# EDGAR Filing Document

**Accession Number:** 0000745463
**File Stem:** 0000940394-23-000460
**Filing Date:** 2023-3
**Character Count:** 4198
**Document Hash:** c1547d1e890d80122200ef9fe889e882
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000940394-23-000460.hdr.sgml**: 20230315

**ACCESSION NUMBER**: 0000940394-23-000460

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230315

**DATE AS OF CHANGE**: 20230315

**EFFECTIVENESS DATE**: 20230315

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** EATON VANCE MUTUAL FUNDS TRUST
- **CENTRAL INDEX KEY:** 0000745463
- **IRS NUMBER:** 000000000

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-90946
- **FILM NUMBER:** 23733401

**BUSINESS ADDRESS:**
- **STREET 1:** TWO INTERNATIONAL PLACE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02110
- **BUSINESS PHONE:** 617-482-8260

**MAIL ADDRESS:**
- **STREET 1:** TWO INTERNATIONAL PLACE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02110

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** EATON VANCE GOVERNMENT OBLIGATIONS TRUST
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### Eaton Vance Taxable Municipal Bond Fund (Series ID: S000070573)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                      | Ticker Symbol | Class ID   |
| Eaton Vance Taxable Municipal Bond Fund Class A | EAMBX         | C000224164 |
| Eaton Vance Taxable Municipal Bond Fund Class I | EIMBX         | C000224166 |

---

## Series and Classes Contracts Data

### Eaton Vance Taxable Municipal Bond Fund (Series ID: S000070573)

| Class ID   | Class Name                                      | Ticker Symbol   |
|:---|:---|:---|
| C000224164 | Eaton Vance Taxable Municipal Bond Fund Class A | EAMBX           |
| C000224166 | Eaton Vance Taxable Municipal Bond Fund Class I | EIMBX           |

EATON VANCE TAXABLE MUNICIPAL BOND FUND

<br> Supplement to Summary Prospectus and Prospectus dated April 1, 2022 and as revised April 29, 2022

and Statement of Additional Information dated April 1, 2022<br>

The Board of Trustees of Eaton Vance Mutual Funds Trust, on behalf of Eaton Vance Taxable Municipal Bond Fund (the "Fund"), has approved the liquidation of the Fund, which is expected to take place on or about March 29, 2023 (the "Liquidation Date"). Effective as of the close of business on March 22, 2023, shares of the Fund will no longer be available for purchase or exchange. In connection with the liquidation of its portfolio, the Fund may not pursue its investment objective, comply with its investment limitations or engage in normal business activities, except for the purposes of winding up its business and affairs, paying its liabilities, and distributing its remaining assets to shareholders. In advance of the liquidation, a portion of the Fund's assets may be invested in cash and/or money market instruments.

IMPORTANT INFORMATION FOR FUND SHARES HELD THROUGH A NON-QUALIFIED ACCOUNT.

If you own Fund shares in a non-qualified account, you may (1) opt to exchange shares of a Fund for the same class of shares of another fund in the Eaton Vance family of funds prior to March 22, 2023, or (2) take no action and Fund shares will be redeemed at their net asset value on the Liquidation Date. A check for the proceeds will be mailed to the address of record. If you have questions or would like assistance in exchanging to shares of another Eaton Vance fund, please call Eaton Vance Shareholder Services at 1-800-336-3025.

IMPORTANT INFORMATION FOR FUND SHARES HELD THROUGH A QUALIFIED ACCOUNT MAINTAINED BY A FINANCIAL INTERMEDIARY.

If you own Fund shares in an account maintained by a financial intermediary, please contact that financial intermediary if you have questions about the liquidation of the Fund. If you are invested in a qualified account (such as an individual retirement account), you must work with the financial intermediary to direct your investment in order to avoid possible tax penalties.

*Notwithstanding the foregoing, the timing of the liquidation may be extended beyond the Liquidation Date if, in the opinion of the investment adviser, market conditions are unfavorable on or around the Liquidation Date. The Fund will notify shareholders of any such extension pursuant to a subsequent supplement.*

March 15, 2023 42129 3.15.23