<PAGE> PAGE 1
000 B000000 12/31/99
000 C000000 0000810766
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 A
001 A000000 CSAM INCOME FUND, INC.
001 B000000 811-05012
001 C000000 8002931232
002 A000000 153 EAST 53RD STREET
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10022
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
008 A000001 CREDIT SUISSE ASSET MANAGEMENT
008 B000001 A
008 C000001 801-0
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10022
010 A000001 BROWN BROTHERS HARRIMAN & CO.
010 C010001 BOSTON
010 C020001 MA
010 C030001 02109
012 A000001 BANKBOSTON, N.A.
012 B000001 84-0001281
012 C010001 BOSTON
012 C020001 MA
012 C030001 02105
012 C040001 1865
013 A000001 PRICEWATERHOUSECOOPERS LLP
013 B010001 PHILADELPHIA
013 B020001 PA
<PAGE> PAGE 2
013 B030001 19103
015 A000001 BROWN BROTHERS HARRIMAN & CO.
015 B000001 C
015 C010001 BOSTON
015 C020001 MA
015 C030001 02109
015 E010001 X
018 000000 Y
019 A000000 Y
019 B000000 2
019 C000000 CRDT SUISS
020 A000001 CANTOR FITZGERALD & CO.
020 B000001 13-2698893
020 C000001 1
020 C000002 0
020 C000003 0
020 C000004 0
020 C000005 0
020 C000006 0
020 C000007 0
020 C000008 0
020 C000009 0
020 C000010 0
021 000000 1
022 A000001 BROWN BROTHERS HARRIMAN & CO
022 B000001 13-4973745
022 C000001 15270
022 D000001 36997
022 A000002 SALOMON BROTHERS, INC.
022 B000002 13-3082694
022 C000002 20508
022 D000002 15446
022 A000003 GOLDMAN SACHS & CO.
022 B000003 13-5108880
022 C000003 18888
022 D000003 9097
022 A000004 ENSKILDA SECURITIES PARIS
022 B000004 13-3497509
022 C000004 0
022 D000004 25836
022 A000005 SPEAR, LEEDS & KELLOGG
022 B000005 13-5515160
022 C000005 25193
022 D000005 495
022 A000006 DONALDSON, LUFKIN & JENRETTE SECURITIES
022 B000006 13-2747129
022 C000006 11432
022 D000006 13762
022 A000007 MORGAN STANLEY & CO. INC.
022 B000007 13-2655998
022 C000007 6375
<PAGE> PAGE 3
022 D000007 4303
022 A000008 GRANTCHESTER SECURITIES,INC.
022 C000008 6206
022 D000008 3614
022 A000009 MERRILL LYNCH
022 B000009 13-5674085
022 C000009 5041
022 D000009 3752
022 A000010 GREENWICH CAPITAL MARKETS, INC.
022 B000010 13-2932966
022 C000010 4689
022 D000010 3724
023 C000000 138783
023 D000000 143610
024 000000 Y
025 A000001 GOLDMAN SACHS
025 B000001 13-5108880
025 C000001 D
025 D000001 429
025 A000002 MORGAN STANLEY
025 B000002 13-2655998
025 C000002 D
025 D000002 368
025 A000003 DELETE
025 D000003 0
025 A000004 DELETE
025 D000004 0
025 A000005 DELETE
025 D000005 0
025 A000006 DELETE
025 D000006 0
025 A000007 DELETE
025 D000007 0
025 A000008 DELETE
025 D000008 0
026 A000000 N
026 B000000 Y
026 C000000 Y
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 N
028 A010000 0
028 A020000 0
028 A030000 0
028 A040000 0
028 B010000 0
028 B020000 0
<PAGE> PAGE 4
028 B030000 0
028 B040000 0
028 C010000 0
028 C020000 0
028 C030000 0
028 C040000 0
028 D010000 0
028 D020000 0
028 D030000 0
028 D040000 0
028 E010000 0
028 E020000 0
028 E030000 0
028 E040000 0
028 F010000 0
028 F020000 0
028 F030000 0
028 F040000 0
028 G010000 0
028 G020000 0
028 G030000 0
028 G040000 0
028 H000000 0
030 A000000 0
030 B000000 0.00
030 C000000 0.00
031 A000000 0
031 B000000 0
032 000000 0
033 000000 0
035 000000 0
036 B000000 0
038 000000 0
042 A000000 0
042 B000000 0
042 C000000 0
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 0
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.500
048 A010000 0
048 A020000 0.000
048 B010000 0
048 B020000 0.000
<PAGE> PAGE 5
048 C010000 0
048 C020000 0.000
048 D010000 0
048 D020000 0.000
048 E010000 0
048 E020000 0.000
048 F010000 0
048 F020000 0.000
048 G010000 0
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 0
048 K020000 0.000
049 000000 N
050 000000 N
051 000000 N
052 000000 N
053 A000000 N
054 A000000 Y
054 B000000 Y
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 Y
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 N
055 A000000 N
055 B000000 N
056 000000 Y
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
060 B000000 Y
061 000000 0
062 A000000 Y
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
<PAGE> PAGE 6
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.3
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 1.3
062 O000000 0.0
062 P000000 84.1
062 Q000000 2.4
062 R000000 9.7
063 A000000 0
063 B000000 7.9
064 A000000 N
064 B000000 Y
065 000000 N
066 A000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 N
070 B010000 Y
070 B020000 N
070 C010000 Y
070 C020000 N
070 D010000 Y
070 D020000 N
070 E010000 Y
070 E020000 N
070 F010000 Y
070 F020000 N
070 G010000 Y
070 G020000 N
070 H010000 Y
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 Y
070 K010000 N
070 K020000 N
070 L010000 Y
070 L020000 Y
070 M010000 Y
070 M020000 Y
070 N010000 Y
<PAGE> PAGE 7
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 Y
070 R020000 N
071 A000000 111188
071 B000000 118323
071 C000000 255449
071 D000000 44
072 A000000 12
072 B000000 27774
072 C000000 181
072 D000000 0
072 E000000 0
072 F000000 1304
072 G000000 203
072 H000000 0
072 I000000 97
072 J000000 81
072 K000000 0
072 L000000 137
072 M000000 45
072 N000000 0
072 O000000 0
072 P000000 0
072 Q000000 0
072 R000000 43
072 S000000 45
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 85
072 X000000 2040
072 Y000000 0
072 Z000000 25915
072AA000000 0
072BB000000 5299
072CC010000 0
072CC020000 10359
072DD010000 24986
072DD020000 0
072EE000000 0
073 A010000 0.7200
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
074 A000000 0
<PAGE> PAGE 8
074 B000000 0
074 C000000 848
074 D000000 223819
074 E000000 8926
074 F000000 13702
074 G000000 0
074 H000000 0
074 I000000 1886
074 J000000 40
074 K000000 0
074 L000000 6116
074 M000000 5
074 N000000 255342
074 O000000 0
074 P000000 317
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 168
074 S000000 0
074 T000000 254857
074 U010000 34708
074 U020000 0
074 V010000 7.34
074 V020000 0.00
074 W000000 0.0000
074 X000000 3148
074 Y000000 0
075 A000000 0
075 B000000 261744
076 000000 6.06
077 A000000 Y
077 B000000 Y
077 C000000 N
077 D000000 N
077 E000000 N
077 F000000 N
077 G000000 N
077 H000000 N
077 I000000 N
077 J000000 N
077 K000000 N
077 L000000 N
077 M000000 N
077 N000000 N
077 O000000 N
077 P000000 N
077 Q010000 Y
077 Q020000 N
077 Q030000 N
<PAGE> PAGE 9
078 000000 N
080 A000000 GULF INSURANCE CO.
080 C000000 6500
081 A000000 Y
081 B000000 10
082 A000000 N
082 B000000 0
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
086 A010000 10
086 A020000 79
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
087 A010000 COMMON STOCK
087 A020000 224916106
087 A030000 CIK
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 N
SIGNATURE JOHN HOGAN
TITLE ASSISTANT TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This Financial Data Schedule contains summary financial information
extracted from the annual report filed on Form N-SAR and is qualified
in its entirety by reference to such annual report on Form N-SAR.
</LEGEND>
<CIK> 0000810766
<NAME> CSAM INCOME FUND, INC.
<SERIES>
<NAME> CSAM INCOME FUND, INC.
<NUMBER> 1
<MULTIPLIER> 1
<CURRENCY> US DOLLARS
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-1999
<PERIOD-END> DEC-31-1999
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 276121293
<INVESTMENTS-AT-VALUE> 249180706
<RECEIVABLES> 6156303
<ASSETS-OTHER> 5447
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 255342456
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 485501
<TOTAL-LIABILITIES> 485501
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 292824686
<SHARES-COMMON-STOCK> 34708
<SHARES-COMMON-PRIOR> 34698
<ACCUMULATED-NII-CURRENT> 2296006
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (13357858)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (26940587)
<NET-ASSETS> 254856955
<DIVIDEND-INCOME> 181344
<INTEREST-INCOME> 27773879
<OTHER-INCOME> 0
<EXPENSES-NET> (2040466)
<NET-INVESTMENT-INCOME> 25914757
<REALIZED-GAINS-CURRENT> (5299393)
<APPREC-INCREASE-CURRENT> (10358673)
<NET-CHANGE-FROM-OPS> 10256691
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (24985674)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 10356
<NET-CHANGE-IN-ASSETS> (14650331)
<ACCUMULATED-NII-PRIOR> 140573
<ACCUMULATED-GAINS-PRIOR> (7715085)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1304143
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2040466
<AVERAGE-NET-ASSETS> 261743923
<PER-SHARE-NAV-BEGIN> 7.77
<PER-SHARE-NII> 0.75
<PER-SHARE-GAIN-APPREC> (0.46)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (0.72)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 7.34
<EXPENSE-RATIO> 0.78
</TABLE>
