<SEC-DOCUMENT>0001193125-21-221694-index.html : 20210722
<SEC-HEADER>0001193125-21-221694.hdr.sgml : 20210722
<ACCEPTANCE-DATETIME>20210722134103
ACCESSION NUMBER:		0001193125-21-221694
CONFORMED SUBMISSION TYPE:	N-CSRS
PUBLIC DOCUMENT COUNT:		23
CONFORMED PERIOD OF REPORT:	20210531
FILED AS OF DATE:		20210722
DATE AS OF CHANGE:		20210722
EFFECTIVENESS DATE:		20210722

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MFS INTERMEDIATE HIGH INCOME FUND
		CENTRAL INDEX KEY:			0000833021
		IRS NUMBER:				046593681
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1130

	FILING VALUES:
		FORM TYPE:		N-CSRS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-05567
		FILM NUMBER:		211107037

	BUSINESS ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
		BUSINESS PHONE:		6179545000

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

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COLONIAL INTERMEDIATE HIGH INCOME FUND
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CSRS
<SEQUENCE>1
<FILENAME>d184546dncsrs.htm
<DESCRIPTION>MFS INTERMEDIATE HIGH INCOME FUND N-CSRS
<TEXT>
Document 1 - file: d184546dncsrs.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.CERT <SEQUENCE>2 <FILENAME>d184546dex99cert.htm <DESCRIPTION>SECTION 302 CERTIFICATIONS <TEXT> Document 2 - file: d184546dex99cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.906CERT <SEQUENCE>3 <FILENAME>d184546dex99906cert.htm <DESCRIPTION>SECTION 906 CERTIFICATIONS <TEXT> Document 3 - file: d184546dex99906cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.30E3 NOTICE <SEQUENCE>4 <FILENAME>d184546dex9930e3notice.htm <DESCRIPTION>30E3 NOTICE <TEXT> Document 4 - file: d184546dex9930e3notice.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.(19)(A)(1) <SEQUENCE>5 <FILENAME>d184546dex9919a1.htm <DESCRIPTION>NOTICE TO SHAREHOLDERS - SOURCE OF DISTRIBUTION <TEXT> Document 5 - file: d184546dex9919a1.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>6 <FILENAME>g184546g00n98.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 6 - file: g184546g00n98.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>7 <FILENAME>g184546g02z03.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 7 - file: g184546g02z03.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>g184546g0720012810235.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 8 - file: g184546g0720012810235.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>g184546g0720013144938.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 9 - file: g184546g0720013144938.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>10 <FILENAME>g184546g0720013349412.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 10 - file: g184546g0720013349412.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>g184546g0720013610367.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 11 - file: g184546g0720013610367.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>12 <FILENAME>g184546g0720013846830.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 12 - file: g184546g0720013846830.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>13 <FILENAME>g184546g0720014119787.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 13 - file: g184546g0720014119787.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>14 <FILENAME>g184546g51l72.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 14 - file: g184546g51l72.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>15 <FILENAME>g184546g91k63.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 15 - file: g184546g91k63.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>16 <FILENAME>g184546g95m22.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 16 - file: g184546g95m22.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>17 <FILENAME>g184546img1a5cbd2c1.gif <DESCRIPTION>GRAPHIC <TEXT> Document 17 - file: g184546img1a5cbd2c1.gif
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>18 <FILENAME>g184546img1de469b63.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 18 - file: g184546img1de469b63.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>19 <FILENAME>g184546img4a268e422.gif <DESCRIPTION>GRAPHIC <TEXT> Document 19 - file: g184546img4a268e422.gif
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>20 <FILENAME>g184546img949f9f726.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 20 - file: g184546img949f9f726.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>21 <FILENAME>g184546imgbfdc9a324.gif <DESCRIPTION>GRAPHIC <TEXT> Document 21 - file: g184546imgbfdc9a324.gif
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>22 <FILENAME>g184546imge323126e5.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 22 - file: g184546imge323126e5.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>23 <FILENAME>g184546imgf448ae1b7.gif <DESCRIPTION>GRAPHIC <TEXT> Document 23 - file: g184546imgf448ae1b7.gif
</DOCUMENT> </SEC-DOCUMENT>