Form IT -550 may be used to request a refund of withholding, corporate, partnership and individual income taxes. This page explains how to request a sales tax refund via the Georgia Tax Center (GTC).Request a Sales Tax Refund. To amend Code Section 48-7-121 of the Official Code of Georgia Annotated, relating to. If you think you have overpaid your Property Tax bill, you can contact the Finance. Department at (912)729‐5613 to see if you are entitled to a refund. Complete all sections of Form 8962. Completing Form 1040-X.