The six CBP customs valuation methods — a plain-English 2026 guide to 19 U.S.C. Section 1401a

Why the hierarchy exists: 19 U.S.C. Section 1401a in one paragraph

Every article of merchandise entering the United States must be appraised for duty purposes under a customs value declared on the entry summary (CBP Form 7501) filed with U.S. Customs and Border Protection. The framework for that appraisement is set out in 19 U.S.C. Section 1401a and elaborated in 19 CFR Part 152. The statute lists six methods and forces them to be applied in strict sequence, so that every importer, every port of entry, and every commodity is appraised using the same top-of-the-stack method whenever the facts allow. The hierarchy exists because Congress wanted valuation to be objective and predictable rather than negotiable: the importer does not get to shop for the method that produces the lowest declared value. If Method 1 can be applied, Method 1 must be applied; if it cannot, the importer moves to Method 2, then Method 3, then Method 4, then Method 5, then Method 6, in that order, with one narrow exception (Methods 4 and 5 can be reversed on the importer’s written request under 19 U.S.C. Section 1401a(a)(2)). The rest of this guide walks each method in the order the statute requires.

Section 232 additional duties on steel and aluminum derivative articles, Section 301 additional duties on China-origin merchandise, and any antidumping or countervailing duties (AD/CVD) are all assessed as a percentage of the same declared customs value as the ordinary column-1 rate. A 10 percent understatement understates the ordinary duty and every additional-tariff line simultaneously. Getting the method right, and getting the additions right within the method, is the single most consequential compliance discipline for a 2026 import program.

Method 1 — Transaction value of the imported merchandise

Transaction value is the primary method under 19 U.S.C. Section 1401a(b) and applies in the great majority of import entries. It is defined as the price actually paid or payable for the merchandise when sold for exportation to the United States, plus five statutory additions (see the next section). Four conditions must be satisfied for Method 1 to apply: (i) there is a bona fide sale for exportation to the United States, (ii) there are no restrictions on the disposition or use of the merchandise other than restrictions imposed or required by law, restrictions on geographic resale, or restrictions that do not substantially affect the value of the merchandise, (iii) the sale or the price is not subject to any condition or consideration for which a value cannot be determined with respect to the merchandise, and (iv) proceeds of any subsequent resale accruing to the seller can be appropriately added, or the parties are related in a way that does not disqualify the price (see the related-party section below).

The “price actually paid or payable” is defined in 19 U.S.C. Section 1401a(b)(4)(A) as the total payment made or to be made by the buyer to or for the benefit of the seller. That includes the invoice price and any indirect payments (settlement of a seller’s debt to a third party at the seller’s direction, payments to a related company for the seller’s benefit). It excludes post-importation services (installation, assembly, technical assistance) and international freight and insurance provided those charges are separately identified. That last exclusion is why U.S. customs value is generally computed on an FOB rather than a CIF basis, in contrast to many foreign customs regimes.

The five statutory additions to price actually paid or payable

Under 19 U.S.C. Section 1401a(b)(1)(A)-(E), five categories of amounts must be added to the price actually paid or payable to arrive at transaction value, to the extent not already included in that price:

• Packing costs incurred by the buyer. Any packing costs incurred by the buyer with respect to the imported merchandise. This captures export packing supplied or paid for by the buyer that is not already reflected in the seller’s invoice.
• Selling commissions incurred by the buyer. Any commission the buyer pays to a selling agent that is related to the sale of the imported merchandise. Buying commissions (paid by the buyer to its own agent for representing the buyer’s interests) are not additions; the distinction between selling and buying commissions is heavily litigated and the substance of the relationship, not the label, controls.
• Assists. The apportioned value of any assist supplied by the buyer, defined in 19 U.S.C. Section 1401a(h)(1)(A) as materials, components, parts, and similar items incorporated in the merchandise; tools, dies, molds, and similar items used in producing the merchandise; merchandise consumed in producing the merchandise; and engineering, development, artwork, design work, and plans and sketches undertaken outside the U.S. and necessary for the production. The value of the assist is apportioned across the production run and added to transaction value on every entry that draws on the assist.
• Royalties and license fees. Any royalty or license fee the buyer is required to pay, directly or indirectly, as a condition of the sale of the merchandise for exportation to the United States. Post-importation royalties tied to U.S. resale of the imported goods are also typically included; royalties for the right to reproduce the merchandise in the United States are excluded.
• Proceeds of subsequent resale. The proceeds of any subsequent resale, disposal, or use of the imported merchandise that accrue directly or indirectly to the seller. If the seller is entitled to a share of the U.S. downstream margin, that share is added to transaction value at importation.

The additions are the single most common source of understated customs value. Assists in particular are missed on virtually every first-time compliance audit: the U.S. buyer ships tooling to the Chinese factory, or emails a CAD file to the Vietnamese contract manufacturer, and never adds either the tooling cost or the engineering cost to the declared value. Under the reasonable-care standard at 19 U.S.C. Section 1484, the importer is expected to have a process that identifies each addition, apportions it, and documents its inclusion in the declared value on every affected entry.

Related-party transactions and the circumstances-of-the-sale test

Transaction value between related parties (as defined in 19 U.S.C. Section 1401a(g), covering family relationships, officer and director cross-holdings, direct or indirect ownership of 5 percent or more, and various control relationships) is subject to a heightened test. Under 19 U.S.C. Section 1401a(b)(2)(B), the related-party price is accepted as transaction value only if either the circumstances of the sale indicate the relationship did not influence the price, or the transaction value closely approximates one of three test values: (i) transaction value in sales to unrelated buyers of identical or similar merchandise for export to the U.S., (ii) deductive value for identical or similar merchandise, or (iii) computed value for identical or similar merchandise.

The circumstances-of-the-sale test is an inquiry into how the price was set. CBP looks for evidence that the price was set in accordance with the normal pricing practices of the industry, in a manner consistent with how the seller settles prices with unrelated buyers, or in a way that recovers all costs plus a profit representative of the firm’s overall profit realized over a representative period. Transfer-pricing studies prepared for income-tax purposes are relevant but not conclusive; CBP will look at the substance of the pricing methodology. If the related-party price cannot survive the circumstances-of-the-sale test and does not closely approximate a test value, transaction value is unavailable and the importer must move down the hierarchy to Method 2 or later. CBP’s Informed Compliance Publication “Related Party Transactions” is the required reference for any related-party import program.

First-sale-for-export doctrine (Nissho Iwai)

In multi-tiered transactions (foreign manufacturer sells to a foreign middleman, foreign middleman resells to the U.S. importer), the first-sale-for-export doctrine permits the importer to declare the earlier “first sale” price as the transaction value, rather than the later middleman-to-importer price. The doctrine was established by the Federal Circuit in Nissho Iwai American Corp. v. United States, 982 F.2d 505 (Fed. Cir. 1992), which held that where an earlier sale in a multi-tiered transaction meets the statutory criteria for transaction value, that earlier sale is a permissible basis for appraisement.

The Nissho Iwai standard requires three prongs, each of which must be documented contemporaneously: (1) the merchandise must be clearly destined for export to the United States at the time of the first sale (typically evidenced by purchase orders, manufacturing specifications tied to U.S. requirements, and export documentation naming the U.S. as the destination country); (2) the manufacturer and the middleman must deal at arm’s length (or if related, the related-party test above must be satisfied); and (3) the transaction between manufacturer and middleman must be a bona fide sale, with title and risk of loss transferring and consideration flowing, not a mere accounting entry or intra-company transfer. Where all three prongs are met, the declared transaction value can be materially lower than the invoice price the U.S. importer actually pays, reducing duty on every affected entry.

First-sale is heavily audited by CBP and the documentation burden is substantial. Importers that use first-sale must maintain contemporaneous evidence of all three prongs for every entry that relies on the doctrine, including copies of the manufacturer-to-middleman invoices, purchase orders, and payment records. CBP has issued numerous CROSS rulings addressing first-sale documentation adequacy; those rulings are the best guide to the level of evidence required and are searchable at rulings.cbp.gov/home.

Methods 2 & 3 — Transaction value of identical / similar merchandise

If Method 1 cannot be applied on the facts (for example, the goods are not the subject of a bona fide sale for export — consigned goods, samples, leased goods — or the sale is between related parties in a way that fails the related-party tests), the importer moves to Method 2 under 19 U.S.C. Section 1401a(c): transaction value of identical merchandise. Method 2 uses the previously accepted transaction value of “identical merchandise” sold for export to the United States and exported at or about the same time as the merchandise being appraised. “Identical merchandise” is defined in 19 U.S.C. Section 1401a(h)(2) as merchandise that is the same in all respects, produced in the same country by the same person, though minor differences in appearance are not disqualifying.

Method 3 under 19 U.S.C. Section 1401a(c), tried after Method 2, uses the previously accepted transaction value of “similar merchandise” sold for export to the United States. “Similar merchandise” under 19 U.S.C. Section 1401a(h)(4) is merchandise that (i) was produced in the same country by the same person, (ii) is like the merchandise being appraised in characteristics and component materials, and (iii) is commercially interchangeable with the merchandise being appraised. Both Methods 2 and 3 require adjustments to reflect differences in commercial level or quantity, and both are used comparatively rarely in practice because a reliable comparable transaction value from another importer’s entry is difficult to identify without CBP’s cooperation.

Method 4 — Deductive value

If Methods 1, 2, and 3 cannot be applied, the importer moves to deductive value under 19 U.S.C. Section 1401a(d). Deductive value starts from the unit price at which the imported merchandise (or identical or similar merchandise) is sold in the United States, in the greatest aggregate quantity, either at or about the time of importation of the merchandise being appraised, or if not, at the earliest date after importation of the merchandise being appraised but before the close of the 90th day after importation. From that resale price, the statute requires four deductions to work backward to a customs value: (i) commissions or profit and general expenses in connection with U.S. sales of imported merchandise of the same class or kind, (ii) the usual costs of transportation and insurance incurred within the United States, (iii) any duties and other federal taxes, and (iv) the value of any further processing performed on the merchandise after importation if applicable.

Deductive value is used in secondary-market and consignment scenarios where a bona fide export sale never occurred but the goods are sold in the U.S. market after import. It is data-intensive to prepare and defend, requiring reliable evidence of the U.S. resale price at the greatest aggregate quantity and reliable evidence of the four deductions.

Method 5 — Computed value

Computed value under 19 U.S.C. Section 1401a(e) is a “build-up” method that constructs the customs value from the producer’s cost of production plus profit and general expenses. It equals the sum of (i) the cost or value of the materials and the fabrication and other processing employed in producing the imported merchandise, (ii) an amount for profit and general expenses equal to that usually reflected in sales of merchandise of the same class or kind as the imported merchandise made by producers in the country of exportation for export to the United States, (iii) any assist not otherwise included, and (iv) the packing costs.

Computed value requires cooperation from the foreign producer, who must supply cost-of-production data. It is used in scenarios where the importer has direct cost visibility (typically related-party scenarios where the importer’s corporate group controls the producer) and can document the cost buildup with contemporaneous accounting records. Under 19 U.S.C. Section 1401a(a)(2), the importer can elect in writing to have Method 5 applied before Method 4; this election is used when cost data is more reliable than U.S. resale data.

Method 6 — Fallback / reasonable means

If none of Methods 1 through 5 can be applied on the facts, the fallback method under 19 U.S.C. Section 1401a(f) applies: the customs value is determined using reasonable means consistent with the principles of the prior five methods and the information available in the United States. In practice this is a supervised, iterative process with CBP: the importer proposes a valuation approach that most closely follows one of the prior five methods, and CBP either accepts the approach or requires modifications. Certain values are prohibited under 19 U.S.C. Section 1401a(f)(2) even under the fallback method: the selling price in the U.S. of merchandise produced in the U.S., a value based on the selling price in the country of exportation, minimum values, arbitrary or fictitious values, and so on.

The fallback method is rarely used in ordinary commercial import practice; it appears most often in unusual fact patterns such as barter transactions, returned goods, or highly specialized capital equipment for which no comparable market exists. When it is used, the documentation burden is heaviest of any method because the customs value has been constructed rather than found in a market transaction.

How valuation stacks with Section 232 and Section 301 tariffs

Section 232 additional duties (steel, aluminum, and the derivative-articles list proposed in Federal Register notice 2026-15961 on August 6 2026) and Section 301 additional duties (the China Lists 1–4) are assessed on the same declared customs value as the ordinary column-1 duty rate. A misvaluation therefore multiplies through the additional-tariff lines: if the ordinary rate is 3.7 percent and the article is captured by a 25 percent Section 232 derivative-articles inclusion, the combined ad valorem exposure is 28.7 percent of declared value, and a 10 percent understatement in declared value understates the total duty by 10 percent on both lines simultaneously.

The perverse incentive this creates — higher declared value equals more absolute duty — is precisely why misvaluation is a Section 1592 penalty exposure rather than a matter of importer discretion. CBP audit programs specifically target understated valuation on entries captured by Section 232 or Section 301 additional tariffs, and the enforcement priority for the 2026 tariff cycle is high. Importers with material Section 232 or Section 301 exposure should review their assist accounting, royalty-inclusion analysis, and related-party pricing before the audit cycle, not after.

Penalties, reasonable care, and prior disclosure

Under 19 U.S.C. Section 1592, any material false statement, act, or omission (or any material omission) in the entry, introduction, or attempted introduction of merchandise triggers civil penalty exposure. Misdeclared customs value is a paradigm Section 1592 violation. The penalty ceiling depends on the culpability finding: for fraud, the penalty ceiling is the domestic value of the merchandise; for gross negligence, the lesser of the domestic value or four times the unpaid duties; for negligence, the lesser of the domestic value or two times the unpaid duties. Unpaid duties themselves are separately assessed and collected regardless of the culpability finding, going back up to 5 years under the statute of limitations at 19 U.S.C. Section 1621 (which can extend to 5 years from discovery of the fraud in fraud cases).

The importer’s best defense against Section 1592 exposure is documented reasonable care under 19 U.S.C. Section 1484. Reasonable care is not defined by statute as a checklist but is elaborated in CBP’s Informed Compliance Publications and in a substantial body of Court of International Trade case law. Elements consistently required include: use of qualified personnel (in-house licensed customs broker, outside counsel, or licensed broker of record), written classification and valuation procedures, systematic use of CBP resources (binding rulings under 19 CFR Part 177, CROSS ruling database, Informed Compliance Publications), and periodic post-entry review of a sample of entries to identify systemic errors.

Where an importer discovers a valuation error, the prior disclosure protocol under 19 U.S.C. Section 1592(c)(4) provides the primary mitigation pathway. A valid prior disclosure filed before CBP has commenced or is likely to commence a formal investigation caps the penalty at interest on the unpaid duties (for negligence or gross negligence) and provides substantial mitigation for fraud. To be valid, the disclosure must be filed with the port director in the port at which the violation occurred (or with the appropriate CBP office for national-scope violations), must identify the class or kind of merchandise involved, must identify the importation included in the disclosure with sufficient particularity to identify the specific entries, must specify the material false statements or omissions, and must tender the actual loss of duties. The prior-disclosure procedure is technical and time-sensitive; the disclosure is only as good as the completeness of the tender and the specificity of the entries covered.

Related reading

• HTS classification guide for beginners — 10-digit HTSUS codes explained (2026)
• Section 232 inclusion-rebuttal guide
• Section 232 derivative articles 2026 list

FAQ

References and primary sources

1. 19 U.S.C. Section 1401a — Value (customs valuation).
2. 19 U.S.C. Section 1484 — Entry of merchandise (reasonable care).
3. 19 U.S.C. Section 1592 — Penalties for fraud, gross negligence, and negligence.
4. 19 U.S.C. Section 1621 — Limitation of actions.
5. 19 CFR Part 152 — Classification and appraisement of merchandise.
6. 19 CFR Part 177 — Administrative rulings.
7. CBP Informed Compliance Publication — What Every Member of the Trade Community Should Know About: Customs Value.
8. CBP Informed Compliance Publication — Reasonable Care.
9. CBP Informed Compliance Publication — Related Party Transactions.
10. Nissho Iwai American Corp. v. United States, 982 F.2d 505 (Fed. Cir. 1992) — first-sale-for-export doctrine.
11. U.S. Customs and Border Protection — Customs Rulings Online Search System (CROSS).
12. Federal Register notice 2026-15961 — BIS Section 232 derivative-articles proposal (August 6 2026).
13. Related reading — HTS classification guide for beginners 2026.
14. Related reading — Section 232 inclusion-rebuttal guide.
15. Related reading — Section 232 derivative articles 2026 list.

TariffWatch is a data and workflow tool that estimates Section 232 tariff exposure from publicly available Federal Register, USITC, and CBP data. TariffWatch is NOT a licensed customs broker under 19 CFR 111, NOT a filer of record, and NOT a legal-advice service. This is not customs classification advice. Compliance decisions remain the responsibility of the importer and their customs broker or trade attorney. TariffWatch does not guarantee that any classification, exposure estimate, or comment letter will be accepted by CBP, BIS, or Commerce.

TariffWatch is not affiliated with the U.S. Department of Commerce, the Bureau of Industry and Security (BIS), U.S. Customs and Border Protection (CBP), or the U.S. International Trade Commission (USITC).

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