If, within 60 days of the date of the notice described in § 404.521 , the overpaid individual notifies us that he or she is exercising a right described in § 404.522(a) and submits evidence pursuant to § 404.522(b) or requests a waiver under § 404.506 , we will suspend any notice to the Department of the Treasury until we have issued written findings that affirm that an overpayment is past due and legally enforceable and, if applicable, make a determination that a waiver request cannot be granted.
20 C.F.R. §404.525