What is the difference between preferential and non-preferential origin?

Non-preferential origin gives goods a nationality for duties, trade measures and marking. Preferential origin decides whether goods qualify for a trade agreement's lower duty, under that agreement's own rules.

What is substantial transformation?

Processing that turns inputs into a new product. In the EU, origin goes to the country of the last substantial, economically justified processing, in an undertaking equipped for it; the US applies the same idea.

What is regional value content?

The share of a good's value that comes from the trade region. Under the USMCA, RVC = (transaction value − value of non-originating materials) ÷ transaction value × 100, with a general threshold of 60%.

Term

Rules of origin

Rules of origin are the criteria that decide which country a product comes from, and so which duty rate, quota or trade measure applies to it. Goods wholly obtained in one country originate there; otherwise origin goes to where the last substantial transformation happened, judged by a change of tariff classification or a minimum share of value added.

Also called origin rules, substantial transformation, regional value content, preferential origin, non-preferential originUpdated 13 October 2026

Two sets of rules

Non-preferential rules give every product a nationality — for duties, trade measures, statistics, public tenders and origin marking. Preferential rules sit in each trade agreement and decide whether goods earn its lower duty. The WTO's Agreement on Rules of Origin covers only the non-preferential kind; under the Union Customs Code, preferential rules are laid down in the agreements themselves.

The tests

Test	What it asks
Wholly obtained	Was the product obtained entirely in one country — grown, mined, born there?
Last substantial transformation	Where did the last substantial, economically justified processing make a new product? (EU, Article 60)
Change of tariff classification	Do the finished goods fall under a different tariff heading from their foreign inputs?
Value added	Does regional content reach a set share of the value? (USMCA 60% on transaction value)

In the US, further work in another country moves origin there only if it effects a substantial transformation. In the Gulf, the GCC's 1981 Unified Economic Agreement set its national-product test at value added of at least 40% of final value, with GCC citizens owning at least 51% of the producing plant.

Worked example: the USMCA value test

RVC = (TV − VNM) ÷ TV × 100 · transaction value $100, non-originating materials $45 → (100 − 45) ÷ 100 × 100 = 55% → below the 60% threshold → does not originate on this test

60% (transaction value) or 50% (net cost) is the USMCA's general value threshold; most goods have product-specific rules that set their own test. TV excludes the cost of the international shipment.

The mistake people make

Assuming a final step in a third country changes origin. Repacking, relabelling or simple assembly abroad usually leaves origin where the product was really made; only processing that amounts to a substantial transformation, or that meets the agreement's tariff-shift or value rule, moves it.

FAQ

Rules of origin: common questions

What is the difference between preferential and non-preferential origin?: Non-preferential origin gives goods a nationality for duties, trade measures and marking. Preferential origin decides whether goods qualify for a trade agreement's lower duty, under that agreement's own rules.
What is substantial transformation?: Processing that turns inputs into a new product. In the EU, origin goes to the country of the last substantial, economically justified processing, in an undertaking equipped for it; the US applies the same idea.
What is regional value content?: The share of a good's value that comes from the trade region. Under the USMCA, RVC = (transaction value − value of non-originating materials) ÷ transaction value × 100, with a general threshold of 60%.