Definition
What Are USMCA Rules of Origin?
USMCA rules of origin are the legal tests that determine whether a good produced in Mexico, Canada, or the US qualifies for preferential duty rates under the US-Mexico-Canada Agreement. The two main tests are tariff shift (a change in HTS classification of non-originating materials) and regional value content (RVC).
The legal source
USMCA rules of origin are codified in the USMCA Annex 4-B (Product-Specific Rules) and implemented in US law at 19 CFR Part 182. Each HTS subheading has its own rule. The exporter or producer issues a USMCA certification of origin and maintains supporting records for 5 years (19 CFR § 182.110).
Tariff shift (CC, CTH, CTSH)
Change in chapter (CC) requires non-originating materials to classify in a different 2-digit chapter from the finished product — the most demanding shift. Change in tariff heading (CTH) requires a change at the 4-digit level. Change in tariff subheading (CTSH) requires a change at the 6-digit level — the least demanding. The applicable rule is product-specific; check the Annex 4-B entry for your exact HTS subheading before relying on USMCA preference.
Regional value content (RVC)
Some products use RVC instead of (or in addition to) a tariff shift. Two methods: the transaction value method typically requires 60% USMCA-region content, and the net cost method typically requires 50%. Automotive products have stricter rules — for passenger vehicles and light trucks, 75% RVC plus a labor value content (LVC) requirement of 40% production at $16+/hour applies, with a steel and aluminum sourcing requirement.
Yarn-forward and apparel
Apparel has its own special regime: 'yarn-forward' rules require that the yarn from which the fabric is spun, the fabric itself, and the cut-and-sew operations all occur in USMCA territory. Chinese yarn woven into fabric in China and cut-and-sewn in Mexico will not satisfy yarn-forward — even though substantial transformation analysis would call the resulting garment Mexican origin for non-preferential purposes. A limited Tariff Preference Level (TPL) quota allows a small volume of non-originating apparel to qualify.
USMCA vs. substantial transformation
USMCA preferential origin and CBP's general substantial transformation test are different legal questions and can reach different answers for the same product. A garment cut and sewn in Mexico from Chinese fabric is generally Mexican origin under substantial transformation (avoiding Section 301) but does not qualify for USMCA preferential rates (still paying the base duty). Run both analyses separately.
Frequently asked questions
- Does meeting USMCA rules of origin avoid Section 301?
- USMCA preference and Section 301 are separate questions. Section 301 attaches based on country of origin under CBP's general substantial transformation test. USMCA preference is about whether the product qualifies for the preferential US duty rate. A product can satisfy USMCA (and pay zero base duty) and also be Mexican origin for Section 301 purposes — but the analyses are independent.
- Who issues the USMCA certification of origin?
- The exporter, producer, or importer can issue the certification — there is no specific government form. It can be a standalone document or a statement on the commercial invoice, but it must contain the data elements specified in USMCA Article 5.2 and be supported by the records the certifier is required to maintain for 5 years.
- What is the difference between CC, CTH, and CTSH?
- All three are tariff shift rules at different HTS levels. CC requires a chapter change (digits 1–2), CTH requires a heading change (digits 1–4), and CTSH requires a subheading change (digits 1–6). The lower the level required, the easier the rule is to satisfy.
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