MAS, which is the subject of a TSC sub-committee inquiry, has cut the number of full-time equivalent permanent staff from 150 in November 2011 to 66 in March and employs an additional 27 staff on an interim basis.
In its 2011/12 budget, the MAS revealed £4m redundancy costs, dropping to £250,000 for 2012/13.
Conservative MP Jesse Norman said: “Do you think there is something slightly odd about a service that is two years old having redundancy costs of £4m last year?”
The MAS was set up in April 2011 and all employees came from the Consumer Financial Education Body which was part of the FSA.
Redundancy payouts to MAS staff have been based on FSA redundancy policy, which awards staff who have been with the regulator for over six months and less than two years a sum equivalent to 13 weeks of basic salary.
MAS chief executive Caroline Rookes said: “The redundancy programme is complete. Most of the redundancies either took place or were agreed in the previous year.
“It was the nature of the service. I was not there but it was set up by taking an arm of the FSA. MAS has been through an enormous transformation programme to create the organisation we need and to deliver service and leadership to the sector.”