USMCA Rules of Origin: Certification, Verification, and Refunds

Under the United States-Mexico-Canada Agreement, the USMCA rules of origin decide whether a good moving among the three countries qualifies for reduced or zero tariffs. A good qualifies if it was wholly obtained in the region, produced entirely from materials that already qualify, or transformed enough during North American production to satisfy the product-specific rule tied to its tariff classification. Get the analysis wrong and the importer pays the full most-favored-nation duty rate at the border.

The Three Paths to Originating Status

The agreement recognizes three ways a good can earn originating status. The first is the simplest: goods wholly obtained or produced entirely within the United States, Mexico, or Canada. Minerals mined in the region, crops harvested there, animals born and raised there, and goods made from those animals all fall into this bucket.¹

The second path covers goods produced entirely within USMCA territory using only originating materials. If every input already qualifies, the finished good qualifies too.

The third path is where most real-world analysis happens. Goods that contain non-originating materials can still qualify, but only if those materials are sufficiently transformed during North American production to satisfy the good’s product-specific rule of origin.¹

Product-Specific Rules and Tariff Shifts

Annex 4-B of the agreement contains a product-specific rule for every tariff classification. The most common requirement is a tariff shift: every non-originating material must change its Harmonized System classification during production in North America. The reasoning is direct. If a raw or semi-finished input enters the region classified under one HS heading and leaves as a finished good classified under a different heading, the change proves meaningful production happened here.²

A concrete example: cotton fabric imported under HS Chapter 52 and sewn into a T-shirt classified in Chapter 61 satisfies the required shift, because the fabric moved from one chapter to another through manufacturing.

Some product-specific rules go further. They may require a tariff shift plus a minimum regional value content (RVC), forcing producers to show that a meaningful share of the good’s value comes from within North America.

Calculating Regional Value Content

Two methods are available for most goods. The Transaction Value Method starts with the price actually paid or payable for the good, subtracts the value of non-originating materials, divides by the transaction value, and multiplies by 100. For most goods, the result must reach at least 60 percent.³ Because it relies on the sale price rather than a full cost breakdown, this method is often the easier path.

The Net Cost Method begins with the good’s total cost, strips out sales promotion, marketing, after-sales service, royalties, shipping, and packing, subtracts the value of non-originating materials from that net cost, divides by the net cost, and multiplies by 100. The minimum threshold is 50 percent for most goods.³ Net Cost is mandatory in certain situations, including when a customs verification deems the transaction value unacceptable and when the product-specific rule requires it (as with automotive goods).

Producers who manufacture their own components can designate a self-produced part as an intermediate material. The component’s origin is calculated separately; if it qualifies, its full value counts as originating in the finished product’s RVC calculation, and the non-originating inputs that went into the component drop out of the equation. Intermediate material designations cannot be stacked: a self-produced material inside an intermediate material that already has its own RVC requirement cannot itself be designated as intermediate.⁴

The De Minimis Safety Valve

Not every non-originating material will neatly satisfy a tariff shift. A good can still qualify if the non-originating materials that fail the required shift represent no more than 10 percent of either the good’s transaction value or its total cost.⁵ The threshold was raised from 7 percent under NAFTA.⁶

Textiles play by different rules. For fabrics and related products under HS Chapters 50 through 60, the test switches from value to weight: non-originating materials that fail the shift cannot exceed 10 percent of the good’s total weight, and elastomeric content cannot exceed 7 percent. For finished garments and made-up textile articles under Chapters 61 through 63, the same weight-based limits apply to the component that determines the garment’s tariff classification.²

Agricultural products in HS Chapters 1 through 27 face a narrower rule. The standard 10 percent exception generally does not apply unless the non-originating material is classified under a different subheading than the finished good. Certain dairy products used as inputs in other dairy goods or infant formula are excluded from de minimis entirely.²

Accumulation Across the Three Countries

The accumulation rule treats production across the three countries as one continuous process. A good produced in one USMCA country using originating materials from another counts those materials as originating for purposes of any product-specific rule. Even production performed on a non-originating material in one USMCA country contributes toward the finished good’s originating status when the material moves to another USMCA country for further processing, regardless of whether the first round of work was enough on its own to qualify the material.⁷

The practical result is that a supply chain spread across all three countries doesn’t break the origin analysis. A part partially manufactured in Mexico, further processed in the United States, and installed into a finished product in Canada can earn originating status through the combined work.

Automotive Goods Face a Higher Bar

Vehicles and automotive parts are governed by substantially tougher rules than other goods. Passenger vehicle and light truck parts listed in the agreement’s tables must meet a regional value content of 75 percent under Net Cost (or 85 percent under Transaction Value) as of July 1, 2023. Heavy truck parts follow a slower schedule, reaching 70 percent under Net Cost (or 80 percent under Transaction Value) by July 1, 2027.⁸

On top of RVC, vehicle producers must satisfy a Labor Value Content requirement. A specified share of the vehicle’s value must come from workers earning at least $16 per hour. Producers can earn additional LVC credit through qualifying expenditures on research and development, information technology wages, and high-wage assembly operations at engine, transmission, or advanced battery plants in North America.⁹ A separate steel and aluminum purchasing rule requires that 70 percent of a vehicle manufacturer’s purchases of those metals, by value, come from North American sources. Failing any one of these obligations can result in denial of preferential treatment for the vehicle.

Certification of Origin

Unlike the old NAFTA system, the USMCA does not require a standardized certification form. The certification can appear on an invoice, a letter, or any other commercial document, and it can be sent electronically through any method U.S. Customs and Border Protection accepts. The certifier must be the importer, exporter, or producer of the goods.¹⁰

Whatever form it takes, the certification must include nine data elements:¹¹

Whether the certifier is the importer, exporter, or producer
Certifier name, title, address, phone, and email
Exporter name, address, email, and phone if different from the certifier
Producer name, address, email, and phone if different from the certifier or exporter; the producer may state “Various” or “Available upon request” for confidentiality
Importer name, address, email, and phone if known
A description of the good sufficient to identify it, plus its HS classification to the six-digit level
The specific origin criteria the good satisfies
A blanket period, if the certification covers multiple shipments of identical goods over up to 12 months
A signed and dated statement that the goods qualify as originating and that the certifier takes responsibility for the claim

An exporter completing the certification does not have to independently verify every production detail. The agreement allows the exporter to reasonably rely on the producer’s written representation that the good is originating. The importer, though, must have the certification in hand when claiming preferential treatment at the border and must be prepared to hand it over to CBP on request.¹⁰

Recordkeeping

Importers must keep all documentation supporting a USMCA preferential tariff claim, including the certification. Exporters and producers who sign a certification or provide a written representation that goods are originating must also keep supporting records. The retention period is generally five years from the date of entry for import records, or five years from the date the record was created.¹²

The records that matter are the ordinary ones a business already keeps: purchase orders, invoices, production records, cost accounting worksheets, inventory tracking, and the certifications themselves. No USMCA-specific format is required, but the records must be enough to prove the good met the applicable rule of origin at the time of importation.

Verification by CBP

CBP can verify any preferential tariff claim, and verification is common for high-value or high-risk entries. Verification takes one of three forms: a written request or questionnaire sent to the importer, exporter, or producer; a visit to the exporter’s or producer’s premises to inspect production; or, for textiles, the specialized procedures under Chapter 6.¹³

The timing is tight. Anyone receiving a written request or questionnaire has at least 30 days to respond. An exporter or producer asked to consent to a verification visit gets 30 days to agree or refuse. Refusing a visit, failing to respond, producing insufficient records, or denying access to records the party was required to maintain all lead to the same result: CBP can deny the preferential claim outright.¹⁴

A false or fraudulent certification carries the same criminal, civil, and administrative penalties as any other customs fraud, and someone who acted fraudulently cannot later use a voluntary correction to reduce the penalty.¹⁵

Post-Importation Refunds Within One Year

An importer who paid full duties at entry because no certification was available can file a post-importation claim for a refund within one year of the date of importation. The claim must include a written declaration that the good qualified at the time of import, a copy of the certification of origin, and any other documentation CBP requires. If approved, CBP refunds the excess duties through reliquidation.¹⁶ The one-year deadline is statutory and cannot be extended.¹⁷

If a good is likely to qualify but the production data isn’t gathered yet, track the importation date carefully. Once the window closes, the duties are permanent, even if the good genuinely met the rules of origin all along.

1
USTR. Chapter 4 Rules of Origin – Article 4.2
2
eCFR. 19 CFR Part 182 – United States-Mexico-Canada Agreement
3
eCFR. 19 CFR Part 182, Appendix A – Section 7
4
eCFR. Appendix A to Part 182 – Rules of Origin Regulations, Section 8(6)
5
USTR. Chapter 4 Rules of Origin – Article 4.12
6
International Trade Administration. USMCA Overview
7
USTR. Uniform Regulations Regarding Rules of Origin – Section 9
8
eCFR. 19 CFR Part 182, Appendix A – Sections 14 and 15
9
eCFR. 29 CFR Part 810 – High-Wage Components of the Labor Value Content
10
eCFR. 19 CFR 182.12 – Certification of Origin
11
USTR.gov. Chapter 5 Origin Procedures – Annex 5-A
12
eCFR. 19 CFR Part 163 – Recordkeeping
13
USTR.gov. Chapter 5 Origin Procedures – Article 5.9
14
USTR.gov. Chapter 5 Origin Procedures – Articles 5.9 and 5.10
15
eCFR. 19 CFR Part 182 Subpart K – Penalties
16
eCFR. 19 CFR Part 182 Subpart D – Post-Importation Duty Refund Claims
17
Office of the Law Revision Counsel. 19 USC 1520 – Refunds and Errors