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






Chief Executive Officer
Form N-CSR 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;

2.            Based on my knowledge, this report does not contain any untrue
              statement of a material fact or omit to state a material fact
              necessary to make the statements made, in light of the
              circumstances under which such statements were made, not
              misleading with respect to the period covered by this report;

3.            Based on my knowledge, the financial statements, and other
              financial information included in this report, fairly present in
              all material respects the financial condition, results of
              operations, changes in net assets, and cash flows (if the
              financial statements are required to include a statement of cash
              flows) of the registrant as of, and for, the periods presented in
              this report;

4.            The registrant's other certifying officer(s) and I are responsible
              for establishing and maintaining disclosure controls and
              procedures (as defined in Rule 30a-3(c) under the Investment
              Company Act of 1940) and internal control over financial reporting
              (as defined in Rule 30a-3(d) under the Investment Company Act of
              1940) for the registrant and have:

                  (a)   Designed such disclosure controls and procedures, or
                        caused such disclosure controls and procedures to be
                        designed under our supervision, to ensure that material
                        information relating to the registrant, including its
                        consolidated subsidiaries, is made known to us by others
                        within those entities, particularly during the period in
                        which this report is being prepared;

                  (b)   Designed such internal control over financial reporting,
                        or caused such internal control over financial reporting
                        to be designed under our supervision, to provide
                        reasonable assurance regarding the reliability of
                        financial reporting



                        and the preparation of financial statements for external
                        purposes in accordance with generally accepted
                        accounting principles;

                  (c)   Evaluated the effectiveness of the registrant's
                        disclosure controls and procedures and presented in this
                        report our conclusions about the effectiveness of the
                        disclosure controls and procedures, as of a date within
                        90 days prior to the filing date of this report based on
                        such evaluation; and

                  (d)   Disclosed in this report any change in the registrant's
                        internal control over financial reporting that occurred
                        during the registrant's most recent fiscal half-year
                        (the registrant's second fiscal half-year in the case of
                        an annual report) that has materially affected, or is
                        reasonably likely to materially affect, the registrant's
                        internal control over financial reporting; and

5.            The registrant's other certifying officer(s) and I have disclosed
              to the registrant's auditors and the audit committee of the
              registrant's board of directors (or persons performing the
              equivalent functions):

                  (a)   All significant deficiencies and material weaknesses in
                        the design or operation of internal control over
                        financial reporting which are reasonably likely to
                        adversely affect the registrant's ability to record,
                        process, summarize, and report financial information;
                        and

                  (b)   Any fraud, whether or not material, that involves
                        management or other employees who have a significant
                        role in the registrant's internal control over financial
                        reporting.

August 23, 2004                                   /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
Form N-CSR Certification under Sarbanes Oxley Act






I, Charles A. Rizzo, 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;

2.            Based on my knowledge, this report does not contain any untrue
              statement of a material fact or omit to state a material fact
              necessary to make the statements made, in light of the
              circumstances under which such statements were made, not
              misleading with respect to the period covered by this report;

3.            Based on my knowledge, the financial statements, and other
              financial information included in this report, fairly present in
              all material respects the financial condition, results of
              operations, changes in net assets, and cash flows (if the
              financial statements are required to include a statement of cash
              flows) of the registrant as of, and for, the periods presented in
              this report;

4.            The registrant's other certifying officer(s) and I are responsible
              for establishing and maintaining disclosure controls and
              procedures (as defined in Rule 30a-3(c) under the Investment
              Company Act of 1940) and internal control over financial reporting
              (as defined in Rule 30a-3(d) under the Investment Company Act of
              1940) for the registrant and have:

                  (a)   Designed such disclosure controls and procedures, or
                        caused such disclosure controls and procedures to be
                        designed under our supervision, to ensure that material
                        information relating to the registrant, including its
                        consolidated subsidiaries, is made known to us by others
                        within those entities, particularly during the period in
                        which this report is being prepared;

                  (b)   Designed such internal control over financial reporting,
                        or caused such internal control over financial reporting
                        to be designed under our supervision, to provide
                        reasonable assurance regarding the reliability of
                        financial reporting



                        and the preparation of financial statements for external
                        purposes in accordance with generally accepted
                        accounting principles;

                  (c)   Evaluated the effectiveness of the registrant's
                        disclosure controls and procedures and presented in this
                        report our conclusions about the effectiveness of the
                        disclosure controls and procedures, as of a date within
                        90 days prior to the filing date of this report based on
                        such evaluation; and

                  (d)   Disclosed in this report any change in the registrant's
                        internal control over financial reporting that occurred
                        during the registrant's most recent fiscal half-year
                        (the registrant's second fiscal half-year in the case of
                        an annual report) that has materially affected, or is
                        reasonably likely to materially affect, the registrant's
                        internal control over financial reporting; and

5.            The registrant's other certifying officer(s) and I have disclosed
              to the registrant's auditors and the audit committee of the
              registrant's board of directors (or persons performing the
              equivalent functions):

                  (a)   All significant deficiencies and material weaknesses in
                        the design or operation of internal control over
                        financial reporting which are reasonably likely to
                        adversely affect the registrant's ability to record,
                        process, summarize, and report financial information;
                        and

                  (b)   Any fraud, whether or not material, that involves
                        management or other employees who have a significant
                        role in the registrant's internal control over financial
                        reporting.

August 23, 2004                                  /s/Charles A. Rizzo
                                                 Charles A. Rizzo
                                                 Chief Financial Officer
                                                 Scudder U.S. Bond Index
                                                 Portfolio,
                                                 a series of Scudder Investment
                                                 Portfolios