The First Sale Rule: What It Actually Takes to Lower Your US Dutiable Value

A CFO looks at a duty line that has roughly doubled in eighteen months and asks the obvious question: is the number we are paying duty on the right number? The product has not changed. The supplier has not changed. The rate did. And somewhere in the chain between the factory that made the goods and the entry that declared them, there is a second price, lower than the one on the commercial invoice, that a trading company paid before anyone in the United States was involved.

That earlier price can be the dutiable value. Not always, not by election, and never without a file. But it can be, and in a high-rate environment the difference between the two prices, multiplied by the rate, is the entire question.

This is what the First Sale rule is, what the standard actually requires, and what a program has to contain before it survives contact with US Customs and Border Protection.

When it is even on the table

First Sale applies to multi-tiered transactions. A foreign manufacturer sells to a foreign middleman, a trading company or a related sourcing entity, and that middleman sells to the US importer. Two sales, two prices, one shipment, and the goods frequently ship directly from the factory to the United States without the middleman ever touching them.

If your supply chain has one sale in it, factory to US importer, there is no earlier price and nothing to discuss. If it has two or more, the question becomes which sale the valuation statute means.

The statute is 19 U.S.C. § 1401a(b)(1), Section 402 of the Tariff Act of 1930 as amended by the Trade Agreements Act of 1979. It defines transaction value as the price actually paid or payable for the merchandise "when sold for exportation to the United States." The phrase does not say which sale. In Nissho Iwai American Corp. v. United States, 982 F.2d 505 (Fed. Cir. 1992), the Court of Appeals for the Federal Circuit held that in a three-tiered distribution system the manufacturer's price constitutes a viable transaction value when the goods are clearly destined for export to the United States and when the manufacturer and the middleman deal with each other at arm's length, in the absence of any non-market influences that affect the legitimacy of the sale price.

That holding is the whole basis. Appraisement itself is governed by 19 CFR Part 152, with transaction value at § 152.103.

The presumption you are rebutting

Here is the framing most treatments of this topic skip, and it changes how the entire program should be built.

First Sale is not a valuation method you select. Under Treasury Decision 96-87, CBP presumes that the price paid by the importer is the appropriate basis for determining transaction value, and the burden is on the importer to rebut that presumption.

So the exercise is evidentiary, not elective. You are not filling in a different box. You are asserting, and standing ready to prove, that a sale you were not party to satisfies a legal standard, and that the price from that sale is the correct one under the statute.

On paper, First Sale looks like arithmetic: you already know both prices, you declare the lower one, the duty falls. In practice it is a documentation program with a compliance obligation attached, running continuously for as long as you use it, on transactions between two foreign parties whose records you do not control. That gap between how simple the arithmetic looks and how demanding the evidence is explains why the rule is legal, decades old, well understood, and still under-used.

The three-part test, and what each part means in documents

A bona fide sale. Before anything else, the earlier transaction has to be a sale: a transfer of property in exchange for consideration, with the risks and rewards of ownership actually passing from the manufacturer to the middleman. CBP looks at the totality of the circumstances and no single factor is dispositive. Physical possession supports ownership but is not required, which matters because in these structures the middleman almost never takes possession. What you need instead is evidence of a real transfer: the purchase order, the manufacturer's invoice, proof of payment, the terms of sale, and where title and risk passed.

Clearly destined for the United States. The goods must be destined for export to the US at the time of the first sale, not routed there later by a decision the middleman made after buying them. This is where documentation is most often thin. US-specific markings, labels or packaging specifications on the factory order. Purchase orders that identify the US customer or destination. Shipping documents showing continuous movement to the United States. Under § 152.103(a)(5), CBP's regulation on sale for export and placement for through shipment looks to a through bill of lading, with other satisfactory documentation accepted only where a through bill clearly would be impossible.

Arm's length, free of non-market influences. The price between manufacturer and middleman has to be the product of an ordinary commercial negotiation. If those two parties are related, the analysis does not stop, it stacks: the related-party provisions of § 152.103 apply to the first sale, including the circumstances of sale test at § 152.103(l) and the test values at § 152.103(j)(2). A related first sale is not disqualified. It is subject to a second layer of proof that an unrelated first sale never faces.

The file, and who has to maintain it

The documentation burden is the reason programs fail, and it lands in an awkward place: most of the evidence belongs to your supplier's supplier.

At minimum, a defensible file carries the manufacturer's invoice to the middleman, proof of the payment that actually moved between them, the purchase orders on both legs of the chain, the transport documents establishing destination, and the contractual terms that show where title and risk passed. Where the first sale is between related parties, add the support for arm's-length pricing under the circumstances of sale test.

Two structural points follow. First, this has to be negotiated commercially before it is implemented operationally. A middleman is being asked to disclose its purchase price to its customer, which is the same as disclosing its margin. That conversation is a procurement negotiation, not a customs task, and it is the step that most often ends the project. Second, the records have to be maintained under the ordinary US recordkeeping obligations and produced on demand, entry by entry, for as long as the program runs.

CBP also maintains a First Sale Declaration requirement, under which importers declare at the time of entry when transaction value was determined on the basis of a price paid in a sale occurring earlier than the last sale before the merchandise was introduced into the United States. The requirement originated in the Food, Conservation, and Energy Act of 2008. Confirm current filing mechanics with your customs broker before your first entry rather than after.

The math, and where it stops scaling

The saving is the price gap multiplied by the applicable rate, which is why interest in First Sale rises with tariffs. On an ad valorem duty applied to entered value, including Section 301 duties, the arithmetic is direct: lower the value, lower every ad valorem charge computed on it, and the benefit grows in proportion to the rate.

It does not scale uniformly across every trade measure, and this is where enthusiasm outruns the math. Section 232 duties on steel and aluminum derivative articles are assessed on the value of the metal content rather than on the full entered value of the article, with the non-metal portion treated separately. Lowering the entered value through First Sale does not reduce a duty that was never calculated on the entered value in the first place. If your exposure is concentrated in derivative articles, model the specific duty structure before assuming a percentage saving.

So the honest way to size this is per program, not per company. Take your highest-value multi-tiered flows, apply the actual duty structure on those specific goods, and compare the modeled annual saving against the cost of building and maintaining the file. On some flows the answer is obviously yes. On others the compliance cost consumes the benefit, and the right decision is not to run the program on those lines.

The limits, and what happens if CBP disagrees

First Sale is not available when there is no genuine earlier sale, when the goods were not destined for the United States when that sale occurred, when the pricing cannot be shown to be arm's length, or when the documentation to prove any of the above does not exist and cannot be obtained. None of those are technicalities. Each is the standard itself.

If CBP disagrees, the regulation sets the path. Under § 152.103(m), when CBP has grounds for rejecting the transaction value declared by an importer and that rejection increases duty liability, the Center director informs the importer of the grounds for the rejection, and the importer is afforded 20 days to respond in writing. That is a short window, and it is the moment the file either exists or it does not. A program that assembles its documentation when the notice arrives has already lost the argument it was built to win.

In our work on the US side of the corridor, the pattern is consistent: the programs that hold up are not the ones with the most sophisticated structure. They are the ones where the evidence was collected at the time of each transaction, as part of the ordinary flow, rather than reconstructed later from parties with no obligation to help.

The bill that would end it

Any importer considering this now should know that the statutory basis is the subject of pending legislation.

On February 11, 2026, Senators Bill Cassidy and Sheldon Whitehouse introduced the Last Sale Valuation Act (S.3841, 119th Congress), which would amend the Tariff Act of 1930 to require that transaction value be determined on the basis of the last sale of the merchandise occurring before exportation to the United States. If enacted, First Sale would no longer be available.

As of this writing the bill has been introduced and has no scheduled congressional consideration. It is also not the first attempt: in 2008 CBP proposed by rulemaking to require the last sale as the basis of transaction value, and that proposal did not take effect.

Two things follow, and neither is a prediction. Model the program on a payback horizon you can defend rather than assuming indefinite availability, because a program that only breaks even over five years is a different decision than one that pays for itself in twelve months. And build the documentation to a standard that holds regardless, since the records that prove a bona fide sale, a destination and an arm's-length price are the same records that answer a related-party inquiry, a value verification, or a post-entry review under any valuation basis.

A lower dutiable value is available to importers whose supply chains genuinely contain an earlier qualifying sale and who can prove it, entry by entry. It is not available to importers who merely have two invoices. The distance between those two positions is the file.

Talk to a Joffroy expert about a First Sale feasibility assessment on your multi-tiered flows: whether the structure qualifies, what the documentation would require, and what the modeled saving is against your actual duty exposure.

TRADE. UNDER CONTROL.