ETB Eaton Vance Tax Managed Buy Write Income Fund

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Trustees and Shareholders of Eaton Vance Tax-Managed Buy-Write Income Fund:

In planning and performing our audit of the financial statements of Eaton Vance Tax-Managed Buy-Write Income Fund (the "Fund") as of and for the year ended December 31, 2024, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), we considered the Fund's internal control over financial reporting, including controls over safeguarding securities, as a basis for designing our auditing procedures for the purpose of expressing our opinion on the financial statements and to comply with the requirements of Form N-CEN, but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion.

The management of the Fund is responsible for establishing and maintaining effective internal control over financial reporting. In fulfilling this responsibility, estimates and judgments by management are required to assess the expected benefits and related costs of controls. A fund's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A fund's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the fund; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the fund are being made only in accordance with authorizations of management and trustees of the fund; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of a fund's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

A deficiency in internal control over financial reporting exists when the design or operation of a control does not allow management or employees, in the normal course of performing their assigned functions, to prevent or detect misstatements on a timely basis. A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the fund's annual or interim financial statements will not be prevented or detected on a timely basis.

Our consideration of the Fund's internal control over financial reporting was for the limited purpose described in the first paragraph and would not necessarily disclose all deficiencies in internal control that might be material weaknesses under standards established by the PCAOB. However, we noted no deficiencies in the Fund's internal control over financial reporting and its operation, including controls for safeguarding securities, that we consider to be a material weakness, as defined above, as of December 31, 2024.

This report is intended solely for the information and use of management and the Trustees of Eaton Vance Tax-Managed Buy-Write Income Fund and the Securities and Exchange Commission and is not intended to be and should not be used by anyone other than these specified parties.

/s/ Deloitte & Touche LLP

Boston, Massachusetts

February 21, 2025

AMENDMENT NO. 1 TO THE AMENDED AND RESTATED BY-LAWS

OF

           EATON VANCE TAX-MANAGED BUY-WRITE INCOME FUND

This Amendment No. 1 to the Amended and Restated By-Laws of Eaton Vance Tax-Managed Buy-Write Income Fund, effective as of August 13, 2020 (the “By-Laws”), is made as of October 10, 2024, in accordance with Article XV of the By-Laws. Capitalized terms used herein and not otherwise herein defined are used as defined in the By-Laws.

1.     The first paragraph under Article IV, Section 5 is hereby amended to read in its entirety as follows:

SECTION 5. Voting.  At each meeting of the shareholders, every shareholder of the Trust shall be entitled to one vote in person or by proxy for each share of the Trust held by such shareholder then having voting power in respect of the matter upon which the vote is to be taken, standing in his name on the books of the Trust at the time of the closing of the transfer books for the meeting, or, if the books be not closed for any meeting, on the record date fixed as provided in Section 4 of Article VI of these By-Laws for determining the shareholders entitled to vote at such meeting, or if the books be not closed and no record date be fixed, at the time of the meeting. The record holder of a fraction of a share shall be entitled in like manner to corresponding fraction of a vote.  Notwithstanding the foregoing, the Trustees may, in connection with the establishment of any class (or series) of shares or in proxy materials for any meeting of shareholders or in other solicitation materials or by vote or other action duly taken by them, establish conditions under which the several classes (or series) shall have separate voting rights or no voting rights.

2.     Article XIII is hereby deleted in its entirety and replaced with “Reserved.”

3.     Except as specifically amended herein, the By-Laws shall remain unchanged and in full force and effect.