For now I'm going to fill out the waiver of over payments letter and send it back but I'm still not sure what to do and what will happen? Overpayment refunds of vehicle and business tangible property taxes will be sent within 2 to 4 weeks from the date of the payment or exoneration.File Form SSA-632, Request for Waiver of Overpayment Recovery. On Question 2, check the first box. Also write on the form: "I want all overpayments on my record to be waived, even the amounts you have already collected." You may fill out the application form in private if you desire. Introduction. The Department of Information Technology (Document Management) develops and implements the Fairfax County Public Schools (FCPS) Records. Please call 1-800-772-1772 or your local field office and we may be able to process your waiver request quickly over the phone.