Reviewed by Sasha Božič, Licensed Customs Broker

Substitution drawback lets an importer recover up to 99% of the duty paid on imported goods when it exports or destroys goods of the same kind, even if they are not the exact units it imported. For unused merchandise it is authorized by 19 U.S.C. 1313(j)(2). It is the reason distributors, brands and e-commerce sellers with mixed inventory can claim drawback at all.
Unused merchandise drawback, 19 U.S.C. 1313(j), covers imported goods that leave the United States, or are destroyed under CBP supervision, without being used here. It comes in two forms.
Incidental operations such as testing, cleaning, repacking and inspection are allowed. They do not count as use.
Before TFTEA took effect in February 2018, substitution required goods to be "commercially interchangeable," which was a judgment call. The tariff classification test made substitution predictable, and it is why most high-volume unused merchandise claims today are substitution claims.
The match itself is an optimization problem. Pairing each export with the import that carries the most eligible duty, within the lesser-of rule, can change the size of a claim considerably.
Do I need to track the exact units I exported? No, not for substitution. You need the HTS match and records that tie each export to an eligible import.
Can I claim drawback on e-commerce orders shipped abroad? Yes, when the export is documented. Carrier records can serve as proof for small parcels.
Can I use substitution if someone else imported the goods? Yes, with transfer records under 19 CFR 190.10 and the right waivers in the supply chain.
Caspian pulls your ACE import history and your order and shipping data, builds the HTS bridge, and matches every export to the eligible import with the most recoverable duty. Our licensed brokers file the claim and track the refund. See our duty drawback services or the full duty drawback guide.
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