(a) The Report to Shareholders is attached herewith.

BlackRock Core Bond Trust (BHK)

BlackRock Corporate High Yield Fund, Inc. (HYT)

BlackRock Credit Allocation Income Trust (BTZ)

BlackRock Floating Rate Income Trust (BGT)

Supplemental Information  (unaudited)

Section 19(a) Notices

BlackRock Core Bond Trust’s (BHK), BlackRock Corporate High Yield Fund, Inc.’s (HYT), BlackRock Credit Allocation Income Trust’s (BTZ) and BlackRock Floating Rate Income Trust’s (BGT) (collectively the “Trusts”, or individually a “Trust”) amounts and sources of distributions reported are estimates and are being provided to you pursuant to regulatory requirements and are not being provided for tax reporting purposes. The actual amounts and sources for tax reporting purposes will depend upon each Trust’s investment experience during its fiscal year and may be subject to changes based on tax regulations. Each Trust will provide a Form 1099-DIV each calendar year that will tell you how to report these distributions for U.S. federal income tax purposes.

December 31, 2020

Section 19(a) notices for the Trusts, as applicable, are available on the BlackRock website at blackrock.com.

Section 19(b) Disclosure

On September 5, 2019, the Trusts, acting pursuant to a U.S. Securities and Exchange Commission (“SEC”) exemptive order and with the approval of each Trust’s Board of Trustees or Directors, as applicable (the “Board”), each have adopted a managed distribution plan, consistent with its investment objectives and policies to support a level distribution of income, capital gains and/or return of capital (the “Plan”). In accordance with the Plans, starting in October 2019, the Trusts currently distribute the following fixed amounts per share on a monthly basis:

The fixed amounts distributed per share are subject to change at the discretion of each Trust’s Board. Under its Plan, each Trust will distribute all available investment income to its shareholders as required by the Internal Revenue Code of 1986, as amended (the “Code”). If sufficient income (inclusive of net investment income and short-term capital gains) is not earned on a monthly basis, the Trusts will distribute long-term capital gains and/or return of capital to shareholders in order to maintain a level distribution. Each monthly distribution to shareholders is expected to be at the fixed amount established by the Board; however, each Trust may make additional distributions from time to time, including additional capital gain distributions at the end of the taxable year, if required to meet requirements imposed by the Code and/or the Investment Company Act of 1940, as amended (the “1940 Act”).

Shareholders should not draw any conclusions about each Trust’s investment performance from the amount of these distributions or from the terms of the Plan. Each Trust’s total return performance is presented in its financial highlights table.

The Board may amend, suspend or terminate a Trust’s Plan at any time without prior notice to the Trust’s shareholders if it deems such actions to be in the best interests of the Trust or its shareholders. The suspension or termination of the Plan could have the effect of creating a trading discount (if the Trust’s stock is trading at or above net asset value) or widening an existing trading discount. The Trusts are subject to risks that could have an adverse impact on their ability to maintain level distributions. Examples of potential risks include, but are not limited to, economic downturns impacting the markets, changes in interest rates, decreased market volatility, companies suspending or decreasing corporate dividend distributions and changes in the Code.

Table of Contents

The Benefits and Risks of Leveraging

The Trusts may utilize leverage to seek to enhance the distribution rate on, and net asset value (“NAV”) of, their common shares (“Common Shares”). However, there is no guarantee that these objectives can be achieved in all interest rate environments.

In general, the concept of leveraging is based on the premise that the financing cost of leverage, which is based on short-term interest rates, is normally lower than the income earned by a Trust on its longer-term portfolio investments purchased with the proceeds from leverage. To the extent that the total assets of each Trust (including the assets obtained from leverage) are invested in higher-yielding portfolio investments, each Trust’s shareholders benefit from the incremental net income. The interest earned on securities purchased with the proceeds from leverage (after paying the leverage costs) is paid to shareholders in the form of dividends, and the value of these portfolio holdings (less the leverage liability) is reflected in the per share NAV.

To illustrate these concepts, assume a Trust’s capitalization is $100 million and it utilizes leverage for an additional $30 million, creating a total value of $130 million available for investment in longer-term income securities. If prevailing short-term interest rates are 3% and longer-term interest rates are 6%, the yield curve has a strongly positive slope. In this case, a Trust’s financing costs on the $30 million of proceeds obtained from leverage are based on the lower short-term interest rates. At the same time, the securities purchased by a Trust with the proceeds from leverage earn income based on longer-term interest rates. In this case, a Trust’s financing cost of leverage is significantly lower than the income earned on a Trust’s longer-term investments acquired from such leverage proceeds, and therefore the holders of Common Shares (“Common Shareholders”) are the beneficiaries of the incremental net income.

However, in order to benefit shareholders, the return on assets purchased with leverage proceeds must exceed the ongoing costs associated with the leverage. If interest and other costs of leverage exceed a Trust’s return on assets purchased with leverage proceeds, income to shareholders is lower than if a Trust had not used leverage. Furthermore, the value of the Trusts’ portfolio investments generally varies inversely with the direction of long-term interest rates, although other factors can influence the value of portfolio investments. In contrast, the amount of each Trust’s obligations under its leverage arrangement generally does not fluctuate in relation to interest rates. As a result, changes in interest rates can influence the Trusts’ NAVs positively or negatively. Changes in the future direction of interest rates are very difficult to predict accurately, and there is no assurance that a Trust’s intended leveraging strategy will be successful.

The use of leverage also generally causes greater changes in each Trust’s NAV, market price and dividend rates than comparable portfolios without leverage. In a declining market, leverage is likely to cause a greater decline in the NAV and market price of a Trust’s shares than if the Trust were not leveraged. In addition, each Trust may be required to sell portfolio securities at inopportune times or at distressed values in order to comply with regulatory requirements applicable to the use of leverage or as required by the terms of leverage instruments, which may cause the Trust to incur losses. The use of leverage may limit a Trust’s ability to invest in certain types of securities or use certain types of hedging strategies. Each Trust incurs expenses in connection with the use of leverage, all of which are borne by shareholders and may reduce income to the shareholders. Moreover, to the extent the calculation of each Trust’s investment advisory fees includes assets purchased with the proceeds of leverage, the investment advisory fees payable to each Trust’s investment adviser will be higher than if the Trusts did not use leverage.

Each Trust may utilize leverage through a credit facility or reverse repurchase agreements as described in the Notes to Financial Statements, if applicable.

Under the Investment Company Act of 1940, as amended (the “1940 Act”), each Trust is permitted to issue debt up to 33 1/3% of its total managed assets. A Trust may voluntarily elect to limit its leverage to less than the maximum amount permitted under the 1940 Act.

If a Trust segregates or designates on its books and records cash or liquid assets having a value not less than the value of a Trust’s obligations under a reverse repurchase agreement (including accrued interest) then such transaction is not considered a senior security and is not subject to the foregoing limitations and requirements imposed by the 1940 Act.

Derivative Financial Instruments

The Trusts may invest in various derivative financial instruments. These instruments are used to obtain exposure to a security, commodity, index, market, and/or other assets without owning or taking physical custody of securities, commodities and/or other referenced assets or to manage market, equity, credit, interest rate, foreign currency exchange rate, commodity and/or other risks. Derivative financial instruments may give rise to a form of economic leverage and involve risks, including the imperfect correlation between the value of a derivative financial instrument and the underlying asset, possible default of the counterparty to the transaction or illiquidity of the instrument. The Trusts’ successful use of a derivative financial instrument depends on the investment adviser’s ability to predict pertinent market movements accurately, which cannot be assured. The use of these instruments may result in losses greater than if they had not been used, may limit the amount of appreciation a Trust can realize on an investment and/or may result in lower distributions paid to shareholders. The Trusts’ investments in these instruments, if any, are discussed in detail in the Notes to Financial Statements.

Investment Objective

BlackRock Core Bond Trust’s (BHK) (the “Trust”) investment objective is to provide current income and capital appreciation. The Trust seeks to achieve its investment objective by investing at least 75% of its managed assets in bonds that are investment grade quality at the time of investment. The Trust’s investments will include a broad range of bonds, including corporate bonds, U.S. government and agency securities and mortgage-related securities. The Trust may invest up to 25% of its total managed assets in bonds that at the time of investment are rated Ba/BB or below by Moody’s Investors Service, Inc. (“Moody’s”), S&P Global Ratings, Fitch Ratings (“Fitch”) or another nationally recognized rating agency or bonds that are unrated but judged to be of comparable quality by the investment adviser. The Trust may invest up to 10% of its managed assets in bonds issued in foreign currencies. The Trust may invest directly in such securities or synthetically through the use of derivatives.

No assurance can be given that the Trust’s investment objective will be achieved.

Market Price and Net Asset Value History for the Past Five Years

Performance results may include adjustments made for financial reporting purposes in accordance with U.S. generally accepted accounting principles. Past performance is not indicative of future results.

BHK is presenting the Reference Benchmark to accompany trust performance. The Reference Benchmark is presented for informational purposes only, as the Trust is actively managed and does not seek to track or replicate the performance of the Reference Benchmark or any other index. The portfolio investments of the Trust may differ substantially from the securities that comprise the indices within the Reference Benchmark, which may cause the Trust’s performance to differ materially from that of the Reference Benchmark. The Trust employs leverage as part of its investment strategy, which may change over time at the discretion of BlackRock Advisors, LLC (the “Manager”) as market and other conditions warrant. In contrast, the Reference Benchmark is not adjusted for leverage. Therefore, leverage generally may result in the Trust outperforming the Reference Benchmark in rising markets and underperforming in declining markets. The Board considers additional factors to evaluate the Trust’s performance, such as the performance of the Trust relative to a peer group of funds, a leverage-adjusted benchmark and/or other information provided by the Manager.

More information about the Trust’s historical performance can be found in the “Closed End Funds” section of blackrock.com.

The following discussion relates to the Trust’s absolute performance based on NAV:

What factors influenced performance?

Positive contributors to the Trust’s absolute performance over the period included its allocation to U.S. Treasuries, which benefited as interest rates declined over the period. Exposure to both investment grade and high yield corporate bonds also contributed positively as credit sentiment rebounded based on supportive policy after the market dislocation seen in the first quarter of 2020. Finally, returns for securitized assets including, 30-year pass-through mortgage-backed securities (“MBS”) and asset-backed securities (“ABS”) were also positive.

The principal detractors from the Trust’s absolute performance were its exposures to commercial mortgage-backed securities (“CMBS”), private investments and the Trust’s cash position.

Describe recent portfolio activity.

Over the reporting period, the Trust increased exposure to ABS, emerging market debt, non-dollar exposures, non-agency adjustable rate mortgages and collateralized mortgage obligations (“CMOs”). Over the same period, the Trust trimmed exposure to CMBS, 30-year MBS pass throughs, agency CMOs, and U.S. Treasuries.

Describe portfolio positioning at period end.

At period end, the Trust maintained a diversified exposure within non-government spread sectors, including investment grade corporate credit, high yield corporate credit, CMBS, ABS and emerging market debt. The Trust also held exposure to government-related sectors such as 30-year MBS pass-throughs, agency CMOs and U.S. agency securities.

The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.

Investment Objective

BlackRock Corporate High Yield Fund, Inc.’s (HYT) (the “Trust”) primary investment objective is to provide shareholders with current income. The Trust’s secondary investment objective is to provide shareholders with capital appreciation. The Trust seeks to achieve its objectives by investing primarily in a diversified portfolio of fixed income securities which are rated at the time of investment to be below investment grade or, if unrated, are considered by the investment adviser to be of comparable quality. The Trust may invest directly in fixed income securities or synthetically through the use of derivatives.

No assurance can be given that the Trust’s investment objective will be achieved.

Performance results may include adjustments made for financial reporting purposes in accordance with U.S. generally accepted accounting principles. Past performance is not indicative of future results.

HYT is presenting the Reference Benchmark to accompany trust performance. The Reference Benchmark is presented for informational purposes only, as the Trust is actively managed and does not seek to track or replicate the performance of the Reference Benchmark or any other index. The portfolio investments of the Trust may differ substantially from the securities that comprise the indices within the Reference Benchmark, which may cause the Trust’s performance to differ materially from that of the Reference Benchmark. The Trust employs leverage as part of its investment strategy, which may change over time at the discretion of the Manager as market and other conditions warrant. In contrast, the Reference Benchmark is not adjusted for leverage. Therefore, leverage generally may result in the Trust outperforming the Reference Benchmark in rising markets and underperforming in declining markets. The Board considers additional factors to evaluate the Trust’s performance, such as the performance of the Trust relative to a peer group of funds, a leverage-adjusted benchmark and/or other information provided by the Manager.

More information about the Trust’s historical performance can be found in the “Closed End Funds” section of blackrock.com.

The following discussion relates to the Trust’s absolute performance based on NAV:

What factors influenced performance?

High-yield bonds delivered strong returns in 2020. Although the market fell sharply in the first quarter of 2020 due to the emergence of COVID-19, the Fed responded by cutting short-term interest rates to zero and pledging to support the corporate bond market through direct purchases. The high-yield market rebounded quickly in response, and the rally carried through until year end due to the combination of better-than-expected economic growth and the approval of a coronavirus vaccine in November 2020.

The technology, wireless and automotive sectors were the leading contributors to the Trust’s absolute performance in 2020. By credit rating, BB and BBB rated debt made the largest contributions. The Trust had a tactical allocation to investment grade bonds, which also aided results.

The oil field services, finance and refining sectors were the largest detractors from absolute performance. From an asset allocation perspective, positions in preferred stocks detracted from returns. The Trust used derivatives—including credit default swaps and total return swaps—to manage its positioning. This aspect of its strategy was also a minor detractor.

Describe recent portfolio activity.

While the Trust’s key positioning themes remained broadly consistent, the investment adviser used tactical sector- and issuer-level positioning to take advantage of market opportunities. The investment adviser increased the portfolio’s allocation to investment grade-bonds. At the sector level, the Trust increased its allocation to independent energy issues.

Describe portfolio positioning at period end.

The Trust was underweight in BB rated issues and overweight in select CCCs. With that said, the Trust maintained an underweight in the highest-yielding portion of the market with the largest concentration of distressed assets. The Trust’s allocation to investment grade corporate bonds stood at about 13%. The investment adviser continued to invest a portion of the portfolio in floating rate loan interests, which it believed were attractively valued relative to high yield. These senior/secured assets, while experiencing a recovery, did not bounce back to the same extent as high-yield issues – indicating a possible value opportunity. The largest sector overweight positions included technology, cable/satellite and banking, while food & beverage, finance companies and retailers were the largest underweights.

The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.

Investment Objective

BlackRock Credit Allocation Income Trust’s (BTZ) (the “Trust”) investment objective is to provide current income, current gains and capital appreciation. The Trust seeks to achieve its investment objective by investing, under normal market conditions, at least 80% of its assets in credit-related securities, including, but not limited to, investment grade corporate bonds, high yield bonds (commonly referred to as “junk” bonds), bank loans, preferred securities or convertible bonds or derivatives with economic characteristics similar to these credit-related securities. The Trust may invest directly in such securities or synthetically through the use of derivatives.

No assurance can be given that the Trust’s investment objective will be achieved.

Market Price and Net Asset Value History for the Past Five Years

Performance results may include adjustments made for financial reporting purposes in accordance with U.S. generally accepted accounting principles. Past performance is not indicative of future results.

BTZ is presenting the Reference Benchmark to accompany trust performance. The Reference Benchmark is presented for informational purposes only, as the Trust is actively managed and does not seek to track or replicate the performance of the Reference Benchmark or any other index. The portfolio investments of the Trust may differ substantially from the securities that comprise the indices within the Reference Benchmark, which may cause the Trust’s performance to differ materially from that of the Reference Benchmark. The Trust employs leverage as part of its investment strategy, which may change over time at the discretion of BlackRock Advisors, LLC (the “Manager”) as market and other conditions warrant. In contrast, the Reference Benchmark is not adjusted for leverage. Therefore, leverage generally may result in the Trust outperforming the Reference Benchmark in rising markets and underperforming in declining markets. The Board considers additional factors to evaluate the Trust’s performance, such as the performance of the Trust relative to a peer group of funds, a leverage-adjusted benchmark and/or other information provided by the Manager.

More information about the Trust’s historical performance can be found in the “Closed End Funds” section of blackrock.com.

The following discussion relates to the Trust’s absolute performance based on NAV:

What factors influenced performance?

Exposure to global credit markets broadly added to performance over the period as spreads tightened and yields declined. Positive contributors to performance included allocations to U.S. investment grade and high yield corporate bonds, capital securities, European investment grade and high yield corporate bonds, emerging market debt, floating rate loan interests and collateralized loan obligations (“CLOs”). Positioning with respect to portfolio duration and corresponding interest rate sensitivity also contributed.

Detractors were limited over the period, as both risk and defensive assets performed well, although strategies to manage risk weighed on performance.

In addition to employing leverage, the Trust used derivatives as part of its investment strategy, including forward contracts to manage foreign currency exposure of non-U.S. positions back to U.S. dollars and interest rate futures to adjust duration positioning tactically as needed. The use of derivatives over the 12-month period had a positive impact on performance, as the use of leverage to gain access to credit sectors outweighed strategies to other holdings within the portfolio.

Describe recent portfolio activity.

The Trust increased leverage over the period. The Trust reduced exposure to U.S. investment grade corporate bonds while increasing allocations to U.S. high yield corporate bonds and non-U.S. credit markets including Europe and Asia.

Describe portfolio positioning at period end.

The Trust was positioned constructively with respect to risk assets given the potential for further stimulus, the continued rebound in growth and the global demand for yield, all of which should be supportive of credit markets. With this backdrop, the Trust maintained core allocations to U.S. high yield corporate bonds, U.S. investment grade corporate bonds and capital securities, with exposure to CLOs and non-U.S. credit markets as well.

The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.

Investment Objective

BlackRock Floating Rate Income Trust’s (BGT) (the “Trust”) primary investment objective is to provide a high level of current income. The Trust’s secondary investment objective is to seek the preservation of capital to the extent consistent with its primary objective of high current income. The Trust seeks to achieve its investment objectives by investing primarily, under normal conditions, at least 80% of its assets in floating and variable rate instruments of U.S. and non-U.S. issuers, including a substantial portion of its assets in senior secured floating rate loans made to corporate and other business entities. Under normal market conditions, the Trust expects that the average effective duration of its portfolio will be no more than 1.5 years. The Trust may invest directly in such securities or synthetically through the use of derivatives.

No assurance can be given that the Trust’s investment objective will be achieved.

Market Price and Net Asset Value History for the Past Five Years

Performance results may include adjustments made for financial reporting purposes in accordance with U.S. generally accepted accounting principles. Past performance is not indicative of future results.

BGT is presenting the Reference Benchmark to accompany trust performance. The Reference Benchmark is presented for informational purposes only, as the Trust is actively managed and does not seek to track or replicate the performance of the Reference Benchmark or any other index. The portfolio investments of the Trust may differ substantially from the securities that comprise the indices within the Reference Benchmark, which may cause the Trust’s performance to differ materially from that of the Reference Benchmark. The Trust employs leverage as part of its investment strategy, which may change over time at the discretion of BlackRock Advisors, LLC (the “Manager”) as market and other conditions warrant. In contrast, the Reference Benchmark is not adjusted for leverage. Therefore, leverage generally may result in the Trust outperforming the Reference Benchmark in rising markets and underperforming in declining markets. The Board considers additional factors to evaluate the Trust’s performance, such as the performance of the Trust relative to a peer group of funds, a leverage-adjusted benchmark and/or other information provided by the Manager.

More information about the Trust’s historical performance can be found in the “Closed End Funds” section of blackrock.com.

The following discussion relates to the Trust’s absolute performance based on NAV:

What factors influenced performance?

After falling sharply in the first calendar quarter of 2020 due to the emergence of COVID-19, the floating rate loan interest (“bank loan”) market recovered to finish 2020 with positive returns. As was the case with other credit-oriented segments of the bond market, loans were helped by the combination of aggressive fiscal and monetary stimulus, better-than-expected economic conditions in the second half of the year, and the approval of a coronavirus vaccine in early November 2020.

From an asset allocation perspective, the Trust’s core exposure to bank loans and tactical allocations to investment grade and high yield corporate bonds contributed to performance. By sector, the largest contributors included technology, cable/satellite and automotive. With respect to credit tiers, the Trust’s B rated positions were the leading contributors to absolute returns, followed by CCCs and BBBs.

At the sector level, the largest detractors from performance included energy, lodging and aerospace/defense. By rating class, BB rated issues were the sole detractor.

Describe recent portfolio activity.

The investment adviser increased the Trust’s allocation to high yield and investment grade bonds throughout the year due to the supportive technicals and attractive relative values in these areas. The investment adviser’s credit rating views remained relatively consistent over the past several quarters, focusing on higher-quality B rated issues and avoiding the more volatile, stressed CCC category. The investment adviser tactically managed the Trust’s sector positioning, although it placed a greater focus on individual security selection later in the period. The Trust continued to use liquid, index-based derivatives in the loan and high-yield markets in order to manage its positioning.

Describe portfolio positioning at period end.

The Trust remained predominately invested in bank loans, with the rest primarily invested in high-yield and investment-grade corporates. By credit rating, B rated loans were the Trust’s largest position, and it had a much smaller weighting in the higher-risk CCC rated segment. Within the single B category, the investment adviser remained focused on higher-quality B+ and B rated debt, with less of an emphasis on securities rated B-.

The investment adviser’s core sector views stayed largely intact. Some of the Trust’s largest sector positions were technology companies, particularly in the enterprise software business. Health care, cable/satellite and building materials were also areas where the investment adviser identified compelling risk-reward opportunities. The investment adviser slightly increased the portfolio’s allocation to sectors with above-average sensitivity to COVID-19 during the second half of the year by participating in new issues in the gaming and airline categories. The investment adviser maintained a lower allocation to energy and the consumer cyclical sectors, such as retailers and leisure, on the belief that these market segments continued to face significant headwinds.

Additionally, the Trust had a bias toward larger loan tranches, as well as to loan/bond capital structures over the loan-only segment. The Trust remained underweight in the 2017 and 2018 vintages, arguably a period with more aggressive lending standards and weaker protections for loan holders.

The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.