First Sale Rule: How Importers Cut Duties on Multi-Tier Transactions

The first sale rule is a customs valuation principle that lets an importer in a multi-tier transaction declare the price the middleman paid the manufacturer, rather than the higher price the importer paid the middleman. Every Section 301 duty, the July 2026 global action, the Brazil tariffs, and Section 232 duties on metal derivatives are ad valorem, so a 15 to 25 percent reduction in the dutiable base flows straight through to the duty bill. In 2026 the rule is more valuable than it has been in decades, and it is also under the most serious legislative threat it has faced. This guide covers the tests, the paperwork, and the risks.

What the First Sale Rule Requires

The doctrine comes from the Federal Circuit’s 1992 decision in Nissho Iwai and CBP has applied it ever since. To use the price from the first sale in the chain, the importer has to prove three things:

1. A bona fide sale between the manufacturer and the middleman, meaning title and risk of loss actually passed and the middleman was not simply an agent.
2. Goods clearly destined for the United States at the time of that first sale, shown by purchase orders, labeling, packing, or shipping documents that point to a U.S. buyer before the goods left the factory.
3. An arm’s-length price, either because the manufacturer and middleman are unrelated or because the importer can show the relationship did not influence the price.

Fail any one test and CBP will appraise the goods at the second sale price, plus interest and potentially penalties if the first sale claim was not supported.

Why the First Sale Rule Matters More in 2026

Consider a product that a trading company buys from a Vietnamese factory for $80 and sells to a U.S. importer for $100. Under the July 24, 2026 Section 301 action the Vietnam rate is 12.5 percent. Declaring $100, the duty is $12.50; declaring the first sale price of $80, the duty is $10.00. On Chinese-origin goods carrying an aggregate 37.5 percent, the same $20 reduction in value saves $7.50 per unit. Since April 6, 2026, Section 232 duties on steel and aluminum derivatives are also assessed on the full customs value rather than the metal content, which makes valuation strategy relevant to importers of finished goods who never thought about it before. Across a container of 10,000 units, these numbers are the difference between a program that works and one that does not.

The Documentation CBP Expects

• Manufacturer invoices and purchase orders between the factory and the middleman, matched to the middleman’s invoices to you.
• Proof of payment at each tier: bank records showing the middleman paid the factory and you paid the middleman.
• Evidence of U.S. destination at the time of the first sale: your purchase order dated before the factory sale, U.S. labeling and compliance marks, packing lists, and bills of lading.
• For related parties, transfer pricing support showing the price covers all costs plus a profit consistent with the industry, or comparable sales to unrelated buyers.
• A first sale declaration on the entry summary and a written program memo describing how the importer supports the claim.

The 2023 Court of International Trade decision in Meyer Corp. v. United States is the cautionary case. Meyer’s first sale claim on cookware failed largely because the company could not produce the parent-company financial records needed to prove the related-party price was at arm’s length. The court abandoned an earlier suggestion that non-market-economy influence disqualified Chinese sales, but the message on documentation stands: if you cannot produce the records, you do not have the program.

The Last Sale Valuation Act

In February 2026, Senators Bill Cassidy and Sheldon Whitehouse introduced S.3841, the Last Sale Valuation Act, which would require imports to be valued on the last sale before entry into the United States and eliminate first sale treatment entirely. The bill is backed by domestic textile interests and opposed by importer coalitions including the American Association of Exporters and Importers. As of this writing it has been referred to the Senate Finance Committee with no markup scheduled. Importers building a first sale program today should build it to survive on its own merits, and should watch this bill closely, because a repeal would be one of the largest single duty increases in years for brands that source through trading companies.

Building a First Sale Program the Right Way

Start with a review of your supply chain to identify which products actually move through a middleman with a genuine first sale. Then collect a full document set for a sample of entries and stress test it against the three requirements. Consider a binding valuation ruling from CBP Headquarters for the structure, which unlike classification rulings is filed by mail rather than through eRulings. Set up a recurring audit so that every entry claiming first sale has its file complete before liquidation, not after a CBP Form 28 request for information arrives.

Argents has cleared imports as a licensed U.S. customs broker for nearly 50 years, and our brokerage team reviews valuation alongside classification and origin for every importer we onboard. If your products move through a trading company and you are paying duty on the second sale, contact our customs team for a valuation review. Related reading: Section 301 tariffs in 2026, how CBP binding rulings work, and the Argents landed cost calculator for modeling the savings.

First Sale Rule FAQ