Deutsche Asset Management [LOGO]
                                             A Member of the Deutsche Bank Group







Chief Executive Officer
Section 906 Certification under Sarbanes Oxley Act






I, Julian Sluyters, certify that:

1.   I have reviewed this report, filed on behalf of Scudder U.S. Bond Index
     Portfolio, a series of Scudder Investment Portfolios, on Form N-CSR of the
     Scudder U.S. Bond Index Portfolio (the "Company");

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.




February 28, 2005                           /s/Julian Sluyters
                                            Julian Sluyters
                                            Chief Executive Officer
                                            Scudder U.S. Bond Index
                                            Portfolio, a series of Scudder
                                            Investment Portfolios





                                                Deutsche Asset Management [LOGO]
                                             A Member of the Deutsche Bank Group








Chief Financial Officer
Section 906 Certification under Sarbanes Oxley Act






I, Paul Schubert, certify that:

1.   I have reviewed this report, filed on behalf of Scudder U.S. Bond Index
     Portfolio, a series of Scudder Investment Portfolios, on Form N-CSR of the
     Scudder U.S. Bond Index Portfolio (the "Company");

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.




February 28, 2005                                /s/Paul Schubert
                                                 Paul Schubert
                                                 Chief Financial Officer
                                                 Scudder U.S. Bond Index
                                                 Portfolio, a series of Scudder
                                                 Investment Portfolios