# EDGAR Filing Document

**Accession Number:** 0001258623
**File Stem:** 0000940394-23-000545
**Filing Date:** 2023-3
**Character Count:** 48401
**Document Hash:** 2b3cd4c3a3e45b8dad7585e4b4569992
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000940394-23-000545.hdr.sgml**: 20230331

**ACCESSION NUMBER**: 0000940394-23-000545

**CONFORMED SUBMISSION TYPE**: POS EX

**PUBLIC DOCUMENT COUNT**: 15

**FILED AS OF DATE**: 20230331

**DATE AS OF CHANGE**: 20230331

**EFFECTIVENESS DATE**: 20230331

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** EATON VANCE SENIOR FLOATING RATE TRUST
- **CENTRAL INDEX KEY:** 0001258623
- **IRS NUMBER:** 000000000
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** POS EX
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-266343
- **FILM NUMBER:** 23789302

**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 SENIOR FLOATING RATE FUND
- **DATE OF NAME CHANGE:** 20030806

?xml version="1.0" encoding="utf-8"?

As filed with the Securities and Exchange Commission on March 31, 2023

1933 Act File No. 333-266343

1940 Act File No. 811-21411

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| |
|:---|
| **SECURITIES AND EXCHANGE COMMISSION** |
| **WASHINGTON, D.C. 20549** |
| **FORM N-2** |

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| | |
|:---|:---|
| **REGISTRATION STATEMENT<br> UNDER<br> THE SECURITIES ACT of 1933** | ◻ |
| **PRE-EFFECTIVE AMENDMENT NO.** | ◻ |
| **POST-EFFECTIVE AMENDMENT NO. 1** | ⌧ |
| **and/or** |  |
| **REGISTRATION STATEMENT<br> UNDER<br> THE INVESTMENT COMPANY ACT OF 1940** | ⌧ |
| **AMENDMENT NO. 30** | ⌧ |

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| |
|:---|
| **EATON VANCE SENIOR FLOATING-RATE TRUST** |
| **(Exact Name of Registrant as Specified in Charter)** |
| **Two International Place, Boston, Massachusetts 02110** |
| **(Address of Principal Executive Offices)** |
| **(617) 482-8260** |
| **(Registrant's Telephone Number)** |
| **Deidre E. Walsh** |
| **Two International Place, Boston, Massachusetts 02110** |

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**Approximate Date of Proposed Public Offering:** As soon as practicable after the effective date of this Registration Statement.

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, check the following box. ☐

If any securities being registered on this Form will be offered on a delayed or continuous basis in reliance on Rule 415 under the Securities Act of 1933 ("Securities Act"), other than securities offered in connection with a dividend reinvestment plan, check the following box. ☑

If this Form is a registration statement pursuant to General Instruction A.2 or a post-effective amendment thereto, check the following box. ☑

If this Form is a registration statement pursuant to General Instruction B or a post-effective amendment thereto that will become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box. ☐

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction B to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. ☐

**It is proposed that this filing will become effective (check appropriate box):**

☐ when declared effective pursuant to section 8(c)

**If appropriate, check the following box:**

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| | |
|:---|:---|
| ☐ | This post-effective amendment designates a new effective date for a previously filed registration statement. |
| ☐ | This Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act and the Securities Act registration statement number of the earlier effective registration statement for the same offering is ________. |
| ☐ | This Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, and the Securities Act registration statement number of the earlier effective registration statement for the same offering is________. |
| ☑ | This Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, and the Securities Act registration statement number of the earlier effective registration statement for the same offering is 333-266343. |

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**Check each box that appropriately characterizes the Registrant:**

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| | |
|:---|:---|
| ☑ | Registered Closed-End Fund (closed-end company that is registered under the Investment Company Act of 1940 (the "Investment Company Act")). |
| ☐ | Business Development Company (closed-end company that intends or has elected to be regulated as a business development company under the Investment Company Act). |
| ☐ | Interval Fund (Registered Closed-End Fund or a Business Development Company that makes periodic repurchase offers under Rule 23c-3 under the Investment Company Act). |
| ☑ | A.2 Qualified (qualified to register securities pursuant to General Instruction A.2 of this Form). |
| ☐ | Well-Known Seasoned Issuer (as defined by Rule 405 under the Securities Act). |
| ☐ | Emerging Growth Company (as defined by Rule 12b-2 under the Securities Exchange Act of 1934 ("Exchange Act"). |
| ☐ | If an Emerging Growth Company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of Securities Act. |
| ☐ | New Registrant (registered or regulated under the Investment Company Act for less than 12 calendar months preceding this filing). |

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**Explanatory Note**

This Post-Effective Amendment No. 1 to the Registration Statement on Form N-2 (File No. 333-266343) of Eaton Vance Senior Floating-Rate Trust (the "Registration Statement") is being filed pursuant to Rule 462(d) under the Securities Act of 1933, as amended (the "Securities Act"), solely for the purpose of filing exhibits to the Registration Statement. Accordingly, this Post-Effective Amendment No. 1 consists only of a facing page, this explanatory note and Part C of the Registration Statement on Form N-2 setting forth the exhibits to the Registration Statement. This Post-Effective Amendment No. 1 does not modify any other part of the Registration Statement. Pursuant to Rule 462(d) under the Securities Act, this Post-Effective Amendment No. 1 shall become effective immediately upon filing with the Securities and Exchange Commission. The contents of the Registration Statement are hereby incorporated by reference.

**PART C**

**OTHER INFORMATION**

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| | |
|:---|:---|
| **ITEM 25.** | **FINANCIAL STATEMENTS AND EXHIBITS** |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(1)** **FINANCIAL STATEMENTS:** 

Included in Part A:

Financial Highlights.

Included in Part B:

Registrant's Certified Shareholder Reports on Form N-CSR filed December 22, 2022 ([Accession No. 0001193125-22-310991](https://www.sec.gov/Archives/edgar/data/1258623/000119312522310991/d601375dncsr.htm)) and incorporated herein by reference.

____________________________

**(2)** **EXHIBITS:** 

(a) (1) [Agreement and Declaration of Trust dated August 5, 2003 is incorporated herein by reference to the Registrant's initial Registration Statement on Form N-2 (File Nos. 333-108010 and 811-21411) as to the Registrant's common shares of beneficial interest ("Common Shares") filed with the Securities and Exchange Commission on August 15, 2003 (Accession No. 0000898432-03-000791) ("Initial Common Shares Registration Statement").](http://www.sec.gov/Archives/edgar/data/1258623/000089843203000791/ev_exhibit-a.txt)

(2) [Amendment dated October 15, 2003 to Agreement and Declaration of Trust is incorporated herein by reference to the Registrant's Pre-Effective Amendment No. 1 to the Initial Common Shares Registration Statement filed with the Commission on October 24, 2003 (Accession No. 0000950135-03-005300) ("Pre-Effective Amendment No. 1 to the Initial Common Shares Registration Statement").](http://www.sec.gov/Archives/edgar/data/1258623/000095013503005300/b48157a1exv99wxayx2y.txt)

(3) [Amendment dated August 11, 2008 to Agreement and Declaration of Trust is incorporated herein by reference to the Registrant's Initial Registration Statement on Form N-2 (File Nos. 333-172870 and 811-21411) as to Registrant's shelf offering filed with the Commission on March 16, 2011 (Accession No. 0000898432-11-000425) ("Initial Shelf Registration Statement").](http://www.sec.gov/Archives/edgar/data/1258623/000089843211000425/exhibita3.htm)

(b) [Amended and Restated By-Laws dated August 13, 2020 is incorporated herein by reference to the Registrant's Form 8-K filed with the Securities and Exchange Commission on August 13, 2020 (Accession No. 0000940394-20-001205).](https://www.sec.gov/Archives/edgar/data/1258623/000094039420001205/efr8k.htm)

(c) Not applicable.

(d) (1) [Form of Specimen Certificate for Common Shares of Beneficial Interest incorporated herein by reference to the Registrant's Initial Common Shares Registration Statement.](http://www.sec.gov/Archives/edgar/data/1258623/000095013503005300/b48157a1exv99wxdy.txt)

(2) [Form of Specimen Certificate of Series A Auction Preferred Shares is incorporated herein by reference to the Registrant's initial Registration Statement on Form N-2 (File Nos. 333-111041and 811-21411) as to Registrant's Auction Preferred Shares ("APS") filed with the Commission on September 25, 2002 (Accession No. 0000898432-03-001228) ("Initial APS Registration Statement").](http://www.sec.gov/Archives/edgar/data/1258623/000089843203001228/certificate-seriesa.txt)

(3) [Form of Specimen Certificate of Series B Auction Preferred Shares is incorporated herein by reference to Registrant's Initial APS Registration Statement.](http://www.sec.gov/Archives/edgar/data/1258623/000089843203001228/certificate-seriesb.txt)

(4) [Form of Specimen Certificate of Series C Auction Preferred Shares is incorporated herein by reference to Registrant's Initial APS Registration Statement.](http://www.sec.gov/Archives/edgar/data/1258623/000089843203001228/certificate-seriesc.txt)

(5) [Form of Specimen Certificate of Series D Auction Preferred Shares is incorporated herein by reference to Registrant's Initial APS Registration Statement.](http://www.sec.gov/Archives/edgar/data/1258623/000089843203001228/certificate-seriesd.txt)

(6) [Form of Specimen Certificate of Series E Auction Preferred Shares is incorporated herein by reference to Registrant's Initial APS Registration Statement.](http://www.sec.gov/Archives/edgar/data/1258623/000089843203001228/certificate-seriese.txt)

(e) [Dividend Reinvestment Plan filed as Exhibit (17)(d) to the Registrant's Initial N-14 and incorporated herein by reference.](http://www.sec.gov/Archives/edgar/data/1258623/000095013503005300/b48157a1exv99wxey.txt)

(f) Not applicable.

(g) (1) [Investment Advisory Agreement dated May 13, 2021 between the Registrant and Eaton Vance Management filed as Exhibit (g)(1) is incorporated herein by reference to the Registrant's Post-Effective Amendment No. 5 filed under Form POS EX filed with the Securities and Exchange Commission on November 9, 2021 (Accession No. 0000940394-21-001444).](https://www.sec.gov/Archives/edgar/data/1258623/000094039421001444/exhibitg1_ex-99zg1.htm)

(h) (1) [Form of Underwriting Agreement is incorporated herein by reference to the Registrant's Pre-Effective Amendment No. 1 to the Initial Common Shares Registration Statement.](http://www.sec.gov/Archives/edgar/data/1258623/000095013503005300/b48157a1exv99wxhyx1y.txt)

(2) [Form of Master Agreement Among Underwriters is incorporated herein by reference to the Registrant's Pre-Effective Amendment No. 1 to the Initial Common Shares Registration Statement.](http://www.sec.gov/Archives/edgar/data/1258623/000095013503005300/b48157a1exv99wxhyx2y.txt)

(3) [Form of Master Selected Dealers Agreement is incorporated herein by reference to the Registrant's Pre-Effective Amendment No. 1 to the Initial Common Shares Registration Statement.](http://www.sec.gov/Archives/edgar/data/1258623/000095013503005300/b48157a1exv99wxhyx3y.txt)

(4) [Form of Underwriting Agreement as to Registrant's Auction Preferred Shares incorporated herein by reference to Registrant's APS Pre-Effective Amendment No. 1.](http://www.sec.gov/Archives/edgar/data/1258623/000095013504000163/b49089evexv99wxhyx4y.txt)

(5) [Form of Auction Agent Agreement as to Registrant's Auction Preferred Shares is incorporated herein by reference to APS Pre-Effective Amendment No. 1.](http://www.sec.gov/Archives/edgar/data/1258623/000095013504000163/b49089evexv99wxkyx6y.txt)

(6) [Form of Broker-Dealer Agreement as to Registrant's Auction Preferred Shares is incorporated herein by reference to APS Pre-Effective Amendment No. 1.](http://www.sec.gov/Archives/edgar/data/1258623/000095013504000163/b49089evexv99wxkyx7y.txt)

(7) [Form of Distribution Agreement t with respect to the Rule 415 shelf offering filed as Exhibit (h)(4) is incorporated herein by reference to the Registrant's Shelf Registration Statement filed on Form N-2 with the Securities and Exchange Commission on March 1, 2023 (Accession No. 0000940394-23-000428).](https://www.sec.gov/Archives/edgar/data/1258623/000094039423000428/efr4166701-ex99zh7.htm)

(8) [Form of Sub-Placement Agent Agreement as Exhibit (h)(5) is incorporated herein by reference to the Registrant's Shelf Registration Statement filed on Form N-2 with the Securities and Exchange Commission on March 1, 2023 (Accession No. 0000940394-23-000428).](https://www.sec.gov/Archives/edgar/data/1258623/000094039423000428/efr4166701-ex99zh8.htm)

(i) The Securities and Exchange Commission has granted the Registrant an exemptive order that permits the Registrant to enter into deferred compensation arrangements with its independent Trustees. See in the matter of Capital Exchange Fund, Inc., Release No. IC- 20671 (November 1, 1994).

(j) (1) [Amended and Restated Master Custodian Agreement between Eaton Vance Funds and State Street Bank & Trust Company dated September 1, 2013 filed as Exhibit (g)(1) is incorporated herein by reference to Post-Effective Amendment No. 211 of Eaton Vance Mutual Funds Trust (File Nos. 002-90946, 811-04015) filed September 24, 2013 (Accession No. 0000940394-13-001073).](http://www.sec.gov/Archives/edgar/data/745463/000094039413001073/exhibitg1_ex99zg1.htm)

(2) [Amendment dated August 13, 2020 and effective May 29, 2020 to Amended and Restated Master Custodian Agreement between Eaton Vance Funds and State Street Bank & Trust Company dated September 1, 2013 filed as Exhibit (g)(1)(b) is incorporated herein by reference to Post-Effective Amendment No. 79 filed September 24, 2020 (Accession No. 0000940394-20-001312).](https://www.sec.gov/Archives/edgar/data/779991/000094039420001312/exhibitg1b_ex-99zg1b.htm)

(3) [Amended and Restated Services Agreement with State Street Bank & Trust Company dated September 1, 2010 filed as exhibit (g)(2) is incorporated herein by reference to Post-Effective Amendment No. 108 of Eaton Vance Special Investment Trust (File Nos. 02-27962, 811-1545) filed September 27, 2010 (Accession No. 0000940394-10-001000).](http://www.sec.gov/Archives/edgar/data/31266/000094039410001000/exhibitg2.htm)

(4) [Amendment Number 1 dated May 16, 2012 to Amended and Restated Services Agreement with State Street Bank & Trust Company dated September 1, 2010 filed as Exhibit (g)(3) is incorporated herein by reference to Post-Effective Amendment No. 39 of Eaton Vance Municipals Trust II (File Nos. 033-71320, 811-08134) filed May 29, 2012 (Accession No. 0000940394-12-000641).](http://www.sec.gov/Archives/edgar/data/914529/000094039412000641/exhibitg3_ex99zg3.htm)

(5) [Amendment dated September 1, 2013 to Amended and Restated Services Agreement with State Street Bank & Trust Company dated September 1, 2010 filed as Exhibit (g)(4) is incorporated herein by reference to Post-Effective Amendment No. 211 of Eaton Vance Mutual Funds Trust (File Nos. 002-90946, 811-04015) filed September 24, 2013 (Accession No. 0000940394-13-001073).](http://www.sec.gov/Archives/edgar/data/745463/000094039413001073/exhibitg4_ex99zg4.htm)

(6) [Amendment dated July 18, 2018 and effective June 29, 2018 to Amended and Restated Services Agreement with State Street Bank & Trust Company dated September 1, 2010 filed as Exhibit (g)(5) to Post-Effective Amendment No. 212 filed July 31, 2018 (Accession No. 0000940394-18-001408) and incorporated herein by reference.](http://www.sec.gov/Archives/edgar/data/102816/000094039418001408/exhibitg5_ex-99zg5.htm)

(7) [Amendment dated August 13, 2020 and effective May 29, 2020 to Amended and Restated Services Agreement with State Street Bank & Trust Company dated September 1, 2010 filed as Exhibit (h)(1)(e) is incorporated herein by reference to Post-Effective Amendment No. 79 of Eaton Vance Investment Trust (File Nos. 033-01121, 811-04443) filed September 24, 2020 (Accession No. 0000940394-20-001312).](https://www.sec.gov/Archives/edgar/data/779991/000094039420001312/exhibith1e_ex-99zh1e.htm)

(k) (1) [Transfer Agency and Services Agreement dated February 5, 2007 between American Stock Transfer & Trust Company and each Registered Investment Company listed on Exhibit 1 filed as Exhibit (k)(1) is incorporated herein by reference to Pre-Effective Amendment No. 3 to the initial Registration Statement on Form N-2 of Eaton Vance Tax-Managed Global Diversified Equity Income Fund (File Nos. 333-138318, 811-21973) filed February 21, 2007 (Accession No. 0000950135- 07- 000974).](https://www.sec.gov/Archives/edgar/data/1379438/000095013507000974/b63412n4exv99wxkyx1y.htm)

(2) [Amendment dated April 21, 2008 to Transfer Agency and Services Agreement dated February 5, 2007 between American Stock Transfer & Trust Company and each Registered Investment Company listed on Exhibit 1 filed as Exhibit (k)(1) is incorporated herein by reference to Pre-Effective Amendment No. 1 to the initial Registration Statement on Form N-2 of Eaton Vance National Municipal Opportunities Trust (File Nos. 333-156948, 811-22269) filed April 21, 2009 (Accession No. 0000950135- 09- 083055).](https://www.sec.gov/Archives/edgar/data/1454741/000119312509083055/dex99k1.htm)

(3) [Amendment dated June 13, 2012 to Transfer Agency and Services Agreement dated February 5, 2007 between American Stock Transfer & Trust Company and each Registered Investment Company listed on Exhibit 1 filed as Exhibit (k)(1) is incorporated herein by reference to Pre-Effective Amendment No. 2 to the initial Registration Statement on Form N-2 of Eaton Vance High Income 2021 Target Term Trust (File Nos. 333-209436, 811-23136) filed April 25, 2016 (Accession No. 0000950135- 16- 552383).](https://www.sec.gov/Archives/edgar/data/1665817/000119312516552383/d166897dex99k1.htm)

(4) [Administrative Services Agreement dated March 1, 2021 between the Registrant and Eaton Vance Management filed as Exhibit (k)(1) is incorporated herein by reference to the Registrant's Post-Effective Amendment No. 5 filed under Form POS EX filed with the Securities and Exchange Commission on November 9, 2021 (Accession No. 0000940394-21-001444).](https://www.sec.gov/Archives/edgar/data/1258623/000094039421001444/exhibitk4_ex-99zk4.htm)

(l) [Opinion of Internal Counsel filed herewith.](efr4166771-ex99zl.htm)

(m) Not applicable.

(n) Not applicable.

(o) Not applicable.

(p) [Letter Agreement with Eaton Vance Management is incorporated herein by reference to Pre-Effective Amendment No. 2 to the Initial Common Shares Registration Statement filed with the Commission on November 20, 2003 (Accession No. 0000950135-03-005762).](http://www.sec.gov/Archives/edgar/data/1258623/000095013503005762/b48380evexv99wxpy.txt)

(q) Not applicable.

(r) (1) [Code of Ethics adopted by the Eaton Vance Funds effective June 1, 2021 filed as Exhibit (p)(1)(a) to Post-Effective Amendment No. 240 of Eaton Vance Growth Trust (File Nos. 002-22019, 811-01241) filed October 29, 2021 (Accession No. 0000940394-21-001414) and incorporated herein by reference.](https://www.sec.gov/Archives/edgar/data/102816/000094039421001414/exhibitp1a_ex99zp1a.htm)

(2) [Code of Ethics and Personal Trading Guidelines adopted by Morgan Stanley Investment Management Public Side effective January 1, 2022 filed as Exhibit (p)(1)(b) to Post-Effective Amendment No. 242 of Eaton Vance Growth Trust (File Nos. 002-22019, 811-01241) filed December 23, 2021 (Accession No. 0000940394-21-001566) and incorporated herein by reference.](https://www.sec.gov/Archives/edgar/data/102816/000094039421001566/exhibitp1b_ex99zp1b.htm)

(s) [Calculation of Filing Fee Tables filed as Exhibit (s) is incorporated herein by reference to the Registrant's Shelf Registration Statement filed on Form N-2 with the Securities and Exchange Commission on March 1, 2023 (Accession No. 0000940394-23-000428).](https://www.sec.gov/Archives/edgar/data/1258623/000094039423000428/efr4166701-ex99zs.htm)

(t) (1) [Secretary's Certificate dated January 4, 2023 filed as Exhibit (t)(1) is incorporated herein by reference to the Registration Statement on Form N-2 filed with the Commission on March 1, 2023 (Accession No. 0000940394-23-000428).](https://www.sec.gov/Archives/edgar/data/1258623/000094039423000428/efr4166701-ex99zt1.htm)

(2) [Power of Attorney dated February 1, 2023 filed as Exhibit (t)(1) is incorporated herein by reference to the Registration Statement on Form N-2 filed with the Commission on March 1, 2023 (Accession No. 0000940394-23-000428).](https://www.sec.gov/Archives/edgar/data/1258623/000094039423000428/efr4166701-ex99zt2.htm)

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|:---|:---|
| **ITEM 26.** | **MARKETING ARRANGEMENTS** |

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See Form of Distribution Agreement with respect to the Rule 415 shelf offering.

See Form of Sub-Placement Agent Agreement.

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|:---|:---|
| **ITEM 27.** | **OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION** |

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The approximate expenses in connection with the offering are as follows:

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| | |
|:---|:---|
| Registration and Filing Fees | $4046 |
| FINRA Fees | $6531 |
| New York Stock Exchange Fees | $14297 |
| Costs of Printing and Engraving | $0 |
| Accounting Fees and Expenses | $2050 |
| Legal Fees and Expenses | $7000 |
| Total | $33924 |
| \* Eaton Vance Management, the Fund's Adviser, will pay expenses of the offering (other than the applicable commissions). | \* Eaton Vance Management, the Fund's Adviser, will pay expenses of the offering (other than the applicable commissions). |

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|:---|:---|
| **ITEM 28.** | **PERSONS CONTROLLED BY OR UNDER COMMON CONTROL** |

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None.

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| | |
|:---|:---|
| **ITEM 29.** | **NUMBER OF HOLDERS OF SECURITIES** |

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Set forth below is the number of record holders as of January 31, 2023, of each class of securities of the Registrant:

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| | |
|:---|:---|
| **Title of Class** | **Number of Record Holders** |
| Common Shares of Beneficial interest, par value $0.01 per share | 15530 |
| Auction Preferred Shares - Series A, par value $0.01 per share | 10 |
| Auction Preferred Shares - Series B, par value $0.01 per share | 5 |
| Auction Preferred Shares - Series C, par value $0.01 per share | 13 |
| Auction Preferred Shares - Series D, par value $0.01 per share | 8 |

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|:---|:---|
| **ITEM 30.** | **INDEMNIFICATION** |

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The Registrant's Amended and Restated By-Laws and the Form of Distribution Agreement contain provisions limiting the liability, and providing for indemnification, of the Trustees and officers under certain circumstances.

The Registrant's Trustees and officers are insured under a standard investment company errors and omissions insurance policy covering loss incurred by reason of negligent errors and omissions committed in their official capacities as such. Insofar as indemnification for liabilities arising under the Securities Act of 1933, as amended (the "Securities Act"), may be permitted to directors, officers and controlling persons of the Registrant pursuant to the provisions described in this Item 30, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission (the "Commission") such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

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| | |
|:---|:---|
| **ITEM 31.** | **BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER** |

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Reference is made to: (i) the information set forth under the caption "Investment Advisory and Other Services" in the Statement of Additional Information; (ii) the Morgan Stanley 10-K filed under the Securities Exchange Act of 1934, as amended (the "1934 Act") (File No. 001-11758); the most recent Eaton Vance Corp. Form 10-K filed under the 1934 Act (File No. 001-8100); and (iii) the Form ADV of Eaton Vance Management (File No. 801-15930) filed with the Commission under the Investment Advisers Act of 1940, as amended, all of which are incorporated herein by reference.

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| | |
|:---|:---|
| **ITEM 32.** | **LOCATION OF ACCOUNTS AND RECORDS** |

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All applicable accounts, books and documents required to be maintained by the Registrant by Section 31(a) of the Investment Company Act and the Rules promulgated thereunder are in the possession and custody of the Registrant's custodian, State Street Bank and Trust Company, State Street Financial Center, One Lincoln Street, Boston, MA 02111, and its transfer agent, American Stock Transfer & Trust Company, LLC, 6201 15<sup>th</sup> Avenue, Brooklyn, NY 11219, with the exception of certain corporate documents and portfolio trading documents which are in the possession and custody of Eaton Vance Management, Two International Place, Boston, MA 02110. Registrant is informed that all applicable accounts, books and documents required to be maintained by registered investment advisers are in the custody and possession of Eaton Vance Management.

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| | |
|:---|:---|
| **ITEM 33.** | **MANAGEMENT SERVICES** |

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Not applicable.

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| | |
|:---|:---|
| **ITEM 34.** | **UNDERTAKINGS** |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Not applicable.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Not applicable.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The Common Shares being registered will be offered on a delayed or continuous basis in reliance on Rule 415 under the Securities Act. Accordingly, the Fund undertakes:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; To file, during any period in which offers or sales are being made, a post-effective amendment to the registration statement:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; To include any prospectus required by Section 10(a)(3) of the Securities Act;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; To reflect in the prospectus any facts or events after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than 20% change in the maximum aggregate offering price set forth in the "Calculation of Registration Fee" table in the effective registration statement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement.

*Provided, however*, that paragraphs a(1), a(2), and a(3) of this section do not apply if the registration statement is filed pursuant to General Instruction A.2 of this Form and the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Commission by the Registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that are incorporated by reference into the registration statement, or is contained in a form of prospectus filed pursuant to Rule 424(b) that is part of the registration statement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of those securities at that time shall be deemed to be the initial bona fide offering thereof;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) &nbsp;&nbsp;&nbsp;&nbsp; That, for the purpose of determining liability under the Securities Act to any purchaser:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) if the Registrant is relying on Rule 430B [17 CFR 230.430B]:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(A) Each prospectus filed by the Registrant pursuant to Rule 424(b)(3) shall be deemed to be part of the registration statement as of the date the filed prospectus was deemed part of and included in the registration statement; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(B) Each prospectus required to be filed pursuant to Rule 424(b)(2), (b)(5), or (b)(7) as part of a registration statement in reliance on Rule 430B relating to an offering made pursuant to Rule 415(a)(1)(i), (x), or (xi) for the purpose of providing the information required by Section 10(a) of the Securities Act shall be deemed to be part of and included in the registration statement as of the earlier of the date such form of prospectus is first used after effectiveness or the date of the first contract of sale of securities in the offering described in the prospectus. As provided in Rule 430B, for liability purposes of the issuer and any person that is at that date an underwriter, such date shall be deemed to be a new effective date of the registration statement relating to the securities in the registration statement to which that prospectus relates, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. Provided, however, that no statement made in a registration statement or prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated by reference into the registration statement or

prospectus that is part of the registration statement will, as to a purchaser with a time of contract of sale prior to such effective date, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement or made in any such document immediately prior to such effective date; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) if the Registrant is subject to Rule 430C [17 CFR 230.430C]: each prospectus filed pursuant to Rule 424(b) under the Securities Act as part of a registration statement relating to an offering, other than registration statements relying on Rule 430B or other than prospectuses filed in reliance on Rule 430A, shall be deemed to be part of and included in the registration statement as of the date it is first used after effectiveness. Provided, however, that no statement made in a registration statement or prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated by reference into the registration statement or prospectus that is part of the registration statement will, as to a purchaser with a time of contract of sale prior to such first use, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement or made in any such document immediately prior to such date of first use.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; that for the purpose of determining liability of the Registrant under the Securities Act to any purchaser in the initial distribution of securities: The undersigned Registrant undertakes that in a primary offering of securities of the undersigned Registrant pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned Registrant will be a seller to the purchaser and will be considered to offer or sell such securities to the purchaser:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; any preliminary prospectus or prospectus of the undersigned Registrant relating to the offering required to be filed pursuant to Rule 424 under the Securities Act;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; free writing prospectus relating to the offering prepared by or on behalf of the undersigned Registrant or used or referred to by the undersigned Registrants;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the portion of any other free writing prospectus or advertisement pursuant to Rule 482 under the Securities Act relating to the offering containing material information about the undersigned Registrant or its securities provided by or on behalf of the undersigned Registrant; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; any other communication that is an offer in the offering made by the undersigned Registrant to the purchaser.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The Registrant undertakes that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for the purpose of determining any liability under the Securities Act, the information omitted from the form of prospectus filed as part of this Registration Statement in reliance upon Rule 430A and contained in the form of prospectus filed by the Registrant under the Securities Act shall be deemed to be part of the Registration Statement as of the time it was declared effective; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for the purpose of determining any liability under the Securities Act, each post- effective amendment that contains a form of prospectus shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The undersigned Registrant hereby undertakes that, for purposes of determining any liability under the Securities Act of 1933, each filing of the Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 that is incorporated by reference into the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to trustees, officers and controlling persons of the Fund pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a trustee, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The Registrant undertakes to send by first class mail or other means designed to ensure equally prompt delivery, within two business days of receipt of an oral or written request, any prospectus or Statement of Additional Information.

**NOTICE**

A copy of the Agreement and Declaration of Trust of Eaton Vance Senior Floating-Rate Trust is on file with the Secretary of State of The Commonwealth of Massachusetts and notice is hereby given that this instrument is executed on behalf of the Registrant by an officer of the Registrant as an officer and not individually and that the obligations of or arising out of this instrument are not binding upon any of the Trustees, officers or shareholders individually, but are binding only upon the assets and property of the Registrant.

**SIGNATURES**

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized in the City of Boston and the Commonwealth of Massachusetts, on the 31st day of March 2023.

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| | |
|:---|:---|
| **Eaton Vance Senior Floating-Rate Trust** | **Eaton Vance Senior Floating-Rate Trust** |
| By: | Eric A. Stein\* |
|  | Eric A. Stein, *President* |

---

Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

---

| | |
|:---|:---|
| **Signature** | **Title** |
| Eric A. Stein\* | President (Chief Executive Officer) |
| Eric A. Stein |  |
| James F. Kirchner\* | Treasurer (Principal Financial and Accounting Officer) |
| James F. Kirchner |  |

---

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;**Signature** | &nbsp;&nbsp;**Title** | &nbsp;&nbsp;**Signature** | &nbsp;&nbsp;**Title** |
| &nbsp;&nbsp;Alan C. Bowser\* | &nbsp;&nbsp;Trustee | &nbsp;&nbsp;Keith Quinton\* | &nbsp;&nbsp;Trustee |
| &nbsp;&nbsp;Alan C. Bowser |  | &nbsp;&nbsp;Keith Quinton |  |
| &nbsp;&nbsp;Thomas E. Faust Jr.\* | &nbsp;&nbsp;Trustee | &nbsp;&nbsp;Marcus L. Smith\* | &nbsp;&nbsp;Trustee |
| &nbsp;&nbsp;Thomas E. Faust Jr. |  | &nbsp;&nbsp;Marcus L. Smith |  |
| &nbsp;&nbsp;Mark R. Fetting\* | &nbsp;&nbsp;Trustee | &nbsp;&nbsp;Susan J. Sutherland\* | &nbsp;&nbsp;Trustee |
| &nbsp;&nbsp;Mark R. Fetting |  | &nbsp;&nbsp;Susan J. Sutherland |  |
| &nbsp;&nbsp;Cynthia E. Frost\* | &nbsp;&nbsp;Trustee | &nbsp;&nbsp;Scott E. Wennerholm\* | &nbsp;&nbsp;Trustee |
| &nbsp;&nbsp;Cynthia E. Frost |  | &nbsp;&nbsp;Scott E. Wennerholm |  |
| &nbsp;&nbsp;George J. Gorman\* | &nbsp;&nbsp;Trustee | &nbsp;&nbsp;Nancy A. Wiser\* | &nbsp;&nbsp;Trustee |
| &nbsp;&nbsp;George J. Gorman |  | &nbsp;&nbsp;Nancy A. Wiser |  |
| &nbsp;&nbsp;Valerie A. Mosley\* | &nbsp;&nbsp;Trustee |  |  |
| &nbsp;&nbsp;Valerie A. Mosley |  |  |  |

---

---

| | |
|:---|:---|
| &nbsp;&nbsp;\*By: | &nbsp;&nbsp;/s/ Deidre E. Walsh |
|  | &nbsp;&nbsp;Deidre E. Walsh *(As attorney-in-fact)* |

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**INDEX TO EXHIBITS** 

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| | |
|:---|:---|
| **<u>Exhibit No.</u>** | **<u>Description</u>** |
| (l) | [Opinion of Internal Counsel](efr4166771-ex99zl.htm) |

---

## Ex-99.L

![](efr4166771-ex99zl1x1x1.jpg)

Eaton Vance Management

Two International Place

Boston, MA 02110

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(617) 482-8260

www.eatonvance.com

**EXHIBIT (l)**

March 31, 2023

Eaton Vance Senior Floating-Rate Trust<br> Two International Place<br> Boston, MA 02110

Ladies and Gentlemen:

I have acted as counsel to Eaton Vance Senior Floating-Rate Trust (the "Trust"). I am admitted to practice law in the Commonwealth of Massachusetts. The Trust is a Massachusetts business trust pursuant to the Declaration of Trust dated August 5, 2003, as amended (the "Declaration of Trust").

I am of the opinion that all legal requirements have been complied with in the creation of the Trust, and that said Declaration of Trust is legal and valid.

This opinion is furnished in connection with the filing with the Securities and Exchange Commission ("SEC") of Post-Effective Amendment No. 1 to the Trust's Registration Statement on Form N-2 (File Nos. 333-266343 and 811-21411) (the "Registration Statement"), for the registration of up to 3,085,835 common shares of beneficial interest of the Trust, $0.01 par value (the "Shares") under the Securities Act of 1933, as amended (the "1933 Act"). This amount represents the unsold Shares previously registered on Form N-2 (Reg. No. 333-229695) and that are being carried forward as permitted by Rule 415 (a)(6) and Rule 457 (p) under the 1933 Act.

The Trustees of the Trust have the powers set forth in the Declaration of Trust, subject to the terms, provisions and conditions therein provided. As provided in the Declaration of Trust, the Trustees may authorize one or more series or classes of shares and the number of shares of each series or class authorized is unlimited. Under the Declaration of Trust, the Trustees may from time to time issue and sell or cause to be issued and sold shares of the Trust for cash or for property. All such shares, when so issued, shall be fully paid and nonassessable by the Trust.

Based upon the foregoing, and with respect to Massachusetts law (other than the Massachusetts Uniform Securities Act), only to the extent that Massachusetts law may be applicable and without reference to the laws of the other several states or of the United States of America, I am of the opinion that under existing law:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. The
 Trust is a trust with transferable shares of beneficial interest organized in compliance
 with the laws of the Commonwealth of Massachusetts, and the Declaration of Trust is legal
 and valid under the laws of the Commonwealth of Massachusetts.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. Shares
 of beneficial interest of the Trust registered by Form N-2 may be legally and validly issued
 in accordance with the Declaration of Trust upon receipt of payment in compliance with the
 Declaration of Trust and, when so issued and sold, will be fully paid and nonassessable by
 the Trust.

Securities and Exchange Commission<br> March 31, 2023<br> Page 2

Under Massachusetts law, if certain conditions prevail, shareholders of a Massachusetts business trust (such as the Trust) could be deemed to have personal liability for the obligations of the Trust. The Trust's Declaration of Trust contains an express disclaimer of liability on the part of shareholders and the Trust's By-laws provide that the Trust shall, upon request by the shareholder, assume the defense of any claim made against any shareholder for any act or obligation of the Trust and satisfy any judgement thereon. The Declaration of Trust also contains provisions limiting the liability of a series or class to that series or class. Moreover, the Trust's By-laws also provide for indemnification of any shareholder held personally liable solely by reason of being or having been a shareholder for all loss or expense arising from such liability. Thus, the risk of a shareholder incurring financial loss on account of shareholder liability is limited to circumstances in which the Trust itself would be unable to meet its obligations.

I consent to the filing of this opinion with the Securities and Exchange Commission as part of the Trust's registration statement on Form N-2.

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| |
|:---|
| Very truly yours, |
| /s/ Jeanmarie Valle Lee |
| Jeanmarie Valle Lee, Esq. |
| Vice President |

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