Exhibit (b)(1)

                     CDC Nvest Tax Exempt Money Market Trust
                            Exhibit to SEC Form N-CSR
                           Section 302 Certifications

I, John T. Hailer, certify that:

1.     I have reviewed this report on Form N-CSR of CDC Nvest Tax Exempt Money
       Market Trust;

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; and

3.     Based on my knowledge, the financial statements, and other financial
       information included in this report, fairly present in all materials
       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 officers and I are responsible for
       establishing and maintaining disclosure controls and procedures (as
       defined in Rule 30a-2(c) under the Investment Company Act of 1940) for
       the registrant and have:

       a.     Designed such disclosure controls and procedures to ensure that
              material information relating to the registrant, including its
              consolidated subsidiaries, is made know to us by others within
              those entities, particularly during the period in which this
              report is being prepared;
       b.     Evaluated the effectiveness of the registrant's disclosure
              controls and procedures as of a date within 90 days prior to the
              filing of this report (the "Evaluation Date"); and
       c.     Presented in this report our conclusions about the effectiveness
              of the disclosure controls and procedures based on our evaluation
              as of the Evaluation Date;

5.     The registrant's other certifying officers and I have disclosed, based on
       our most recent evaluation, 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 in the design or operation of
              internal controls which could adversely affect the registrant's
              ability to record, process, summarize and report financial data
              and have identified for the registrant's auditors any material
              weaknesses in internal controls; and
       b.     Any fraud, whether or not material, that involves management or
              other employees who have a significant role in the registrant's
              internal controls; and

6.     The registrant's other certifying officers and I have indicated in this
       report whether or not there were significant changes in internal controls
       or in other factors that could significantly affect internal controls
       subsequent to the date of our most recent evaluation, including any
       corrective actions with regard to the significant deficiencies and
       material weaknesses.

Date:  August 28, 2003

                               /s/ John T. Hailer
                           ---------------------------
                                 John T. Hailer
                       President & Chief Executive Officer




                     CDC Nvest Tax Exempt Money Market Trust
                            Exhibit to SEC Form N-CSR
                           Section 302 Certifications

I, Nicholas H. Palmerino, certify that:

1.     I have reviewed this report on Form N-CSR of CDC Nvest Tax Exempt Money
       Market Trust;

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; and

3.     Based on my knowledge, the financial statements, and other financial
       information included in this report, fairly present in all materials
       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 officers and I are responsible for
       establishing and maintaining disclosure controls and procedures (as
       defined in Rule 30a-2(c) under the Investment Company Act of 1940) for
       the registrant and have:

       a.     Designed such disclosure controls and procedures to ensure that
              material information relating to the registrant, including its
              consolidated subsidiaries, is made know to us by others within
              those entities, particularly during the period in which this
              report is being prepared;
       b.     Evaluated the effectiveness of the registrant's disclosure
              controls and procedures as of a date within 90 days prior to the
              filing of this report (the "Evaluation Date"); and
       c.     Presented in this report our conclusions about the effectiveness
              of the disclosure controls and procedures based on our evaluation
              as of the Evaluation Date;

5.     The registrant's other certifying officers and I have disclosed, based on
       our most recent evaluation, 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 in the design or operation of
              internal controls which could adversely affect the registrant's
              ability to record, process, summarize and report financial data
              and have identified for the registrant's auditors any material
              weaknesses in internal controls; and
       b.     Any fraud, whether or not material, that involves management or
              other employees who have a significant role in the registrant's
              internal controls; and

6.     The registrant's other certifying officers and I have indicated in this
       report whether or not there were significant changes in internal controls
       or in other factors that could significantly affect internal controls
       subsequent to the date of our most recent evaluation, including any
       corrective actions with regard to the significant deficiencies and
       material weaknesses.

Date:  August 28, 2003

                            /s/ Nicholas H. Palmerino
                           ---------------------------
                              Nicholas H. Palmerino
                                    Treasurer