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First Sale Rule: Declare the Factory Price, Not the Middleman Invoice

Updated 2026-10-22. Statutory language quoted from 19 CFR § 152.103 and the CBP First Sale Declaration requirement (73 FR 49939); tariff rates pinned from our USITC-derived HTS snapshot (generated 2026-10-19). Every computation below is recomputed from those pinned inputs by the page generator at build time.

1. Which price is “transaction value”?

The default basis of appraisement is transaction value: “the price actually paid or payable for the merchandise when sold for exportation to the United States,” plus five enumerated additions such as packing costs and selling commissions. In the textbook chain — a manufacturer sells to a trading company, which resells to the U.S. importer — there are two candidate prices. The regulation's default anchor is the sale closest to importation, the middleman's higher invoice. The first sale rule (often called first sale for export) is the lawful alternative: declare the manufacturer's lower price as the dutiable base.

Two structural points matter. First, the choice belongs to the importer and must be exercised at entry: since August 20, 2008, CBP has required a First Sale Declaration whenever the transaction value of a consumption entry rests on the first or earlier sale in a series of sequential sales. Second, the rule reduces the base of every ad valorem layer stacked on the value — MFN duty, Section 301 or reciprocal-program add-ons, and the value-based Merchandise Processing Fee all shrink together, though fees with floors and caps shrink only within their bounds.

2. The three-prong Nissho Iwai test

Courts fixed the conditions in Nissho Iwai American Corp. v. United States, 982 F.2d 505 (Fed. Cir. 1992). All three prongs must hold at the moment of the first sale:

1. Bona fide sale. A genuine seller-buyer exchange between manufacturer and middleman: title transfers, risk passes, payment is owed. A commission agent who never takes title fails this prong — ruling H323585 denied first-sale treatment precisely because the middleman held neither title nor risk of loss.
2. Arm's-length terms that substantially match. The first sale's pricing and conditions must substantially match the last sale to the unrelated U.S. buyer. Material divergences (different quantities, payment tenors, warranty burdens) invite a finding that the prices are not comparable.
3. Clearly destined for the United States. At the time the factory sold to the middleman, the goods must have been identifiably bound for the U.S. market. CBP's regulations treat a through bill of lading naming the U.S. destination as the standard evidence of a sale for export placed for through shipment.

Related parties raise the stakes on prong two: if the factory and the middleman are related, the importer carries the burden of showing the price would be acceptable between unrelated dealers, and CBP may probe the circumstances of sale in detail.

3. Two worked examples

Rates from our HTS snapshot (USITC REST export, generated 2026-10-19T13:27:57Z); chain economics are pinned illustrative inputs, recomputed by the generator at build time.

The percentage saving in the duty line always equals the percentage cut in the declared base: (100,000 − 70,000) / 100,000 = 30.0%. At twelve shipments a year, example 1 alone returns $35,280 of annualized duty relief for the same physical trade flow. The Merchandise Processing Fee follows the same direction within its bounds: at 0.3464 percent (FY2027), the first-sale entry pays $242.48 versus $346.40 — $103.92 less per entry — but the $34.58 minimum and $670.86 cap mean very small or very large entries converge to flat fees regardless of the valuation basis.

4. What CBP requires at entry

• Declare at filing. The First Sale Declaration rides on the consumption entry (or warehouse withdrawal): when value rests on an earlier-than-last sale, say so at the time of entry rather than after.
• Evidence the destination prong. A through bill of lading covering the movement to the United States is the regulation's named proof that the first sale was a sale for export to this country.
• Keep the chain documented. Contemporaneous purchase orders, factory invoices, the middleman's resale invoice, and payment records let a reviewer trace both prices and the matching of terms.
• Mind the additions. Selling commissions incurred by the buyer are added back to transaction value under 19 CFR § 152.103(b)(1)(ii); structure intermediary compensation so the declared base reflects reality.

5. Where first sale claims fail

Audit outcomes concentrate in three patterns. Agent structures: the middleman operates on commission without taking title or risk, so no second sale exists to subordinate — the H323585 fact pattern. Destination doubt: goods bought for regional distribution cannot show U.S. destiny at the first sale, defeating prong three until documentary routing exists. Term divergence: extended payment terms granted only at the factory tier break the substantial-match prong, forcing appraisal on the last sale. Each failure is retroactive: the exposure is the difference between declared and redetermined values across the affected entry window, which is why the declaration discipline matters more than the discount itself.

6. Four checks before you elect first sale

1. Map the chain. Confirm the intermediary buys and resells in its own name (title and risk), not as a bare commission agent.
2. Match the terms. Reconcine quantity, payment, and delivery conditions across both sales in writing; document any divergence rationale.
3. Prove U.S. destiny early. Collect the through bill of lading or equivalent routing evidence dated at the first sale.
4. Quantify honestly. Model the all-in effect with the tariff and landed-cost calculator and confirm the classification behind the rate using our HS code reference; valuation savings multiply whatever rate applies.

7. Frequently asked questions

What is the first sale rule in US customs valuation?

In a multi-tier chain such as factory to trading company to U.S. importer, the first sale rule lets the importer declare the lower factory-level price as the transaction value, provided the first sale was bona fide, at arm's length on terms that substantially match the last sale, and the goods were clearly destined for the United States at the moment of that first sale.

How much duty can the first sale rule save?

The saving equals the markup between the two prices applied through the duty rate. On a $70,000 factory invoice versus a $100,000 middleman invoice, a 9.8 percent ceramic-tableware rate yields $6,860 versus $9,800 in duty per 1,000-unit shipment, a $2,940 saving that scales linearly with volume.

Do related-party transactions disqualify first sale?

Not automatically. When the factory and the middleman are related, CBP scrutinizes whether the relationship influenced the price; the importer bears the burden of showing the first-sale price would be acceptable for unrelated parties, typically by demonstrating circumstances consistent with arm's-length dealing.

Does first sale reduce Merchandise Processing Fees too?

Partially. The ad valorem MPF of 0.3464 percent for FY2027 shrinks with the declared value, but it never falls below the $34.58 per-entry minimum nor rises above the $670.86 cap, so very low-value entries see no reduction while typical mid-range entries do.

What happens if CBP denies a first sale claim after entry?

The declared value is redetermined upward to the last-sale price, duties are assessed on the difference, and the exposure is retroactive across entries. Ruling H323585 illustrates the failure mode: a middleman holding neither title nor risk of loss meant no bona fide first sale existed, so the higher value governed.

8. Recap

• Transaction value anchors to the sale for exportation to the United States; in multi-tier chains the importer may lawfully elect the first qualifying sale as the base.
• The Nissho Iwai test demands a bona fide sale, substantially matching arm's-length terms, and clear U.S. destiny at the first sale — all provable with documents created at the time, not reconstructed later.
• A 30% lower declared base cuts the duty line 30% at the same rate: $2,940 per 1,000-unit shipment on a 9.8% line, $870 on a 2.9% line.
• Declare first sale at entry, evidence the through bill of lading, and respect the MPF floor and cap when projecting fee savings.
• Stress-test candidates in the FOB vs CIF valuation guide before filing, and watch stacking interactions in our stacked tariffs breakdown.