For provisions relating to credits and refunds of certain taxes on sales and services see section 6416 of the Code and §§ 53.171-53.186. For regulations under section 6402 of the Code of general application in respect of credits or refunds, see 27 CFR 70.122 , 70.123 , and 70.124 (Procedure and Administration).
27 C.F.R. § 53.161