Clearly state the decision regarding the refund. We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error.This form is for general instructions that apply to all corporation tax forms. It includes a variety of topics about how to fill out your form. Defendants must submit a letter of request along with a refund form to receive a refund for payments made to the Central Violations Bureau. 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. In this article, we'll show you how to write a refund request letter template that not only grabs attention but also persuades companies to act in your favor.