You will need your remittance ID in order to repay your Social Security overpayment on Pay.gov. Go to your local SSA Office and ask for a payment plan to pay back your overpayment.Offer a monthly payment amount that you are sure you can afford. If you have an overpayment debt, you may be eligible to make a full or partial payment using Pay. Gov or your bank's online bill pay option. Your full name and Social Security number should be entered on the check or money order. If the debtor is financially unable to refund the overpayment in one lump sum, regular installment payments may be acceptable. Certified checks or money orders should be made to "PA UC Fund.