<SEC-DOCUMENT>0001683863-25-006223-index.html : 20250728
<SEC-HEADER>0001683863-25-006223.hdr.sgml : 20250728
<ACCEPTANCE-DATETIME>20250728091605
ACCESSION NUMBER:		0001683863-25-006223
CONFORMED SUBMISSION TYPE:	N-CSRS
PUBLIC DOCUMENT COUNT:		10
CONFORMED PERIOD OF REPORT:	20250531
FILED AS OF DATE:		20250728
DATE AS OF CHANGE:		20250728
EFFECTIVENESS DATE:		20250728

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MFS HIGH INCOME MUNICIPAL TRUST
		CENTRAL INDEX KEY:			0000845606
		ORGANIZATION NAME:           	
		EIN:				043039022
		FISCAL YEAR END:			1130

	FILING VALUES:
		FORM TYPE:		N-CSRS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-05754
		FILM NUMBER:		251153153

	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 HIGH INCOME MUNICIPAL TRUST
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CSRS
<SEQUENCE>1
<FILENAME>f42558d1.htm
<DESCRIPTION>MFS HIGH INCOME MUNICIPAL TRUST (CXE)
<TEXT>
Document 1 - file: f42558d1.htm

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<DOCUMENT>
<TYPE>EX-99.302 CERT
<SEQUENCE>2
<FILENAME>f42558d2.htm
<DESCRIPTION>EX-99.302 CERT
<TEXT>
Document 2 - file: f42558d2.htm

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<DOCUMENT>
<TYPE>EX-99.906 CERT
<SEQUENCE>3
<FILENAME>f42558d3.htm
<DESCRIPTION>EX-99.906 CERT
<TEXT>
Document 3 - file: f42558d3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.30E-3
<SEQUENCE>4
<FILENAME>f42558d4.htm
<DESCRIPTION>EX-99.30E-3
<TEXT>
Document 4 - file: f42558d4.htm

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<SEQUENCE>5
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<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: img04cad58e1.gif

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<TEXT>
Document 6 - file: img74cb952a2.gif

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<TYPE>GRAPHIC
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<FILENAME>imgc263d7403.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: imgc263d7403.jpg

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<TYPE>GRAPHIC
<SEQUENCE>8
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<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: gb-notice_imagesgbnotice5xg.jpg

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<SEQUENCE>9
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<TEXT>
Document 9 - file: gg030e-3_imagesgg030e32x1.jpg

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<SEQUENCE>10
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<TEXT>
Document 10 - file: gg030e-3_imagesgg030e33x1.jpg

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