Deutsche Asset Management [LOGO] A Member of the Deutsche Bank Group President Section 906 Certification under Sarbanes Oxley Act I, Vincent J. Esposito, certify that: 1. I have reviewed this report, filed on behalf of Investors Municipal Cash Fund, on Form N-CSR; 2. Based on my knowledge and pursuant to 18 U.S.C. ss. 1350, the periodic report on Form N-CSR (the "Report") fully complies with the requirements of ss. 13 (a) or ss.15 (d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. December 2, 2005 /s/Vincent J. Esposito ---------------------- Vincent J. Esposito President Investors Municipal Cash Fund Deutsche Asset Management [LOGO] A Member of the Deutsche Bank Group Chief Financial Officer and Treasurer Section 906 Certification under Sarbanes Oxley Act I, Paul Schubert, certify that: 1. I have reviewed this report, filed on behalf of Investors Municipal Cash Fund, on Form N-CSR; 2. Based on my knowledge and pursuant to 18 U.S.C. ss. 1350, the periodic report on Form N-CSR (the "Report") fully complies with the requirements of ss. 13 (a) or ss. 15 (d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. December 2, 2005 /s/Paul Schubert ---------------------- Paul Schubert Chief Financial Officer and Treasurer Investors Municipal Cash Fund