To manually report an overpayment claim or to report an offset due to a restored benefit on a case with an existing claim. We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error.In order for an overpayment refund to be processed in a timely manner, please submit a completed form with all refund checks and supporting documentation. The Tax Office holds unclaimed property tax overpayments made within the last three years and outstanding (uncashed) refund checks. There are instances where you as the child custody paying parent may send a child support payment that exceeds the court ordered amount. When claims are adjusted due to an overpayment, a Solicited Demand letter will be issued to you.