19 C.F.R. § 190.22
(a)
(ii) Allowable refund - (A) Exportation. In the case of an article that is exported, the amount of drawback allowable will not exceed 99 percent of the lesser of:
(1) The amount of duties, taxes, and fees paid with respect to the imported merchandise; or
(2) The amount of duties, taxes, and fees that would apply to the substituted merchandise if the substituted merchandise were imported.
(B) Destruction. In the case of an article that is destroyed, the amount of drawback allowable will not exceed 99 percent of the lesser of:
(1) The amount of duties, taxes, and fees paid with respect to the imported merchandise (after the value of the imported merchandise has been reduced by the value of materials recovered during destruction as provided in 19 U.S.C. 1313(x)); or
(2) The amount of duties, taxes, and fees that would apply to the substituted merchandise if the substituted merchandise were imported (after the value of the imported merchandise has been reduced by the value of materials recovered during destruction as provided in 19 U.S.C. 1313(x)).
(2) Drawback successor. A “drawback successor” is a manufacturer or producer to whom another entity (predecessor) has transferred, by written agreement, merger, or corporate resolution:
(3) Recordkeeping. Records must be maintained showing the relative value of each product at the time of separation.
Effective Date Note:The effective date for amendments regarding the drawback of excise taxes in (a)(1)(ii)(C) is Feb. 19, 2019.