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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0000912938-07-000020.txt : 20070126
<SEC-HEADER>0000912938-07-000020.hdr.sgml : 20070126
<ACCEPTANCE-DATETIME>20070126142603
ACCESSION NUMBER:		0000912938-07-000020
CONFORMED SUBMISSION TYPE:	NSAR-B
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20061130
FILED AS OF DATE:		20070126
DATE AS OF CHANGE:		20070126
EFFECTIVENESS DATE:		20070126

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MFS CHARTER INCOME TRUST
		CENTRAL INDEX KEY:			0000851170
		IRS NUMBER:				043055815
		FISCAL YEAR END:			1130

	FILING VALUES:
		FORM TYPE:		NSAR-B
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-05822
		FILM NUMBER:		07555941

	BUSINESS ADDRESS:	
		STREET 1:		500 BOYLSTON ST
		STREET 2:		15TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		18006372929

	MAIL ADDRESS:	
		STREET 1:		500 BOYLSTON STREET
		STREET 2:		15TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MFS PRINCIPAL INCOME TRUST
		DATE OF NAME CHANGE:	19890906
</SEC-HEADER>
<DOCUMENT>
<TYPE>NSAR-B
<SEQUENCE>1
<FILENAME>answer.fil
<TEXT>
<PAGE>      PAGE  1
000 B000000 11/30/2006
000 C000000 0000851170
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 MFS CHARTER INCOME TRUST
001 B000000 811-5822
001 C000000 6179545000
002 A000000 500 BOYLSTON STREET
002 B000000 BOSTON
002 C000000 MA
002 D010000 02116
003  000000 N
004  000000 N
005  000000 N
006  000000 N
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008 B000001 A
008 C000001 801-17352
008 D010001 BOSTON
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008 D030001 02116
010 A000001 MASSACHUSETTS FINANCIAL SERVICES COMPANY
010 B000001 801-17352
010 C010001 BOSTON
010 C020001 MA
010 C030001 02116
012 A000001 MFS SERVICE CENTER, INC.
012 B000001 84-1316
012 C010001 BOSTON
012 C020001 MA
012 C030001 02116
013 A000001 ERNST & YOUNG LLP
013 B010001 BOSTON
013 B020001 MA
013 B030001 02116
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015 B000001 C
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015 C030001 02110
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015 A000002 STATE STREET BANK INTERNATIONAL
015 B000002 S
<PAGE>      PAGE  2
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015 C020002 MA
015 C030002 02110
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015 A000003 THE BANK OF NEW YORK
015 B000003 S
015 C010003 NEW YORK
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020 A000001 GOLDMAN SACHS GROUP, INC.
020 B000001 13-5108880
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022 B000001 06-1362678
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022 A000009 AMERICAN EXPRESS CO.
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<PAGE>      PAGE  3
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<PAGE>      PAGE  4
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<PAGE>      PAGE  5
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<PAGE>      PAGE  6
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<PAGE>      PAGE  7
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<PAGE>      PAGE  8
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077 B000000 Y
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078  000000 N
080 A000000 AIG/CHUBB (co-surety)
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<PAGE>      PAGE  9
083 B000000        0
084 A000000 N
084 B000000        0
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087 A030000 MCR
088 A000000 N
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SIGNATURE   JIM YOST
TITLE       ASSISTANT TREASURER

</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77Q2 ITEM 405
<SEQUENCE>2
<FILENAME>q772.txt
<TEXT>
                                  SUB-ITEM 77Q2

Based  solely  on a review  of the  copies  of  Forms 3, 4 and 5 and  amendments
thereto  furnished to MFS Charter Income Trust (the "Trust") with respect to its
most recent  fiscal year for  Trustees,  directors  and certain  officers of the
Trust and MFS and greater than ten percent beneficial owners, the Trust believes
all Section 16(a) filing  requirements  were made on a timely basis,  except for
the following filings:  John Addeo (Portfolio  Manager) made a Form 3 and a Form
3A filing for the Trust on March 3, 2006 and March 6, 2006, respectively;  Scott
B. Richards  (Portfolio  Manager) made a Form 3 filing for the Trust on March 3,
2006; Matthew W. Ryan (Portfolio Manager) made a Form 3 and a Form 3A filing for
the Trust on March 3, 2006 and March 6,  2006,  respectively;  Robert E.  Butler
(Trustee) made a Form 4 (Changes of Beneficial  Ownership)  filing for the Trust
on June 29, 2006;  Elaine R. Smith (Former  Trustee) made a Form 4 (Statement of
Changes of Beneficial  Ownership)  filing for the Trust on December 14, 2005. To
the extent  that any Form 3, 3A and 4 filings  were not made on a timely  basis,
certain Form 5 (Annual  Statement of Changes of  Beneficial  Ownership)  filings
were not filed on a timely basis as well.
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77B ACCT LTTR
<SEQUENCE>3
<FILENAME>b77.txt
<TEXT>







             Report of Independent Registered Public Accounting Firm

To the Trustees and Shareholders of
MFS Charter Income Trust

In planning and performing our audit of the financial  statements of MFS Charter
Income    Trust,    (the    Fund)    as   of   and    for   the    year    ended
November   30,  2006,  in  accordance   with  the
standards of the Public Company Accounting  Oversight Board (United States),  we
considered its internal  control over  financial  reporting,  including  control
activities for  safeguarding  securities,  as a basis for designing our auditing
procedures for the purpose of expressing our opinion on the financial statements
and to comply with the  requirements  of Form N-SAR,  but not for the purpose of
expressing an opinion on the  effectiveness  of the Fund's internal control over
financial reporting. Accordingly, we express no such opinion.

The  management of the Fund is  responsible  for  establishing  and  maintaining
effective  internal  control  over  financial  reporting.   In  fulfilling  this
responsibility, estimates and judgments by management are required to assess the
expected  benefits and related costs of controls.  A companys  internal control
over financial  reporting is a process designed to provide reasonable  assurance
regarding  the  reliability  of  financial  reporting  and  the  preparation  of
financial statements for external purposes in accordance with generally accepted
accounting  principles.  Such internal control includes  policies and procedures
that provide reasonable  assurance  regarding  prevention or timely detection of
unauthorized  acquisition,  use or disposition of a companys  assets that could
have a material effect on the financial statements.

Because of its inherent  limitations,  internal control over financial reporting
may not prevent or detect misstatements.  Also, projections of any evaluation of
effectiveness to future periods are subject to the risk that controls may become
inadequate  because of changes in  conditions,  or that the degree of compliance
with the policies or procedures may deteriorate.

A control  deficiency  exists when the design or operation of a control does not
allow management or employees, in the normal course of performing their assigned
functions,  to prevent or detect  misstatements on a timely basis. A significant
deficiency is a control deficiency, or combination of control deficiencies, that
adversely affects the company's ability to initiate,  authorize, record, process
or report external financial data reliably in accordance with generally accepted
accounting  principles  such that there is more than a remote  likelihood that a
misstatement  of the company's  annual or interim  financial  statements that is
more than inconsequential will not be prevented or detected. A material weakness
is a significant deficiency,  or combination of significant  deficiencies,  that
results in more than a remote  likelihood  that a material  misstatement  of the
annual or interim financial statements will not be prevented or detected.

Our  consideration of the Funds internal  control over financial  reporting was
for  the  limited  purpose  described  in the  first  paragraph  and  would  not
necessarily  disclose  all  deficiencies  in  internal  control  that  might  be
significant  deficiencies or material weaknesses under standards  established by
the  Public  Company  Accounting   Oversight  Board   (United
States).  However,  we noted no deficiencies in the Funds internal control over
financial  reporting  and its  operation,  including  controls for  safeguarding
securities,  that we consider to be a material  weakness as defined  above as of
November 30, 2006.

This report is intended solely for the information and use of management and the
Board of Trustees of MFS Charter  Income Trust and the  Securities  and Exchange
Commission and is not intended to be and should not be used by anyone other than
these specified parties.

 Ernst & Young LLP

 January 18, 2007


</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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