USMCA preference is not a shipping fact. Goods do not qualify because they were made in Mexico or shipped from Canada; they qualify because they satisfy a specific rule written for their tariff classification. A product assembled in Monterrey from entirely Asian components is North American in the commercial sense and frequently not originating in the legal one.

The distance between those two ideas is where most denied claims come from. This guide covers the four ways a good can qualify, the two regional value content formulas and when each may be used, the additional requirements that apply to vehicles, and the certification and record-keeping obligations that decide whether a claim survives verification. The framework sits in the agreement’s Chapter 4 and its product-specific rules annex, implemented for US purposes at 19 CFR Part 182.

The Four Ways a Good Qualifies

A good originates if it meets one of the tests in Article 4.2. They are alternatives rather than a sequence, and which one is available depends on what the product-specific rule written for that tariff classification actually says.

Wholly obtained covers goods produced entirely in the territory from local materials: minerals extracted there, plants grown there, animals raised there, and goods made exclusively from them. It is the cleanest path and the least commonly available in manufacturing.

Produced exclusively from originating materials is path (c). It covers goods assembled entirely from inputs that themselves already qualify, which is straightforward on paper and demanding in practice, because originating status has to be established and documented at every tier of the bill of materials.

The tariff shift rule is the workhorse and it sits inside path (b). Non-originating materials must undergo a specified change in tariff classification as a result of production in the territory. The rule might require a change to the heading from any other heading, or to the subheading from any other subheading, and the requirement is set out per classification in Annex 4-B. Substantial transformation is demonstrated by the classification change rather than argued qualitatively.

The fourth path is narrower than it is usually described. Article 4.2(d) covers goods produced entirely in the territory from materials that classify in the same heading or subheading as the good, or that would be classified together under GRI 2(a), at a regional value content of 60% by transaction value or 50% by net cost. It expressly excludes Chapters 61 to 63. It is not a general fallback for goods that fail their tariff shift, and treating it as one is a common source of denied claims.

A point worth being precise about: the ordinary case of a good that fails its tariff shift but meets a value threshold is not a standalone path at all. It lives inside the product-specific rule itself, because a great many rules in Annex 4-B are drafted as a tariff shift or an RVC at the producer’s option, and it is therefore reached through path (b). Reading Article 4.2(d) as a general safety net invites 60/50 claims on goods that do not meet its parts and same-heading conditions.

• (a) Wholly obtained or produced entirely in the territory of one or more Parties.
• (b) Produced entirely in the territory using non-originating materials that satisfy the product-specific rule in Annex 4-B, typically a tariff shift, a regional value content, or a choice between them.
• (c) Produced entirely in the territory exclusively from originating materials.
• (d) The narrow rescue rule: parts in the same subheading or undivided heading, or a good entered unassembled but classified as assembled under GRI 2(a), at 60% transaction value or 50% net cost, excluding Chapters 61 to 63.

The Two Regional Value Content Formulas

USMCA provides two methods for calculating regional value content, and which are available depends on the product-specific rule. Where both are permitted the producer may choose, and the choice is worth making deliberately because they do not produce the same answer.

The transaction value method takes the transaction value of the good less the value of non-originating materials, divided by the transaction value. Two details are routinely dropped: the transaction value is adjusted to exclude any costs incurred in the international shipment of the good, and the value of non-originating materials includes materials of undetermined origin. It is simpler to compute and generally produces a higher percentage, because the denominator includes profit.

The net cost method takes the net cost of the good less the value of non-originating materials, divided by the net cost, with non-originating materials again including those of undetermined origin. Net cost is total cost less sales promotion, marketing, after-sales service, royalties, shipping and packing, and non-allowable interest. It is more burdensome and usually yields a lower figure, which is why it is required rather than chosen where the agreement mandates it. USMCA has exactly these two methods; the focused-value, build-down and build-up formulations belong to other agreements and appear nowhere in Chapter 4.

There is also a de minimis allowance. A good that fails its tariff shift rule can still qualify where the value of the non-originating materials that did not undergo the required change does not exceed a small percentage of the transaction value or total cost, subject to exceptions for certain goods including some agricultural and textile products, which have their own rules.

Vehicles Carry Three Additional Requirements

Automotive origin was the most heavily renegotiated part of the agreement, and passenger vehicles, light trucks and their parts face requirements no other sector does. Meeting the ordinary rule is not sufficient.

The regional value content threshold for passenger vehicles and light trucks is 75% under the net cost method, considerably above the NAFTA level it replaced. Heavy trucks sit on a separate schedule and are currently at 64%, rising to 70% on 1 July 2027. Core parts carry their own thresholds and must themselves originate.

A steel and aluminum purchasing requirement obliges producers to source at least 70% of their steel and aluminum, by value, from North America. This is a purchasing test at the producer level rather than a content test on the individual vehicle, which makes it an annual accounting exercise rather than a per-unit calculation.

Labor Value Content requires that a percentage of the vehicle be produced by workers earning at least a specified hourly wage. The threshold is 40% for passenger vehicles and 45% for both light trucks and heavy trucks. It is the first provision of its kind in a US trade agreement and it is verified against payroll records rather than against a bill of materials.

The practical consequence for anyone importing vehicles or parts is that origin is certified on the strength of documentation held by the producer, not by the importer. An importer claiming preference is relying on records it does not control, and the verification will reach through to them.

Certification: Nine Elements in the Treaty, Twelve in the US Rule

USMCA did away with the prescribed certificate NAFTA used. There is no official form. The certification must contain a set of required data elements and may appear on an invoice or any other document, in any format, provided those elements are present.

The number depends on which instrument you read, and for a US import the answer is twelve. The treaty text lists nine minimum data elements. The US implementing regulation at 19 CFR 182.12(a)(4) enumerates twelve, adding a signer block, a citation to the applicable General Note 11 rule, and the Schedule II certification statement. A certification built to the treaty’s nine and filed on a US entry is short three elements.

The nine treaty elements are the certifier and their role, the certifier’s details, the exporter’s details, the producer’s details, the importer’s details where known, a description and HS classification of the goods to the six-digit level, the origin criterion, the blanket period where the certification covers multiple shipments up to a maximum of twelve months, and an authorised signature with date. Because there is no form to fill in, certifications are frequently produced by someone who has never read the requirement, and one missing element is not a valid claim. The origin criterion and the certification statement are the two most commonly omitted.

Any of the three parties may certify. Importer certification is permitted under USMCA where it was not under NAFTA, and it places the evidentiary burden on the importer. There is also a low-value waiver: for US imports the threshold is $2,500 under 19 CFR 182.14(a)(2), above the treaty’s own US$1,000 floor. Guidance citing $1,000 is describing the treaty minimum rather than the US rule, which is a common published error.

Records, Verification and What Actually Gets Tested

Records must be kept for five years, but the clock starts at different points depending on who holds them, and the distinction is worth stating. An importer keeps records for five years from the date of importation under 19 CFR 182.15(a). An exporter or producer keeps them for five years from the date the certification was completed under 19 CFR 182.21(c)(1). The obligation covers the certification, the bill of materials, supplier declarations, production records and the cost data underlying any regional value content calculation, and it sits on top of the ordinary Part 163 requirements rather than replacing them.

Verification generally starts as a written request for information rather than a visit. CBP asks the importer to substantiate the claim, and the importer has to produce a coherent origin analysis rather than a certificate. Where the goods qualified on a tariff shift, that means classifying every non-originating input and demonstrating the change occurred, which puts the General Rules of Interpretation at the centre of an origin file as much as a duty one. Where they qualified on value content, it means the costing.

Denials cluster around a few recurring failures. A certification with a missing data element. A tariff shift claim where the non-originating input and the finished good sit in the same heading, so no shift occurred. Value content computed on the wrong basis. And origin asserted for goods that were merely assembled from imported parts, where the operations are too minor to satisfy the rule.

The related discipline is knowing that USMCA origin is not the same test as origin for other purposes. A good can be USMCA originating and still carry a different country of origin for marking, and the country of origin determination for those purposes runs on its own rules.

The July 2026 Joint Review Happened, and the Agreement Is Still in Force

USMCA was built with a sixteen-year term and a joint review at the six-year mark. That review took place on 1 July 2026, and the United States declined to extend the Agreement for a further sixteen years.

The phrasing matters because it is being widely misread. USTR’s own language is that the USMCA is not renewed, and that sentence has to be paired with the fact that the Agreement remains fully in force. Declining to extend at the joint review does not terminate anything. It moves the Agreement onto the annual review mechanism in Article 34.7.4, which now runs through 1 July 2036.

Nothing about the rules of origin, the certification requirements or the record-keeping obligations changed as a result. A claim made today is made on exactly the same basis as a claim made in June, and importers who paused origin programmes on the strength of headlines were reacting to a term that was misdescribed rather than to a change in law.

What it does change is planning horizon. Annual reviews introduce a recurring decision point where there previously was none, which is a reason to keep origin documentation current rather than to let it lapse.

Preference Does Not Remove the Sectoral Duties

This is the point that surprises importers most in the current environment. A qualifying USMCA claim eliminates the ordinary duty, the Column 1 General rate. It does not eliminate a Section 232 duty, an antidumping order or a safeguard.

Metals make the interaction concrete, and the relief is narrower than most summaries suggest. Section 232 applies to the full customs value regardless of metal content, with no general USMCA carve-out. A specific exception added on 8 June 2026 lets qualifying USMCA goods in one derivative steel category, mobile industrial equipment and machinery, pay duty on their non-US content with a 15% floor, filed through a two-line entry method. Outside that category a fully originating good still pays the full rate. The mechanics sit alongside the rest of the steel and aluminum tariffs regime.

So the value of a USMCA claim depends on what the base rate would have been. On an apparel line carrying a high ordinary rate the claim is worth real money and worth the compliance investment. On a line already duty free at MFN rate the claim achieves nothing and the record-keeping obligation is pure cost.

There is one place where a USMCA claim is now worth real money on an additional duty rather than only on the base rate. The Section 301 forced-labour action applies 10% to goods of Canada and Mexico, but headings 9903.05.93 and 9903.05.94 provide that the duty shall not apply to goods entered free of duty under USMCA. That is a whole exemption rather than a reduction or a content-proportional carve-out, and it extends to the USMCA provisions of Chapters 98 and 99. The condition is exact, and it is where importers lose the benefit: the exemption attaches to goods actually entered with a USMCA claim that yields a free rate. A good that could have qualified but was not claimed pays the full 10%.

That is the current commercial case for perfecting a claim, and it replaces an argument that no longer exists. The IEEPA duties on Canada and Mexico were terminated on 20 February 2026 by Executive Order 14389, so any guidance describing a USMCA exemption from IEEPA tariffs is describing something that has been gone for six months.

That is the calculation to run before building an origin programme: base rate saved, against the cost of substantiating it for five years. Where the answer is marginal, the sound decision is often not to claim. Where it is large, the programme needs to be built properly, and our trade advisory services team works the bill of materials before the first claim rather than after the first verification letter.

One further point is operationally urgent for Canadian supply chains. A Section 338 action on Canada, reported as 50% and effective from 22 August 2026, carries no USMCA carve-out. A perfect certification does not exempt a covered good. Importers should read that action and its annexes directly rather than assuming preference provides cover, because here it does not.

Frequently Asked Questions