USMCA Rules of Origin

The USMCA rules of origin (RoO) determine whether goods traded between the US, Canada, and Mexico qualify for zero-duty preferential treatment. They replaced NAFTA's rules on 1 July 2020 and are codified in Chapter 4 of the USMCA agreement, US implementing legislation (USMCA Implementation Act of 2020), and 19 CFR Part 182.

The four qualification paths

A good is USMCA-originating if it meets any of:

1. Wholly obtained or produced in one or more USMCA countries. Live animals born and raised, minerals extracted, plants harvested, etc.
2. Produced entirely from originating materials. Every input already qualifies as USMCA-originating.
3. Product-Specific Rule (PSR) in USMCA Annex 4-B. The rule may be a tariff shift (change in HS classification), a Regional Value Content threshold, or a combination.
4. De minimis. Up to 10 percent of the good's transaction value or Net Cost may be non-originating without disqualifying the good. Does not apply to Chapter 15 (fats/oils), Chapters 17-19 sugar products, Chapter 21 sauces, or Chapter 22 beverages.

Tariff shift explained

Every finished good has an HS classification. The PSR states which HS categories the inputs must NOT come from. Example (simplified) for a wooden chair (HTS 9401.61):

A change to subheading 9401.61 from any other heading

This means: as long as the wood, fabric, and metal inputs come from HS headings other than 9401 (furniture headings), the chair qualifies through the tariff shift alone. RVC is not required.

Regional Value Content (RVC) math

Two methods, choose the one that gives a higher result:

• Transaction Value method: RVC = ((TV - VNM) / TV) x 100. TV is the transaction value adjusted to FOB. VNM is Value of Non-originating Materials. Threshold typically 60 percent.
• Net Cost method: RVC = ((NC - VNM) / NC) x 100. NC is total cost minus royalties, sales promotion, packaging, and non-allowable interest. Threshold typically 50 percent.

Automotive goods must use Net Cost with 75 percent threshold (phased in from 66 percent at USMCA start).

The automotive-specific overlay

USMCA created three overlapping tests for passenger vehicles and light trucks:

1. Regional Value Content: 75 percent Net Cost for full vehicle, higher for core parts (engines, transmissions, axles, batteries).
2. Labour Value Content: 40 percent of vehicle content (45 percent for light trucks) must be produced by workers earning at least 16 USD per hour.
3. Steel and aluminum sourcing: 70 percent of the vehicle's steel and aluminum purchases must come from USMCA countries.

These are cumulative. Missing any one disqualifies the vehicle from preference. Automakers built entire supplier restructuring programs around this in 2020-2024.

Certification of Origin

No mandatory form. A valid USMCA Certification must contain:

1. Certifier type (importer, exporter, or producer)
2. Certifier name, title, address, phone, email
3. Exporter name and address
4. Producer name and address (or "Various" or "Confidential")
5. Importer name and address (if known)
6. Description of the good
7. HS classification to 6 digits
8. Origin criterion (A, B, C, or D per Annex 5-A)
9. Blanket period (max 12 months) and signature/date

Can be on the commercial invoice, in an email, or a separate PDF. Retain 5 years from entry per 19 CFR 182.15.

When a USMCA claim is denied

Common reasons: RVC math missing, tariff-shift analysis not documented, Certification of Origin missing a required data element, or the producer refused to certify. Remedy:

• File PSC within 300 days to reclaim overpaid MFN duty (see Post-Summary Correction guide).
• Or protest within 180 days of liquidation.

Use the LandedFees calculator with origin=MX or origin=CA and destination=US to model duty impact with and without USMCA preference before you commit to a sourcing decision.

Related terms

• FTA preference
• Certification of Origin
• Post-Summary Correction

Primary sources

• USMCA Chapter 4 (Rules of Origin): ustr.gov
• 19 CFR Part 182 (USMCA Implementation): ecfr.gov
• USMCA Annex 4-B (Product-Specific Rules): ustr.gov
• CBP USMCA Center: cbp.gov/trade/priority-issues/usmca