<SEC-DOCUMENT>0001752724-22-022433-index.html : 20220209
<SEC-HEADER>0001752724-22-022433.hdr.sgml : 20220209
<ACCEPTANCE-DATETIME>20220209134628
ACCESSION NUMBER:		0001752724-22-022433
CONFORMED SUBMISSION TYPE:	N-CEN
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20211130
FILED AS OF DATE:		20220209
DATE AS OF CHANGE:		20220209
EFFECTIVENESS DATE:		20220209

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MFS HIGH YIELD MUNICIPAL TRUST
		CENTRAL INDEX KEY:			0000809844
		IRS NUMBER:				042950868
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1130

	FILING VALUES:
		FORM TYPE:		N-CEN
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-04992
		FILM NUMBER:		22605645

	BUSINESS ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
		BUSINESS PHONE:		617-954-5000

	MAIL ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COLONIAL MUNICIPAL INCOME TRUST
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CEN
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>INTERNAL CONTROL RPT
<SEQUENCE>2
<FILENAME>NCEN_811-04992_63437875_1121.htm
<TEXT>
Document 2 - file: NCEN_811-04992_63437875_1121.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>INST DEFINING RIGHTS
<SEQUENCE>3
<FILENAME>NCEN_811-04992_41409888_1121.htm
<TEXT>
Document 3 - file: NCEN_811-04992_41409888_1121.htm

</DOCUMENT>
</SEC-DOCUMENT>