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Customs valuation: transaction value and the 6 WTO methods explained

Import duty is usually a percentage of the customs value, so how that value is set matters as much as the tariff rate. WTO members apply the Agreement on Implementation of Article VII of GATT 1994, which makes the transaction value, the price actually paid or payable plus certain additions, the main method, with five fall-back methods in a fixed order.

Checked against official sources: 2026-10

At a glance

Legal basisWTO Agreement on Implementation of Article VII of GATT 1994 (Customs Valuation Agreement)
Method 1Transaction value: the price actually paid or payable for the imported goods, with Article 8 adjustments
Methods 2 and 3Transaction value of identical goods, then of similar goods
Methods 4 and 5Deductive value, then computed value; the importer may ask to reverse this order
Method 6Fall-back method, with values that are not allowed, such as arbitrary or minimum values
Article 8 additionsCommissions (not buying commissions), packing and containers, assists, royalties and licence fees, proceeds to the seller
Freight and insuranceEach member decides whether to include transport and insurance to the place of import (CIF) or not
Related partiesTheir price can be used if the relationship did not influence it

The six methods, in order

What goes into the transaction value

The price actually paid or payable is the total payment made or to be made by the buyer to or for the benefit of the seller for the imported goods. Article 8 adds certain costs if the buyer bears them and they are not already in the price: commissions and brokerage except buying commissions, the cost of containers and packing, assists (goods or services supplied free or at reduced cost by the buyer for production), royalties and licence fees related to the goods, and any proceeds of later resale that go to the seller. Whether transport, insurance and related charges to the place of import are included is left to each member, which is why some countries value on a CIF basis and others on FOB.

When the transaction value cannot be used

The transaction value applies only if there are no restrictions on the buyer's use of the goods other than those imposed by law, no conditions whose value cannot be determined, enough information for the Article 8 adjustments, and, where buyer and seller are related, the relationship did not influence the price. Otherwise customs moves down the list of methods. Under the fall-back method, customs may not use, among others, the selling price in the importing country, the higher of two alternative values, the domestic price in the exporting country, minimum values, or arbitrary or fictitious values.

Step by step

  1. Start from the price actually paid or payable on the commercial invoice.
  2. Add Article 8 items the buyer pays separately: selling commissions, packing, assists, royalties, proceeds to the seller.
  3. Add freight and insurance to the border if the importing country values on a CIF basis.
  4. If buyer and seller are related, keep evidence that the relationship did not influence the price.
  5. Show all charges clearly on the invoice so customs can see what the price covers.
  6. If customs rejects the transaction value, ask which method it applies and why.

Documents you usually need

Common problems and how to avoid them

Customs adds the value of moulds the buyer supplied to the factory.

What to do: Moulds supplied free by the buyer for production are assists, which Article 8 adds to the transaction value.

Customs questions the price between related companies.

What to do: The price can be accepted if the relationship did not influence it; provide evidence such as pricing documentation.

The invoice shows FOB but the importing country values on CIF.

What to do: Members decide whether freight and insurance are included; add them for a CIF-basis country.

Customs uses a minimum or reference value.

What to do: Minimum values and arbitrary or fictitious values are not allowed under the fall-back method of the agreement.

Sources

  1. Customs valuation: the WTO Agreement (paper for the UN Expert Group on International Merchandise Trade Statistics, December 2007) World Trade Organization

Rules change often. This note is practical guidance based on the sources above, not legal advice. Confirm current requirements with the authority, your importer or a licensed customs broker before you ship.

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Common questions

What is transaction value in customs?

The price actually paid or payable for the imported goods, adjusted under Article 8 of the WTO Customs Valuation Agreement.

What are the six customs valuation methods?

Transaction value, identical goods, similar goods, deductive value, computed value and the fall-back method, applied in that order.

Are buying commissions part of the customs value?

No. Commissions and brokerage are added, except buying commissions.

What is an assist in customs valuation?

Goods or services supplied by the buyer free or at reduced cost for producing the imported goods, such as moulds or tools; their value is added.

Is freight included in the customs value?

It depends on the country: the agreement lets each member decide whether to include transport and insurance to the place of import.

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