DETERMINATION OF NET ASSET VALUE

The price of each fund's shares is the fund's net asset value per share. The funds value portfolio securities for which market quotations are readily available at market value. The funds value all other securities and assets for which market quotations are unavailable or unreliable at their fair value in good faith using procedures approved by the Boards of Trustees of the funds (collectively, the Board). The Board has delegated the daily determination of good faith fair value methodologies to Invesco Aim's Valuation Committee, which acts in accordance with Board approved policies. On a quarterly basis, Invesco Aim provides the Board various reports indicating the quality and effectiveness of its fair value decisions on portfolio holdings. Securities and other assets quoted in foreign currencies are valued in U.S. dollars based on the prevailing exchange rates on that day.

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 which 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 market quotations are not readily available, including where Invesco Aim determines that the closing price of the security is unreliable, Invesco Aim will value the security at fair value in good faith using procedures approved by the Board. Fair value pricing may 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.

Fair value is that amount that the owner might reasonably expect to receive for the security upon its current sale. Fair value requires consideration of all appropriate factors, including indications of fair value available from pricing services. A fair value price is an estimated price and may vary from the prices used by other mutual funds to calculate their net asset values.

Invesco Aim may use indications of fair value from pricing services approved by the Board. In other circumstances, the Invesco Aim Valuation Committee may fair value securities in good faith using procedures approved by the Board. As a means of evaluating its fair value process, Invesco Aim routinely compares closing market prices, the next day's opening prices for the security in its primary market if available, and indications of fair value from other sources. Fair value pricing methods and pricing services can change from time to time as approved by the Board.

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, Invesco Aim 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 Invesco Aim determines, in its judgment, is likely to have affected the closing price of a foreign security, it will price the security at fair value. Invesco Aim 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 Invesco Aim believes, at the approved degree of certainty, that the price is not reflective of current market value, Invesco Aim 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.

THE AIM FUNDS

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. 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. 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 Invesco Aim valuation committee will fair value the security using procedures approved by the Board.

Short-term Securities. The funds' short-term investments are valued at amortized cost when the security has 60 days or less to maturity. AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio value all their securities at amortized cost. AIM High Income Municipal Fund, AIM Municipal Bond Fund and AIM Tax-Free Intermediate Fund 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.

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. To the extent 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.

Each fund 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. AIM Money Market Fund also determines its net asset value as of 12:00 noon Eastern Time on each business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio determine the net asset value of their shares every fifteen minutes on each business day, beginning at 8:00 a.m. Eastern Time. The last net asset value determination on any business day for Premier Portfolio and Premier U.S. Government Money Portfolio will generally occur at 5:30 p.m. Eastern Time, and the last net asset value determination on any business day for Premier Tax-Exempt Portfolio will generally occur at 4:30 p.m. Eastern Time. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio are authorized not to open for trading on a day that is otherwise a business day if the Federal Reserve Bank of New York and the Bank of New York, the fund's custodian, are not open for business or the Securities Industry and Financial Markets Association (SIFMA) recommends that government securities dealers not open for trading and any such day will not be considered a business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio also may close early on a business day if SIFMA recommends that government securities dealers close early. If Premier Portfolio, Premier Tax-Exempt Portfolio or Premier U.S. Government Money Portfolio uses its discretion to close early on a business day, the last net asset value calculation will occur as of the time of such closing.

From time to time and in circumstances deemed appropriate by Invesco Aim in its sole discretion, each of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio may remain open for business, during customary business day hours, on a day that the NYSE is closed for business. In such event, on such day you will be permitted to purchase or redeem shares of such funds and net asset values will be calculated for such funds.

TIMING OF ORDERS

For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day prior to the close of the customary trading session or any earlier NYSE closing time that day. For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, purchase orders that are received and accepted before the close of the customary trading session or any earlier NYSE closing time on a business day generally are processed that day and settled on the next business day.

For Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day, prior to the last net asset value determination on such business day; however, if your order is received and accepted after the close of the customary trading session or any earlier NYSE closing time that day, your order generally will be processed on the next business day and settled on the second business day following the receipt and acceptance of your order.

For all funds, you can exchange shares on each business day, prior to the close of the customary trading session or any earlier NYSE closing time that day. Shareholders of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio therefore cannot exchange their shares after the close of the customary trading session or any earlier NYSE closing time on a particular day, even though these funds remain open after such closing time.

The funds price purchase, exchange and redemption orders at the net asset value calculated after the transfer agent receives an order in good order. Any applicable sales charges are applied at the time an order is processed. A fund may postpone the right of redemption only under unusual circumstances, as allowed by the Securities and Exchange Commission, such as when the NYSE restricts or suspends trading.

THE AIM FUNDS

TAXES

In general, if you are a taxable investor, dividends and distributions you receive are taxable as ordinary income or long-term capital gains for federal income tax purposes. This is true 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 each fund during the prior year. Investors should read the information under the heading "Other Information--Special Tax Information Regarding the Fund" where applicable in the fund's prospectus. In addition, investors in taxable accounts should be aware of the following basic tax points:

- Distributions of net short-term capital gains are taxable to you as ordinary income. A fund that is expected to have higher turnover than that of other funds is more likely to generate short-term gain or loss.

- 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.

- If you are an individual and meet certain holding period requirements, a portion of income dividends paid by a fund may be designated as qualified dividend income eligible for taxation at long-term capital gain rates. These reduced rates generally are available for dividends paid by a fund out of dividends earned on the 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.

- 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 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.

- If you invest in a fund shortly before it makes a capital gains distribution, the distribution will lower the value of the fund's shares by the amount of the distribution and, in effect, you will receive some of your investment back in the form of a taxable distribution. This is sometimes referred to as "buying a dividend."

- 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 28% of any distributions or proceeds paid.

- 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 as a foreign tax credit. 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.

The preceding discussion concerning the taxability of fund dividends and distributions and of redemptions and exchanges of fund shares is inapplicable to investors that are generally exempt from federal income tax, such as retirement plans that are qualified under Section 401, 403, 408, 408A and 457 of the Code, individual retirement accounts (IRAs) and Roth IRAs. You should consult your tax advisor before investing in a fund.

PAYMENTS TO FINANCIAL ADVISORS

The financial advisor 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 Aim Distributors or one or more of its corporate affiliates (collectively, Invesco Aim Affiliates) may make additional cash payments to financial advisors 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 Aim Affiliates make these payments from their own resources, from Invesco Aim Distributors' retention of initial sales charges and from payments to Invesco Aim Distributors made by the funds under their 12b-1 plans. In this context, "financial advisors" include any broker, dealer, bank (including bank trust departments), registered investment advisor, financial planner, retirement plan administrator and any other financial intermediary having a selling, administration or similar agreement with Invesco Aim Affiliates.

Invesco Aim Affiliates make payments as incentives to certain financial advisors to promote and sell shares of the funds. The benefits Invesco Aim Affiliates receive when they make these payments include, among other things, placing the funds on the financial advisor's funds sales system, and access (in some cases on a preferential basis over other competitors) to individual members of the financial advisor's sales force or to the financial advisor's management. These payments are sometimes referred to as "shelf space" payments because the payments compensate the financial advisor for including the funds in its fund sales system (on its "sales shelf"). Invesco Aim Affiliates compensate financial advisors differently depending typically on the level and/or type of considerations provided by the financial advisor. The payments Invesco Aim 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% of the public offering price of all shares sold by the financial advisor 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 advisor (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 AIM FUNDS

the funds and Asset-Based Payments primarily create incentives to retain previously sold shares of the funds in investor accounts. Invesco Aim Affiliates may pay a financial advisor either or both Sales-Based Payments and Asset-Based Payments.

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

Invesco Aim Affiliates also may make payments to certain financial advisors 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 Aim 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 Statement of Additional Information about these payments and the services provided by financial advisors. In certain cases these payments could be significant to the financial advisor. Your financial advisor may charge you additional fees or commissions other than those disclosed in this prospectus. You can ask your financial advisor about any payments it receives from Invesco Aim Affiliates or the funds, as well as about fees and/or commissions it charges.

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. 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 advisor believes the change would be in the best interests of long-term shareholders.

The Invesco Aim Affiliates currently use the following tools designed to discourage excessive short-term trading in the retail funds:

- Trade activity monitoring.

- Trading guidelines.

- Redemption fees on trades in certain funds.

- 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 Aim 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.

Some investments in the funds are made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and some investments are made indirectly through products that use the funds as underlying investments, such as employee benefit plans, funds of funds, qualified tuition plans, and variable insurance contracts (these products are generally referred to as conduit investment vehicles). If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary account or conduit investment vehicle may be considered an individual shareholder of the funds for purposes of assessing redemption fees. In these cases, the funds are likely to be limited in their ability to assess redemption fees on transactions initiated by individual investors, and the applicability of redemption fees will be determined based on the aggregate holdings and redemptions of the intermediary account or the conduit investment vehicle.

If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary or conduit investment vehicle may impose rules intended to limit short-term money movements in and out of the funds which differ from those described in this prospectus. In such cases, there may be redemption fees imposed by the intermediary or conduit investment vehicle on different terms (and subject to different exceptions) than those set forth above. Please consult your financial advisor or other intermediary for details.

Money Market Funds. The Board of AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and 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 Board 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 Board does 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; investors must perceive an investment in such funds as an alternative to cash, and must be able to purchase and redeem shares regularly and frequently.

THE AIM FUNDS

- 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.

- 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, there are no price arbitrage opportunities.

- Because the money market funds seek to maintain a constant net asset value, investors expect to receive upon redemption the amount they originally invested in such funds. Imposition of redemption fees would run contrary to investor expectations.

AIM Limited Maturity Treasury Fund. The Board of AIM Limited Maturity Treasury Fund has not adopted any policies and procedures that would limit frequent purchases and redemptions of such fund's shares. The Board 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 AIM Limited Maturity Treasury 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, AIM Limited Maturity Treasury Fund's yield could be negatively impacted.

The Board does not believe that it is appropriate to adopt any such policies and procedures for the fund for the following reasons:

- Many investors use AIM Limited Maturity Treasury Fund as a short-term investment alternative and should be able to purchase and redeem shares regularly and frequently.

- One of the advantages of AIM Limited Maturity Treasury Fund as compared to other investment options is liquidity. Any policy that diminishes the liquidity of AIM Limited Maturity Treasury Fund will be detrimental to the continuing operations of such fund.

TRADE ACTIVITY MONITORING

Invesco Aim 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 Aim 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 Aim Affiliates will use reasonable efforts to apply the fund's policies uniformly given the practical limitations described above.

The ability of Invesco Aim 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 severely limited or non-existent.

TRADING GUIDELINES

If you exceed four exchanges out of a fund per calendar year (other than the money market funds and AIM Limited Maturity Treasury Fund), or a fund or an Invesco Aim Affiliate determines, in its sole discretion, that your short-term trading activity is excessive (regardless of whether or not you exceed such guidelines), it may, in its discretion, reject any additional purchase and exchange orders.

The ability of Invesco Aim Affiliates to monitor exchanges made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent. If shares of the funds are held in the name of a conduit investment vehicle and not in the names of the individual investors who have invested in the funds through the conduit investment vehicle, the conduit investment vehicle may be considered an individual shareholder of the funds. To the extent that a conduit investment vehicle is considered an individual shareholder of the funds, the funds are likely to be limited in their ability to impose exchange limitations on individual transactions initiated by investors who have invested in the funds through the conduit investment vehicle.

REDEMPTION FEES

You may be charged a 2% redemption fee if you redeem, including redeeming by exchange, shares of certain funds within 31 days of purchase. The ability of a fund to assess a redemption fee on redemptions effectuated through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent.

FAIR VALUE PRICING

Securities owned by a fund 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. Fair value pricing may 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.

More information may be obtained free of charge upon request. The Statement of Additional Information (SAI), a current version of which is on file with the Securities and Exchange Commission (SEC), contains more details about the fund and is incorporated by reference into the prospectus (is legally a part of the prospectus). Annual and semiannual reports to shareholders contain additional information about the fund's investments. The fund's annual report also discusses the market conditions and investment strategies that significantly affected the fund's performance during its last fiscal year. The fund also files its complete schedule of portfolio holdings with the SEC for the 1st and 3rd quarters of each fiscal year on Form N-Q. The fund's most recent portfolio holdings, as filed on Form N-Q, are also available at http://www.invescoaim.com.

If you have questions about this fund, another fund in The AIM Family of Funds-- Registered Trademark-- or your account, or wish to obtain free copies of the fund's current SAI or annual or semiannual reports, please contact us by mail at Invesco Aim Investment Services, Inc., P.O. Box 4739, Houston, TX 77210-4739 or

BY TELEPHONE:        (800) 959-4246

ON THE INTERNET:     You can send us a request by e-mail or download prospectuses, SAIs,
                     annual or semiannual reports via our website: http://www.invescoaim.com

You can also review and obtain copies of the fund's SAI, financial reports, the fund's Forms N-Q and other information at the SEC's Public Reference Room in Washington, DC; on the EDGAR database on the SEC's Internet website (http://www.sec.gov); or, after paying a duplicating fee, by sending a letter to the SEC's Public Reference Section, Washington, DC 20549-0102 or by sending an electronic mail request to publicinfo@sec.gov. Please call the SEC at 1-202-942- 8090 for information about the Public Reference Room.

invescoaim.com  BVA-PRO-1

                                                 [INVESCO AIM LOGO APPEARS HERE]
                                                       --Service Mark--

                                                AIM CONSERVATIVE ALLOCATION FUND

                                                              ------------------
                                                                     PROSPECTUS
                                                              ------------------

                                                                October 3, 2008

AIM Conservative Allocation Fund's investment objective is to provide total return consistent with a lower level of risk relative to the broad stock market.

This prospectus contains important information about the Class A, B, C, R and Y shares of the fund. Please read it before investing and keep it for future reference.

As with all other mutual fund securities, the Securities and Exchange Commission has not approved or disapproved these securities or determined whether the information in this prospectus is adequate or accurate. Anyone who tells you otherwise is committing a crime.

An investment in the fund:
- is not FDIC insured;
- may lose value; and
- is not guaranteed by a bank.

RISK/RETURN SUMMARY                           1
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PERFORMANCE INFORMATION                       1
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Annual Total Returns                          1
Performance Table                             2
FEE TABLE AND EXPENSE EXAMPLE                 3
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Fee Table                                     3
Expense Example                               4
HYPOTHETICAL INVESTMENT AND EXPENSE
  INFORMATION                                 4
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INVESTMENT OBJECTIVE, STRATEGIES AND
  RISKS                                       5
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Objective and Strategies                      5
Risks                                         6
DISCLOSURE OF PORTFOLIO HOLDINGS              9
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FUND MANAGEMENT                               9
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The Advisors                                  9
Advisor Compensation                         10
Portfolio Manager                            10
OTHER INFORMATION                            10
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Sales Charges                                10
Dividends and Distributions                  11
FINANCIAL HIGHLIGHTS                         12
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GENERAL INFORMATION                         A-1
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Choosing a Share Class                      A-1
Share Class Eligibility                     A-2
Distribution and Service (12b-1) Fees       A-2
Initial Sales Charges (Class A Shares
  Only)                                     A-3
Contingent Deferred Sales Charges (CDSCs)   A-4
Redemption Fees                             A-6
Purchasing Shares                           A-6
Redeeming Shares                            A-8
Exchanging Shares                           A-9
Rights Reserved by the Funds               A-11
Pricing of Shares                          A-11
Taxes                                      A-13
Payments to Financial Advisors             A-13
Excessive Short-Term Trading Activity
  (Market Timing) Disclosures              A-14
OBTAINING ADDITIONAL INFORMATION     Back Cover
- - - - - - - - - - - - - - - - - - - - - - - - -

The AIM Family of Funds, AIM and Design, AIM, AIM Funds, AIM Funds and Design, AIM Investments, AIM Investor, AIM Lifetime America, AIM LINK, AIM Institutional Funds, aimfunds.com, La Familia AIM de Fondos, La Familia AIM de Fondos and Design, Invierta con DISCIPLINA, Invest with DISCIPLINE, The AIM College Savings Plan, AIM Solo 401(k), AIM Investments and Design and Your goals. Our solutions. are registered service marks and AIM Bank Connection, AIM Internet Connect, AIM Private Asset Management, AIM Private Asset Management and Design, AIM Stylized and/or Design, AIM Alternative Assets and Design and myaim.com are service marks of Invesco Aim Management Group, Inc. AIM Trimark is a registered service mark of Invesco Aim Management Group, Inc. and Invesco Trimark Ltd.

No dealer, salesperson or any other person has been authorized to give any information or to make any representations other than those contained in this prospectus, and you should not rely on such other information or representations.

The fund's investment objective is to provide total return consistent with a lower level of risk relative to the broad stock market.

The fund is a "fund of funds," and invests its assets in other underlying mutual funds advised by Invesco Aim Advisors, Inc. (the advisor or Invesco Aim). The fund seeks to meet its objective by building a portfolio of mutual fund investments that has a lower level of risk than the S&P 500 Index. The fund's target allocation is to invest 65% of its total assets in underlying funds that invest primarily in fixed-income securities, 25% of its total assets in underlying funds that invest primarily in equity securities, and 10% in cash or cash equivalents.

The fund's investment performance depends on the investment performance of the underlying funds in which it invests. Therefore, the risks associated with an investment in a fund of funds, such as the fund, are also the risks associated with an investment in the underlying funds.

Among the principal risks of investing in the fund and the underlying funds, which could adversely affect the fund's net asset value, yield and total return are:

Fund of Funds Risk                    Equity Securities Risk         Active Trading Risk            Non-Diversification Risk
Market Risk                           Foreign Securities Risk        Money Market Fund Risk         High Yield Risk
Interest Rate Risk                    Convertible Securities Risk    Value Investing Risk           Credit Risk
U.S. Government Obligations Risk      Derivatives Risk               Management Risk                Municipal Securities Risk
High-Coupon U.S. Government Agency    Leverage Risk                  Growth Investing Risk          Industry Focus Risk
  Mortgage-Backed Securities Risk     Repurchase Agreement Risk      Currency/Exchange Rate Risk    Dollar Roll Transaction Risk
Mortgage- and Asset-Backed            Prepayment Risk                Liquidity Risk
  Securities Risk

Please see "Investment Objective, Strategies and Risks" for a description of these risks.

There is a risk that you could lose all or a portion of your investment in the fund and that the income that you receive from the fund may vary. The value of your investment in the fund will go up and down with the prices of the securities held by the underlying funds in which the fund invests.

An investment in the fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

DETERMINATION OF NET ASSET VALUE

The price of each fund's shares is the fund's net asset value per share. The funds value portfolio securities for which market quotations are readily available at market value. The funds value all other securities and assets for which market quotations are unavailable or unreliable at their fair value in good faith using procedures approved by the Boards of Trustees of the funds (collectively, the Board). The Board has delegated the daily determination of good faith fair value methodologies to Invesco Aim's Valuation Committee, which acts in accordance with Board approved policies. On a quarterly basis, Invesco Aim provides the Board various reports indicating the quality and effectiveness of its fair value decisions on portfolio holdings. Securities and other assets quoted in foreign currencies are valued in U.S. dollars based on the prevailing exchange rates on that day.

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 which 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 market quotations are not readily available, including where Invesco Aim determines that the closing price of the security is unreliable, Invesco Aim will value the security at fair value in good faith using procedures approved by the Board. Fair value pricing may 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.

Fair value is that amount that the owner might reasonably expect to receive for the security upon its current sale. Fair value requires consideration of all appropriate factors, including indications of fair value available from pricing services. A fair value price is an estimated price and may vary from the prices used by other mutual funds to calculate their net asset values.

Invesco Aim may use indications of fair value from pricing services approved by the Board. In other circumstances, the Invesco Aim Valuation Committee may fair value securities in good faith using procedures approved by the Board. As a means of evaluating its fair value process, Invesco Aim routinely compares closing market prices, the next day's opening prices for the security in its primary market if available, and indications of fair value from other sources. Fair value pricing methods and pricing services can change from time to time as approved by the Board.

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, Invesco Aim 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 Invesco Aim determines, in its judgment, is likely to have affected the closing price of a foreign security, it will price the security at fair value. Invesco Aim 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 Invesco Aim believes, at the approved degree of certainty, that the price is not reflective of current market value, Invesco Aim 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.

THE AIM FUNDS

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. 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. 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 Invesco Aim valuation committee will fair value the security using procedures approved by the Board.

Short-term Securities. The funds' short-term investments are valued at amortized cost when the security has 60 days or less to maturity. AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio value all their securities at amortized cost. AIM High Income Municipal Fund, AIM Municipal Bond Fund and AIM Tax-Free Intermediate Fund 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.

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. To the extent 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.

Each fund 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. AIM Money Market Fund also determines its net asset value as of 12:00 noon Eastern Time on each business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio determine the net asset value of their shares every fifteen minutes on each business day, beginning at 8:00 a.m. Eastern Time. The last net asset value determination on any business day for Premier Portfolio and Premier U.S. Government Money Portfolio will generally occur at 5:30 p.m. Eastern Time, and the last net asset value determination on any business day for Premier Tax-Exempt Portfolio will generally occur at 4:30 p.m. Eastern Time. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio are authorized not to open for trading on a day that is otherwise a business day if the Federal Reserve Bank of New York and the Bank of New York, the fund's custodian, are not open for business or the Securities Industry and Financial Markets Association (SIFMA) recommends that government securities dealers not open for trading and any such day will not be considered a business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio also may close early on a business day if SIFMA recommends that government securities dealers close early. If Premier Portfolio, Premier Tax-Exempt Portfolio or Premier U.S. Government Money Portfolio uses its discretion to close early on a business day, the last net asset value calculation will occur as of the time of such closing.

From time to time and in circumstances deemed appropriate by Invesco Aim in its sole discretion, each of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio may remain open for business, during customary business day hours, on a day that the NYSE is closed for business. In such event, on such day you will be permitted to purchase or redeem shares of such funds and net asset values will be calculated for such funds.

TIMING OF ORDERS

For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day prior to the close of the customary trading session or any earlier NYSE closing time that day. For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, purchase orders that are received and accepted before the close of the customary trading session or any earlier NYSE closing time on a business day generally are processed that day and settled on the next business day.

For Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day, prior to the last net asset value determination on such business day; however, if your order is received and accepted after the close of the customary trading session or any earlier NYSE closing time that day, your order generally will be processed on the next business day and settled on the second business day following the receipt and acceptance of your order.

For all funds, you can exchange shares on each business day, prior to the close of the customary trading session or any earlier NYSE closing time that day. Shareholders of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio therefore cannot exchange their shares after the close of the customary trading session or any earlier NYSE closing time on a particular day, even though these funds remain open after such closing time.

The funds price purchase, exchange and redemption orders at the net asset value calculated after the transfer agent receives an order in good order. Any applicable sales charges are applied at the time an order is processed. A fund may postpone the right of redemption only under unusual circumstances, as allowed by the Securities and Exchange Commission, such as when the NYSE restricts or suspends trading.

THE AIM FUNDS

TAXES

In general, if you are a taxable investor, dividends and distributions you receive are taxable as ordinary income or long-term capital gains for federal income tax purposes. This is true 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 each fund during the prior year. Investors should read the information under the heading "Other Information--Special Tax Information Regarding the Fund" where applicable in the fund's prospectus. In addition, investors in taxable accounts should be aware of the following basic tax points:

- Distributions of net short-term capital gains are taxable to you as ordinary income. A fund that is expected to have higher turnover than that of other funds is more likely to generate short-term gain or loss.

- 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.

- If you are an individual and meet certain holding period requirements, a portion of income dividends paid by a fund may be designated as qualified dividend income eligible for taxation at long-term capital gain rates. These reduced rates generally are available for dividends paid by a fund out of dividends earned on the 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.

- 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 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.

- If you invest in a fund shortly before it makes a capital gains distribution, the distribution will lower the value of the fund's shares by the amount of the distribution and, in effect, you will receive some of your investment back in the form of a taxable distribution. This is sometimes referred to as "buying a dividend."

- 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 28% of any distributions or proceeds paid.

- 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 as a foreign tax credit. 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.

The preceding discussion concerning the taxability of fund dividends and distributions and of redemptions and exchanges of fund shares is inapplicable to investors that are generally exempt from federal income tax, such as retirement plans that are qualified under Section 401, 403, 408, 408A and 457 of the Code, individual retirement accounts (IRAs) and Roth IRAs. You should consult your tax advisor before investing in a fund.

PAYMENTS TO FINANCIAL ADVISORS

The financial advisor 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 Aim Distributors or one or more of its corporate affiliates (collectively, Invesco Aim Affiliates) may make additional cash payments to financial advisors 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 Aim Affiliates make these payments from their own resources, from Invesco Aim Distributors' retention of initial sales charges and from payments to Invesco Aim Distributors made by the funds under their 12b-1 plans. In this context, "financial advisors" include any broker, dealer, bank (including bank trust departments), registered investment advisor, financial planner, retirement plan administrator and any other financial intermediary having a selling, administration or similar agreement with Invesco Aim Affiliates.

Invesco Aim Affiliates make payments as incentives to certain financial advisors to promote and sell shares of the funds. The benefits Invesco Aim Affiliates receive when they make these payments include, among other things, placing the funds on the financial advisor's funds sales system, and access (in some cases on a preferential basis over other competitors) to individual members of the financial advisor's sales force or to the financial advisor's management. These payments are sometimes referred to as "shelf space" payments because the payments compensate the financial advisor for including the funds in its fund sales system (on its "sales shelf"). Invesco Aim Affiliates compensate financial advisors differently depending typically on the level and/or type of considerations provided by the financial advisor. The payments Invesco Aim 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% of the public offering price of all shares sold by the financial advisor 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 advisor (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 AIM FUNDS

the funds and Asset-Based Payments primarily create incentives to retain previously sold shares of the funds in investor accounts. Invesco Aim Affiliates may pay a financial advisor either or both Sales-Based Payments and Asset-Based Payments.

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

Invesco Aim Affiliates also may make payments to certain financial advisors 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 Aim 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 Statement of Additional Information about these payments and the services provided by financial advisors. In certain cases these payments could be significant to the financial advisor. Your financial advisor may charge you additional fees or commissions other than those disclosed in this prospectus. You can ask your financial advisor about any payments it receives from Invesco Aim Affiliates or the funds, as well as about fees and/or commissions it charges.

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. 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 advisor believes the change would be in the best interests of long-term shareholders.

The Invesco Aim Affiliates currently use the following tools designed to discourage excessive short-term trading in the retail funds:

- Trade activity monitoring.

- Trading guidelines.

- Redemption fees on trades in certain funds.

- 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 Aim 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.

Some investments in the funds are made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and some investments are made indirectly through products that use the funds as underlying investments, such as employee benefit plans, funds of funds, qualified tuition plans, and variable insurance contracts (these products are generally referred to as conduit investment vehicles). If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary account or conduit investment vehicle may be considered an individual shareholder of the funds for purposes of assessing redemption fees. In these cases, the funds are likely to be limited in their ability to assess redemption fees on transactions initiated by individual investors, and the applicability of redemption fees will be determined based on the aggregate holdings and redemptions of the intermediary account or the conduit investment vehicle.

If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary or conduit investment vehicle may impose rules intended to limit short-term money movements in and out of the funds which differ from those described in this prospectus. In such cases, there may be redemption fees imposed by the intermediary or conduit investment vehicle on different terms (and subject to different exceptions) than those set forth above. Please consult your financial advisor or other intermediary for details.

Money Market Funds. The Board of AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and 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 Board 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 Board does 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; investors must perceive an investment in such funds as an alternative to cash, and must be able to purchase and redeem shares regularly and frequently.

THE AIM FUNDS

- 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.

- 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, there are no price arbitrage opportunities.

- Because the money market funds seek to maintain a constant net asset value, investors expect to receive upon redemption the amount they originally invested in such funds. Imposition of redemption fees would run contrary to investor expectations.

AIM Limited Maturity Treasury Fund. The Board of AIM Limited Maturity Treasury Fund has not adopted any policies and procedures that would limit frequent purchases and redemptions of such fund's shares. The Board 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 AIM Limited Maturity Treasury 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, AIM Limited Maturity Treasury Fund's yield could be negatively impacted.

The Board does not believe that it is appropriate to adopt any such policies and procedures for the fund for the following reasons:

- Many investors use AIM Limited Maturity Treasury Fund as a short-term investment alternative and should be able to purchase and redeem shares regularly and frequently.

- One of the advantages of AIM Limited Maturity Treasury Fund as compared to other investment options is liquidity. Any policy that diminishes the liquidity of AIM Limited Maturity Treasury Fund will be detrimental to the continuing operations of such fund.

TRADE ACTIVITY MONITORING

Invesco Aim 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 Aim 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 Aim Affiliates will use reasonable efforts to apply the fund's policies uniformly given the practical limitations described above.

The ability of Invesco Aim 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 severely limited or non-existent.

TRADING GUIDELINES

If you exceed four exchanges out of a fund per calendar year (other than the money market funds and AIM Limited Maturity Treasury Fund), or a fund or an Invesco Aim Affiliate determines, in its sole discretion, that your short-term trading activity is excessive (regardless of whether or not you exceed such guidelines), it may, in its discretion, reject any additional purchase and exchange orders.

The ability of Invesco Aim Affiliates to monitor exchanges made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent. If shares of the funds are held in the name of a conduit investment vehicle and not in the names of the individual investors who have invested in the funds through the conduit investment vehicle, the conduit investment vehicle may be considered an individual shareholder of the funds. To the extent that a conduit investment vehicle is considered an individual shareholder of the funds, the funds are likely to be limited in their ability to impose exchange limitations on individual transactions initiated by investors who have invested in the funds through the conduit investment vehicle.

REDEMPTION FEES

You may be charged a 2% redemption fee if you redeem, including redeeming by exchange, shares of certain funds within 31 days of purchase. The ability of a fund to assess a redemption fee on redemptions effectuated through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent.

FAIR VALUE PRICING

Securities owned by a fund 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. Fair value pricing may 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.

More information may be obtained free of charge upon request. The Statement of Additional Information (SAI), a current version of which is on file with the Securities and Exchange Commission (SEC), contains more details about the fund and is incorporated by reference into the prospectus (is legally a part of the prospectus). Annual and semiannual reports to shareholders contain additional information about the fund's investments. The fund's annual report also discusses the market conditions and investment strategies that significantly affected the fund's performance during its last fiscal year. The fund also files its complete schedule of portfolio holdings with the SEC for the 1st and 3rd quarters of each fiscal year on Form N-Q. The fund's most recent portfolio holdings, as filed on Form N-Q, are also available at http://www.invescoaim.com.

If you have questions about this fund, another fund in The AIM Family of Funds-- Registered Trademark-- or your account, or wish to obtain free copies of the fund's current SAI or annual or semiannual reports, please contact us by mail at Invesco Aim Investment Services, Inc., P.O. Box 4739, Houston, TX 77210-4739 or

BY TELEPHONE:        (800) 959-4246

ON THE INTERNET:     You can send us a request by e-mail or download prospectuses, SAIs,
                     annual or semiannual reports via our website: http://www.invescoaim.com

You can also review and obtain copies of the fund's SAI, financial reports, the fund's Forms N-Q and other information at the SEC's Public Reference Room in Washington, DC; on the EDGAR database on the SEC's Internet website (http://www.sec.gov); or, after paying a duplicating fee, by sending a letter to the SEC's Public Reference Section, Washington, DC 20549-0102 or by sending an electronic mail request to publicinfo@sec.gov. Please call the SEC at 1-202-942- 8090 for information about the Public Reference Room.

invescoaim.com  CAL-PRO-1

                                                 [INVESCO AIM LOGO APPEARS HERE]
                                                       --Service Mark--

                                                          AIM GLOBAL EQUITY FUND

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                                                                     PROSPECTUS
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                                                                October 3, 2008

AIM Global Equity Fund's investment objective is long-term growth of capital.

This prospectus contains important information about the Class A, B, C, R and Y shares of the fund. Please read it before investing and keep it for future reference.

As with all other mutual fund securities, the Securities and Exchange Commission has not approved or disapproved these securities or determined whether the information in this prospectus is adequate or accurate. Anyone who tells you otherwise is committing a crime.

An investment in the fund:
- is not FDIC insured;
- may lose value; and
- is not guaranteed by a bank.

RISK/RETURN SUMMARY                           1
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PERFORMANCE INFORMATION                       1
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Annual Total Returns                          1
Performance Table                             2
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FEE TABLE AND EXPENSE EXAMPLE                 3
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Fee Table                                     3
Expense Example                               3
HYPOTHETICAL INVESTMENT AND EXPENSE
  INFORMATION                                 4
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INVESTMENT OBJECTIVE, STRATEGIES AND
  RISKS                                       5
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Objective and Strategies                      5
Risks                                         6
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DISCLOSURE OF PORTFOLIO HOLDINGS              7
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FUND MANAGEMENT                               7
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The Advisors                                  7
Advisor Compensation                          8
Portfolio Managers                            8
OTHER INFORMATION                             8
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Sales Charges                                 8
Dividends and Distributions                   8
FINANCIAL HIGHLIGHTS                          9
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GENERAL INFORMATION                         A-1
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Choosing a Share Class                      A-1
Share Class Eligibility                     A-2
Distribution and Service (12b-1) Fees       A-2
Initial Sales Charges (Class A Shares
  Only)                                     A-3
Contingent Deferred Sales Charges (CDSCs)   A-4
Redemption Fees                             A-6
Purchasing Shares                           A-6
Redeeming Shares                            A-8
Exchanging Shares                           A-9
Rights Reserved by the Funds               A-11
Pricing of Shares                          A-11
Taxes                                      A-13
Payments to Financial Advisors             A-13
Excessive Short-Term Trading Activity
  (Market Timing) Disclosures              A-14
OBTAINING ADDITIONAL INFORMATION     Back Cover
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The AIM Family of Funds, AIM and Design, AIM, AIM Funds, AIM Funds and Design, AIM Investments, AIM Investor, AIM Lifetime America, AIM LINK, AIM Institutional Funds, aimfunds.com, La Familia AIM de Fondos, La Familia AIM de Fondos and Design, Invierta con DISCIPLINA, Invest with DISCIPLINE, The AIM College Savings Plan, AIM Solo 401(k), AIM Investments and Design and Your goals. Our solutions. are registered service marks and AIM Bank Connection, AIM Internet Connect, AIM Private Asset Management, AIM Private Asset Management and Design, AIM Stylized and/or Design, AIM Alternative Assets and Design and myaim.com are service marks of Invesco Aim Management Group, Inc. AIM Trimark is a registered service mark of Invesco Aim Management Group, Inc. and Invesco Trimark Ltd.

No dealer, salesperson or any other person has been authorized to give any information or to make any representations other than those contained in this prospectus, and you should not rely on such other information or representations.

The fund's investment objective is long-term growth of capital.

The fund seeks to meets its objective by investing, normally, at least 80% of its assets in equity securities of domestic and foreign issuers. The portfolio managers use quantitative, research based models to select potential investment securities. They then use proprietary and/or non-proprietary computer models to forecast risks and transaction costs. The information gathered from this process is used to structure the investment portfolio.

The fund uses the MSCI World Index as a guide in structuring the portfolio and selecting securities, but the fund is not an index fund and will invest in securities not included in the index.

The principal type of equity securities purchased by the fund is common stock.

The fund may invest up to 20% of its total assets in securities of companies located in developing countries, i.e., those that are in the initial stages of their industrial cycle. The fund may also invest up to 20% of its net assets in debt securities of U.S. and foreign issuers.

The fund may also invest in derivative instruments such as futures contracts and equity linked derivatives.

Among the principal risks of investing in the fund, which could adversely affect its net asset value, yield and total return are:

Market Risk                Interest Rate Risk    Leverage Risk                  Management Risk
Equity Securities Risk     Credit Risk           Currency/Exchange Rate Risk
Foreign Securities Risk    Derivatives Risk      Active Trading Risk

Please see "Investment Objective, Strategies and Risks" for a description of these risks.

There is a risk that you could lose all or a portion of your investment in the fund and that the income you may receive from your investment may vary. There is a risk that you could lose all or a portion of your investment in the fund and that the income you may receive from your investment may vary. The value of your investment in the fund will rise and fall with the prices of the securities in which the fund invests.

An investment in the fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

DETERMINATION OF NET ASSET VALUE

The price of each fund's shares is the fund's net asset value per share. The funds value portfolio securities for which market quotations are readily available at market value. The funds value all other securities and assets for which market quotations are unavailable or unreliable at their fair value in good faith using procedures approved by the Boards of Trustees of the funds (collectively, the Board). The Board has delegated the daily determination of good faith fair value methodologies to Invesco Aim's Valuation Committee, which acts in accordance with Board approved policies. On a quarterly basis, Invesco Aim provides the Board various reports indicating the quality and effectiveness of its fair value decisions on portfolio holdings. Securities and other assets quoted in foreign currencies are valued in U.S. dollars based on the prevailing exchange rates on that day.

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 which 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 market quotations are not readily available, including where Invesco Aim determines that the closing price of the security is unreliable, Invesco Aim will value the security at fair value in good faith using procedures approved by the Board. Fair value pricing may 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.

Fair value is that amount that the owner might reasonably expect to receive for the security upon its current sale. Fair value requires consideration of all appropriate factors, including indications of fair value available from pricing services. A fair value price is an estimated price and may vary from the prices used by other mutual funds to calculate their net asset values.

Invesco Aim may use indications of fair value from pricing services approved by the Board. In other circumstances, the Invesco Aim Valuation Committee may fair value securities in good faith using procedures approved by the Board. As a means of evaluating its fair value process, Invesco Aim routinely compares closing market prices, the next day's opening prices for the security in its primary market if available, and indications of fair value from other sources. Fair value pricing methods and pricing services can change from time to time as approved by the Board.

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, Invesco Aim 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 Invesco Aim determines, in its judgment, is likely to have affected the closing price of a foreign security, it will price the security at fair value. Invesco Aim 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 Invesco Aim believes, at the approved degree of certainty, that the price is not reflective of current market value, Invesco Aim 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.

THE AIM FUNDS

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. 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. 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 Invesco Aim valuation committee will fair value the security using procedures approved by the Board.

Short-term Securities. The funds' short-term investments are valued at amortized cost when the security has 60 days or less to maturity. AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio value all their securities at amortized cost. AIM High Income Municipal Fund, AIM Municipal Bond Fund and AIM Tax-Free Intermediate Fund 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.

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. To the extent 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.

Each fund 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. AIM Money Market Fund also determines its net asset value as of 12:00 noon Eastern Time on each business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio determine the net asset value of their shares every fifteen minutes on each business day, beginning at 8:00 a.m. Eastern Time. The last net asset value determination on any business day for Premier Portfolio and Premier U.S. Government Money Portfolio will generally occur at 5:30 p.m. Eastern Time, and the last net asset value determination on any business day for Premier Tax-Exempt Portfolio will generally occur at 4:30 p.m. Eastern Time. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio are authorized not to open for trading on a day that is otherwise a business day if the Federal Reserve Bank of New York and the Bank of New York, the fund's custodian, are not open for business or the Securities Industry and Financial Markets Association (SIFMA) recommends that government securities dealers not open for trading and any such day will not be considered a business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio also may close early on a business day if SIFMA recommends that government securities dealers close early. If Premier Portfolio, Premier Tax-Exempt Portfolio or Premier U.S. Government Money Portfolio uses its discretion to close early on a business day, the last net asset value calculation will occur as of the time of such closing.

From time to time and in circumstances deemed appropriate by Invesco Aim in its sole discretion, each of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio may remain open for business, during customary business day hours, on a day that the NYSE is closed for business. In such event, on such day you will be permitted to purchase or redeem shares of such funds and net asset values will be calculated for such funds.

TIMING OF ORDERS

For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day prior to the close of the customary trading session or any earlier NYSE closing time that day. For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, purchase orders that are received and accepted before the close of the customary trading session or any earlier NYSE closing time on a business day generally are processed that day and settled on the next business day.

For Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day, prior to the last net asset value determination on such business day; however, if your order is received and accepted after the close of the customary trading session or any earlier NYSE closing time that day, your order generally will be processed on the next business day and settled on the second business day following the receipt and acceptance of your order.

For all funds, you can exchange shares on each business day, prior to the close of the customary trading session or any earlier NYSE closing time that day. Shareholders of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio therefore cannot exchange their shares after the close of the customary trading session or any earlier NYSE closing time on a particular day, even though these funds remain open after such closing time.

The funds price purchase, exchange and redemption orders at the net asset value calculated after the transfer agent receives an order in good order. Any applicable sales charges are applied at the time an order is processed. A fund may postpone the right of redemption only under unusual circumstances, as allowed by the Securities and Exchange Commission, such as when the NYSE restricts or suspends trading.

THE AIM FUNDS

TAXES

In general, if you are a taxable investor, dividends and distributions you receive are taxable as ordinary income or long-term capital gains for federal income tax purposes. This is true 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 each fund during the prior year. Investors should read the information under the heading "Other Information--Special Tax Information Regarding the Fund" where applicable in the fund's prospectus. In addition, investors in taxable accounts should be aware of the following basic tax points:

- Distributions of net short-term capital gains are taxable to you as ordinary income. A fund that is expected to have higher turnover than that of other funds is more likely to generate short-term gain or loss.

- 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.

- If you are an individual and meet certain holding period requirements, a portion of income dividends paid by a fund may be designated as qualified dividend income eligible for taxation at long-term capital gain rates. These reduced rates generally are available for dividends paid by a fund out of dividends earned on the 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.

- 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 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.

- If you invest in a fund shortly before it makes a capital gains distribution, the distribution will lower the value of the fund's shares by the amount of the distribution and, in effect, you will receive some of your investment back in the form of a taxable distribution. This is sometimes referred to as "buying a dividend."

- 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 28% of any distributions or proceeds paid.

- 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 as a foreign tax credit. 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.

The preceding discussion concerning the taxability of fund dividends and distributions and of redemptions and exchanges of fund shares is inapplicable to investors that are generally exempt from federal income tax, such as retirement plans that are qualified under Section 401, 403, 408, 408A and 457 of the Code, individual retirement accounts (IRAs) and Roth IRAs. You should consult your tax advisor before investing in a fund.

PAYMENTS TO FINANCIAL ADVISORS

The financial advisor 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 Aim Distributors or one or more of its corporate affiliates (collectively, Invesco Aim Affiliates) may make additional cash payments to financial advisors 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 Aim Affiliates make these payments from their own resources, from Invesco Aim Distributors' retention of initial sales charges and from payments to Invesco Aim Distributors made by the funds under their 12b-1 plans. In this context, "financial advisors" include any broker, dealer, bank (including bank trust departments), registered investment advisor, financial planner, retirement plan administrator and any other financial intermediary having a selling, administration or similar agreement with Invesco Aim Affiliates.

Invesco Aim Affiliates make payments as incentives to certain financial advisors to promote and sell shares of the funds. The benefits Invesco Aim Affiliates receive when they make these payments include, among other things, placing the funds on the financial advisor's funds sales system, and access (in some cases on a preferential basis over other competitors) to individual members of the financial advisor's sales force or to the financial advisor's management. These payments are sometimes referred to as "shelf space" payments because the payments compensate the financial advisor for including the funds in its fund sales system (on its "sales shelf"). Invesco Aim Affiliates compensate financial advisors differently depending typically on the level and/or type of considerations provided by the financial advisor. The payments Invesco Aim 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% of the public offering price of all shares sold by the financial advisor 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 advisor (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 AIM FUNDS

the funds and Asset-Based Payments primarily create incentives to retain previously sold shares of the funds in investor accounts. Invesco Aim Affiliates may pay a financial advisor either or both Sales-Based Payments and Asset-Based Payments.

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

Invesco Aim Affiliates also may make payments to certain financial advisors 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 Aim 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 Statement of Additional Information about these payments and the services provided by financial advisors. In certain cases these payments could be significant to the financial advisor. Your financial advisor may charge you additional fees or commissions other than those disclosed in this prospectus. You can ask your financial advisor about any payments it receives from Invesco Aim Affiliates or the funds, as well as about fees and/or commissions it charges.

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. 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 advisor believes the change would be in the best interests of long-term shareholders.

The Invesco Aim Affiliates currently use the following tools designed to discourage excessive short-term trading in the retail funds:

- Trade activity monitoring.

- Trading guidelines.

- Redemption fees on trades in certain funds.

- 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 Aim 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.

Some investments in the funds are made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and some investments are made indirectly through products that use the funds as underlying investments, such as employee benefit plans, funds of funds, qualified tuition plans, and variable insurance contracts (these products are generally referred to as conduit investment vehicles). If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary account or conduit investment vehicle may be considered an individual shareholder of the funds for purposes of assessing redemption fees. In these cases, the funds are likely to be limited in their ability to assess redemption fees on transactions initiated by individual investors, and the applicability of redemption fees will be determined based on the aggregate holdings and redemptions of the intermediary account or the conduit investment vehicle.

If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary or conduit investment vehicle may impose rules intended to limit short-term money movements in and out of the funds which differ from those described in this prospectus. In such cases, there may be redemption fees imposed by the intermediary or conduit investment vehicle on different terms (and subject to different exceptions) than those set forth above. Please consult your financial advisor or other intermediary for details.

Money Market Funds. The Board of AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and 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 Board 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 Board does 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; investors must perceive an investment in such funds as an alternative to cash, and must be able to purchase and redeem shares regularly and frequently.

THE AIM FUNDS

- 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.

- 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, there are no price arbitrage opportunities.

- Because the money market funds seek to maintain a constant net asset value, investors expect to receive upon redemption the amount they originally invested in such funds. Imposition of redemption fees would run contrary to investor expectations.

AIM Limited Maturity Treasury Fund. The Board of AIM Limited Maturity Treasury Fund has not adopted any policies and procedures that would limit frequent purchases and redemptions of such fund's shares. The Board 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 AIM Limited Maturity Treasury 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, AIM Limited Maturity Treasury Fund's yield could be negatively impacted.

The Board does not believe that it is appropriate to adopt any such policies and procedures for the fund for the following reasons:

- Many investors use AIM Limited Maturity Treasury Fund as a short-term investment alternative and should be able to purchase and redeem shares regularly and frequently.

- One of the advantages of AIM Limited Maturity Treasury Fund as compared to other investment options is liquidity. Any policy that diminishes the liquidity of AIM Limited Maturity Treasury Fund will be detrimental to the continuing operations of such fund.

TRADE ACTIVITY MONITORING

Invesco Aim 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 Aim 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 Aim Affiliates will use reasonable efforts to apply the fund's policies uniformly given the practical limitations described above.

The ability of Invesco Aim 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 severely limited or non-existent.

TRADING GUIDELINES

If you exceed four exchanges out of a fund per calendar year (other than the money market funds and AIM Limited Maturity Treasury Fund), or a fund or an Invesco Aim Affiliate determines, in its sole discretion, that your short-term trading activity is excessive (regardless of whether or not you exceed such guidelines), it may, in its discretion, reject any additional purchase and exchange orders.

The ability of Invesco Aim Affiliates to monitor exchanges made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent. If shares of the funds are held in the name of a conduit investment vehicle and not in the names of the individual investors who have invested in the funds through the conduit investment vehicle, the conduit investment vehicle may be considered an individual shareholder of the funds. To the extent that a conduit investment vehicle is considered an individual shareholder of the funds, the funds are likely to be limited in their ability to impose exchange limitations on individual transactions initiated by investors who have invested in the funds through the conduit investment vehicle.

REDEMPTION FEES

You may be charged a 2% redemption fee if you redeem, including redeeming by exchange, shares of certain funds within 31 days of purchase. The ability of a fund to assess a redemption fee on redemptions effectuated through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent.

FAIR VALUE PRICING

Securities owned by a fund 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. Fair value pricing may 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.

More information may be obtained free of charge upon request. The Statement of Additional Information (SAI), a current version of which is on file with the Securities and Exchange Commission (SEC), contains more details about the fund and is incorporated by reference into the prospectus (is legally a part of the prospectus). Annual and semiannual reports to shareholders contain additional information about the fund's investments. The fund's annual report also discusses the market conditions and investment strategies that significantly affected the fund's performance during its last fiscal year. The fund also files its complete schedule of portfolio holdings with the SEC for the 1st and 3rd quarters of each fiscal year on Form N-Q. The fund's most recent portfolio holdings, as filed on Form N-Q, are also available at http://www.invescoaim.com.

If you have questions about this fund, another fund in The AIM Family of Funds-- Registered Trademark-- or your account, or wish to obtain free copies of the fund's current SAI or annual or semiannual reports, please contact us by mail at Invesco Aim Investment Services, Inc., P.O. Box 4739, Houston, TX 77210-4739 or

BY TELEPHONE:        (800) 959-4246

ON THE INTERNET:     You can send us a request by e-mail or download prospectuses, SAIs,
                     annual or semiannual reports via our website: http://www.invescoaim.com

You can also review and obtain copies of the fund's SAI, financial reports, the fund's Forms N-Q and other information at the SEC's Public Reference Room in Washington, DC; on the EDGAR database on the SEC's Internet website (http://www.sec.gov); or, after paying a duplicating fee, by sending a letter to the SEC's Public Reference Section, Washington, DC 20549-0102 or by sending an electronic mail request to publicinfo@sec.gov. Please call the SEC at 1-202-942- 8090 for information about the Public Reference Room.

invescoaim.com  GEQ-PRO-1

                                                 [INVESCO AIM LOGO APPEARS HERE]
                                                       --Service Mark--

                                                      AIM GROWTH ALLOCATION FUND

                                                              ------------------
                                                                     PROSPECTUS
                                                              ------------------

                                                                October 3, 2008

AIM Growth Allocation Fund's investment objective is to provide long-term growth of capital consistent with a higher level of risk relative to the broad stock market.

This prospectus contains important information about the Class A, B, C, R and Y shares of the fund. Please read it before investing and keep it for future reference.

As with all other mutual fund securities, the Securities and Exchange Commission has not approved or disapproved these securities or determined whether the information in this prospectus is adequate or accurate. Anyone who tells you otherwise is committing a crime.

An investment in the fund:
- is not FDIC insured;
- may lose value; and
- is not guaranteed by a bank.

RISK/RETURN SUMMARY                             1
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PERFORMANCE INFORMATION                         1
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Annual Total Returns                            1
Performance Table                               2
FEE TABLE AND EXPENSE EXAMPLE                   3
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Fee Table                                       3
Expense Example                                 4
HYPOTHETICAL INVESTMENT AND EXPENSE
  INFORMATION                                   4
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INVESTMENT OBJECTIVE, STRATEGIES AND
  RISKS                                         5
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Objective and Strategies                        5
Risks                                           6
DISCLOSURE OF PORTFOLIO HOLDINGS                8
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FUND MANAGEMENT                                 8
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The Advisors                                    8
Advisor Compensation                            9
Portfolio Manager                               9
OTHER INFORMATION                              10
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Sales Charges                                  10
Dividends and Distributions                    10
FINANCIAL HIGHLIGHTS                           11
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GENERAL INFORMATION                           A-1
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Choosing a Share Class                        A-1
Share Class Eligibility                       A-2
Distribution and Service (12b-1) Fees         A-2
Initial Sales Charges (Class A Shares
  Only)                                       A-3
Contingent Deferred Sales Charges
  (CDSCs)                                     A-4
Redemption Fees                               A-6
Purchasing Shares                             A-6
Redeeming Shares                              A-8
Exchanging Shares                             A-9
Rights Reserved by the Funds                 A-11
Pricing of Shares                            A-11
Taxes                                        A-13
Payments to Financial Advisors               A-13
Excessive Short-Term Trading Activity
  (Market Timing) Disclosures                A-14
OBTAINING ADDITIONAL INFORMATION       Back Cover
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The AIM Family of Funds, AIM and Design, AIM, AIM Funds, AIM Funds and Design, AIM Investments, AIM Investor, AIM Lifetime America, AIM LINK, AIM Institutional Funds, aimfunds.com, La Familia AIM de Fondos, La Familia AIM de Fondos and Design, Invierta con DISCIPLINA, Invest with DISCIPLINE, The AIM College Savings Plan, AIM Solo 401(k), AIM Investments and Design and Your goals. Our solutions. are registered service marks and AIM Bank Connection, AIM Internet Connect, AIM Private Asset Management, AIM Private Asset Management and Design, AIM Stylized and/or Design, AIM Alternative Assets and Design and myaim.com are service marks of Invesco Aim Management Group, Inc. AIM Trimark is a registered service mark of Invesco Aim Management Group, Inc. and Invesco Trimark Ltd.

No dealer, salesperson or any other person has been authorized to give any information or to make any representations other than those contained in this prospectus, and you should not rely on such other information or representations.

The fund's investment objective is to provide long-term growth of capital consistent with a higher level of risk relative to the broad stock market.

The fund is a "fund of funds," and invests its assets in other underlying mutual funds advised by Invesco Aim Advisors, Inc. (the advisor or Invesco Aim). The fund seeks to meet its objective by building a portfolio of mutual fund investments that has a higher level of risk than the S&P 500 Index. The fund's target allocation is to invest 95% of its total assets in underlying funds that invest primarily in equity securities, including underlying funds that invest primarily in foreign equity securities, and 5% of its total assets in underlying funds that invest primarily in fixed-income securities.

The fund's investment performance depends on the investment performance of the underlying funds in which it invests. Therefore, the risks associated with an investment in a fund of funds, such as the fund, are also the risks associated with an investment in the underlying funds.

Among the principal risks of investing in the fund and the underlying funds, which could adversely affect the fund's net asset value, yield and total return are:

Fund of Funds Risk      Convertible Securities  Derivatives Risk        Management Risk         Sector Fund Risk
Market Risk             Risk                    Leverage Risk           Value Investing Risk    Unseasoned Issuer Risk
Equity Securities Risk  Interest Rate Risk      Active Trading Risk     U.S. Government         Independent Management
Foreign Securities      Credit Risk             Growth Investing Risk   Obligations Risk          of Sector Risk
Risk                    High Yield Risk                                 Market Capitalization
Counterparty Risk       Limited Number of                               Risk
                        Holdings Risk

Please see "Investment Objective, Strategies and Risks" for a description of these risks.

There is a risk that you could lose all or a portion of your investment in the fund and that the income that you receive from the fund may vary. The value of your investment in the fund will go up and down with the prices of the securities held by the underlying funds in which the fund invests.

An investment in the fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

DETERMINATION OF NET ASSET VALUE

The price of each fund's shares is the fund's net asset value per share. The funds value portfolio securities for which market quotations are readily available at market value. The funds value all other securities and assets for which market quotations are unavailable or unreliable at their fair value in good faith using procedures approved by the Boards of Trustees of the funds (collectively, the Board). The Board has delegated the daily determination of good faith fair value methodologies to Invesco Aim's Valuation Committee, which acts in accordance with Board approved policies. On a quarterly basis, Invesco Aim provides the Board various reports indicating the quality and effectiveness of its fair value decisions on portfolio holdings. Securities and other assets quoted in foreign currencies are valued in U.S. dollars based on the prevailing exchange rates on that day.

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 which 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 market quotations are not readily available, including where Invesco Aim determines that the closing price of the security is unreliable, Invesco Aim will value the security at fair value in good faith using procedures approved by the Board. Fair value pricing may 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.

Fair value is that amount that the owner might reasonably expect to receive for the security upon its current sale. Fair value requires consideration of all appropriate factors, including indications of fair value available from pricing services. A fair value price is an estimated price and may vary from the prices used by other mutual funds to calculate their net asset values.

Invesco Aim may use indications of fair value from pricing services approved by the Board. In other circumstances, the Invesco Aim Valuation Committee may fair value securities in good faith using procedures approved by the Board. As a means of evaluating its fair value process, Invesco Aim routinely compares closing market prices, the next day's opening prices for the security in its primary market if available, and indications of fair value from other sources. Fair value pricing methods and pricing services can change from time to time as approved by the Board.

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, Invesco Aim 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 Invesco Aim determines, in its judgment, is likely to have affected the closing price of a foreign security, it will price the security at fair value. Invesco Aim 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 Invesco Aim believes, at the approved degree of certainty, that the price is not reflective of current market value, Invesco Aim 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.

THE AIM FUNDS

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. 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. 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 Invesco Aim valuation committee will fair value the security using procedures approved by the Board.

Short-term Securities. The funds' short-term investments are valued at amortized cost when the security has 60 days or less to maturity. AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio value all their securities at amortized cost. AIM High Income Municipal Fund, AIM Municipal Bond Fund and AIM Tax-Free Intermediate Fund 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.

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. To the extent 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.

Each fund 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. AIM Money Market Fund also determines its net asset value as of 12:00 noon Eastern Time on each business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio determine the net asset value of their shares every fifteen minutes on each business day, beginning at 8:00 a.m. Eastern Time. The last net asset value determination on any business day for Premier Portfolio and Premier U.S. Government Money Portfolio will generally occur at 5:30 p.m. Eastern Time, and the last net asset value determination on any business day for Premier Tax-Exempt Portfolio will generally occur at 4:30 p.m. Eastern Time. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio are authorized not to open for trading on a day that is otherwise a business day if the Federal Reserve Bank of New York and the Bank of New York, the fund's custodian, are not open for business or the Securities Industry and Financial Markets Association (SIFMA) recommends that government securities dealers not open for trading and any such day will not be considered a business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio also may close early on a business day if SIFMA recommends that government securities dealers close early. If Premier Portfolio, Premier Tax-Exempt Portfolio or Premier U.S. Government Money Portfolio uses its discretion to close early on a business day, the last net asset value calculation will occur as of the time of such closing.

From time to time and in circumstances deemed appropriate by Invesco Aim in its sole discretion, each of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio may remain open for business, during customary business day hours, on a day that the NYSE is closed for business. In such event, on such day you will be permitted to purchase or redeem shares of such funds and net asset values will be calculated for such funds.

TIMING OF ORDERS

For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day prior to the close of the customary trading session or any earlier NYSE closing time that day. For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, purchase orders that are received and accepted before the close of the customary trading session or any earlier NYSE closing time on a business day generally are processed that day and settled on the next business day.

For Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day, prior to the last net asset value determination on such business day; however, if your order is received and accepted after the close of the customary trading session or any earlier NYSE closing time that day, your order generally will be processed on the next business day and settled on the second business day following the receipt and acceptance of your order.

For all funds, you can exchange shares on each business day, prior to the close of the customary trading session or any earlier NYSE closing time that day. Shareholders of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio therefore cannot exchange their shares after the close of the customary trading session or any earlier NYSE closing time on a particular day, even though these funds remain open after such closing time.

The funds price purchase, exchange and redemption orders at the net asset value calculated after the transfer agent receives an order in good order. Any applicable sales charges are applied at the time an order is processed. A fund may postpone the right of redemption only under unusual circumstances, as allowed by the Securities and Exchange Commission, such as when the NYSE restricts or suspends trading.

THE AIM FUNDS

TAXES

In general, if you are a taxable investor, dividends and distributions you receive are taxable as ordinary income or long-term capital gains for federal income tax purposes. This is true 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 each fund during the prior year. Investors should read the information under the heading "Other Information--Special Tax Information Regarding the Fund" where applicable in the fund's prospectus. In addition, investors in taxable accounts should be aware of the following basic tax points:

- Distributions of net short-term capital gains are taxable to you as ordinary income. A fund that is expected to have higher turnover than that of other funds is more likely to generate short-term gain or loss.

- 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.

- If you are an individual and meet certain holding period requirements, a portion of income dividends paid by a fund may be designated as qualified dividend income eligible for taxation at long-term capital gain rates. These reduced rates generally are available for dividends paid by a fund out of dividends earned on the 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.

- 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 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.

- If you invest in a fund shortly before it makes a capital gains distribution, the distribution will lower the value of the fund's shares by the amount of the distribution and, in effect, you will receive some of your investment back in the form of a taxable distribution. This is sometimes referred to as "buying a dividend."

- 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 28% of any distributions or proceeds paid.

- 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 as a foreign tax credit. 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.

The preceding discussion concerning the taxability of fund dividends and distributions and of redemptions and exchanges of fund shares is inapplicable to investors that are generally exempt from federal income tax, such as retirement plans that are qualified under Section 401, 403, 408, 408A and 457 of the Code, individual retirement accounts (IRAs) and Roth IRAs. You should consult your tax advisor before investing in a fund.

PAYMENTS TO FINANCIAL ADVISORS

The financial advisor 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 Aim Distributors or one or more of its corporate affiliates (collectively, Invesco Aim Affiliates) may make additional cash payments to financial advisors 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 Aim Affiliates make these payments from their own resources, from Invesco Aim Distributors' retention of initial sales charges and from payments to Invesco Aim Distributors made by the funds under their 12b-1 plans. In this context, "financial advisors" include any broker, dealer, bank (including bank trust departments), registered investment advisor, financial planner, retirement plan administrator and any other financial intermediary having a selling, administration or similar agreement with Invesco Aim Affiliates.

Invesco Aim Affiliates make payments as incentives to certain financial advisors to promote and sell shares of the funds. The benefits Invesco Aim Affiliates receive when they make these payments include, among other things, placing the funds on the financial advisor's funds sales system, and access (in some cases on a preferential basis over other competitors) to individual members of the financial advisor's sales force or to the financial advisor's management. These payments are sometimes referred to as "shelf space" payments because the payments compensate the financial advisor for including the funds in its fund sales system (on its "sales shelf"). Invesco Aim Affiliates compensate financial advisors differently depending typically on the level and/or type of considerations provided by the financial advisor. The payments Invesco Aim 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% of the public offering price of all shares sold by the financial advisor 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 advisor (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 AIM FUNDS

the funds and Asset-Based Payments primarily create incentives to retain previously sold shares of the funds in investor accounts. Invesco Aim Affiliates may pay a financial advisor either or both Sales-Based Payments and Asset-Based Payments.

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

Invesco Aim Affiliates also may make payments to certain financial advisors 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 Aim 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 Statement of Additional Information about these payments and the services provided by financial advisors. In certain cases these payments could be significant to the financial advisor. Your financial advisor may charge you additional fees or commissions other than those disclosed in this prospectus. You can ask your financial advisor about any payments it receives from Invesco Aim Affiliates or the funds, as well as about fees and/or commissions it charges.

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. 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 advisor believes the change would be in the best interests of long-term shareholders.

The Invesco Aim Affiliates currently use the following tools designed to discourage excessive short-term trading in the retail funds:

- Trade activity monitoring.

- Trading guidelines.

- Redemption fees on trades in certain funds.

- 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 Aim 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.

Some investments in the funds are made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and some investments are made indirectly through products that use the funds as underlying investments, such as employee benefit plans, funds of funds, qualified tuition plans, and variable insurance contracts (these products are generally referred to as conduit investment vehicles). If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary account or conduit investment vehicle may be considered an individual shareholder of the funds for purposes of assessing redemption fees. In these cases, the funds are likely to be limited in their ability to assess redemption fees on transactions initiated by individual investors, and the applicability of redemption fees will be determined based on the aggregate holdings and redemptions of the intermediary account or the conduit investment vehicle.

If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary or conduit investment vehicle may impose rules intended to limit short-term money movements in and out of the funds which differ from those described in this prospectus. In such cases, there may be redemption fees imposed by the intermediary or conduit investment vehicle on different terms (and subject to different exceptions) than those set forth above. Please consult your financial advisor or other intermediary for details.

Money Market Funds. The Board of AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and 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 Board 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 Board does 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; investors must perceive an investment in such funds as an alternative to cash, and must be able to purchase and redeem shares regularly and frequently.

THE AIM FUNDS

- 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.

- 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, there are no price arbitrage opportunities.

- Because the money market funds seek to maintain a constant net asset value, investors expect to receive upon redemption the amount they originally invested in such funds. Imposition of redemption fees would run contrary to investor expectations.

AIM Limited Maturity Treasury Fund. The Board of AIM Limited Maturity Treasury Fund has not adopted any policies and procedures that would limit frequent purchases and redemptions of such fund's shares. The Board 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 AIM Limited Maturity Treasury 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, AIM Limited Maturity Treasury Fund's yield could be negatively impacted.

The Board does not believe that it is appropriate to adopt any such policies and procedures for the fund for the following reasons:

- Many investors use AIM Limited Maturity Treasury Fund as a short-term investment alternative and should be able to purchase and redeem shares regularly and frequently.

- One of the advantages of AIM Limited Maturity Treasury Fund as compared to other investment options is liquidity. Any policy that diminishes the liquidity of AIM Limited Maturity Treasury Fund will be detrimental to the continuing operations of such fund.

TRADE ACTIVITY MONITORING

Invesco Aim 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 Aim 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 Aim Affiliates will use reasonable efforts to apply the fund's policies uniformly given the practical limitations described above.

The ability of Invesco Aim 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 severely limited or non-existent.

TRADING GUIDELINES

If you exceed four exchanges out of a fund per calendar year (other than the money market funds and AIM Limited Maturity Treasury Fund), or a fund or an Invesco Aim Affiliate determines, in its sole discretion, that your short-term trading activity is excessive (regardless of whether or not you exceed such guidelines), it may, in its discretion, reject any additional purchase and exchange orders.

The ability of Invesco Aim Affiliates to monitor exchanges made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent. If shares of the funds are held in the name of a conduit investment vehicle and not in the names of the individual investors who have invested in the funds through the conduit investment vehicle, the conduit investment vehicle may be considered an individual shareholder of the funds. To the extent that a conduit investment vehicle is considered an individual shareholder of the funds, the funds are likely to be limited in their ability to impose exchange limitations on individual transactions initiated by investors who have invested in the funds through the conduit investment vehicle.

REDEMPTION FEES

You may be charged a 2% redemption fee if you redeem, including redeeming by exchange, shares of certain funds within 31 days of purchase. The ability of a fund to assess a redemption fee on redemptions effectuated through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent.

FAIR VALUE PRICING

Securities owned by a fund 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. Fair value pricing may 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.

More information may be obtained free of charge upon request. The Statement of Additional Information (SAI), a current version of which is on file with the Securities and Exchange Commission (SEC), contains more details about the fund and is incorporated by reference into the prospectus (is legally a part of the prospectus). Annual and semiannual reports to shareholders contain additional information about the fund's investments. The fund's annual report also discusses the market conditions and investment strategies that significantly affected the fund's performance during its last fiscal year. The fund also files its complete schedule of portfolio holdings with the SEC for the 1st and 3rd quarters of each fiscal year on Form N-Q. The fund's most recent portfolio holdings, as filed on Form N-Q, are also available at http://www.invescoaim.com.

If you have questions about this fund, another fund in The AIM Family of Funds-- Registered Trademark-- or your account, or wish to obtain free copies of the fund's current SAI or annual or semiannual reports, please contact us by mail at Invesco Aim Investment Services, Inc., P.O. Box 4739, Houston, TX 77210-4739 or

BY TELEPHONE:        (800) 959-4246

ON THE INTERNET:     You can send us a request by e-mail or download prospectuses, SAIs,
                     annual or semiannual reports via our website: http://www.invescoaim.com

You can also review and obtain copies of the fund's SAI, financial reports, the fund's Forms N-Q and other information at the SEC's Public Reference Room in Washington, DC; on the EDGAR database on the SEC's Internet website (http://www.sec.gov); or, after paying a duplicating fee, by sending a letter to the SEC's Public Reference Section, Washington, DC 20549-0102 or by sending an electronic mail request to publicinfo@sec.gov. Please call the SEC at 1-202-942- 8090 for information about the Public Reference Room.

invescoaim.com  GAL-PRO-1

                                                 [INVESCO AIM LOGO APPEARS HERE]
                                                       --Service Mark--

                                                      AIM INCOME ALLOCATION FUND

                                                              ------------------
                                                                     PROSPECTUS
                                                              ------------------

                                                                October 3, 2008

AIM Income Allocation Fund's investment objective is to achieve a high level of current income with growth of capital as a secondary objective.

This prospectus contains important information about the Class A, B, C, R and Y shares of the fund. Please read it before investing and keep it for future reference.

As with all other mutual fund securities, the Securities and Exchange Commission has not approved or disapproved these securities or determined whether the information in this prospectus is adequate or accurate. Anyone who tells you otherwise is committing a crime.

An investment in the fund:
- is not FDIC insured;
- may lose value; and
- is not guaranteed by a bank.

RISK/RETURN SUMMARY                           1
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PERFORMANCE INFORMATION                       1
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Annual Total Returns                          1
Performance Table                             2
FEE TABLE AND EXPENSE EXAMPLE                 3
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Fee Table                                     3
Expense Example                               4
HYPOTHETICAL INVESTMENT AND EXPENSE
  INFORMATION                                 4

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INVESTMENT OBJECTIVES, STRATEGIES AND
  RISKS                                       5
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Objectives and Strategies                     5
Risks                                         6
DISCLOSURE OF PORTFOLIO HOLDINGS              9
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FUND MANAGEMENT                               9
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The Advisors                                  9
Advisor Compensation                         10
Portfolio Manager                            10
OTHER INFORMATION                            11
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Sales Charges                                11
Dividends and Distributions                  11
FINANCIAL HIGHLIGHTS                         12
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GENERAL INFORMATION                         A-1
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Choosing a Share Class                      A-1
Share Class Eligibility                     A-2
Distribution and Service (12b-1) Fees       A-2
Initial Sales Charges (Class A Shares
  Only)                                     A-3
Contingent Deferred Sales Charges (CDSCs)   A-4
Redemption Fees                             A-6
Purchasing Shares                           A-6
Redeeming Shares                            A-8
Exchanging Shares                           A-9
Rights Reserved by the Funds               A-11
Pricing of Shares                          A-11
Taxes                                      A-13
Payments to Financial Advisors             A-13
Excessive Short-Term Trading Activity
  (Market Timing) Disclosures              A-14
OBTAINING ADDITIONAL INFORMATION     Back Cover
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The AIM Family of Funds, AIM and Design, AIM, AIM Funds, AIM Funds and Design, AIM Investments, AIM Investor, AIM Lifetime America, AIM LINK, AIM Institutional Funds, aimfunds.com, La Familia AIM de Fondos, La Familia AIM de Fondos and Design, Invierta con DISCIPLINA, Invest with DISCIPLINE, The AIM College Savings Plan, AIM Solo 401(k), AIM Investments and Design and Your goals. Our solutions. are registered service marks and AIM Bank Connection, AIM Internet Connect, AIM Private Asset Management, AIM Private Asset Management and Design, AIM Stylized and/or Design, AIM Alternative Assets and Design and myaim.com are service marks of Invesco Aim Management Group, Inc. AIM Trimark is a registered service mark of Invesco Aim Management Group, Inc. and Invesco Trimark Ltd.

No dealer, salesperson or any other person has been authorized to give any information or to make any representations other than those contained in this prospectus, and you should not rely on such other information or representations.

The fund's investment objective is to achieve a high level of current income with growth of capital as a secondary objective.

The fund is a "fund of funds," and invests its assets in other underlying mutual funds advised by Invesco Aim Advisors, Inc. (the advisor or Invesco Aim). The fund seeks to meet its objective by investing its assets in a selection of underlying funds which primarily invest in international or domestic equities, fixed income securities or real estate investment trusts (REITs). The fund's target allocation is to invest 65% of its total assets in underlying funds that invest primarily in fixed-income securities and 35% of its total assets in underlying funds that invest primarily in equity securities.

The fund's investment performance depends on the investment performance of the underlying funds in which it invests. Therefore, the risks associated with an investment in a fund of funds, such as the fund, are also the risks associated with an investment in the underlying funds.

Among the principal risks of investing in the fund and the underlying funds, which could adversely affect the fund's net asset value, yield and total return are:

Fund of Funds Risk                    Liquidity Risk                        Real Estate Risk
Market Risk                           High Yield Risk                       Active Trading Risk
Interest Rate Risk                    Equity Securities Risk                Non-Diversification Risk
Credit Risk                           Foreign Securities Risk               Currency/Exchange Rate Risk
U.S. Government Obligations Risk      Developing Markets Securities Risk    Management Risk
High-Coupon U.S. Government Agency    Convertible Securities Risk           Reinvestment Risk
  Mortgage-Backed Securities Risk     Derivatives Risk                      Dollar Roll Transaction Risk
Mortgage- and Asset-Backed            Leverage Risk                         Sector Fund Risk
  Securities Risk                     Reverse Repurchase Agreement Risk     Limited Number of Holdings Risk
Prepayment Risk                       Short Sales Risk

Please see "Investment Objectives, Strategies and Risks" for a description of these risks.

There is a risk that you could lose all or a portion of your investment in the fund and that the income that you receive from the fund may vary. The value of your investment in the fund will go up and down with the prices of the securities held by the underlying funds in which the fund invests.

An investment in the fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

DETERMINATION OF NET ASSET VALUE

The price of each fund's shares is the fund's net asset value per share. The funds value portfolio securities for which market quotations are readily available at market value. The funds value all other securities and assets for which market quotations are unavailable or unreliable at their fair value in good faith using procedures approved by the Boards of Trustees of the funds (collectively, the Board). The Board has delegated the daily determination of good faith fair value methodologies to Invesco Aim's Valuation Committee, which acts in accordance with Board approved policies. On a quarterly basis, Invesco Aim provides the Board various reports indicating the quality and effectiveness of its fair value decisions on portfolio holdings. Securities and other assets quoted in foreign currencies are valued in U.S. dollars based on the prevailing exchange rates on that day.

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 which 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 market quotations are not readily available, including where Invesco Aim determines that the closing price of the security is unreliable, Invesco Aim will value the security at fair value in good faith using procedures approved by the Board. Fair value pricing may 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.

Fair value is that amount that the owner might reasonably expect to receive for the security upon its current sale. Fair value requires consideration of all appropriate factors, including indications of fair value available from pricing services. A fair value price is an estimated price and may vary from the prices used by other mutual funds to calculate their net asset values.

Invesco Aim may use indications of fair value from pricing services approved by the Board. In other circumstances, the Invesco Aim Valuation Committee may fair value securities in good faith using procedures approved by the Board. As a means of evaluating its fair value process, Invesco Aim routinely compares closing market prices, the next day's opening prices for the security in its primary market if available, and indications of fair value from other sources. Fair value pricing methods and pricing services can change from time to time as approved by the Board.

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, Invesco Aim 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 Invesco Aim determines, in its judgment, is likely to have affected the closing price of a foreign security, it will price the security at fair value. Invesco Aim 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 Invesco Aim believes, at the approved degree of certainty, that the price is not reflective of current market value, Invesco Aim 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.

THE AIM FUNDS

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. 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. 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 Invesco Aim valuation committee will fair value the security using procedures approved by the Board.

Short-term Securities. The funds' short-term investments are valued at amortized cost when the security has 60 days or less to maturity. AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio value all their securities at amortized cost. AIM High Income Municipal Fund, AIM Municipal Bond Fund and AIM Tax-Free Intermediate Fund 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.

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. To the extent 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.

Each fund 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. AIM Money Market Fund also determines its net asset value as of 12:00 noon Eastern Time on each business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio determine the net asset value of their shares every fifteen minutes on each business day, beginning at 8:00 a.m. Eastern Time. The last net asset value determination on any business day for Premier Portfolio and Premier U.S. Government Money Portfolio will generally occur at 5:30 p.m. Eastern Time, and the last net asset value determination on any business day for Premier Tax-Exempt Portfolio will generally occur at 4:30 p.m. Eastern Time. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio are authorized not to open for trading on a day that is otherwise a business day if the Federal Reserve Bank of New York and the Bank of New York, the fund's custodian, are not open for business or the Securities Industry and Financial Markets Association (SIFMA) recommends that government securities dealers not open for trading and any such day will not be considered a business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio also may close early on a business day if SIFMA recommends that government securities dealers close early. If Premier Portfolio, Premier Tax-Exempt Portfolio or Premier U.S. Government Money Portfolio uses its discretion to close early on a business day, the last net asset value calculation will occur as of the time of such closing.

From time to time and in circumstances deemed appropriate by Invesco Aim in its sole discretion, each of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio may remain open for business, during customary business day hours, on a day that the NYSE is closed for business. In such event, on such day you will be permitted to purchase or redeem shares of such funds and net asset values will be calculated for such funds.

TIMING OF ORDERS

For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day prior to the close of the customary trading session or any earlier NYSE closing time that day. For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, purchase orders that are received and accepted before the close of the customary trading session or any earlier NYSE closing time on a business day generally are processed that day and settled on the next business day.

For Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day, prior to the last net asset value determination on such business day; however, if your order is received and accepted after the close of the customary trading session or any earlier NYSE closing time that day, your order generally will be processed on the next business day and settled on the second business day following the receipt and acceptance of your order.

For all funds, you can exchange shares on each business day, prior to the close of the customary trading session or any earlier NYSE closing time that day. Shareholders of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio therefore cannot exchange their shares after the close of the customary trading session or any earlier NYSE closing time on a particular day, even though these funds remain open after such closing time.

The funds price purchase, exchange and redemption orders at the net asset value calculated after the transfer agent receives an order in good order. Any applicable sales charges are applied at the time an order is processed. A fund may postpone the right of redemption only under unusual circumstances, as allowed by the Securities and Exchange Commission, such as when the NYSE restricts or suspends trading.

THE AIM FUNDS

TAXES

In general, if you are a taxable investor, dividends and distributions you receive are taxable as ordinary income or long-term capital gains for federal income tax purposes. This is true 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 each fund during the prior year. Investors should read the information under the heading "Other Information--Special Tax Information Regarding the Fund" where applicable in the fund's prospectus. In addition, investors in taxable accounts should be aware of the following basic tax points:

- Distributions of net short-term capital gains are taxable to you as ordinary income. A fund that is expected to have higher turnover than that of other funds is more likely to generate short-term gain or loss.

- 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.

- If you are an individual and meet certain holding period requirements, a portion of income dividends paid by a fund may be designated as qualified dividend income eligible for taxation at long-term capital gain rates. These reduced rates generally are available for dividends paid by a fund out of dividends earned on the 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.

- 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 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.

- If you invest in a fund shortly before it makes a capital gains distribution, the distribution will lower the value of the fund's shares by the amount of the distribution and, in effect, you will receive some of your investment back in the form of a taxable distribution. This is sometimes referred to as "buying a dividend."

- 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 28% of any distributions or proceeds paid.

- 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 as a foreign tax credit. 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.

The preceding discussion concerning the taxability of fund dividends and distributions and of redemptions and exchanges of fund shares is inapplicable to investors that are generally exempt from federal income tax, such as retirement plans that are qualified under Section 401, 403, 408, 408A and 457 of the Code, individual retirement accounts (IRAs) and Roth IRAs. You should consult your tax advisor before investing in a fund.

PAYMENTS TO FINANCIAL ADVISORS

The financial advisor 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 Aim Distributors or one or more of its corporate affiliates (collectively, Invesco Aim Affiliates) may make additional cash payments to financial advisors 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 Aim Affiliates make these payments from their own resources, from Invesco Aim Distributors' retention of initial sales charges and from payments to Invesco Aim Distributors made by the funds under their 12b-1 plans. In this context, "financial advisors" include any broker, dealer, bank (including bank trust departments), registered investment advisor, financial planner, retirement plan administrator and any other financial intermediary having a selling, administration or similar agreement with Invesco Aim Affiliates.

Invesco Aim Affiliates make payments as incentives to certain financial advisors to promote and sell shares of the funds. The benefits Invesco Aim Affiliates receive when they make these payments include, among other things, placing the funds on the financial advisor's funds sales system, and access (in some cases on a preferential basis over other competitors) to individual members of the financial advisor's sales force or to the financial advisor's management. These payments are sometimes referred to as "shelf space" payments because the payments compensate the financial advisor for including the funds in its fund sales system (on its "sales shelf"). Invesco Aim Affiliates compensate financial advisors differently depending typically on the level and/or type of considerations provided by the financial advisor. The payments Invesco Aim 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% of the public offering price of all shares sold by the financial advisor 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 advisor (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 AIM FUNDS

the funds and Asset-Based Payments primarily create incentives to retain previously sold shares of the funds in investor accounts. Invesco Aim Affiliates may pay a financial advisor either or both Sales-Based Payments and Asset-Based Payments.

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

Invesco Aim Affiliates also may make payments to certain financial advisors 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 Aim 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 Statement of Additional Information about these payments and the services provided by financial advisors. In certain cases these payments could be significant to the financial advisor. Your financial advisor may charge you additional fees or commissions other than those disclosed in this prospectus. You can ask your financial advisor about any payments it receives from Invesco Aim Affiliates or the funds, as well as about fees and/or commissions it charges.

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. 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 advisor believes the change would be in the best interests of long-term shareholders.

The Invesco Aim Affiliates currently use the following tools designed to discourage excessive short-term trading in the retail funds:

- Trade activity monitoring.

- Trading guidelines.

- Redemption fees on trades in certain funds.

- 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 Aim 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.

Some investments in the funds are made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and some investments are made indirectly through products that use the funds as underlying investments, such as employee benefit plans, funds of funds, qualified tuition plans, and variable insurance contracts (these products are generally referred to as conduit investment vehicles). If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary account or conduit investment vehicle may be considered an individual shareholder of the funds for purposes of assessing redemption fees. In these cases, the funds are likely to be limited in their ability to assess redemption fees on transactions initiated by individual investors, and the applicability of redemption fees will be determined based on the aggregate holdings and redemptions of the intermediary account or the conduit investment vehicle.

If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary or conduit investment vehicle may impose rules intended to limit short-term money movements in and out of the funds which differ from those described in this prospectus. In such cases, there may be redemption fees imposed by the intermediary or conduit investment vehicle on different terms (and subject to different exceptions) than those set forth above. Please consult your financial advisor or other intermediary for details.

Money Market Funds. The Board of AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and 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 Board 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 Board does 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; investors must perceive an investment in such funds as an alternative to cash, and must be able to purchase and redeem shares regularly and frequently.

THE AIM FUNDS

- 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.

- 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, there are no price arbitrage opportunities.

- Because the money market funds seek to maintain a constant net asset value, investors expect to receive upon redemption the amount they originally invested in such funds. Imposition of redemption fees would run contrary to investor expectations.

AIM Limited Maturity Treasury Fund. The Board of AIM Limited Maturity Treasury Fund has not adopted any policies and procedures that would limit frequent purchases and redemptions of such fund's shares. The Board 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 AIM Limited Maturity Treasury 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, AIM Limited Maturity Treasury Fund's yield could be negatively impacted.

The Board does not believe that it is appropriate to adopt any such policies and procedures for the fund for the following reasons:

- Many investors use AIM Limited Maturity Treasury Fund as a short-term investment alternative and should be able to purchase and redeem shares regularly and frequently.

- One of the advantages of AIM Limited Maturity Treasury Fund as compared to other investment options is liquidity. Any policy that diminishes the liquidity of AIM Limited Maturity Treasury Fund will be detrimental to the continuing operations of such fund.

TRADE ACTIVITY MONITORING

Invesco Aim 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 Aim 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 Aim Affiliates will use reasonable efforts to apply the fund's policies uniformly given the practical limitations described above.

The ability of Invesco Aim 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 severely limited or non-existent.

TRADING GUIDELINES

If you exceed four exchanges out of a fund per calendar year (other than the money market funds and AIM Limited Maturity Treasury Fund), or a fund or an Invesco Aim Affiliate determines, in its sole discretion, that your short-term trading activity is excessive (regardless of whether or not you exceed such guidelines), it may, in its discretion, reject any additional purchase and exchange orders.

The ability of Invesco Aim Affiliates to monitor exchanges made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent. If shares of the funds are held in the name of a conduit investment vehicle and not in the names of the individual investors who have invested in the funds through the conduit investment vehicle, the conduit investment vehicle may be considered an individual shareholder of the funds. To the extent that a conduit investment vehicle is considered an individual shareholder of the funds, the funds are likely to be limited in their ability to impose exchange limitations on individual transactions initiated by investors who have invested in the funds through the conduit investment vehicle.

REDEMPTION FEES

You may be charged a 2% redemption fee if you redeem, including redeeming by exchange, shares of certain funds within 31 days of purchase. The ability of a fund to assess a redemption fee on redemptions effectuated through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent.

FAIR VALUE PRICING

Securities owned by a fund 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. Fair value pricing may 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.

More information may be obtained free of charge upon request. The Statement of Additional Information (SAI), a current version of which is on file with the Securities and Exchange Commission (SEC), contains more details about the fund and is incorporated by reference into the prospectus (is legally a part of the prospectus). Annual and semiannual reports to shareholders contain additional information about the fund's investments. The fund's annual report also discusses the market conditions and investment strategies that significantly affected the fund's performance during its last fiscal year. The fund also files its complete schedule of portfolio holdings with the SEC for the 1st and 3rd quarters of each fiscal year on Form N-Q. The fund's most recent portfolio holdings, as filed on Form N-Q, are also available at http://www.invescoaim.com.

If you have questions about this fund, another fund in The AIM Family of Funds-- Registered Trademark-- or your account, or wish to obtain free copies of the fund's current SAI or annual or semiannual reports, please contact us by mail at Invesco Aim Investment Services, Inc., P.O. Box 4739, Houston, TX 77210-4739 or

BY TELEPHONE:        (800) 959-4246

ON THE INTERNET:     You can send us a request by e-mail or download prospectuses, SAIs,
                     annual or semiannual reports via our website: http://www.invescoaim.com

You can also review and obtain copies of the fund's SAI, financial reports, the fund's Forms N-Q and other information at the SEC's Public Reference Room in Washington, DC; on the EDGAR database on the SEC's Internet website (http://www.sec.gov); or, after paying a duplicating fee, by sending a letter to the SEC's Public Reference Section, Washington, DC 20549-0102 or by sending an electronic mail request to publicinfo@sec.gov. Please call the SEC at 1-202-942- 8090 for information about the Public Reference Room.

invescoaim.com  INCAL-PRO-1

                                                 [INVESCO AIM LOGO APPEARS HERE]
                                                       --Service Mark--

                                               AIM INTERNATIONAL ALLOCATION FUND

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                                                                     PROSPECTUS
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                                                                October 3, 2008

AIM International Allocation Fund's investment objective is to provide long-term growth of capital.

This prospectus contains important information about the Class A, B, C, R and Y shares of the fund. Please read it before investing and keep it for future reference.

As with all other mutual fund securities, the Securities and Exchange Commission has not approved or disapproved these securities or determined whether the information in this prospectus is adequate or accurate. Anyone who tells you otherwise is committing a crime.

An investment in the fund:
- is not FDIC insured;
- may lose value; and
- is not guaranteed by a bank.

RISK/RETURN SUMMARY                           1
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PERFORMANCE INFORMATION                       1
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Annual Total Returns                          1
Performance Table                             2
FEE TABLE AND EXPENSE EXAMPLE                 2
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Fee Table                                     2
Expense Example                               3
HYPOTHETICAL INVESTMENT AND EXPENSE
  INFORMATION                                 3
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INVESTMENT OBJECTIVE, STRATEGIES AND
  RISKS                                       5
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Objective and Strategies                      5
Risks                                         5
DISCLOSURE OF PORTFOLIO HOLDINGS              7
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FUND MANAGEMENT                               7
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The Advisors                                  7
Advisor Compensation                          8
Portfolio Manager                             8
OTHER INFORMATION                             8
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Sales Charges                                 8
Dividends and Distributions                   8
FINANCIAL HIGHLIGHTS                          9
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GENERAL INFORMATION                         A-1
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Choosing a Share Class                      A-1
Share Class Eligibility                     A-2
Distribution and Service (12b-1) Fees       A-2
Initial Sales Charges (Class A Shares
  Only)                                     A-3
Contingent Deferred Sales Charges (CDSCs)   A-4
Redemption Fees                             A-6
Purchasing Shares                           A-6
Redeeming Shares                            A-8
Exchanging Shares                           A-9
Rights Reserved by the Funds               A-11
Pricing of Shares                          A-11
Taxes                                      A-13
Payments to Financial Advisors             A-13
Excessive Short-Term Trading Activity
  (Market Timing) Disclosures              A-14
OBTAINING ADDITIONAL INFORMATION     Back Cover
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The AIM Family of Funds, AIM and Design, AIM, AIM Funds, AIM Funds and Design, AIM Investments, AIM Investor, AIM Lifetime America, AIM LINK, AIM Institutional Funds, aimfunds.com, La Familia AIM de Fondos, La Familia AIM de Fondos and Design, Invierta con DISCIPLINA, Invest with DISCIPLINE, The AIM College Savings Plan, AIM Solo 401(k), AIM Investments and Design and Your goals. Our solutions. are registered service marks and AIM Bank Connection, AIM Internet Connect, AIM Private Asset Management, AIM Private Asset Management and Design, AIM Stylized and/or Design, AIM Alternative Assets and Design and myaim.com are service marks of Invesco Aim Management Group, Inc. AIM Trimark is a registered service mark of Invesco Aim Management Group, Inc. and Invesco Trimark Ltd.

No dealer, salesperson or any other person has been authorized to give any information or to make any representations other than those contained in this prospectus, and you should not rely on such other information or representations.

The fund's investment objective is to provide long-term growth of capital.

The fund is a "fund of funds," and invests its assets in other underlying mutual funds rather than directly in individual securities. The underlying funds in which the fund invests are mutual funds (AIM mutual funds) advised by Invesco Aim Advisors, Inc. (the advisor or Invesco Aim) and exchange-traded funds (PowerShares ETFs) advised by Invesco PowerShares Capital Management LLC (PowerShares Capital) (the underlying funds). The fund and the underlying funds in which it invests are part of the same group of investment companies. Invesco Aim and PowerShares Capital are affiliates of each other as they are both indirect wholly-owned subsidiaries of Invesco Ltd. The fund seeks to meet its objective by investing its assets in a selection of underlying funds that invest primarily in global or international securities. The underlying funds may invest a portion of their assets in securities of domestic issuers. The fund's target allocation is to invest 100% of its total assets in underlying funds that invest primarily in equity securities.

The fund's investment performance depends on the investment performance of the underlying funds in which it invests. Therefore, the risks associated with an investment in a fund of funds, such as the fund, are also the risks associated with an investment in the underlying funds.

Among the principal risks of investing in the fund and the underlying funds, which could adversely affect the fund's net asset value, yield and total return are:

Fund of Funds Risk            Foreign Securities Risk        High Yield Risk               Limited Number of Holdings Risk
Exchange-Traded Funds Risk    Convertible Securities Risk    Short Sales Risk
Market Risk                   IPO Investment Risk            Cash/Cash Equivalents Risk
Equity Securities Risk        Interest Rate Risk             Non-Diversification Risk

Please see "Investment Objective, Strategies and Risks" for a description of these risks.

There is a risk that you could lose all or a portion of your investment in the fund and that the income that you receive from the fund may vary. The value of your investment in the fund will go up and down with the prices of the securities held by the underlying funds in which the fund invests.

An investment in the fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

DETERMINATION OF NET ASSET VALUE

The price of each fund's shares is the fund's net asset value per share. The funds value portfolio securities for which market quotations are readily available at market value. The funds value all other securities and assets for which market quotations are unavailable or unreliable at their fair value in good faith using procedures approved by the Boards of Trustees of the funds (collectively, the Board). The Board has delegated the daily determination of good faith fair value methodologies to Invesco Aim's Valuation Committee, which acts in accordance with Board approved policies. On a quarterly basis, Invesco Aim provides the Board various reports indicating the quality and effectiveness of its fair value decisions on portfolio holdings. Securities and other assets quoted in foreign currencies are valued in U.S. dollars based on the prevailing exchange rates on that day.

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 which 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 market quotations are not readily available, including where Invesco Aim determines that the closing price of the security is unreliable, Invesco Aim will value the security at fair value in good faith using procedures approved by the Board. Fair value pricing may 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.

Fair value is that amount that the owner might reasonably expect to receive for the security upon its current sale. Fair value requires consideration of all appropriate factors, including indications of fair value available from pricing services. A fair value price is an estimated price and may vary from the prices used by other mutual funds to calculate their net asset values.

Invesco Aim may use indications of fair value from pricing services approved by the Board. In other circumstances, the Invesco Aim Valuation Committee may fair value securities in good faith using procedures approved by the Board. As a means of evaluating its fair value process, Invesco Aim routinely compares closing market prices, the next day's opening prices for the security in its primary market if available, and indications of fair value from other sources. Fair value pricing methods and pricing services can change from time to time as approved by the Board.

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, Invesco Aim 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 Invesco Aim determines, in its judgment, is likely to have affected the closing price of a foreign security, it will price the security at fair value. Invesco Aim 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 Invesco Aim believes, at the approved degree of certainty, that the price is not reflective of current market value, Invesco Aim 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.

THE AIM FUNDS

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. 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. 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 Invesco Aim valuation committee will fair value the security using procedures approved by the Board.

Short-term Securities. The funds' short-term investments are valued at amortized cost when the security has 60 days or less to maturity. AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio value all their securities at amortized cost. AIM High Income Municipal Fund, AIM Municipal Bond Fund and AIM Tax-Free Intermediate Fund 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.

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. To the extent 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.

Each fund 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. AIM Money Market Fund also determines its net asset value as of 12:00 noon Eastern Time on each business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio determine the net asset value of their shares every fifteen minutes on each business day, beginning at 8:00 a.m. Eastern Time. The last net asset value determination on any business day for Premier Portfolio and Premier U.S. Government Money Portfolio will generally occur at 5:30 p.m. Eastern Time, and the last net asset value determination on any business day for Premier Tax-Exempt Portfolio will generally occur at 4:30 p.m. Eastern Time. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio are authorized not to open for trading on a day that is otherwise a business day if the Federal Reserve Bank of New York and the Bank of New York, the fund's custodian, are not open for business or the Securities Industry and Financial Markets Association (SIFMA) recommends that government securities dealers not open for trading and any such day will not be considered a business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio also may close early on a business day if SIFMA recommends that government securities dealers close early. If Premier Portfolio, Premier Tax-Exempt Portfolio or Premier U.S. Government Money Portfolio uses its discretion to close early on a business day, the last net asset value calculation will occur as of the time of such closing.

From time to time and in circumstances deemed appropriate by Invesco Aim in its sole discretion, each of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio may remain open for business, during customary business day hours, on a day that the NYSE is closed for business. In such event, on such day you will be permitted to purchase or redeem shares of such funds and net asset values will be calculated for such funds.

TIMING OF ORDERS

For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day prior to the close of the customary trading session or any earlier NYSE closing time that day. For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, purchase orders that are received and accepted before the close of the customary trading session or any earlier NYSE closing time on a business day generally are processed that day and settled on the next business day.

For Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day, prior to the last net asset value determination on such business day; however, if your order is received and accepted after the close of the customary trading session or any earlier NYSE closing time that day, your order generally will be processed on the next business day and settled on the second business day following the receipt and acceptance of your order.

For all funds, you can exchange shares on each business day, prior to the close of the customary trading session or any earlier NYSE closing time that day. Shareholders of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio therefore cannot exchange their shares after the close of the customary trading session or any earlier NYSE closing time on a particular day, even though these funds remain open after such closing time.

The funds price purchase, exchange and redemption orders at the net asset value calculated after the transfer agent receives an order in good order. Any applicable sales charges are applied at the time an order is processed. A fund may postpone the right of redemption only under unusual circumstances, as allowed by the Securities and Exchange Commission, such as when the NYSE restricts or suspends trading.

THE AIM FUNDS

TAXES

In general, if you are a taxable investor, dividends and distributions you receive are taxable as ordinary income or long-term capital gains for federal income tax purposes. This is true 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 each fund during the prior year. Investors should read the information under the heading "Other Information--Special Tax Information Regarding the Fund" where applicable in the fund's prospectus. In addition, investors in taxable accounts should be aware of the following basic tax points:

- Distributions of net short-term capital gains are taxable to you as ordinary income. A fund that is expected to have higher turnover than that of other funds is more likely to generate short-term gain or loss.

- 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.

- If you are an individual and meet certain holding period requirements, a portion of income dividends paid by a fund may be designated as qualified dividend income eligible for taxation at long-term capital gain rates. These reduced rates generally are available for dividends paid by a fund out of dividends earned on the 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.

- 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 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.

- If you invest in a fund shortly before it makes a capital gains distribution, the distribution will lower the value of the fund's shares by the amount of the distribution and, in effect, you will receive some of your investment back in the form of a taxable distribution. This is sometimes referred to as "buying a dividend."

- 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 28% of any distributions or proceeds paid.

- 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 as a foreign tax credit. 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.

The preceding discussion concerning the taxability of fund dividends and distributions and of redemptions and exchanges of fund shares is inapplicable to investors that are generally exempt from federal income tax, such as retirement plans that are qualified under Section 401, 403, 408, 408A and 457 of the Code, individual retirement accounts (IRAs) and Roth IRAs. You should consult your tax advisor before investing in a fund.

PAYMENTS TO FINANCIAL ADVISORS

The financial advisor 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 Aim Distributors or one or more of its corporate affiliates (collectively, Invesco Aim Affiliates) may make additional cash payments to financial advisors 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 Aim Affiliates make these payments from their own resources, from Invesco Aim Distributors' retention of initial sales charges and from payments to Invesco Aim Distributors made by the funds under their 12b-1 plans. In this context, "financial advisors" include any broker, dealer, bank (including bank trust departments), registered investment advisor, financial planner, retirement plan administrator and any other financial intermediary having a selling, administration or similar agreement with Invesco Aim Affiliates.

Invesco Aim Affiliates make payments as incentives to certain financial advisors to promote and sell shares of the funds. The benefits Invesco Aim Affiliates receive when they make these payments include, among other things, placing the funds on the financial advisor's funds sales system, and access (in some cases on a preferential basis over other competitors) to individual members of the financial advisor's sales force or to the financial advisor's management. These payments are sometimes referred to as "shelf space" payments because the payments compensate the financial advisor for including the funds in its fund sales system (on its "sales shelf"). Invesco Aim Affiliates compensate financial advisors differently depending typically on the level and/or type of considerations provided by the financial advisor. The payments Invesco Aim 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% of the public offering price of all shares sold by the financial advisor 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 advisor (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 AIM FUNDS

the funds and Asset-Based Payments primarily create incentives to retain previously sold shares of the funds in investor accounts. Invesco Aim Affiliates may pay a financial advisor either or both Sales-Based Payments and Asset-Based Payments.

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

Invesco Aim Affiliates also may make payments to certain financial advisors 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 Aim 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 Statement of Additional Information about these payments and the services provided by financial advisors. In certain cases these payments could be significant to the financial advisor. Your financial advisor may charge you additional fees or commissions other than those disclosed in this prospectus. You can ask your financial advisor about any payments it receives from Invesco Aim Affiliates or the funds, as well as about fees and/or commissions it charges.

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. 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 advisor believes the change would be in the best interests of long-term shareholders.

The Invesco Aim Affiliates currently use the following tools designed to discourage excessive short-term trading in the retail funds:

- Trade activity monitoring.

- Trading guidelines.

- Redemption fees on trades in certain funds.

- 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 Aim 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.

Some investments in the funds are made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and some investments are made indirectly through products that use the funds as underlying investments, such as employee benefit plans, funds of funds, qualified tuition plans, and variable insurance contracts (these products are generally referred to as conduit investment vehicles). If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary account or conduit investment vehicle may be considered an individual shareholder of the funds for purposes of assessing redemption fees. In these cases, the funds are likely to be limited in their ability to assess redemption fees on transactions initiated by individual investors, and the applicability of redemption fees will be determined based on the aggregate holdings and redemptions of the intermediary account or the conduit investment vehicle.

If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary or conduit investment vehicle may impose rules intended to limit short-term money movements in and out of the funds which differ from those described in this prospectus. In such cases, there may be redemption fees imposed by the intermediary or conduit investment vehicle on different terms (and subject to different exceptions) than those set forth above. Please consult your financial advisor or other intermediary for details.

Money Market Funds. The Board of AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and 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 Board 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 Board does 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; investors must perceive an investment in such funds as an alternative to cash, and must be able to purchase and redeem shares regularly and frequently.

THE AIM FUNDS

- 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.

- 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, there are no price arbitrage opportunities.

- Because the money market funds seek to maintain a constant net asset value, investors expect to receive upon redemption the amount they originally invested in such funds. Imposition of redemption fees would run contrary to investor expectations.

AIM Limited Maturity Treasury Fund. The Board of AIM Limited Maturity Treasury Fund has not adopted any policies and procedures that would limit frequent purchases and redemptions of such fund's shares. The Board 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 AIM Limited Maturity Treasury 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, AIM Limited Maturity Treasury Fund's yield could be negatively impacted.

The Board does not believe that it is appropriate to adopt any such policies and procedures for the fund for the following reasons:

- Many investors use AIM Limited Maturity Treasury Fund as a short-term investment alternative and should be able to purchase and redeem shares regularly and frequently.

- One of the advantages of AIM Limited Maturity Treasury Fund as compared to other investment options is liquidity. Any policy that diminishes the liquidity of AIM Limited Maturity Treasury Fund will be detrimental to the continuing operations of such fund.

TRADE ACTIVITY MONITORING

Invesco Aim 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 Aim 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 Aim Affiliates will use reasonable efforts to apply the fund's policies uniformly given the practical limitations described above.

The ability of Invesco Aim 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 severely limited or non-existent.

TRADING GUIDELINES

If you exceed four exchanges out of a fund per calendar year (other than the money market funds and AIM Limited Maturity Treasury Fund), or a fund or an Invesco Aim Affiliate determines, in its sole discretion, that your short-term trading activity is excessive (regardless of whether or not you exceed such guidelines), it may, in its discretion, reject any additional purchase and exchange orders.

The ability of Invesco Aim Affiliates to monitor exchanges made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent. If shares of the funds are held in the name of a conduit investment vehicle and not in the names of the individual investors who have invested in the funds through the conduit investment vehicle, the conduit investment vehicle may be considered an individual shareholder of the funds. To the extent that a conduit investment vehicle is considered an individual shareholder of the funds, the funds are likely to be limited in their ability to impose exchange limitations on individual transactions initiated by investors who have invested in the funds through the conduit investment vehicle.

REDEMPTION FEES

You may be charged a 2% redemption fee if you redeem, including redeeming by exchange, shares of certain funds within 31 days of purchase. The ability of a fund to assess a redemption fee on redemptions effectuated through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent.

FAIR VALUE PRICING

Securities owned by a fund 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. Fair value pricing may 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.

More information may be obtained free of charge upon request. The Statement of Additional Information (SAI), a current version of which is on file with the Securities and Exchange Commission (SEC), contains more details about the fund and is incorporated by reference into the prospectus (is legally a part of the prospectus). Annual and semiannual reports to shareholders contain additional information about the fund's investments. The fund's annual report also discusses the market conditions and investment strategies that significantly affected the fund's performance during its last fiscal year. The fund also files its complete schedule of portfolio holdings with the SEC for the 1st and 3rd quarters of each fiscal year on Form N-Q. The fund's most recent portfolio holdings, as filed on Form N-Q, are also available at http://www.invescoaim.com.

If you have questions about this fund, another fund in The AIM Family of Funds-- Registered Trademark-- or your account, or wish to obtain free copies of the fund's current SAI or annual or semiannual reports, please contact us by mail at Invesco Aim Investment Services, Inc., P.O. Box 4739, Houston, TX 77210-4739 or

BY TELEPHONE:        (800) 959-4246

ON THE INTERNET:     You can send us a request by e-mail or download prospectuses, SAIs,
                     annual or semiannual reports via our website: http://www.invescoaim.com

You can also review and obtain copies of the fund's SAI, financial reports, the fund's Forms N-Q and other information at the SEC's Public Reference Room in Washington, DC; on the EDGAR database on the SEC's Internet website (http://www.sec.gov); or, after paying a duplicating fee, by sending a letter to the SEC's Public Reference Section, Washington, DC 20549-0102 or by sending an electronic mail request to publicinfo@sec.gov. Please call the SEC at 1-202-942- 8090 for information about the Public Reference Room.

invescoaim.com  INTAL-PRO-1

                                                 [INVESCO AIM LOGO APPEARS HERE]
                                                       --Service Mark--

                                                    AIM MID CAP CORE EQUITY FUND

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                                                                     PROSPECTUS
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                                                                October 3, 2008

AIM Mid Cap Core Equity Fund's investment objective is long-term growth of capital.

This prospectus contains important information about the Class A, B, C, R and Y shares of the fund. Please read it before investing and keep it for future reference.

As with all other mutual fund securities, the Securities and Exchange Commission has not approved or disapproved these securities or determined whether the information in this prospectus is adequate or accurate. Anyone who tells you otherwise is committing a crime.

An investment in the fund:
- is not FDIC insured;
- may lose value; and
- is not guaranteed by a bank.

RISK/RETURN SUMMARY                           1
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PERFORMANCE INFORMATION                       1
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Annual Total Returns                          1
Performance Table                             2
FEE TABLE AND EXPENSE EXAMPLE                 3
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Fee Table                                     3
Expense Example                               3
HYPOTHETICAL INVESTMENT AND EXPENSE
  INFORMATION                                 4
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INVESTMENT OBJECTIVE, STRATEGIES AND
  RISKS                                       5
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Objective and Strategies                      5
Risks                                         6
DISCLOSURE OF PORTFOLIO HOLDINGS              7
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FUND MANAGEMENT                               7
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The Advisors                                  7
Advisor Compensation                          8
Portfolio Managers                            8
OTHER INFORMATION                             8
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Sales Charges                                 8
Dividends and Distributions                   8
FINANCIAL HIGHLIGHTS                          9
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GENERAL INFORMATION                         A-1
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Choosing a Share Class                      A-1
Share Class Eligibility                     A-2
Distribution and Service (12b-1) Fees       A-2
Initial Sales Charges (Class A Shares
  Only)                                     A-3
Contingent Deferred Sales Charges (CDSCs)   A-4
Redemption Fees                             A-6
Purchasing Shares                           A-6
Redeeming Shares                            A-8
Exchanging Shares                           A-9
Rights Reserved by the Funds               A-11
Pricing of Shares                          A-11
Taxes                                      A-13
Payments to Financial Advisors             A-13
Excessive Short-Term Trading Activity
  (Market Timing) Disclosures              A-14
OBTAINING ADDITIONAL INFORMATION     Back Cover
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The AIM Family of Funds, AIM and Design, AIM, AIM Funds, AIM Funds and Design, AIM Investments, AIM Investor, AIM Lifetime America, AIM LINK, AIM Institutional Funds, aimfunds.com, La Familia AIM de Fondos, La Familia AIM de Fondos and Design, Invierta con DISCIPLINA, Invest with DISCIPLINE, The AIM College Savings Plan, AIM Solo 401(k), AIM Investments and Design and Your goals. Our solutions. are registered service marks and AIM Bank Connection, AIM Internet Connect, AIM Private Asset Management, AIM Private Asset Management and Design, AIM Stylized and/or Design, AIM Alternative Assets and Design and myaim.com are service marks of Invesco Aim Management Group, Inc. AIM Trimark is a registered service mark of Invesco Aim Management Group, Inc. and Invesco Trimark Ltd.

No dealer, salesperson or any other person has been authorized to give any information or to make any representations other than those contained in this prospectus, and you should not rely on such other information or representations.

The fund's investment objective is long-term growth of capital.

The fund seeks to meet its objective by investing, normally, at least 80% of its assets in equity securities, including convertible securities, of mid- capitalization companies. In selecting securities for the fund's portfolio, the portfolio managers seek to identify those companies that are, in their view, undervalued relative to current or projected earnings, or to the current market value of assets owned by the company.

The fund may invest up to 25% of its total assets in foreign securities. The fund may also invest up to 20% of its assets in equity securities of issuers that have market capitalizations, at the time of purchase, in other market capitalization ranges. The fund may invest up to 20% of its assets in investment-grade debt securities, U.S. government securities, and high-quality money market instruments, including shares of affiliated money market funds.

The fund employs a risk management strategy to reduce volatility. Pursuant to this strategy, the fund generally invests a substantial amount of its assets in cash and cash equivalents.

Among the principal risks of investing in the fund, which could adversely affect its net asset value, yield and total return are:

Market Risk                Convertible Securities Risk    U.S. Government Obligations Risk    Leverage Risk
Equity Securities Risk     Interest Rate Risk             Market Capitalization Risk          Cash/Cash Equivalents Risk
Foreign Securities Risk    Credit Risk                    Derivatives Risk                    Management Risk

Please see "Investment Objective, Strategies and Risks" for a description of these risks.

There is a risk that you could lose all or a portion of your investment in the fund and that the income you may receive from your investment may vary. The value of your investment in the fund will rise and fall with the prices of the securities in which the fund invests.

To the extent the fund holds cash or cash equivalents rather than equity securities, it may not achieve its investment objective and it may under perform its peer group and benchmark index, particularly during periods of strong market performance.

An investment in the fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

DETERMINATION OF NET ASSET VALUE

The price of each fund's shares is the fund's net asset value per share. The funds value portfolio securities for which market quotations are readily available at market value. The funds value all other securities and assets for which market quotations are unavailable or unreliable at their fair value in good faith using procedures approved by the Boards of Trustees of the funds (collectively, the Board). The Board has delegated the daily determination of good faith fair value methodologies to Invesco Aim's Valuation Committee, which acts in accordance with Board approved policies. On a quarterly basis, Invesco Aim provides the Board various reports indicating the quality and effectiveness of its fair value decisions on portfolio holdings. Securities and other assets quoted in foreign currencies are valued in U.S. dollars based on the prevailing exchange rates on that day.

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 which 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 market quotations are not readily available, including where Invesco Aim determines that the closing price of the security is unreliable, Invesco Aim will value the security at fair value in good faith using procedures approved by the Board. Fair value pricing may 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.

Fair value is that amount that the owner might reasonably expect to receive for the security upon its current sale. Fair value requires consideration of all appropriate factors, including indications of fair value available from pricing services. A fair value price is an estimated price and may vary from the prices used by other mutual funds to calculate their net asset values.

Invesco Aim may use indications of fair value from pricing services approved by the Board. In other circumstances, the Invesco Aim Valuation Committee may fair value securities in good faith using procedures approved by the Board. As a means of evaluating its fair value process, Invesco Aim routinely compares closing market prices, the next day's opening prices for the security in its primary market if available, and indications of fair value from other sources. Fair value pricing methods and pricing services can change from time to time as approved by the Board.

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, Invesco Aim 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 Invesco Aim determines, in its judgment, is likely to have affected the closing price of a foreign security, it will price the security at fair value. Invesco Aim 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 Invesco Aim believes, at the approved degree of certainty, that the price is not reflective of current market value, Invesco Aim 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.

THE AIM FUNDS

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. 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. 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 Invesco Aim valuation committee will fair value the security using procedures approved by the Board.

Short-term Securities. The funds' short-term investments are valued at amortized cost when the security has 60 days or less to maturity. AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio value all their securities at amortized cost. AIM High Income Municipal Fund, AIM Municipal Bond Fund and AIM Tax-Free Intermediate Fund 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.

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. To the extent 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.

Each fund 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. AIM Money Market Fund also determines its net asset value as of 12:00 noon Eastern Time on each business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio determine the net asset value of their shares every fifteen minutes on each business day, beginning at 8:00 a.m. Eastern Time. The last net asset value determination on any business day for Premier Portfolio and Premier U.S. Government Money Portfolio will generally occur at 5:30 p.m. Eastern Time, and the last net asset value determination on any business day for Premier Tax-Exempt Portfolio will generally occur at 4:30 p.m. Eastern Time. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio are authorized not to open for trading on a day that is otherwise a business day if the Federal Reserve Bank of New York and the Bank of New York, the fund's custodian, are not open for business or the Securities Industry and Financial Markets Association (SIFMA) recommends that government securities dealers not open for trading and any such day will not be considered a business day. Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio also may close early on a business day if SIFMA recommends that government securities dealers close early. If Premier Portfolio, Premier Tax-Exempt Portfolio or Premier U.S. Government Money Portfolio uses its discretion to close early on a business day, the last net asset value calculation will occur as of the time of such closing.

From time to time and in circumstances deemed appropriate by Invesco Aim in its sole discretion, each of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio may remain open for business, during customary business day hours, on a day that the NYSE is closed for business. In such event, on such day you will be permitted to purchase or redeem shares of such funds and net asset values will be calculated for such funds.

TIMING OF ORDERS

For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day prior to the close of the customary trading session or any earlier NYSE closing time that day. For funds other than Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, purchase orders that are received and accepted before the close of the customary trading session or any earlier NYSE closing time on a business day generally are processed that day and settled on the next business day.

For Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio, you can purchase or redeem shares on each business day, prior to the last net asset value determination on such business day; however, if your order is received and accepted after the close of the customary trading session or any earlier NYSE closing time that day, your order generally will be processed on the next business day and settled on the second business day following the receipt and acceptance of your order.

For all funds, you can exchange shares on each business day, prior to the close of the customary trading session or any earlier NYSE closing time that day. Shareholders of Premier Portfolio, Premier Tax-Exempt Portfolio and Premier U.S. Government Money Portfolio therefore cannot exchange their shares after the close of the customary trading session or any earlier NYSE closing time on a particular day, even though these funds remain open after such closing time.

The funds price purchase, exchange and redemption orders at the net asset value calculated after the transfer agent receives an order in good order. Any applicable sales charges are applied at the time an order is processed. A fund may postpone the right of redemption only under unusual circumstances, as allowed by the Securities and Exchange Commission, such as when the NYSE restricts or suspends trading.

THE AIM FUNDS

TAXES

In general, if you are a taxable investor, dividends and distributions you receive are taxable as ordinary income or long-term capital gains for federal income tax purposes. This is true 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 each fund during the prior year. Investors should read the information under the heading "Other Information--Special Tax Information Regarding the Fund" where applicable in the fund's prospectus. In addition, investors in taxable accounts should be aware of the following basic tax points:

- Distributions of net short-term capital gains are taxable to you as ordinary income. A fund that is expected to have higher turnover than that of other funds is more likely to generate short-term gain or loss.

- 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.

- If you are an individual and meet certain holding period requirements, a portion of income dividends paid by a fund may be designated as qualified dividend income eligible for taxation at long-term capital gain rates. These reduced rates generally are available for dividends paid by a fund out of dividends earned on the 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.

- 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 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.

- If you invest in a fund shortly before it makes a capital gains distribution, the distribution will lower the value of the fund's shares by the amount of the distribution and, in effect, you will receive some of your investment back in the form of a taxable distribution. This is sometimes referred to as "buying a dividend."

- 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 28% of any distributions or proceeds paid.

- 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 as a foreign tax credit. 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.

The preceding discussion concerning the taxability of fund dividends and distributions and of redemptions and exchanges of fund shares is inapplicable to investors that are generally exempt from federal income tax, such as retirement plans that are qualified under Section 401, 403, 408, 408A and 457 of the Code, individual retirement accounts (IRAs) and Roth IRAs. You should consult your tax advisor before investing in a fund.

PAYMENTS TO FINANCIAL ADVISORS

The financial advisor 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 Aim Distributors or one or more of its corporate affiliates (collectively, Invesco Aim Affiliates) may make additional cash payments to financial advisors 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 Aim Affiliates make these payments from their own resources, from Invesco Aim Distributors' retention of initial sales charges and from payments to Invesco Aim Distributors made by the funds under their 12b-1 plans. In this context, "financial advisors" include any broker, dealer, bank (including bank trust departments), registered investment advisor, financial planner, retirement plan administrator and any other financial intermediary having a selling, administration or similar agreement with Invesco Aim Affiliates.

Invesco Aim Affiliates make payments as incentives to certain financial advisors to promote and sell shares of the funds. The benefits Invesco Aim Affiliates receive when they make these payments include, among other things, placing the funds on the financial advisor's funds sales system, and access (in some cases on a preferential basis over other competitors) to individual members of the financial advisor's sales force or to the financial advisor's management. These payments are sometimes referred to as "shelf space" payments because the payments compensate the financial advisor for including the funds in its fund sales system (on its "sales shelf"). Invesco Aim Affiliates compensate financial advisors differently depending typically on the level and/or type of considerations provided by the financial advisor. The payments Invesco Aim 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% of the public offering price of all shares sold by the financial advisor 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 advisor (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 AIM FUNDS

the funds and Asset-Based Payments primarily create incentives to retain previously sold shares of the funds in investor accounts. Invesco Aim Affiliates may pay a financial advisor either or both Sales-Based Payments and Asset-Based Payments.

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

Invesco Aim Affiliates also may make payments to certain financial advisors 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 Aim 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 Statement of Additional Information about these payments and the services provided by financial advisors. In certain cases these payments could be significant to the financial advisor. Your financial advisor may charge you additional fees or commissions other than those disclosed in this prospectus. You can ask your financial advisor about any payments it receives from Invesco Aim Affiliates or the funds, as well as about fees and/or commissions it charges.

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. 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 advisor believes the change would be in the best interests of long-term shareholders.

The Invesco Aim Affiliates currently use the following tools designed to discourage excessive short-term trading in the retail funds:

- Trade activity monitoring.

- Trading guidelines.

- Redemption fees on trades in certain funds.

- 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 Aim 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.

Some investments in the funds are made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and some investments are made indirectly through products that use the funds as underlying investments, such as employee benefit plans, funds of funds, qualified tuition plans, and variable insurance contracts (these products are generally referred to as conduit investment vehicles). If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary account or conduit investment vehicle may be considered an individual shareholder of the funds for purposes of assessing redemption fees. In these cases, the funds are likely to be limited in their ability to assess redemption fees on transactions initiated by individual investors, and the applicability of redemption fees will be determined based on the aggregate holdings and redemptions of the intermediary account or the conduit investment vehicle.

If shares of the funds are held in an account maintained by an intermediary or in the name of a conduit investment vehicle (and not in the names of individual investors), the intermediary or conduit investment vehicle may impose rules intended to limit short-term money movements in and out of the funds which differ from those described in this prospectus. In such cases, there may be redemption fees imposed by the intermediary or conduit investment vehicle on different terms (and subject to different exceptions) than those set forth above. Please consult your financial advisor or other intermediary for details.

Money Market Funds. The Board of AIM Money Market Fund, AIM Tax-Exempt Cash Fund, Premier Portfolio, Premier Tax-Exempt Portfolio and 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 Board 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 Board does 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; investors must perceive an investment in such funds as an alternative to cash, and must be able to purchase and redeem shares regularly and frequently.

THE AIM FUNDS

- 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.

- 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, there are no price arbitrage opportunities.

- Because the money market funds seek to maintain a constant net asset value, investors expect to receive upon redemption the amount they originally invested in such funds. Imposition of redemption fees would run contrary to investor expectations.

AIM Limited Maturity Treasury Fund. The Board of AIM Limited Maturity Treasury Fund has not adopted any policies and procedures that would limit frequent purchases and redemptions of such fund's shares. The Board 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 AIM Limited Maturity Treasury 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, AIM Limited Maturity Treasury Fund's yield could be negatively impacted.

The Board does not believe that it is appropriate to adopt any such policies and procedures for the fund for the following reasons:

- Many investors use AIM Limited Maturity Treasury Fund as a short-term investment alternative and should be able to purchase and redeem shares regularly and frequently.

- One of the advantages of AIM Limited Maturity Treasury Fund as compared to other investment options is liquidity. Any policy that diminishes the liquidity of AIM Limited Maturity Treasury Fund will be detrimental to the continuing operations of such fund.

TRADE ACTIVITY MONITORING

Invesco Aim 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 Aim 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 Aim Affiliates will use reasonable efforts to apply the fund's policies uniformly given the practical limitations described above.

The ability of Invesco Aim 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 severely limited or non-existent.

TRADING GUIDELINES

If you exceed four exchanges out of a fund per calendar year (other than the money market funds and AIM Limited Maturity Treasury Fund), or a fund or an Invesco Aim Affiliate determines, in its sole discretion, that your short-term trading activity is excessive (regardless of whether or not you exceed such guidelines), it may, in its discretion, reject any additional purchase and exchange orders.

The ability of Invesco Aim Affiliates to monitor exchanges made through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent. If shares of the funds are held in the name of a conduit investment vehicle and not in the names of the individual investors who have invested in the funds through the conduit investment vehicle, the conduit investment vehicle may be considered an individual shareholder of the funds. To the extent that a conduit investment vehicle is considered an individual shareholder of the funds, the funds are likely to be limited in their ability to impose exchange limitations on individual transactions initiated by investors who have invested in the funds through the conduit investment vehicle.

REDEMPTION FEES

You may be charged a 2% redemption fee if you redeem, including redeeming by exchange, shares of certain funds within 31 days of purchase. The ability of a fund to assess a redemption fee on redemptions effectuated through accounts that are maintained by intermediaries (rather than the funds' transfer agent) and through conduit investment vehicles may be severely limited or non-existent.

FAIR VALUE PRICING

Securities owned by a fund 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. Fair value pricing may 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.

More information may be obtained free of charge upon request. The Statement of Additional Information (SAI), a current version of which is on file with the Securities and Exchange Commission (SEC), contains more details about the fund and is incorporated by reference into the prospectus (is legally a part of the prospectus). Annual and semiannual reports to shareholders contain additional information about the fund's investments. The fund's annual report also discusses the market conditions and investment strategies that significantly affected the fund's performance during its last fiscal year. The fund also files its complete schedule of portfolio holdings with the SEC for the 1st and 3rd quarters of each fiscal year on Form N-Q. The fund's most recent portfolio holdings, as filed on Form N-Q, are also available at http://www.invescoaim.com.

If you have questions about this fund, another fund in The AIM Family of Funds-- Registered Trademark-- or your account, or wish to obtain free copies of the fund's current SAI or annual or semiannual reports, please contact us by mail at Invesco Aim Investment Services, Inc., P.O. Box 4739, Houston, TX 77210-4739 or

BY TELEPHONE:        (800) 959-4246

ON THE INTERNET:     You can send us a request by e-mail or download prospectuses, SAIs,
                     annual or semiannual reports via our website: http://www.invescoaim.com

You can also review and obtain copies of the fund's SAI, financial reports, the fund's Forms N-Q and other information at the SEC's Public Reference Room in Washington, DC; on the EDGAR database on the SEC's Internet website (http://www.sec.gov); or, after paying a duplicating fee, by sending a letter to the SEC's Public Reference Section, Washington, DC 20549-0102 or by sending an electronic mail request to publicinfo@sec.gov. Please call the SEC at 1-202-942- 8090 for information about the Public Reference Room.

invescoaim.com  MCCE-PRO-1

                                                 [INVESCO AIM LOGO APPEARS HERE]
                                                       --Service Mark--

                                                    AIM MODERATE ALLOCATION FUND

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                                                                     PROSPECTUS
                                                              ------------------

                                                                October 3, 2008

AIM Moderate Allocation Fund's investment objective is to provide total return consistent with a moderate level of risk relative to the broad stock market.

This prospectus contains important information about the Class A, B, C, R and Y shares of the fund. Please read it before investing and keep it for future reference.

As with all other mutual fund securities, the Securities and Exchange Commission has not approved or disapproved these securities or determined whether the information in this prospectus is adequate or accurate. Anyone who tells you otherwise is committing a crime.

An investment in the fund:
- is not FDIC insured;
- may lose value; and
- is not guaranteed by a bank.

RISK/RETURN SUMMARY                          1
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PERFORMANCE INFORMATION                      1
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Annual Total Returns                         1
Performance Table                            2
FEE TABLE AND EXPENSE EXAMPLE                2
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Fee Table                                    2
Expense Example                              3
HYPOTHETICAL INVESTMENT AND EXPENSE
  INFORMATION                                4

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INVESTMENT OBJECTIVE, STRATEGIES AND
  RISKS                                      5
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Objective and Strategies                     5
Risks                                        5
DISCLOSURE OF PORTFOLIO HOLDINGS             8
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FUND MANAGEMENT                              8
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The Advisors                                 8
Advisor Compensation                         9
Portfolio Manager                            9
OTHER INFORMATION                            9
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Sales Charges                                9
Dividends and Distributions                  9
FINANCIAL HIGHLIGHTS                        10
- - - - - - - - - - - - - - - - - - - - - - - -
GENERAL INFORMATION                        A-1
- - - - - - - - - - - - - - - - - - - - - - - -
Choosing a Share Class                     A-1
Share Class Eligibility                    A-2
Distribution and Service (12b-1) Fees      A-2
Initial Sales Charges (Class A Shares
  Only)                                    A-3
Contingent Deferred Sales Charges
  (CDSCs)                                  A-4
Redemption Fees                            A-6
Purchasing Shares                          A-6
Redeeming Shares                           A-8
Exchanging Shares                          A-9
Rights Reserved by the Funds              A-11
Pricing of Shares                         A-11
Taxes                                     A-13
Payments to Financial Advisors            A-13
Excessive Short-Term Trading Activity
  (Market Timing) Disclosures             A-14
OBTAINING ADDITIONAL INFORMATION    Back Cover
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The AIM Family of Funds, AIM and Design, AIM, AIM Funds, AIM Funds and Design, AIM Investments, AIM Investor, AIM Lifetime America, AIM LINK, AIM Institutional Funds, aimfunds.com, La Familia AIM de Fondos, La Familia AIM de Fondos and Design, Invierta con DISCIPLINA, Invest with DISCIPLINE, The AIM College Savings Plan, AIM Solo 401(k), AIM Investments and Design and Your goals. Our solutions. are registered service marks and AIM Bank Connection, AIM Internet Connect, AIM Private Asset Management, AIM Private Asset Management and Design, AIM Stylized and/or Design, AIM Alternative Assets and Design and myaim.com are service marks of Invesco Aim Management Group, Inc. AIM Trimark is a registered service mark of Invesco Aim Management Group, Inc. and Invesco Trimark Ltd.

No dealer, salesperson or any other person has been authorized to give any information or to make any representations other than those contained in this prospectus, and you should not rely on such other information or representations.

The fund's investment objective is to provide total return consistent with a moderate level of risk relative to the broad stock market.

The fund is a "fund of funds," and invests its assets in other underlying mutual funds advised by Invesco Aim Advisors, Inc. (the advisor or Invesco Aim). The fund seeks to meet its objective by building a portfolio of mutual fund investments that has a moderate level of risk relative to the S&P 500 Index. The fund's target allocation is to invest 60% of its total assets in underlying funds that invest primarily in equity securities and 40% of its total assets in underlying funds that invest primarily in fixed-income securities.

The fund's investment performance depends on the investment performance of the underlying funds in which it invests. Therefore, the risks associated with an investment in a fund of funds, such as the fund, are also the risks associated with an investment in the underlying funds.

Among the principal risks of investing in the fund and the underlying funds, which could adversely affect the fund's net asset value, yield and total return are:

Fund of Funds Risk             U.S. Government Obligations Risk    Currency/Exchange Rate Risk           Reinvestment Risk
Market Risk                    High Yield Risk                     Management Risk                       Dollar Roll
Equity Securities Risk         Mortgage- and Asset-Backed          Growth Investing Risk                   Transaction Risk
Foreign Securities Risk          Securities Risk                   Value Investing Risk                  Risks Relating to
Convertible Securities Risk    Derivatives Risk                    Non-Diversification Risk                Banking and Financial
Interest Rate Risk             Leverage Risk                       High-Coupon U.S. Government Agency      Services Industries
Credit Risk                    Active Trading Risk                   Mortgage-Backed Securities Risk

Please see "Investment Objective, Strategies and Risks" for a description of these risks.

There is a risk that you could lose all or a portion of your investment in the fund and that the income that you receive from the fund may vary. The value of your investment in the fund will go up and down with the prices of the securities held by the underlying funds in which the fund invests.

An investment in the fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.