree of uncertainty with respect to the tax treatment of liquidity fees received by the Fund, and such tax treatment may be the subject to future IRS guidance. If the Fund receives liquidity fees, it will consider the appropriate tax treatment of such fees to the Fund at such time.

Financial intermediaries are required to promptly take the steps requested by the Funds or their designees to impose or help to implement a liquidity fee or redemption gate as requested from time to time, including the rejection of orders due to the imposition of a fee or gate or the prompt re-confirmation of orders following a notification regarding the implementation of a fee or gate. If a liquidity fee is imposed, these steps are expected to include the submission of separate, rather than combined, purchase and redemption orders from the time of the effectiveness of the liquidity fee or redemption gate and the submission of such order information to the Fund or its designee prior to the next calculation of the Fund’s net asset value. Unless otherwise agreed to between the Fund and financial intermediary, the Fund will withhold liquidity fees on behalf of financial intermediaries. With regard to such orders, a redemption request that the Fund determines in its sole discretion has been received in good

order by the Fund or its designated agent prior to the imposition of a liquidity fee or redemption gate may be paid by the Fund despite the imposition of a redemption gate or without the deduction of a liquidity fee. If a liquidity fee is imposed during the day, an intermediary who receives both purchase and redemption orders from a single account holder is not required to net the purchase and redemption orders. However, the intermediary is permitted to apply the liquidity fee to the net amount of redemptions (even if the purchase order was received prior to the time the liquidity fee was imposed).

Where a Financial Intermediary serves as the Fund’s agent for the purpose of receiving orders, trades that are not transmitted to the Fund by the Financial Intermediary before the time required by the Fund or the transfer agent may, in the Fund’s discretion, be processed on an as-of basis, and any cost or loss to the Fund or transfer agent or their affiliates, from such transactions shall be borne exclusively by the Financial Intermediary.

Redemptions Initiated by the Fund

If the Fund determines that you have not provided a correct Social Security or other tax identification number on your account application, or the Fund is not able to verify your identity as required by law, the Fund may, at its discretion, redeem the account and distribute the proceeds to you.

In order to separate retail investors (natural persons) and non-retail investors, Invesco Premier Portfolio reserves the right to redeem shares in any account that the Fund cannot confirm to its satisfaction are beneficially owned by natural persons. The Fund will provide advance written notice of its intent to make any such involuntary redemptions. The Fund reserves the right to redeem shares in any account that they cannot confirm to their satisfaction are beneficially owned by natural persons, after providing advance notice.

Neither the Fund nor its investment adviser will be responsible for any loss in an investor’s account or tax liability resulting from an involuntary redemption.

Rights Reserved by the Fund

The Fund and its agent reserve the right at any time to:

■	reject or cancel all or any part of any purchase order;
■	modify any terms or conditions related to the purchase or redemption of shares of any Fund; or
■	suspend, change or withdraw all or any part of the offering made by this prospectus.

Exchange Policy

You may only exchange Personal Investment Class, Private Investment Class, Reserve Class and Resource Class shares of Invesco Premier Portfolio for shares of other Funds in the Trust or for shares of other money market funds in Short-Term Investments Trust, but may not exchange Personal Investment Class, Private Investment Class, Reserve Class and Resource Class shares of Invesco Premier Portfolio for retail shares of other Invesco Funds or Investor Class shares of Funds in the Trust.

Pricing of Shares

Determination of Net Asset Value

The price of each Fund’s shares is the Fund’s net asset value per share. Each Fund will generally determine the net asset value of its shares at 5:30 p.m. Eastern Time.

If a Fund closes early on a business day, as described below under “Pricing of Shares—Timing of Orders”, the Fund will calculate its net asset value as of the time of such closing.

Each Fund values portfolio securities on the basis of amortized cost, which approximates market value. This method of valuation is designed to enable a Fund to price its shares at $1.00 per share. The Funds cannot guarantee that their net asset value will always remain at $1.00 per share.

Timing of Orders

The Fund opens for business at 8:30 a.m. Eastern Time. The Fund prices purchase and redemption orders on each business day at the net asset value calculated after the Fund’s transfer agent receives an order in good form.

A business day is any day that (1) both the Federal Reserve Bank of New York and the Fund’s custodian are open for business and (2) the primary trading markets for the Fund’s portfolio instruments are open and the Fund’s management believes there is an adequate market to meet purchase and redemption requests. The Fund is authorized not to open for trading on a day that is otherwise a business day if the Securities Industry and Financial Markets Association (SIFMA) recommends that government securities dealers not open for trading; any such day will not be considered a business day. The Fund also may close early on a business day if the SIFMA recommends that government securities dealers close early.

If the financial intermediary through which you place purchase and redemption orders, in turn, places its orders to the Fund’s transfer agent through the NSCC, the Fund’s transfer agent may not receive those orders until the next business day after the order has been entered into the NSCC.

The Fund may postpone the right of redemption under unusual circumstances, as allowed by the SEC, such as when the New York Stock Exchange restricts or suspends trading.

For Invesco Premier Portfolio, thirty minutes prior to the Fund’s net asset value determination, the Fund may, in its discretion, limit or refuse to accept purchase orders and may not provide same-day payment of redemption proceeds.

Currently, certain financial intermediaries may serve as agents for the Funds and accept orders on their behalf. Where a financial intermediary serves as agent, the order is priced at the Fund’s net asset value next calculated after it is accepted by the financial intermediary. In such cases, if requested by a Fund, the financial intermediary is responsible for providing information with regard to the time that such order for purchase, redemption or exchange was received. Orders submitted through a financial intermediary that has not received authorization to accept orders on a Fund’s behalf are priced at the Fund’s net asset value next calculated by the Fund after it receives the order from the financial intermediary and accepts it, which may not occur on the day submitted to the financial intermediary.

Frequent Purchases and Redemptions of Fund Shares

The Board of the Funds has not adopted any policies and procedures that would limit frequent purchases and redemptions of the Funds’ shares. The Board does not believe that it is appropriate to adopt any such policies and procedures for the following reasons:

■	The Fund is offered to investors as a cash management vehicle; therefore, investors should be able to purchase and redeem shares regularly and frequently.
■	One of the advantages of a money market fund as compared to other investment options is liquidity. Any policy that diminishes the liquidity of a Fund will be detrimental to the continuing operations of the Fund.
■	With respect to Funds maintaining a constant net asset value, each Fund’s portfolio securities are valued on the basis of amortized cost, and the Funds seek to maintain a constant net asset value. As a result, the Funds are not subject to price arbitrage opportunities.
■	With respect to Funds maintaining a constant net asset value, because such Funds seek to maintain a constant net asset value, investors are more likely to expect to receive the amount they originally invested in the Funds upon redemption than other mutual funds. Imposition of redemption fees would run contrary to investor expectations.

The Board considered the risks of not having a specific policy that limits frequent purchases and redemptions, and it determined that those risks are minimal, especially in light of the reasons for not having such a policy as described above. Nonetheless, to the extent that each Fund must maintain additional cash and/or securities with shorter-term durations than may otherwise be required, the Fund’s yield could be negatively impacted. Moreover, excessive trading activity in the Fund’s shares may cause the Fund to incur increased brokerage and administrative costs.

Each Fund and its agent reserve the right at any time to reject or cancel any part of any purchase order. This could occur if each Fund determines that such purchase may disrupt the Fund’s operation or performance.

Taxes

A Fund intends to qualify each year as a regulated investment company and, as such, is not subject to entity-level tax on the income and gain it distributes to shareholders. If you are a taxable investor, dividends and distributions you receive from a Fund generally are taxable to you whether you reinvest distributions in additional Fund shares or take them in cash. Every year, you will be sent information showing the amount of dividends and distributions you received from a Fund during the prior calendar year. In addition, investors in taxable accounts should be aware of the following basic tax points as supplemented below where relevant:

Fund Tax Basics

■	A Fund earns income generally in the form of interest on its investments. This income, less expenses incurred in the operation of a Fund, constitutes the Fund’s net investment income from which dividends may be paid to you. If you are a taxable investor, distributions of net investment income generally are taxable to you as ordinary income.
■	Distributions of net short-term capital gains are taxable to you as ordinary income. Because a Fund is a money market fund, it does not anticipate realizing any long-term capital gains.
■	None of the dividends paid by a Fund will qualify as qualified dividend income subject to reduced rates of taxation in the case of non-corporate shareholders.
■	Distributions declared to shareholders with a record date in December—if paid to you by the end of January—are taxable for federal income tax purposes as if received in December.
■	Any capital gains realized from redemptions of Fund shares will be subject to federal income tax. For tax purposes, an exchange of your shares for shares of another Fund is the same as a sale. An exchange occurs when the purchase of shares of a Fund is made using the proceeds from a redemption of shares of another Fund and is effectuated on the same day as the redemption. Because a Fund expects to maintain a stable net asset value of $1.00 per share, investors should not have any gain or loss on sale or exchange of Fund shares (unless the investor incurs a liquidity fee on such sale or exchange). See “Liquidity Fees and Redemption Gates.”
■	By law, if you do not provide a Fund with your proper taxpayer identification number and certain required certifications, you may be subject to backup withholding on any distributions of income, capital gains, or proceeds from the sale of your shares. A Fund also must withhold if the Internal Revenue Service (IRS) instructs it to do so. When withholding is required, the amount will be 24% of any distributions or proceeds paid.
■	You will not be required to include the portion of dividends paid by a Fund derived from interest on U.S. government obligations in your gross income for purposes of personal and, in some cases, corporate income taxes in many state and local tax jurisdictions. The percentage of dividends that constitutes dividends derived from interest on federal obligations will be determined annually. This percentage may differ from the actual percentage of interest received by the Fund on federal obligations for the particular days on which you hold shares.
■	An additional 3.8% Medicare tax is imposed on certain net investment income (including ordinary dividends and capital gain distributions received from a Fund and net gains from redemptions or other taxable dispositions of Fund shares) of U.S. individuals, estates and trusts to the extent that such person’s “modified adjusted gross income” (in the case of an individual) or “adjusted gross income” (in the case of an estate or trust) exceeds a threshold amount. This Medicare tax, if applicable, is reported by you on, and paid with, your federal income tax return.
■	Fund distributions and gains from sale or exchange of your Fund shares generally are subject to state and local income taxes.
■	Foreign investors should be aware that U.S. withholding, special certification requirements to avoid U.S. backup withholding and claim any treaty benefits and estate taxes may apply to an investment in a Fund.

■

Under the Foreign Account Tax Compliance Act (FATCA), a Fund will be required to withhold a 30% tax on the following payments or distributions made by the Fund to certain foreign entities, referred to as foreign financial institutions or non-financial foreign entities, that fail to comply (or be deemed compliant) with extensive reporting and withholding requirements designed to inform the U.S. Department of the Treasury of U.S.-owned foreign investment accounts: (a) income dividends and (b) after December 31, 2018, certain capital gain distributions, return of capital distributions and the proceeds arising from the sale of Fund shares. A Fund may disclose the information that it receives from its shareholders to the IRS, non-U.S. taxing authorities or other parties as necessary to comply with FATCA or similar laws. Withholding also may be required if a foreign entity that is a shareholder of a Fund fails to provide the Fund with appropriate certifications or other documentation concerning its status under FATCA.

■

There is some degree of uncertainty with respect to the tax treatment of liquidity fees received by a Fund, and such tax treatment may be the subject of future IRS guidance. If a Fund receives liquidity fees, it will consider the appropriate tax treatment of such fees to the Fund at such time.

The above discussion concerning the taxability of Fund dividends and distributions and of redemptions and exchanges of Fund shares is inapplicable to investors that generally are exempt from federal income tax, such as retirement plans that are qualified under Section 401 and 403 of the Code and individual retirement accounts (IRAs) and Roth IRAs.

This discussion of “Taxes” is for general information only and not tax advice. All investors should consult their own tax advisers as to the federal, state, local and foreign tax provisions applicable to them.

Important Notice Regarding Delivery of Security Holder Documents

To reduce Fund expenses, only one copy of most shareholder documents may be mailed to shareholders with multiple accounts at the same address (Householding). Mailing of your shareholder documents may be householded indefinitely unless you instruct us otherwise. If you do not want the mailing of these documents to be combined with those for other members of your household, please contact the Funds’ transfer agent at 800-659-1005 or contact your financial institution. The Funds’ transfer agent will begin sending you individual copies for each account within thirty days after receiving your request.

Obtaining Additional Information

By Mail:	Invesco Investment Services, Inc. P.O. Box 219078 Kansas City, Missouri 64121-9078
By Telephone:	(800) 659-1005
On the Internet:	You can send us a request by e-mail or download prospectuses, SAIs, annual or semi-annual reports via our website: www.invesco.com/us

Prospectus

December 20, 2019

Private Investment Class (IPTXX)

Table of Contents

Fund Summary

borrower fails to meet its obligations to make interest payments and/or to repay principal in a timely manner. Changes in an issuer’s financial strength, the market’s perception of such strength or in the credit rating of the issuer or the security may affect the value of debt securities. The Adviser’s credit analysis may fail to anticipate such changes, which could result in buying a debt security at an inopportune time or failing to sell a debt security in advance of a price decline or other credit event.

Foreign Securities and Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest. Furthermore, the Fund's foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulty in enforcing obligations, decreased liquidity or increased volatility. Foreign investments also involve the risk of the possible seizure, nationalization or expropriation of the issuer or foreign deposits (in which the Fund could lose its entire investments in a certain market) and the possible adoption of foreign governmental restrictions such as exchange controls.

Management Risk. The Fund is actively managed and depends heavily on the Adviser’s judgment about markets, interest rates or the attractiveness, relative values, liquidity, or potential appreciation of particular investments made for the Fund’s portfolio. The Fund could experience losses if these judgments prove to be incorrect. Additionally, legislative, regulatory, or tax developments may adversely affect management of the Fund and, therefore, the ability of the Fund to achieve its investment objective.

Market Risk. The market values of the Fund’s investments, and therefore the value of the Fund’s shares, will go up and down, sometimes rapidly or unpredictably. Market risk may affect a single issuer, industry or section of the economy, or it may affect the market as a whole. Individual stock prices tend to go up and down more dramatically than those of certain other types of investments, such as bonds. During a general downturn in the financial markets, multiple asset classes may decline in value. When markets perform well, there can be no assurance that specific investments held by the Fund will rise in value.

Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. The Fund may impose a fee upon the sale of your shares or may temporarily suspend your ability to sell shares if the Fund’s liquidity falls below required minimums because of market conditions or other factors. The Fund’s sponsor has no legal obligation to provide financial support to the Fund, and you should not rely on or expect that the sponsor will enter into support agreements or take other actions to provide financial support to the Fund or maintain the Fund’s $1.00 share price at any time. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures, illiquid markets, and/or significant market volatility.

Municipal Securities Risk. The risk of a municipal obligation generally depends on the financial and credit status of the issuer. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell the security. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.

Repurchase Agreement Risk. The Fund is subject to the risk that the counterparty may default on its obligation to repurchase the underlying

instruments collateralizing the repurchase agreement, which may cause the Fund to lose money. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.

U.S. Government Obligations Risk. Obligations of U.S. Government agencies and authorities receive varying levels of support and may not be backed by the full faith and credit of the U.S. Government, which could affect the Fund’s ability to recover should they default. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of these instruments, which could result in a loss.

Yield Risk. The Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. When interest rates are very low, the Fund’s expenses could absorb all or a portion of the Fund’s income and yield. Additionally, inflation may outpace and diminish investment returns over time.

Performance Information

The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund's past performance is not necessarily an indication of its future performance. Updated performance information is available on the Fund's website at www.invesco.com/us.

Annual Total Returns

Private Investment Class year-to-date (ended September 30, 2019): 1.57%
Best Quarter (ended December 31, 2018): 0.50%
Worst Quarter (ended March 31, 2017): 0.13%

Average Annual Total Returns (for the periods ended December 31, 2018)
	1 Year	Since Inception
Private Investment Class: Inception (9/1/2016)	1.66%	1.06%
...

plan or individual retirement account may be taxed when withdrawn from such plan or account.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund, the Fund’s distributor or its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson or financial adviser to recommend the Fund over another investment. Ask your salesperson or financial adviser or visit your financial intermediary’s website for more information.