Oklahoma Administrative Code
Title 710 - Oklahoma Tax Commission
Chapter 65 - Sales and Use Tax
Subchapter 19 - Specific Applications and Examples
Part 9 - "E"
Section 710:65-19-89 - Exchange or return of merchandise

(a) Returns of merchandise. In the event merchandise purchased from a vendor, upon the sale of which tax has been charged, is returned to the vendor in exchange for another item the vendor may, provided he allows the customer the full purchase price of the item returned plus the tax thereon, either by credit or refund, record the net difference between the selling price of the item returned and the item delivered to the customer in the exchange as an addition to or deduction from gross sales, whichever is appropriate, on his report for the current month.

(b) Restocking charge. In the event a customer returns a taxable item for credit or refund and the seller charges the customer a restocking fee, the sales tax refunded to the customer is on the net amount of the refund after any charge for the restocking fee.