<SEC-DOCUMENT>0000940394-21-001144.txt : 20210817
<SEC-HEADER>0000940394-21-001144.hdr.sgml : 20210817
<ACCEPTANCE-DATETIME>20210817101546
ACCESSION NUMBER:		0000940394-21-001144
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20210817
DATE AS OF CHANGE:		20210817

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EATON VANCE SENIOR INCOME TRUST
		CENTRAL INDEX KEY:			0001070732
		IRS NUMBER:				043435040

	FILING VALUES:
		FORM TYPE:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-227968
		FILM NUMBER:		211181356

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B3
<SEQUENCE>1
<FILENAME>evfprosupp.htm
<DESCRIPTION>EATON VANCE SENIOR INCOME TRUST THRESHOLD DTD 8-17-2021
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<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 0 6pt; text-align: right"><B>Filed pursuant to Rule 424(b)(3)<BR>
File No. 333-227968</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 0 15pt; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0 0 15pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>EATON VANCE
SENIOR INCOME TRUST<BR>
Supplement to </B></FONT><B><FONT STYLE="font-size: 9pt">Prospectus</FONT> <FONT STYLE="font-size: 10pt">dated October 27, 2020 and Prospectus
Supplement dated October 27, 2020</FONT></B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; text-align: justify; margin-right: 0; margin-left: 0">The following replaces any references,
contained either in the Prospectus or the Prospectus Supplement, with respect to the Fund&#8217;s: (i) last reported sale price; (ii)
net asset value (&#8220;NAV&#8221;) per Common Share; (iii) percentage premium to NAV per Common Share; (iv) number of Common Shares outstanding;
and (v) net assets.</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; text-align: justify; margin-right: 0; margin-left: 0.5in">On August 16, 2021, the last
reported sale price, NAV per Common Share and percentage premium to NAV per Common Share, were $6.94, $6.92 and 0.29%, respectively. As
of August 16, 2021, we had 17,536,316 Common Shares outstanding and net assets of approximately $121,375,608.</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; text-align: justify; margin-right: 0; margin-left: 0">The following replaces the last
sentence in the first paragraph under &#8220;Use of Proceeds&#8221; in the Prospectus Supplement:</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; text-align: justify; margin-right: 0; margin-left: 0.5in">Assuming the sale of all
of the Common Shares offered under this Prospectus Supplement and the accompanying Prospectus, at the last reported sale price of $6.94
per share for our Common Shares on the NYSE as of August 16, 2021, we estimate that the net proceeds of this offering will be approximately
$12,632,113 after deducting the estimated sales load and the estimated offering expenses payable by the Fund.</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; text-align: justify; margin-right: 0; margin-left: 0.5in">&#8194;</P>

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    <TD STYLE="width: 52%; padding-top: 4.5pt; padding-bottom: 4.5pt; font: 12pt Times New Roman, Times, Serif"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">August 17, 2021</FONT></TD>
    <TD STYLE="width: 48%; padding-top: 4.5pt; padding-bottom: 4.5pt; font: 12pt Times New Roman, Times, Serif; text-align: right">&nbsp;</TD></TR>
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<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 0 12pt">&nbsp;</P>


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