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 Cash
                  Management Portfolio, 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 31, 2005                                /s/Julian Sluyters
                                               Julian Sluyters
                                               Chief Executive Officer
                                               Scudder Cash Management Portfolio



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



Chief Financial Officer
Form N-CSR Certification under Sarbanes Oxley Act






I, Paul Schubert, certify that:

1.                I have reviewed this report, filed on behalf of Scudder Cash
                  Management Portfolio, 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 31, 2005                                /s/Paul Schubert
                                               Paul Schubert
                                               Chief Financial Officer
                                               Scudder Cash Management Portfolio