ICTXX Investors Cash Trust (MM)

000 B000000 08/31/2012
000 C000000 0000863209
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 INVESTORS CASH TRUST
001 B000000 811-06103
001 C000000 2015936408
002 A000000 345 Park Avenue
002 B000000 New York
002 C000000 NY
002 D010000 10154
002 D020000 5808
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 3
007 C010400 4
007 C020400 DWS Variable NAV Money Fund
007 C030400 N
008 A00AA01 DEUTSCHE INVESTMENT MANAGEMENT AMERICAS INC.
008 B00AA01 A
008 C00AA01 801-252
008 D01AA01 NEW YORK
008 D02AA01 NY
008 D03AA01 10154
010 A000401 Deutsche Investment Management Americas Inc.
010 B000401 801-252
010 C010401 New York
010 C020401 NY
010 C030401 10154
010 A000402 State Street Bank & Trust Co.
010 B000402 85-11329
010 C010402 Boston
010 C020402 MA
010 C030402 02111
011 A00AA01 DWS INVESTMENTS DISTRIBUTORS, INC.
011 B00AA01 8-47765
011 C01AA01 CHICAGO
011 C02AA01 IL
011 C03AA01 60606
012 A000401 DWS INVESTMENTS SERVICE COMPANY
012 B000401 84-1713
012 C010401 KANSAS CITY
012 C020401 MO

012 C030401 64105
012 A000402 DST SYSTEMS, INC.
012 B000402 84-00448
012 C010402 KANSAS CITY
012 C020402 MO
012 C030402 64105
013 A00AA01 ERNST & YOUNG LLP
013 B01AA01 BOSTON
013 B02AA01 MA
013 B03AA01 02116
014 A00AA01 AO DB Securities (Kazakhstan)
014 B00AA01 8-000000
014 A00AA02 BT Opera Trading SA
014 B00AA02 8-000000
014 A00AA03 DB EQUITY LIMITED
014 B00AA03 8-0
014 A00AA04 DB International (Asia) Limited
014 B00AA04 8-000000
014 A00AA05 DB SECURITIES S.A.
014 B00AA05 8-000000
014 A00AA06 DB Securities Services NJ Inc.
014 B00AA06 8-000000
014 A00AA07 Deutsche Bank Aktiengesellschaft, Filiale
014 B00AA07 8-000000
014 A00AA08 DEUTSCHE BANK CORRETORA DE VALORES SA
014 B00AA08 8-0
014 A00AA09 DEUTSCHE BANK SECURITIES, INC.
014 B00AA09 8-017822
014 A00AA10 DEUTSCHE BANK SECURITIES LIMITED
014 B00AA10 8-0
014 A00AA11 Deutsche Bank Societa per Azioni
014 B00AA11 8-000000
014 A00AA12 Deutsche Bank Zartkoruen Mukodo
014 B00AA12 8-000000
014 A00AA13 DEUTSCHE CAPITAL MARKETS AUSTRALIA LTD
014 B00AA13 8-0
014 A00AA14 Deutsche Equities India Private Limited
014 B00AA14 8-000000
014 A00AA15 Deutsche Futures Singapore Pte Ltd
014 B00AA15 8-0
014 A00AA16 Deutsche Regis Partners Inc
014 B00AA16 8-000000
014 A00AA17 DEUTSCHE SECURITIES (INDIA) PRIVATE LIMITED
014 B00AA17 8-0
014 A00AA18 Deutsche Securities (Proprietary) Limited
014 B00AA18 8-000000
014 A00AA19 DEUTSCHE SECURITIES ASIA LIMITED
014 B00AA19 8-0
014 A00AA20 Deutsche Securities Asia Limited, Singapore
014 B00AA20 8-0
014 A00AA21 Deutsche Securities Asia Limited, Taipei

014 B00AA21 8-0
014 A00AA22 Deutsche Securities Australia Limited
014 B00AA22 8-031670
014 A00AA23 DEUTSCHE SECURITIES CORREDORES DE BOLSA LTDA
014 B00AA23 8-0
014 A00AA24 Deutsche Securities Inc.
014 B00AA24 8-000000
014 A00AA25 Deutsche Securities Israel Ltd.
014 B00AA25 8-000000
014 A00AA26 DEUTSCHE SECURITIES KOREA CO.
014 B00AA26 8-0
014 A00AA27 Deutsche Securities Limited
014 B00AA27 8-0
014 A00AA28 Deutsche Securities Menkul Degerler A.S.
014 B00AA28 8-000000
014 A00AA29 Deutsche Securities Sociedad de Bolsa S.A.
014 B00AA29 8-000000
014 A00AA30 Deutsche Securities Venezuela S.A.
014 B00AA30 8-000000
014 A00AA31 Deutsche Securities, S.A. de C.V., Bolsa
014 B00AA31 8-000000
014 A00AA32 DMG & PARTNERS SECURITIES PTE LTD
014 B00AA32 8-0
014 A00AA33 DWS INVESTMENTS DISTRIBUTORS, INC.
014 B00AA33 8-047765
014 A00AA34 K & N Kenanga Holdings Bhd
014 B00AA34 8-000000
014 A00AA35 Kenanga Deutsche Futures Sdn Bhd
014 B00AA35 8-000000
014 A00AA36 OOO Deutsche Bank
014 B00AA36 8-000000
014 A00AA37 PT. Deutsche Securities Indonesia
014 B00AA37 8-000000
014 A00AA38 PT. Deutsche Verdhana Indonesia
014 B00AA38 8-000000
014 A00AA39 Tilney Investment Management
014 B00AA39 8-000000
014 A00AA40 Yieldbroker Pty Ltd.
014 B00AA40 8-000000
014 A00AA41 ZAO Deutsche Securities
014 B00AA41 8-00000
014 A00AA42 DB STRATEGIC ADVISORS, INC.
014 B00AA42 8-000000
014 A00AA43 DEUTSCHE SECURITIES SAUDI ARABIA LLC
014 B00AA43 8-000000
014 A00AA44 HANOI BUILDING COMMERCIAL JOINT STOCK BANK
014 B00AA44 8-000000
014 A00AA45 Deutsche Postbank AG
014 B00AA45 8-0
014 A00AA46 BHF-BANK Aktiengesellschaft
014 B00AA46 8-00000

014 A00AA47 Sal. Oppenheim jr. & Cie. AG & Co.
014 B00AA47 8-00000
014 A00AA48 Deutsche Bank Europe GMbh, Filiale Budapest
014 B00AA48 8-00000
014 A00AA49 Deutsche Capital Markets Algeria SPA
014 B00AA49 8-00000
014 A00AA50 Deutsche Managed Investments Limited
014 B00AA50 8-00000
014 A00AA51 Public joint-stock Co "Deutsche Bank DBU"
014 B00AA51 8-00000
014 A00AA52 London Dry Bulk Limited
014 B00AA52 8-00000
015 A00AA01 STATE STREET BANK & TRUST CO.
015 B00AA01 C
015 C01AA01 BOSTON
015 C02AA01 MA
015 C03AA01 02111
015 E01AA01 X
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 107
019 C00AA00 DWSFUNDSSS
021 000000 0
022 A000001 CITIGROUP
022 B000001 13-3082694
022 C000001 175428
022 D000001 1850
022 A000002 CHASE SECURITIES INC.
022 B000002 13-3224016
022 C000002 73180
022 D000002 2550
022 A000003 BARCLAYS CAPITAL
022 B000003 13-3297824
022 C000003 42667
022 D000003 300
022 A000004 PERSHING LLC
022 B000004 13-2741729
022 C000004 23146
022 D000004 1300
022 A000005 NOMURA SECURITIES
022 B000005 13-2642206
022 C000005 22753
022 D000005 0
022 A000006 GENERAL ELECTRIC CAPITAL CORP.
022 B000006 13-1500700
022 C000006 17713
022 D000006 0
022 A000007 MORGAN STANLEY
022 B000007 13-2655998
022 C000007 14276
022 D000007 750

022 A000008 CREDIT SUISSE
022 B000008 05-0546650
022 C000008 14674
022 D000008 0
022 A000009 GOLDMAN SACHS & CO.
022 B000009 13-3175029
022 C000009 13053
022 D000009 0
022 A000010 BANK OF AMERICA CORP.
022 B000010 13-4078651
022 C000010 9680
022 D000010 252
023 C000000 433103
023 D000000 12241
024 000400 N
026 A000000 N
026 B000000 N
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 Y
028 A010400 1000
028 A020400 2
028 A030400 0
028 A040400 0
028 B010400 1688
028 B020400 2
028 B030400 0
028 B040400 0
028 C010400 0
028 C020400 3
028 C030400 0
028 C040400 0
028 D010400 3000
028 D020400 3
028 D030400 0
028 D040400 0
028 E010400 0
028 E020400 3
028 E030400 0
028 E040400 0
028 F010400 0
028 F020400 4
028 F030400 0
028 F040400 0
028 G010400 5688
028 G020400 17

028 G030400 0
028 G040400 0
028 H000400 0
029 00AA00 N
030 A00AA00 0
030 B00AA00 0.00
030 C00AA00 0.00
031 A00AA00 0
031 B00AA00 0
032 00AA00 0
033 00AA00 0
034 00AA00 N
035 00AA00 0
036 B00AA00 0
037 00AA00 N
038 00AA00 0
039 00AA00 Y
040 00AA00 N
042 A000400 0
042 B000400 0
042 C000400 100
042 D000400 0
042 E000400 0
042 F000400 0
042 G000400 0
042 H000400 0
043 000400 0
044 000400 0
045 000400 Y
046 000400 N
047 000400 Y
048 000400 0.000
048 A010400 1000000
048 A020400 0.150
048 B010400 3000000
048 B020400 0.133
048 C010400 0
048 C020400 0.000
048 D010400 0
048 D020400 0.000
048 E010400 0
048 E020400 0.000
048 F010400 0
048 F020400 0.000
048 G010400 0
048 G020400 0.000
048 H010400 0
048 H020400 0.000
048 I010400 0
048 I020400 0.000
048 J010400 0

048 J020400 0.000
048 K010400 4000000
048 K020400 0.120
049 000400 N
050 000400 N
051 000400 N
052 000400 N
053 A000400 Y
053 B000400 Y
053 C000400 N
054 A00AA00 Y
054 B00AA00 Y
054 C00AA00 Y
054 D00AA00 N
054 E00AA00 N
054 F00AA00 N
054 G00AA00 N
054 H00AA00 Y
054 I00AA00 N
054 J00AA00 Y
054 K00AA00 N
054 L00AA00 N
054 M00AA00 Y
054 N00AA00 N
054 O00AA00 Y
055 A000400 N
055 B000400 N
056 000400 Y
057 000400 N
058 A000400 N
059 000400 Y
060 A000400 Y
060 B000400 Y
061 000400 1000000
062 A000400 Y
062 B000400 8.4
062 C000400 0.0
062 D000400 7.3
062 E000400 14.5
062 F000400 19.3
062 G000400 0.0
062 H000400 0.0
062 I000400 45.7
062 J000400 0.0
062 K000400 0.0
062 L000400 4.8
062 M000400 0.0
062 N000400 0.0
062 O000400 0.0
062 P000400 0.0
062 Q000400 0.0

062 R000400 0.0
063 A000400 38
063 B000400 0.0
064 A000400 Y
064 B000400 N
066 A000400 N
067 000400 N
068 A000400 N
068 B000400 N
069 000400 N
070 A010400 Y
070 A020400 Y
070 B010400 N
070 B020400 N
070 C010400 N
070 C020400 N
070 D010400 N
070 D020400 N
070 E010400 N
070 E020400 N
070 F010400 N
070 F020400 N
070 G010400 N
070 G020400 N
070 H010400 N
070 H020400 N
070 I010400 N
070 I020400 N
070 J010400 Y
070 J020400 Y
070 K010400 Y
070 K020400 Y
070 L010400 Y
070 L020400 Y
070 M010400 N
070 M020400 N
070 N010400 N
070 N020400 N
070 O010400 Y
070 O020400 N
070 P010400 Y
070 P020400 N
070 Q010400 N
070 Q020400 N
070 R010400 Y
070 R020400 N
071 A000400 0
071 B000400 0
071 C000400 0
071 D000400 0
072 A000400 12

072 B000400 36
072 C000400 0
072 D000400 0
072 E000400 0
072 F000400 23
072 G000400 15
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072 I000400 100
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072 L000400 14
072 M000400 2
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072 R000400 32
072 S000400 12
072 T000400 0
072 U000400 29
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072 W000400 19
072 X000400 246
072 Y000400 246
072 Z000400 36
072AA000400 0
072BB000400 0
072CC010400 0
072CC020400 0
072DD010400 36
072DD020400 0
072EE000400 0
073 A010400 0.0250
073 A020400 0.0000
073 B000400 0.0000
073 C000400 0.0000
074 A000400 0
074 B000400 1153
074 C000400 14589
074 D000400 0
074 E000400 0
074 F000400 0
074 G000400 0
074 H000400 0
074 I000400 0
074 J000400 25
074 K000400 6
074 L000400 5
074 M000400 0
074 N000400 15778
074 O000400 0

074 P000400 5
074 Q000400 0
074 R010400 0
074 R020400 0
074 R030400 0
074 R040400 34
074 S000400 0
074 T000400 15739
074 U010400 1574
074 U020400 0
074 V010400 10.00
074 V020400 0.00
074 W000400 10.0010
074 X000400 3
074 Y000400 0
075 A000400 15030
075 B000400 0
076 000400 0.00
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 N
077 Q020000 N
077 Q030000 N
078 000000 N
080 A00AA00 ICI MUTUAL INSURANCE COMPANY
080 C00AA00 60000
081 A00AA00 Y
081 B00AA00 114
082 A00AA00 Y
082 B00AA00 100
083 A00AA00 N
083 B00AA00 0
084 A00AA00 N
084 B00AA00 0
085 A00AA00 Y
085 B00AA00 N
086 A010000 0

086 A020000 0
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
SIGNATURE PAUL SCHUBERT
TITLE TREASURER