TRADE AGREEMENTS | 2026-11-02

USMCA Regional Value Content: How California Importers Qualify Goods for Duty-Free Origin

Preferential duty-free treatment under the USMCA turns on rules of origin. For many goods, that means passing a regional value content test — and backing it with a certification you can defend on audit.

When the United States-Mexico-Canada Agreement replaced NAFTA on July 1, 2020, it kept a familiar bargain: goods that genuinely originate in North America move duty-free, and goods that do not pay the ordinary tariff. The hard part has always been proving that a good originates. For a large share of

Duty-free treatment under the USMCA is not automatic. It is a claim the importer makes, on penalty of liability if it is wrong, that a good satisfies the agreement’s rules of origin. For thousands of tariff classifications, those rules require a regional value content calculation — a demonstration that a sufficient percentage of the good’s value is North American. The calculation is codified in U.S. law through the USMCA Implementation Act and the Customs regulations at 19 C.F.R. Part 182, with the operative rules of origin set out in General Note 11, HTSUS. This guide walks through the methods, the thresholds, and the records a California importer needs to make an RVC claim that will survive a Customs verification.

Why Origin, Not Shipment, Decides the Tariff

A common and expensive misunderstanding is that a good qualifies for USMCA treatment simply because it ships from Mexico or Canada. It does not. Where a good is shipped from says nothing about where it originates. A product assembled in Mexico from predominantly Asian components may fail the rules of origin entirely, even though every box crosses the southern border. Origin is a legal conclusion about the good’s production, not a fact about its last port of lading.

The USMCA sets out, in Chapter 4 and its product-specific annex, several ways a good can originate. A good can be wholly obtained in the region (grown, mined, or harvested there); it can be produced entirely from originating materials; or — most commonly for manufactured goods — it can satisfy a product-specific rule of origin keyed to its tariff classification. Those product-specific rules take two basic forms: a tariff shift requirement, a regional value content requirement, or a combination of the two. Understanding which rule applies to a given Harmonized Tariff Schedule classification is the necessary first step before any RVC math is done.

The Tariff Shift Rule and Where RVC Fits

A tariff shift rule asks whether the non-originating materials used in production were transformed enough, as measured by a change in tariff classification, to be treated as North American. If a producer in Canada imports components classified in one heading and uses them to make a finished good classified in a different heading, the good may qualify through the tariff shift alone — no value calculation required. Tariff shift rules are attractive precisely because they avoid the accounting burden of RVC.

But many product-specific rules do not stop at a tariff shift. They require a tariff shift and a minimum regional value content, or they offer RVC as an alternative path when a good cannot meet the tariff shift because a key non-originating input shares the finished good’s classification. In those situations, the RVC calculation is unavoidable, and the importer must choose a calculation method and document it.

The Two RVC Methods: Transaction Value and Net Cost

The USMCA provides two principal methods for calculating regional value content, and the choice between them has real consequences. Under the transaction value method, RVC is calculated as the transaction value of the good, less the value of non-originating materials, divided by the transaction value, expressed as a percentage. Transaction value is generally the price paid or payable for the good, and this method typically requires a higher threshold — commonly 60 percent — because it is calculated on the full selling price.

Under the net cost method, RVC is calculated as the net cost of the good, less the value of non-originating materials, divided by the net cost. Net cost is the total cost of the good minus excluded costs such as sales promotion, royalties, shipping, and non-allowable interest. Because net cost strips out those elements, the net cost method typically carries a lower threshold — commonly 50 percent — and is required outright for certain goods, most notably in the automotive sector, where the net cost method is mandatory. CBP’s own guidance confirms that producers may generally elect the transaction value method where it is permitted, but must use net cost in the circumstances the agreement specifies.

The practical lesson is that a good can fail under one method and pass under the other. A producer whose selling price is inflated by marketing and royalty costs may fall short under transaction value yet comfortably clear the net cost threshold once those costs are excluded. Choosing the method is therefore a substantive origin decision, not a clerical one, and it should be made with the calculation in hand rather than by default.

De Minimis and Accumulation

Two further rules frequently rescue a claim that would otherwise fail. The de minimis rule allows a good to qualify even if certain non-originating materials do not undergo the required tariff shift, so long as the value of those materials does not exceed a small percentage — generally ten percent — of the transaction value or total cost of the good. De minimis is a forgiving provision, but it is not unlimited, and several product categories carry their own de minimis rules or exclusions that must be checked against the specific classification.

The accumulation principle lets producers treat originating materials and production performed in any USMCA country as if they were performed in the country where the final good is produced. Accumulation allows a Mexican assembler to count the value added by a Canadian component supplier toward the regional total, reflecting the integrated nature of North American supply chains. Used together, de minimis and accumulation can move a borderline good across the qualifying line — but only if the supporting records exist to prove each input’s origin and value.

The Certification of Origin and Who Is Responsible

Under the USMCA, there is no prescribed government form for claiming origin. Instead, a claim is supported by a certification of origin containing a set of required data elements — the certifier, exporter, producer, importer, a description and tariff classification of the good, the origin criterion, and a blanket period if applicable. Critically, the certification may be completed by the importer, the exporter, or the producer. This flexibility is a double-edged sword: an importer who certifies origin takes on direct responsibility for a conclusion that may depend on production facts only the foreign producer can see.

That allocation of responsibility is the heart of the compliance risk. The importer of record makes the duty-free claim on the entry and is liable if it is wrong, regardless of who prepared the certification. An importer relying on a producer’s certification should obtain and retain the supporting records behind it — bills of materials, supplier origin declarations, and the RVC worksheets — because when CBP verifies the claim, it is the importer who must produce them.

Verification, Recordkeeping, and the Cost of Getting It Wrong

CBP verifies USMCA claims through written requests for information, questionnaires, and in some cases visits to the exporter or producer. When a verification finds that a good did not qualify, the consequence is retroactive: the entries are reliquidated at the ordinary tariff rate, and the importer owes the duties that the preference avoided, potentially with interest. If the record shows the claim was made without reasonable care, the exposure can extend to penalties under 19 U.S.C. § 1592, which reaches material false statements and omissions on entry.

Recordkeeping is therefore not an afterthought. USMCA claimants must retain the records supporting a certification for five years, and those records must be sufficient to reconstruct the RVC calculation — not merely to assert its result. An importer who can show the method chosen, the values of originating and non-originating materials, the exclusions taken for net cost, and the origin evidence for each counted input is in a far stronger position than one holding only a signed certification and a confident assumption. The time to build that file is before entry, not after a verification letter arrives.

Practical Steps for California Importers

Qualifying a product under the USMCA is a disciplined, repeatable process. First, classify the good correctly under the HTSUS, because the product-specific rule of origin is keyed to that classification. Second, read the rule in General Note 11 to see whether it requires a tariff shift, an RVC calculation, or both. Third, if RVC applies, run both methods where permitted and choose the one the good can meet. Fourth, document everything — the bill of materials, each input’s origin and value, the exclusions, and the final calculation. Fifth, support the certification with that file and keep it for the full retention period. A California importer that follows this sequence turns a duty-free claim from a hope into a defensible position.

Sector-Specific Rules and the Automotive Example

The USMCA’s rules of origin are not uniform across all goods. Several sectors carry specialized rules that go beyond the general RVC framework, and the automotive sector is the clearest example of how demanding those rules can be. For passenger vehicles and light trucks, the agreement requires a high regional value content calculated under the net cost method, and it layers on additional requirements that have no counterpart in ordinary manufacturing: a labor value content requirement tied to production performed at a certain wage level, and separate steel and aluminum purchasing requirements. A vehicle can meet the headline RVC percentage and still fail to qualify because it misses one of these supplemental tests.

The automotive rules illustrate a principle that applies across sectors: the RVC percentage is often only part of the origin analysis. Textiles and apparel, for instance, are governed by yarn-forward and fiber rules that track where each stage of production occurred, and certain chemical and agricultural products carry their own specialized provisions. A California importer must read the specific rule for its product in General Note 11, HTSUS, rather than assuming that clearing a generic value threshold is enough. The rule for the exact classification controls, and a confident reading of the wrong rule is one of the most common sources of failed claims.

The practical takeaway is that qualification analysis should be done product by product, by someone who reads the actual rule text. A company importing a range of goods cannot assume that because one product line qualifies, a related line does too. Each classification has its own rule, and the supplemental sector requirements can defeat a claim that looks solid on the RVC number alone.

Common RVC Mistakes and How to Avoid Them

Experience with Customs verifications reveals a recurring set of errors. The first is valuing non-originating materials incorrectly — understating them, or failing to capture all of them, which inflates the RVC percentage and produces a claim that collapses under scrutiny. Every non-originating input, including those buried in sub-assemblies, must be identified and valued. The second is method confusion: applying the transaction value threshold while actually calculating on a net-cost basis, or vice versa. The method and its threshold must match, and the choice must be documented.

A third frequent error is treating a supplier’s assertion of origin as proof. A component supplier’s statement that its part is USMCA-originating is a starting point, not a substitute for the origin evidence behind it. If the finished-good producer counts that part as originating and a verification later shows it was not, the RVC calculation fails and the preference is lost. Prudent producers obtain supplier origin declarations supported by the underlying facts, and they re-confirm them when supply chains shift. A fourth error is letting the file go stale — qualifying a product once and never revisiting it, even as sourcing changes. Origin is only as current as the bill of materials behind it.

Avoiding these mistakes is a matter of discipline rather than genius. Capture every non-originating input, match the method to its threshold, demand real origin evidence from suppliers, and refresh the analysis when the supply chain changes. A company that builds this discipline into its import compliance program turns USMCA qualification into a repeatable, auditable process rather than a hopeful assertion that unravels when CBP asks for proof.

Frequently Asked Questions

Does shipping from Mexico or Canada make a good USMCA-originating?

No. Where a good ships from has no bearing on origin. A good qualifies only if it satisfies the USMCA rules of origin — being wholly obtained, produced entirely from originating materials, or meeting the product-specific rule, which often requires a tariff shift or a regional value content calculation.

What is regional value content?

Regional value content is a percentage test that measures how much of a good’s value is North American. It is calculated by subtracting the value of non-originating materials from either the transaction value or the net cost of the good, then dividing by that same base and expressing the result as a percentage.

What is the difference between the transaction value and net cost methods?

The transaction value method uses the good’s selling price and generally requires a higher threshold, commonly 60 percent. The net cost method uses total cost minus excluded items such as marketing, royalties, and shipping, and generally requires a lower threshold, commonly 50 percent. Net cost is mandatory for certain goods, including most automotive products.

Can a good fail one RVC method and pass the other?

Yes. Because the two methods use different bases and thresholds, a good burdened with high marketing or royalty costs may fail under transaction value but qualify under net cost once those costs are excluded. Where both methods are permitted, running both before choosing is the prudent practice.

What is the de minimis rule?

De minimis allows a good to qualify even if certain non-originating materials do not undergo the required tariff shift, provided the value of those materials does not exceed a small percentage — generally ten percent — of the good’s value. Several product categories carry their own de minimis rules that must be checked.

Who can complete a USMCA certification of origin?

The USMCA has no government form. A certification containing the required data elements may be completed by the importer, the exporter, or the producer. An importer who certifies origin takes on direct responsibility for the claim, even where the underlying facts come from a foreign producer.

What happens if Customs finds a good did not qualify?

The entries are reliquidated at the ordinary duty rate and the importer owes the avoided duties, potentially with interest. If the claim was made without reasonable care, the importer may also face penalties under 19 U.S.C. § 1592 for material false statements on entry.

How long must USMCA records be kept?

Records supporting a USMCA claim, including the certification and the data behind the RVC calculation, must be retained for five years. Those records should be sufficient to reconstruct the calculation, not merely to state its result.

Related Guides

• International Trade & Customs Law
• First Sale Valuation for California Importers
• Deemed Liquidation and Refund Suspension

Speak With a California Customs and Trade Attorney

If your company claims USMCA duty-free treatment, the certification is only as strong as the regional value content analysis behind it. Trembach Law Firm helps California importers classify goods, run the correct RVC method, build defensible origin files, and respond to CBP verifications. Call (213) 645-2246 to discuss your products and your current documentation. Anatolii Trembach holds an LL.M. and is admitted to the California Bar.

This article is for general informational purposes only and does not constitute legal advice. Rules of origin and tariff classifications are fact-specific; consult a qualified attorney about your particular goods and transactions.

Contact Trembach Law Firm at (818) 514-7680 for a confidential consultation.

Trembach Law Firm | 27001 Agoura Road, Suite 350, Calabasas, CA 91301