First Sale Rule: Lower Customs Value on China Imports

By ChinaManufacturers.com Editorial Desk · Updated 30 October 2026 · How this page was researched

What the first sale rule is

The first sale rule is a US customs valuation principle that lets an importer declare the value of goods based on the earlier sale in a multi-tier chain, the sale from the manufacturer to a middleman, rather than the higher price the importer paid the middleman. It applies only when that first sale was a bona fide sale for exportation to the United States.

A sale here means a transfer of title and risk for consideration, not merely an order passed along by an agent. Exportation means that, at the moment of that first sale, the goods were already destined for the US market. Both definitions do real work: if either fails, the rule does not apply.

The legal basis is the transaction value statute, 19 U.S.C. 1401a(b), which values imports at "the price actually paid or payable for the merchandise when sold for exportation to the United States." When goods pass through more than one sale before reaching the US, each sale is a candidate. The first sale rule is the recognition that the earliest qualifying sale can be the one that counts.

The typical China structure looks like this: a factory in Guangdong sells to a trading company or affiliate in Hong Kong, and the Hong Kong company sells to the US importer. If the factory's price to Hong Kong is used, the middleman's markup drops out of the customs value.

The legal basis in case law

The leading case is Nissho Iwai American Corp. v. United States, 982 F.2d 505 (Fed. Cir. 1992). The Federal Circuit held that the manufacturer-to-middleman price may be used as transaction value if the sale was a bona fide arm's-length sale, the goods were clearly destined for export to the United States at the time of that sale, and the price was free of "distortive nonmarket influences." The Court of International Trade applied the same principle in Synergy Sport International, Ltd. v. United States, 17 CIT 18 (1993).

These citations are long-established case law, but the opinions were not retrieved for this page, so the pin cites should be confirmed before they are relied on in a filing.

CBP applies the rule through its rulings, which are searchable in the CROSS database. Its practice is also tied to a 1996 Treasury Decision, T.D. 96-87, on the meaning of "sold for exportation." The details of that decision were not re-verified for this page.

The three conditions CBP applies

CBP's rulings practice reduces the test to three conditions. The importer must show all of them.

A bona fide sale between manufacturer and middleman. Title and risk of loss passed to the middleman, and the middleman paid for the goods. If the middleman is only a buying or selling agent, no first sale exists; the price paid to the factory may still be the transaction value, but the analysis is different.
Goods clearly destined for the United States at the time of the first sale. Evidence includes US-specific labeling, US specifications or standards, and shipping documents naming a US consignee. Generic stock sold into inventory and later sold to a US buyer fails this condition.
An arm's-length price. Unrelated parties generally satisfy this. Related parties, such as a factory and its own Hong Kong sales affiliate, must show that the relationship did not influence the price, under the circumstances-of-sale or test-value methods in 19 U.S.C. 1401a(b)(2)(B).

The arm's-length condition is where related-party structures, common in China, most often need extra support. Transfer-pricing documentation and cost data are typically what an importer uses to show the price was not set by the relationship.

How it lowers the duty bill

The research uses an illustrative example, not a market price: a factory sells to its Hong Kong affiliate at $8 a unit, and the affiliate sells to the US importer at $10. If the first sale qualifies, duty is assessed on $8, plus any required additions, rather than on $10.

The saving compounds because most US import charges are ad valorem, meaning a percentage of customs value. The general (MFN) duty rate, the China Section 301 list duties, the 12.5% Section 301 forced-labor duty in effect since 24 July 2026, the Merchandise Processing Fee and the Harbor Maintenance Fee are all calculated on customs value. A lower value reduces every one of those layers at once. That is a structural consequence of the duty formulas; no official statistic on aggregate first-sale savings was found.

The first sale price is not the whole value. Under 19 U.S.C. 1401a(b)(1), the following must still be added where they apply:

packing costs;
selling commissions;
assists, such as molds or tooling the importer supplied to the factory free or at reduced cost;
royalties and license fees that are a condition of sale; and
proceeds of later resale that accrue to the seller.

The middleman's markup is excluded only if the first sale qualifies. If it does not, the middleman's price to the importer is the transaction value.

The documents a first sale claim needs

A first sale claim is only as strong as the paperwork behind the first sale, and that paperwork belongs to two parties other than the importer. Based on CBP rulings practice, the file usually includes:

the manufacturer's commercial invoice and contract to the middleman;
purchase orders showing the US destination at the time of the first sale;
proof that the middleman paid the manufacturer;
shipping documents tying the goods to the US consignee;
transfer-pricing or cost data, where the factory and middleman are related; and
often, the manufacturer's cost build-up.

The importer must declare first-sale use on the entry and be ready to produce the records if CBP issues a Form 28 request for information. Records must be kept for five years under the recordkeeping statute, 19 U.S.C. 1508. Past rulings on comparable structures can be found in CBP's CROSS rulings database by searching "first sale."

This is where most China claims fail in practice. Many Chinese factories refuse to disclose their price to the middleman's customer, because that price reveals the middleman's margin. Without the first-sale invoice and proof of payment, the claim cannot be made, however clear the structure.

The 2008 challenge and the declaration requirement

In 2008, CBP proposed to abolish the first sale rule. Congress responded in the Food, Conservation, and Energy Act of 2008 by barring any change before 1 January 2011 without consultation with Congress, and by requiring importers to declare when they use first sale; CBP withdrew the proposal. The research draws these points from established background rather than a re-read of the statute, and the section number commonly cited for the provision (§15422) was not re-verified.

No change to the statute or to the Nissho Iwai standard was identified through 30 October 2026.

First sale for goods from China

The requirements for Chinese goods are the same as for any other origin. One question is specific to China. Nissho Iwai requires a price free of "distortive nonmarket influences," and that language has been raised in discussions of first sale from China as a non-market economy. No CBP rule barring first sale from Chinese manufacturers is known, but CBP's current posture on the point was not confirmed in the research, and the analysis is fact-specific.

The tariff increases of 2025 and 2026 have raised the value of a qualifying first sale, because every additional ad valorem layer is calculated on the same lower base. No official figure on how many importers use the rule was located.

A first sale claim is valuation, not origin. It changes the value on which duty is calculated; it does not change the country of origin or the rates that apply.

Common mistakes

Treating an agent as a seller. If the middleman never took title, there is no first sale to rely on.
Lacking proof of US destination. Goods sold into general stock and later routed to the US fail the "clearly destined" condition.
Related-party pricing without support. A factory selling to its own affiliate needs transfer-pricing evidence that the price was arm's length.
Forgetting assists. Molds and tooling the importer supplied free must be added to the first-sale price.
Losing the paper trail. Records must be kept for five years and produced on request.

Because a first sale claim rests on documents from the factory and the middleman, and on legal tests applied case by case, a licensed customs broker or trade attorney should review the structure before it is declared on an entry.

Frequently asked questions

What is the first sale rule?

The first sale rule lets a US importer declare customs value using the manufacturer's price to a middleman, rather than the price the importer paid, when that earlier sale was a bona fide arm's-length sale for export to the United States. It rests on 19 U.S.C. 1401a(b) and the Federal Circuit's 1992 Nissho Iwai decision.

Can I use the first sale rule for goods from China?

Yes, in principle. The same three conditions apply: a bona fide sale, goods clearly destined for the US at that sale, and an arm's-length price. Nissho Iwai's reference to "distortive nonmarket influences" raises a fact-specific question for China, and CBP's current position on it was not confirmed for this page.

Does the first sale rule reduce Section 301 tariffs?

Yes, when a claim qualifies. Section 301 duties, including the 12.5% forced-labor duty in effect since 24 July 2026, are ad valorem, so they are calculated on customs value. A lower first-sale value reduces them along with the general duty rate, the Merchandise Processing Fee and the Harbor Maintenance Fee.

What documents do I need from my supplier for a first sale claim?

You need the manufacturer's invoice and contract to the middleman, proof the middleman paid the manufacturer, evidence the goods were destined for the US at that sale, and, for related parties, transfer-pricing or cost data. Many Chinese factories decline to share their price to the middleman, and without it the claim cannot be supported.

Do I have to tell CBP I am using first sale?

Yes. Importers must declare first-sale use on the entry, a requirement Congress added in 2008 legislation after CBP proposed abolishing the rule. Importers must also keep the supporting records for five years under 19 U.S.C. 1508 and produce them if CBP issues a Form 28 request for information.

The first sale rule for customs valuation