First sale valuation and your duty drawback baseline

If your goods move factory → trading company → you, first sale valuation lets you declare the factory-to-middleman price as the customs value instead of the higher price you paid the middleman. Transaction value is "the price actually paid or payable for the merchandise when sold for exportation to the United States" under 19 U.S.C. 1401a(b)(1) and 19 CFR 152.103(b), and neither the statute nor Part 152 defines that phrase (Federal Register). The Federal Circuit filled the gap in Nissho Iwai American Corp. v. United States, 982 F.2d 505 (Fed. Cir. 1992), holding that in a three-tiered transaction the manufacturer-to-middleman sale can be the basis of appraisement where it is at arm's length and the goods are clearly destined for export to the United States at the time of that sale (CBP CROSS H005222).

Because every ad valorem charge is calculated on entered value, a lower entered value lowers regular duty, Section 301, ad valorem Section 232 and the merchandise processing fee at the same time. It also shrinks your duty drawback pool proportionally — drawback refunds 99% of duties paid, and only on the units you actually export or destroy. In practice the duty you never pay is worth more than the 99% you might later recover on part of it, so first sale and drawback belong in the same plan rather than in competition.

First, a bona fide sale. The middleman has to actually buy the goods — take title, assume risk of loss, and act as an independent buyer and seller rather than as your agent. In HQ H349649, CBP confirmed first sale in a multi-tiered supply chain precisely because title and risk of loss transferred to the middleman, the parties were unrelated and priced at arm's length, and the middleman was not acting as an agent (Crane Worldwide).

Second, the goods must be clearly destined for the United States at the time of the first sale. U.S.-specific specifications, labeling, FDA or CPSC markings, purchase orders that reference the U.S. buyer, and transport documents showing direct movement all help establish this.

Third, the price must be arm's length. Where the factory and middleman are related, you have to show the relationship did not influence the price. CBP starts from the presumption that transaction value is the price paid by the importer; an importer may request appraisement on the manufacturer-to-middleman price, but must show that price is acceptable under Nissho Iwai (CBP CROSS H097035).

CBP requires sufficient evidence of a bona fide arm's-length sale for export to the United States, with supporting documentation along the lines of Treasury Decision 96-87 (January 1997): purchase orders, invoices, proof of payment, contracts and correspondence that establish how the parties deal with one another. CBP is looking for a complete paper trail showing the structure of the entire transaction, not a single supporting invoice (International Trade Today).

That means both tiers: PO and invoice from you to the middleman, PO and invoice from the middleman to the factory, bank records proving payment on both legs, the contracts governing each, and transport documents showing the goods moved directly. Keep it for the standard five-year customs recordkeeping period.

This is largely the same document universe a drawback claim needs to prove importation and duty paid, which is the quiet argument for building one records process instead of two. If your import file is already clean enough to survive a drawback audit, it is most of the way to surviving a first sale review.

First sale moves the number that every percentage-based charge is multiplied by. It does nothing to charges that are not calculated on value, and it does not let you drop dutiable additions such as assists, which still get added to the first sale price.

MPF deserves a caveat. For formal entries, MPF is 0.3464% of the value of the goods, excluding duty, freight and insurance, with an FY2026 minimum of $33.58 and a maximum of $651.50 per entry (CBP). Once an entry's value is above roughly $188,000 you are already at the cap, so the MPF benefit vanishes on large entries.

Drawback refunds up to 99% of duties paid on merchandise that is later exported or destroyed. Lower the duty you paid and you lower the ceiling on what can come back. The question is never whether the drawback pool shrinks — it does — but whether the duty saved exceeds the refund forgone.

Here is a clearly hypothetical illustration, not a benchmark: 10,000 units, a middleman price of $20 and a factory price of $15, a combined 20% ad valorem rate, and 30% of the units eventually exported and eligible for drawback.

On substitution unused merchandise claims under 19 U.S.C. 1313(j)(2), the arithmetic gets tighter. Eligible duties, taxes and fees are determined by per unit averaging as defined in 19 CFR 190.2, and total drawback for exported articles cannot exceed 99% of the lesser of the duties paid on the import or the duties that would apply to the substituted merchandise if imported (19 CFR 190.32). For substitution claims the value of the designated import is the per unit average of the entered value for that line item (19 CFR Part 190), so a lower designated value can bind the refund through the "lesser of" rule in a way it does not for direct identification claims under 1313(j)(1).

Practical consequence: if you run substitution claims, review which entries you designate after adopting first sale. Designating your lowest-value entries against high-duty substituted merchandise can cost you refund dollars that better designation would keep.

First sale saves duty on every unit you import, including the ones you sell domestically — where drawback does nothing at all. Drawback recovers 99% on the exported or destroyed share only. For most consumer brands, domestic sales are the large majority of volume, which is why the entry-side saving usually dominates.

First sale is also the only lever available against duties that carry a no-drawback clause. CBP states in CSMS 18-000317 that no drawback is available with respect to Section 232 duties imposed on aluminum or steel articles (CBP Section 232 FAQs). Where a duty can never be refunded, reducing the value it is assessed on is the whole game.

And on the recovery side, separate refund tracks — IEEPA-era duties among them, where a CIT order as of March 2026 directed CBP to stop assessing and reprocess certain entries — run on their own clock. We track that separately in our IEEPA coverage.

Assume review. CBP has issued First Sale Valuation Questionnaires to numerous importers covering 2023–2025 entries, requiring disclosure of whether first sale was used, with responses due within 30 days, no extensions, across all entries in that period and all manufacturer IDs (Geodis). A program you cannot document in 30 days is a program you cannot defend.

Start with tier one. Pull the Incoterms and contracts between factory and trading company and confirm title and risk of loss genuinely pass to the middleman, then confirm you can produce proof of payment on both legs. If the structure is unusual, a prospective ruling request is worth considering.

Monitor the legislative risk without pricing it in. On February 11, 2026, Senators Cassidy and Whitehouse introduced the Last Sale Valuation Act (S.3841), which would amend the Tariff Act of 1930 to require duties be calculated on the last sale before exportation. As of a February 20, 2026 client alert it had no scheduled congressional consideration, and commentary called it too early to predict passage (Perkins Coie).

Then re-run the recovery side against your new entered values — designation choices, per unit averaging and export ratios all shift. If you want a rough sense of what is still recoverable after a valuation change, our refund estimator is a starting point.