Sec.  1.1932   Refunds.

   (a) Refunds shall promptly be made when—(1) A debt is waived or otherwise
   found not owing to the United States (unless expressly prohibited by statute
   or regulation); or

   (2)  The  employee's paying agency is directed by an administrative or
   judicial order to refund amounts deducted from his or her current pay.

   (b) Refunds do not bear interest unless required or permitted by law or
   contract.