ImportChecker

Import planning guide

Preferential duty and rules of origin

A trade agreement can reduce duty, sometimes to zero. The lower rate applies only when the goods meet the product-specific origin rule and the claim is supported correctly.

Official source links checked 5 August 2026.

Short answer

Do not equate “shipped from” with “originating in.” Identify the agreement, tariff classification, product-specific rule, production history and required proof before using a preferential rate.

Origin is a legal test

Goods wholly obtained in one country can be straightforward, but manufactured goods may contain inputs from several places. Agreements use tests such as a change in tariff classification, a maximum value of non-originating materials, a regional value-content threshold or a specified production process.

The country on the seller’s address, parcel label or last port is not necessarily the country of origin. Simple packing, storage or routing through a member country usually does not create originating status.

A practical preference check

First classify the final product. Then find the product-specific origin rule in the agreement used by the importing country. Map the materials and processing against that rule. Finally, confirm the evidence and claim procedure for the shipment date.

  • Correct tariff code for the finished product.
  • Agreement in force between the destination and qualifying origin.
  • Bill of materials and origin of non-originating inputs.
  • Manufacturing operations performed in each country.
  • Statement, certificate or importer knowledge allowed by the agreement.
  • Direct-transport or non-alteration conditions where they apply.

Why calculators should not assume the lowest rate

A preference may be commercially likely but legally unavailable because a value threshold is missed, the supplier lacks records or the claim wording is wrong. Automatically applying the lowest displayed rate can understate landed cost. ImportChecker therefore treats preferences as conditional unless the imported data and user inputs support the route.

For planning, compare the ordinary most-favoured-nation rate with the possible preferential rate. Budget at the ordinary rate until the origin evidence is confirmed.

Retain the evidence

Agreements set record-retention and verification rules. Keep supplier declarations, origin statements, calculations, production records and transport evidence. Customs can ask for support after release and can recover underpaid duty if the claim fails.

Official sources

Next step

Use the import duty calculator for an early estimate, then open the destination’s authority in the source register. Read the estimator limitations before making a buying decision.