ICTXX Investors Cash Trust (MM)

000 B000000 08/31/2013
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 2122503220
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 Bank Sal. Oppenheim jr. & Cie. (Schweiz) AG
014 B00AA02 8-000000
014 A00AA03 BHF-BANK Aktiengesellschaft
014 B00AA03 8-00000
014 A00AA04 BT Opera Trading SA
014 B00AA04 8-000000
014 A00AA05 Craigs Investment Partners Limited
014 B00AA05 8-000000
014 A00AA06 DB EQUITY LIMITED
014 B00AA06 8-0
014 A00AA07 DB International (Asia) Limited
014 B00AA07 8-000000
014 A00AA08 DB SECURITIES S.A.
014 B00AA08 8-000000
014 A00AA09 DB STRATEGIC ADVISORS, INC.
014 B00AA09 8-000000
014 A00AA10 Deutsche Bank Aktiengesellschaft, Athen
014 B00AA10 8-000000
014 A00AA11 Deutsche Bank Aktiengesellschaft, Auckland
014 B00AA11 8-000000
014 A00AA12 Deutsche Bank Aktiengesellschaft, Bangalore
014 B00AA12 8-000000
014 A00AA13 Deutsche Bank Aktiengesellschaft, Chennai
014 B00AA13 8-000000
014 A00AA14 Deutsche Bank Aktiengesellschaft, Colombo
014 B00AA14 8-000000
014 A00AA15 Deutsche Bank Aktiengesellschaft, Helsinki
014 B00AA15 8-000000
014 A00AA16 Deutsche Bank Aktiengesellschaft, Kalkutta
014 B00AA16 8-000000
014 A00AA17 Deutsche Bank Aktiengesellschaft, Manila
014 B00AA17 8-000000
014 A00AA18 Deutsche Bank Aktiengesellschaft, Mumbai
014 B00AA18 8-000000
014 A00AA19 Deutsche Bank Aktiengesellschaft, New Delhi
014 B00AA19 8-000000
014 A00AA20 Deutsche Bank Aktiengesellschaft, Prag
014 B00AA20 8-000000
014 A00AA21 Deutsche Bank Aktiengesellschaft, Riad

014 B00AA21 8-000000
014 A00AA22 Deutsche Bank Aktiengesellschaft, Stockholm
014 B00AA22 8-000000
014 A00AA23 Deutsche Bank Aktiengesellschaft, Ungarn
014 B00AA23 8-000000
014 A00AA24 Deutsche Bank Aktiengesellschaft, Zurich
014 B00AA24 8-000000
014 A00AA25 DEUTSCHE BANK CORRETORA DE VALORES SA
014 B00AA25 8-0
014 A00AA26 DEUTSCHE BANK SECURITIES, INC.
014 B00AA26 8-0000
014 A00AA27 Deutsche Bank Securities Inc., 345 Park Ave
014 B00AA27 8-000000
014 A00AA28 Deutsche Bank Securities Inc., Atlanta Branch
014 B00AA28 8-000000
014 A00AA29 Deutsche Bank Securities Inc., Baltimore
014 B00AA29 8-000000
014 A00AA30 Deutsche Bank Securities Inc., Boston Branch
014 B00AA30 8-000000
014 A00AA31 Deutsche Bank Securities Inc., Chicago Branch
014 B00AA31 8-000000
014 A00AA32 Deutsche Bank Securities Inc., Costa Mesa
014 B00AA32 8-000000
014 A00AA33 Deutsche Bank Securities Inc., Dallas Branch
014 B00AA33 8-000000
014 A00AA34 Deutsche Bank Securities Inc., DoC
014 B00AA34 8-000000
014 A00AA35 Deutsche Bank Securities Inc., Greenwich
014 B00AA35 8-000000
014 A00AA36 Deutsche Bank Securities Inc., Houston Branch
014 B00AA36 8-000000
014 A00AA37 Deutsche Bank Securities Inc., Jacksonville
014 B00AA37 8-000000
014 A00AA38 Deutsche Bank Securities Inc., LA CIB
014 B00AA38 8-000000
014 A00AA39 Deutsche Bank Securities Inc., LA PWM
014 B00AA39 8-000000
014 A00AA40 Deutsche Bank Securities Inc., Memphis
014 B00AA40 8-000000
014 A00AA41 Deutsche Bank Securities Inc., Menlo Park
014 B00AA41 8-000000
014 A00AA42 Deutsche Bank Securities Inc., Miami
014 B00AA42 8-000000
014 A00AA43 Deutsche Bank Securities Inc., Palm Beach
014 B00AA43 8-000000
014 A00AA44 Deutsche Bank Securities Inc., Philadelphia
014 B00AA44 8-000000
014 A00AA45 Deutsche Bank Securities Inc., San Francisco
014 B00AA45 8-000000
014 A00AA46 Deutsche Bank Securities Inc., Winston-Salem
014 B00AA46 8-000000

014 A00AA47 DEUTSCHE BANK SECURITIES LIMITED
014 B00AA47 8-0
014 A00AA48 Deutsche Bank Societa per Azioni
014 B00AA48 8-000000
014 A00AA49 Deutsche Capital Markets Algeria SPA
014 B00AA49 8-00000
014 A00AA50 DEUTSCHE CAPITAL MARKETS AUSTRALIA LTD
014 B00AA50 8-0
014 A00AA51 Deutsche Equities India Private Limited
014 B00AA51 8-000000
014 A00AA52 Deutsche Futures Singapore Pte Ltd
014 B00AA52 8-0
014 A00AA53 Deutsche Managed Investments Limited
014 B00AA53 8-00000
014 A00AA54 Deutsche Postbank AG
014 B00AA54 8-0
014 A00AA55 Deutsche Regis Partners Inc
014 B00AA55 8-000000
014 A00AA56 Deutsche Securities (Proprietary) Limited
014 B00AA56 8-000000
014 A00AA57 DEUTSCHE SECURITIES ASIA LIMITED
014 B00AA57 8-0
014 A00AA58 Deutsche Securities Asia Limited, Singapore
014 B00AA58 8-0
014 A00AA59 Deutsche Securities Asia Limited, Taipei
014 B00AA59 8-0
014 A00AA60 Deutsche Securities Australia Limited
014 B00AA60 8-031670
014 A00AA61 DEUTSCHE SECURITIES CORREDORES DE BOLSA LTD
014 B00AA61 8-000000
014 A00AA62 Deutsche Securities Inc.
014 B00AA62 8-000000
014 A00AA63 Deutsche Securities Israel Ltd.
014 B00AA63 8-000000
014 A00AA64 DEUTSCHE SECURITIES KOREA CO.
014 B00AA64 8-0
014 A00AA65 Deutsche Securities Limited
014 B00AA65 8-0
014 A00AA66 Deutsche Securities Menkul Degerler A.S.
014 B00AA66 8-000000
014 A00AA67 DEUTSCHE SECURITIES SAUDI ARABIA LLC
014 B00AA67 8-000000
014 A00AA68 Deutsche Securities Sociedad de Bolsa S.A.
014 B00AA68 8-000000
014 A00AA69 Deutsche Securities Venezuela S.A.
014 B00AA69 8-000000
014 A00AA70 Deutsche Securities, S.A. de C.V., Bolsa
014 B00AA70 8-000000
014 A00AA71 DMG & PARTNERS SECURITIES PTE LTD
014 B00AA71 8-0
014 A00AA72 DWS INVESTMENTS DISTRIBUTORS, INC.

014 B00AA72 8-047765
014 A00AA73 DWS Investments Distributors, Inc., NJ
014 B00AA73 8-000000
014 A00AA74 DWS Investments Distributors, Inc., New York
014 B00AA74 8-000000
014 A00AA75 Habubank Securities Joint Stock Company
014 B00AA75 8-000000
014 A00AA76 HANOI BUILDING COMMERCIAL JOINT STOCK BANK
014 B00AA76 8-000000
014 A00AA77 K & N Kenanga Holdings Bhd
014 B00AA77 8-000000
014 A00AA78 Kenanga Deutsche Futures Sdn Bhd
014 B00AA78 8-000000
014 A00AA79 London Dry Bulk Limited
014 B00AA79 8-00000
014 A00AA80 OOO Deutsche Bank
014 B00AA80 8-000000
014 A00AA81 PT. Deutsche Securities Indonesia
014 B00AA81 8-000000
014 A00AA82 PT. Deutsche Verdhana Indonesia
014 B00AA82 8-000000
014 A00AA83 Public joint-stock Co "Deutsche Bank DBU"
014 B00AA83 8-00000
014 A00AA84 Sal. Oppenheim jr. & Cie. AG & Co.
014 B00AA84 8-00000
014 A00AA85 Tilney Investment Management
014 B00AA85 8-000000
014 A00AA86 Yieldbroker Pty Ltd.
014 B00AA86 8-000000
014 A00AA87 ZAO Deutsche Securities
014 B00AA87 8-00000
014 A00AA88 ZAO "UFG Invest"
014 B00AA88 8-000000
015 A00AA01 STATE STREET BANK  AND TRUST COMPANY
015 B00AA01 C
015 C01AA01 BOSTON
015 C02AA01 MA
015 C03AA01 02111
015 E01AA01 X
018  00AA00 Y
019 A00AA00 Y
019 B00AA00  102
019 C00AA00 DWSFUNDSSS
021  000000        0
022 A000001 CHASE SECURITIES INC.
022 B000001 13-3224016
022 C000001    678463
022 D000001      4675
022 A000002 CITIGROUP
022 B000002 13-3082694
022 C000002    140286

022 D000002       500
022 A000003 MORGAN STANLEY
022 B000003 13-2655998
022 C000003     62838
022 D000003         0
022 A000004 BANK OF AMERICA CORP.
022 B000004 13-4078651
022 C000004     41152
022 D000004       500
022 A000005 CREDIT SUISSE
022 B000005 05-0546650
022 C000005     38497
022 D000005         0
022 A000006 GENERAL ELECTRIC CO.
022 B000006 14-0689340
022 C000006     35259
022 D000006         0
022 A000007 BARCLAYS CAPITAL INC.
022 B000007 06-1031656
022 C000007     34635
022 D000007       400
022 A000008 UBS
022 B000008 13-2638166
022 C000008     15226
022 D000008         0
022 A000009 BANK OF NEW YORK
022 B000009 13-5160382
022 C000009     10050
022 D000009         0
022 A000010 ROYAL BANK OF CANADA
022 B000010 13-5377855
022 C000010      9771
022 D000010         0
023 C000000    1099710
023 D000000       7125
024  000400 Y
025 A000401 J P MORGAN SECURITIES INC
025 B000401 13-3224013
025 C000401 D
025 D000401    1000
025 A000402 ROYAL BANK OF CANADA
025 B000402 13-5377855
025 C000402 D
025 D000402     500
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         0
028 A030400         0
028 A040400         0
028 B010400      6000
028 B020400         8
028 B030400         0
028 B040400         0
028 C010400     30500
028 C020400         9
028 C030400         0
028 C040400      5000
028 D010400         0
028 D020400         8
028 D030400         0
028 D040400         0
028 E010400      1100
028 E020400         9
028 E030400         0
028 E040400       105
028 F010400       945
028 F020400        10
028 F030400         0
028 F040400        91
028 G010400     39545
028 G020400        44
028 G030400         0
028 G040400      5196
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   0.0
062 C000400   0.3
062 D000400   0.0
062 E000400   7.0
062 F000400  15.6
062 G000400   0.0
062 H000400   0.0
062 I000400  68.2
062 J000400   0.0
062 K000400   0.0
062 L000400   8.8
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 N
070 K010400 Y
070 K020400 N
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 Y
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       68
072 C000400        0
072 D000400        0
072 E000400        0
072 F000400       44
072 G000400       29
072 H000400        0
072 I000400      100
072 J000400        0
072 K000400        0
072 L000400       12
072 M000400        2
072 N000400        0
072 O000400        0
072 P000400        0
072 Q000400        0
072 R000400       38
072 S000400       14
072 T000400        0
072 U000400        0
072 V000400        0
072 W000400       14

072 X000400      253
072 Y000400      253
072 Z000400       68
072AA000400        0
072BB000400        0
072CC010400        0
072CC020400        0
072DD010400       68
072DD020400        0
072EE000400        0
073 A010400   0.0240
073 A020400   0.0000
073 B000400   0.0000
073 C000400   0.0000
074 A000400       51
074 B000400        0
074 C000400    54067
074 D000400        0
074 E000400        0
074 F000400        0
074 G000400        0
074 H000400        0
074 I000400        0
074 J000400        0
074 K000400       10
074 L000400       12
074 M000400        0
074 N000400    54140
074 O000400        0
074 P000400        5
074 Q000400        0
074 R010400        0
074 R020400        0
074 R030400        0
074 R040400       38
074 S000400        0
074 T000400    54097
074 U010400     5409
074 U020400        0
074 V010400    10.00
074 V020400     0.00
074 W000400  10.0010
074 X000400       10
074 Y000400        0
075 A000400    29366
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 107
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