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SIGNATURE DOUGLAS A. ROMICH
TITLE ASSISTANT TREASURER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
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<NAME> STATE STREET RESEARCH MANAGED ASSETS CLASS C
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> MAR-31-1999
<PERIOD-END> MAR-31-1999
<INVESTMENTS-AT-COST> 763,737,687
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<OTHER-ITEMS-LIABILITIES> 101,161,294
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<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 657,502,451
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<ACCUM-APPREC-OR-DEPREC> 60,035,994
<NET-ASSETS> 719,227,405
<DIVIDEND-INCOME> 4,258,240
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<NET-INVESTMENT-INCOME> 13,936,948
<REALIZED-GAINS-CURRENT> 26,894,384
<APPREC-INCREASE-CURRENT> (49,954,566)
<NET-CHANGE-FROM-OPS> (9,123,234)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (288,622)
<DISTRIBUTIONS-OF-GAINS> (1,782,441)
<DISTRIBUTIONS-OTHER> (30,773)
<NUMBER-OF-SHARES-SOLD> 412,134
<NUMBER-OF-SHARES-REDEEMED> (673,754)
<SHARES-REINVESTED> 180,791
<NET-CHANGE-IN-ASSETS> (30,622,854)
<ACCUMULATED-NII-PRIOR> 2,015,262
<ACCUMULATED-GAINS-PRIOR> 29,827,380
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 5,412,219
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 12,172,737
<AVERAGE-NET-ASSETS> 729,896,164
<PER-SHARE-NAV-BEGIN> 11.57
<PER-SHARE-NII> 0.17
<PER-SHARE-GAIN-APPREC> (0.34)
<PER-SHARE-DIVIDEND> (0.14)
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<RETURNS-OF-CAPITAL> (0.01)
<PER-SHARE-NAV-END> 10.38
<EXPENSE-RATIO> 2.03
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000787980
<NAME> STATE STREET RESEARCH INCOME TRUST
<SERIES>
<NUMBER> 035
<NAME> STATE STREET RESEARCH MANAGED ASSETS CLASS B1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> MAR-31-1999
<PERIOD-END> MAR-31-1999
<INVESTMENTS-AT-COST> 763,737,687
<INVESTMENTS-AT-VALUE> 822,661,476
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<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 101,161,294
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<NET-ASSETS> 719,227,405
<DIVIDEND-INCOME> 4,258,240
<INTEREST-INCOME> 21,785,882
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<NET-INVESTMENT-INCOME> 13,936,948
<REALIZED-GAINS-CURRENT> 26,894,384
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<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (42,086)
<DISTRIBUTIONS-OF-GAINS> 0
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<NUMBER-OF-SHARES-SOLD> 1,015,988
<NUMBER-OF-SHARES-REDEEMED> (27,017)
<SHARES-REINVESTED> 4,081
<NET-CHANGE-IN-ASSETS> (30,622,854)
<ACCUMULATED-NII-PRIOR> 2,015,262
<ACCUMULATED-GAINS-PRIOR> 29,827,380
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 5,412,219
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 12,172,737
<AVERAGE-NET-ASSETS> 729,896,164
<PER-SHARE-NAV-BEGIN> 10.35
<PER-SHARE-NII> 0.04
<PER-SHARE-GAIN-APPREC> 0.01
<PER-SHARE-DIVIDEND> (0.04)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.36
<EXPENSE-RATIO> 2.08
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000787980
<NAME> STATE STREET RESEARCH INCOME TRUST
<SERIES>
<NUMBER> 011
<NAME> STATE STREET RESEARCH HIGH INCOME FUND CLASS A
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> MAR-31-1999
<PERIOD-END> MAR-31-1999
<INVESTMENTS-AT-COST> 1,201,194,497
<INVESTMENTS-AT-VALUE> 1,110,342,291
<RECEIVABLES> 27,186,399
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<OTHER-ITEMS-LIABILITIES> 45,812,747
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<PAID-IN-CAPITAL-COMMON> 1,190,106,901
<SHARES-COMMON-STOCK> 114,689,932
<SHARES-COMMON-PRIOR> 108,622,224
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<ACCUM-APPREC-OR-DEPREC> (90,908,121)
<NET-ASSETS> 1,086,095,970
<DIVIDEND-INCOME> 11,314,514
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<NET-INVESTMENT-INCOME> 101,271,406
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<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (65,376,715)
<DISTRIBUTIONS-OF-GAINS> (9,878,189)
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<NUMBER-OF-SHARES-SOLD> 20,276,045
<NUMBER-OF-SHARES-REDEEMED> 24,073,358
<SHARES-REINVESTED> 9,865,021
<NET-CHANGE-IN-ASSETS> (20,851,357)
<ACCUMULATED-NII-PRIOR> 2,927,957
<ACCUMULATED-GAINS-PRIOR> 11,432,291
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 6,463,062
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 14,264,259
<AVERAGE-NET-ASSETS> 1,085,161,307
<PER-SHARE-NAV-BEGIN> 6.62
<PER-SHARE-NII> 0.58
<PER-SHARE-GAIN-APPREC> (0.80)
<PER-SHARE-DIVIDEND> (0.58)
<PER-SHARE-DISTRIBUTIONS> (0.09)
<RETURNS-OF-CAPITAL> (0.08)
<PER-SHARE-NAV-END> 5.65
<EXPENSE-RATIO> 1.06
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000787980
<NAME> STATE STREET RESEARCH INCOME TRUST
<SERIES>
<NUMBER> 012
<NAME> STATE STREET RESEARCH HIGH INCOME FUND CLASS B
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> MAR-31-1999
<PERIOD-END> MAR-31-1999
<INVESTMENTS-AT-COST> 1,201,194,497
<INVESTMENTS-AT-VALUE> 1,110,342,291
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<ASSETS-OTHER> 197,527
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<PAYABLE-FOR-SECURITIES> 5,817,500
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 45,812,747
<TOTAL-LIABILITIES> 51,630,247
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,190,106,901
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<NET-ASSETS> 1,086,095,970
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<NET-INVESTMENT-INCOME> 101,271,406
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<DISTRIBUTIONS-OF-INCOME> (31,354,348)
<DISTRIBUTIONS-OF-GAINS> (4,999,368)
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<NUMBER-OF-SHARES-SOLD> 16,017,044
<NUMBER-OF-SHARES-REDEEMED> 12,746,528
<SHARES-REINVESTED> 4,070,962
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<ACCUMULATED-NII-PRIOR> 2,927,957
<ACCUMULATED-GAINS-PRIOR> 11,432,291
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<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 6,463,062
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 14,264,259
<AVERAGE-NET-ASSETS> 1,085,161,307
<PER-SHARE-NAV-BEGIN> 6.58
<PER-SHARE-NII> 0.53
<PER-SHARE-GAIN-APPREC> (0.79)
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<PER-SHARE-NAV-END> 5.62
<EXPENSE-RATIO> 1.81
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000787980
<NAME> STATE STREET RESEARCH INCOME TRUST
<SERIES>
<NUMBER> 013
<NAME> STATE STREET RESEARCH HIGH INCOME FUND CLASS S
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> MAR-31-1999
<PERIOD-END> MAR-31-1999
<INVESTMENTS-AT-COST> 1,201,194,497
<INVESTMENTS-AT-VALUE> 1,110,342,291
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<SENIOR-LONG-TERM-DEBT> 0
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<TOTAL-LIABILITIES> 51,630,247
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<PAID-IN-CAPITAL-COMMON> 1,190,106,901
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<SHARES-COMMON-PRIOR> 1,194,458
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<NET-INVESTMENT-INCOME> 101,271,406
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<EQUALIZATION> 0
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<DISTRIBUTIONS-OF-GAINS> (185,070)
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<NET-CHANGE-IN-ASSETS> (20,851,357)
<ACCUMULATED-NII-PRIOR> 2,927,957
<ACCUMULATED-GAINS-PRIOR> 11,432,291
<OVERDISTRIB-NII-PRIOR> 0
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<GROSS-EXPENSE> 14,264,259
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<PER-SHARE-NAV-BEGIN> 6.58
<PER-SHARE-NII> 0.58
<PER-SHARE-GAIN-APPREC> (0.79)
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<RETURNS-OF-CAPITAL> (0.08)
<PER-SHARE-NAV-END> 5.61
<EXPENSE-RATIO> 0.81
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000787980
<NAME> STATE STREET RESEARCH INCOME TRUST
<SERIES>
<NUMBER> 014
<NAME> STATE STREET RESEARCH HIGH INCOME FUND CLASS C
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> MAR-31-1999
<PERIOD-END> MAR-31-1999
<INVESTMENTS-AT-COST> 1,201,194,497
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<OTHER-ITEMS-LIABILITIES> 45,812,747
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<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,190,106,901
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<DISTRIBUTIONS-OF-INCOME> (3,495,607)
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<NUMBER-OF-SHARES-SOLD> 4,100,226
<NUMBER-OF-SHARES-REDEEMED> (2,663,155)
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<NET-CHANGE-IN-ASSETS> (20,851,357)
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<ACCUMULATED-GAINS-PRIOR> 11,432,291
<OVERDISTRIB-NII-PRIOR> 0
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<GROSS-ADVISORY-FEES> 6,463,062
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 14,264,259
<AVERAGE-NET-ASSETS> 1,085,161,307
<PER-SHARE-NAV-BEGIN> 6.59
<PER-SHARE-NII> 0.53
<PER-SHARE-GAIN-APPREC> (0.79)
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<RETURNS-OF-CAPITAL> (0.08)
<PER-SHARE-NAV-END> 5.63
<EXPENSE-RATIO> 1.81
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000787980
<NAME> STATE STREET RESEARCH INCOME TRUST
<SERIES>
<NUMBER> 015
<NAME> STATE STREET RESEARCH HIGH INCOME FUND CLASS B1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> MAR-31-1999
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<PAID-IN-CAPITAL-COMMON> 1,190,106,901
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<GROSS-EXPENSE> 14,264,259
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<PER-SHARE-NAV-BEGIN> 5.62
<PER-SHARE-NII> 0.12
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<PER-SHARE-DIVIDEND> (0.13)
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<PER-SHARE-NAV-END> 5.62
<EXPENSE-RATIO> 1.74
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000787980
<NAME> STATE STREET RESEARCH INCOME TRUST
<SERIES>
<NUMBER> 033
<NAME> STATE STREET RESEARCH MANAGED ASSETS CLASS S
<S> <C>
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<FISCAL-YEAR-END> MAR-31-1999
<PERIOD-END> MAR-31-1999
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<NUMBER-OF-SHARES-REDEEMED> (1,520,824)
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<AVERAGE-NET-ASSETS> 729,896,164
<PER-SHARE-NAV-BEGIN> 11.60
<PER-SHARE-NII> 0.27
<PER-SHARE-GAIN-APPREC> (0.34)
<PER-SHARE-DIVIDEND> (0.25)
<PER-SHARE-DISTRIBUTIONS> (0.87)
<RETURNS-OF-CAPITAL> (0.01)
<PER-SHARE-NAV-END> 10.40
<EXPENSE-RATIO> 1.03
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
