27 C.F.R. § 53.177
In the case of any payment of tax under chapter 32 of the Code that is determined to be an overpayment by reason of certain exportations, uses, sales, or resales described in section 6416(b)(2) of the Code and § 53.178, the person who paid the tax may file a claim for refund of the overpayment or, in the case of overpayments under chapter 32 of the Code, may claim credit for the overpayment on any return of tax under this subpart which the person subsequently files. However, under the circumstances described in section 6416(c) of the Code and §53.184, the overpayments under chapter 32 may be refunded to an exporter or shipper. No interest shall be paid on any credit or refund allowed under this section. For provisions relating to the evidence required in support of a claim for credit or refund under this section, see 27 CFR 70.123 (Procedure and Administration) and 53.179. For provisions authorizing the taking of a credit in lieu of filing a claim for refund, see section 6416(d) of the Code and §53.185.
27 C.F.R. § 53.177