Do not complete lines 13c through 16. Payments and Refunds.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. Enter the total amount of the check that is being remitted; this amount should match the amount due on Line 9. Remit payment as directed on the tax return. 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. Complete this form in its entirety to request a refund of a payment made to OATH. The form must be signed.