BlackRock Municipal Income Fund, Inc. (NYSE:MUI, the "Fund")) has completed the conversion from an exchange-listed closed-end fund to an unlisted continuously-offered interval fund that conducts quarterly repurchases of its shares (the "Conversion") and will operate under the name BlackRock Municipal Credit Alpha Portfolio, Inc. ("Interval Fund").

The below table provides shareholders with information regarding the Net Asset Value (NAV) and conversion ratio for the Funds as of March 21, 2025. Shareholders of record will receive one share of the Institutional Share Class for the Interval Fund for each share of MUI they own.

	NAV	Conversion Ratio
BlackRock Municipal Income Fund, Inc. (MUI)	$13.16	1:1
BlackRock Municipal Credit Alpha Portfolio, Inc., Institutional Class (MUNEX) *	$13.16	-

* MUNEX represents the Institutional Share Class only of BlackRock Municipal Credit Alpha Portfolio, Inc.

Important Notice to Shareholders Who Hold Shares Through a Financial Intermediary

Following the Conversion, the Interval Fund will offer one or more classes of shares through select financial intermediaries. Shareholders should be aware that not all financial intermediaries will offer to sell shares of the Interval Fund or support quarterly repurchase offers by the Interval Fund.

SHAREHOLDERS SHOULD CONTACT THEIR FINANCIAL INTERMEDIARY AS SOON AS POSSIBLE TO CONFIRM WHETHER THEIR INTERMEDIARY WILL SUPPORT QUARTERLY REPURCHASE OFFERS AND WHAT, IF ANY, EFFECT THE CONVERSION WILL HAVE ON THE SHAREHOLDER'S ACCOUNT.

Additional Resources Regarding the Conversion:

PRESS RELEASE – March 3, 2025

BlackRock Municipal Income Fund, Inc. (MUI) Declares Final Distribution as Part of its

Conversion to the Institutional Share Class (MUNEX) of BlackRock Municipal Credit

Alpha Portfolio, Inc.

PRESS RELEASE – February 28, 2025

BlackRock Municipal Income Fund, Inc. (MUI) Announces 2025 Repurchase Schedule

and Initial Repurchase Amount in Connection with Upcoming Conversion to Unlisted

Continuously-Offered Closed-End Fund

PRESS RELEASE – February 14, 2025:

BlackRock Municipal Income Fund, Inc. (MUI) Delists from the NYSE in connection with

the conversion to an unlisted interval fund structure

PRESS RELEASE - November 18, 2024:

BlackRock Municipal Income Fund, Inc. (MUI) Announces Final Results of Tender Offer

SEC Filing – October 16, 2024:

SEC Registration Filing for BlackRock Municipal Credit Alpha Portfolio (MUNEX)

PRESS RELEASE - June 7, 2024:

BlackRock Municipal Income Fund, Inc. (MUI) Approves Conversion to Unlisted Closed-End Interval Fund Structure

Important Notice

This press release is for informational purposes only and shall not constitute a recommendation, an offer to purchase or a solicitation of an offer to sell any common shares of the Fund.

About BlackRock

BlackRock's purpose is to help more and more people experience financial well-being. As a fiduciary to investors and a leading provider of financial technology, we help millions of people build savings that serve them throughout their lives by making investing easier and more affordable. For additional information on BlackRock, please visit www.blackrock.com/corporate

Availability of Fund Updates

BlackRock will update performance and certain other data for the Fund on a monthly basis on its website in the "Closed-end Funds" section of www.blackrock.com as well as certain other material information as necessary from time to time. Investors and others are advised to check the website for updated performance information and the release of other material information about the Fund. This reference to BlackRock's website is intended to allow investors public access to information regarding the Fund and does not, and is not intended to, incorporate BlackRock's website in this release.

Forward-Looking Statements

This press release, and other statements that BlackRock or the Fund may make, may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act, with respect to the Fund's or BlackRock's future financial or business performance, strategies or expectations. Forward-looking statements are typically identified by words or phrases such as "trend," "potential," "opportunity," "pipeline," "believe," "comfortable," "expect," "anticipate," "current," "intention," "estimate," "position," "assume," "outlook," "continue," "remain," "maintain," "sustain," "seek," "achieve," and similar expressions, or future or conditional verbs such as "will," "would," "should," "could," "may" or similar expressions.

BlackRock cautions that forward-looking statements are subject to numerous assumptions, risks and uncertainties, which change over time. Forward-looking statements speak only as of the date they are made, and BlackRock assumes no duty to and does not undertake to update forward-looking statements. Actual results could differ materially from those anticipated in forward-looking statements and future results could differ materially from historical performance.

With respect to the Fund, the following factors, among others, could cause actual events to differ materially from forward-looking statements or historical performance: (1) changes and volatility in political, economic or industry conditions, the interest rate environment, foreign exchange rates or financial and capital markets, which could result in changes in demand for the Fund or in the Fund's net asset value; (2) the relative and absolute investment performance of the Fund and its investments; (3) the impact of increased competition; (4) the unfavorable resolution of any legal proceedings; (5) the extent and timing of any distributions or share repurchases; (6) the impact, extent and timing of technological changes; (7) the impact of legislative and regulatory actions and reforms, and regulatory, supervisory or enforcement actions of government agencies relating to the Fund or BlackRock, as applicable; (8) terrorist activities, international hostilities, health epidemics and/or pandemics and natural disasters, which may adversely affect the general economy, domestic and local financial and capital markets, specific industries or BlackRock; (9) BlackRock's ability to attract and retain highly talented professionals; (10) the impact of BlackRock electing to provide support to its products from time to time; and (11) the impact of problems at other financial institutions or the failure or negative performance of products at other financial institutions.

Annual and Semi-Annual Reports and other regulatory filings of the Fund with the SEC are accessible on the SEC's website at www.sec.gov and on BlackRock's website at www.blackrock.com, and may discuss these or other factors that affect the Fund. The information contained on BlackRock's website is not a part of this press release.

View source version on businesswire.com: https://www.businesswire.com/news/home/20250324463143/en/

1-800-882-0052

BlackRock Municipal Income Fund, Inc. (MUI) Completes Conversion to Interval Fund Structure