EXHIBIT 12(B)

I, Elizabeth M. Forget, President and I, Peter Duffy, Chief Financial Officer
and Treasurer of the Managed Assets Trust (the "Trust"), each certify that:

1. This Form N-CSR filing for the Trust (the "Report") fully complies with the
requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934;
and

2. The information contained in the Report fairly presents, in all material
respects, the financial condition and results of operations of the Trust.

By:   /s/ Elizabeth M. Forget
      ------------------------
      Elizabeth M. Forget
      President

By:   /s/ Peter Duffy
      ------------------------
      Peter Duffy
      Chief Financial Officer
      and Treasurer

Date: February 24, 2006