<SEC-DOCUMENT>0001623632-17-000852-index.html : 20170410
<SEC-HEADER>0001623632-17-000852.hdr.sgml : 20170410
<ACCEPTANCE-DATETIME>20170410143302
ACCESSION NUMBER:		0001623632-17-000852
CONFORMED SUBMISSION TYPE:	497K
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20170410
DATE AS OF CHANGE:		20170410
EFFECTIVENESS DATE:		20170410

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FEDERATED MUNICIPAL SECURITIES INCOME TRUST
		CENTRAL INDEX KEY:			0000866700
		IRS NUMBER:				251695291
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0831

	FILING VALUES:
		FORM TYPE:		497K
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	033-36729
		FILM NUMBER:		17752953

	BUSINESS ADDRESS:	
		STREET 1:		4000 ERICSSON DRIVE
		CITY:			WARRENDALE
		STATE:			PA
		ZIP:			15086-7561
		BUSINESS PHONE:		8003417400

	MAIL ADDRESS:	
		STREET 1:		4000 ERICSSON DRIVE
		CITY:			WARRENDALE
		STATE:			PA
		ZIP:			15086-7561

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MUNICIPAL SECURITIES INCOME TRUST
		DATE OF NAME CHANGE:	19921023

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FEDERATED MUNICIPAL INCOME TRUST
		DATE OF NAME CHANGE:	19920703
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000866700
<SERIES-ID>S000009091
<SERIES-NAME>Federated New York Municipal Income Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000024700
<CLASS-CONTRACT-NAME>Class A Shares
<CLASS-CONTRACT-TICKER-SYMBOL>NYIFX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000024701
<CLASS-CONTRACT-NAME>Class B Shares
<CLASS-CONTRACT-TICKER-SYMBOL>NYIBX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>497K
<SEQUENCE>1
<FILENAME>merrillq453756sumprosupedg.htm
<TEXT>
Document 1 - file: merrillq453756sumprosupedg.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>fedlogok.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: fedlogok.jpg

</DOCUMENT>
</SEC-DOCUMENT>