This brief but important letter notifies a customer that he or she has overpaid you. It can serve as a very good customer relations letter.Our document template is designed to make the process of writing an "Inform a Customer of an Overpayment" letter quick, easy, and stress-free. We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error. The salary overpayment resulted because . Our service provides various examples of refund letters, including sample overpayment letters, refund request letters, and more. Revenue and Recovery participates in the State and Federal Tax Refund Intercept Programs.