The Promise and the Fine Print

The United States-Mexico-Canada Agreement, which replaced NAFTA in July 2020, offers significant duty savings for goods that qualify as originating within North America. For importers sourcing from Mexico, USMCA compliance can mean the difference between a 0% and a 5 to 25% duty rate on a wide range of product categories.

But qualification is not automatic. USMCA has specific rules of origin, documentation requirements, and record-keeping obligations that importers must satisfy before claiming preferential treatment. Getting it wrong exposes you to duty recovery, penalties, and CBP audit risk.

What Rules of Origin Actually Means

Rules of origin determine whether a product qualifies as originating in a USMCA country for preferential tariff purposes. There are several methods:

Wholly obtained or produced — the simplest case. Agricultural goods grown entirely in Mexico automatically qualify.

Tariff classification change — a product is made from non-originating materials, but the manufacturing process changes the product's HS tariff classification at the required level. The specific rule varies by product category and is defined in the USMCA Annex 4-B.

Regional Value Content — a percentage of the product's value must originate within the USMCA region. The required threshold and calculation method depend on the product.

Specific process rules — certain industries including automotive, textiles, and chemicals have additional requirements beyond standard RVC or tariff shift rules.

The Documentation Requirement

To claim USMCA preference, the importer must have a valid certification of origin at the time of import. Unlike NAFTA, USMCA does not require a specific form — any document containing the required data elements is acceptable.

The certification can be completed by the exporter, producer, or importer — but whoever certifies it is responsible for its accuracy. Records must be kept for five years from the date of import.

What Can Go Wrong

CBP audits USMCA claims. Common problems include suppliers who certify origin without fully tracing their own material inputs, HS code misclassification, missing or defective certifications, and post-entry corrections when importers discover goods did not actually qualify.

If CBP determines a claim was invalid, they can recover the duties owed plus interest. Penalty exposure depends on whether the error was clerical, negligent, or fraudulent.

Frequently Asked Questions

Does every product from Mexico automatically qualify for USMCA?

No. Only goods that meet the specific rules of origin for their tariff classification, and for which a valid certification exists, qualify for preferential duty rates under USMCA.

Who is responsible for USMCA compliance — the importer or the exporter?

Both parties share responsibility. The exporter or producer certifies origin; the importer claims preference and must retain the certification. If CBP challenges the claim, the importer is the liable party in the US.

How do I know if my supplier's USMCA certification is valid?

Request that your supplier document their origin determination, including how they traced material inputs and which rule of origin applies. A certification without supporting analysis carries audit risk.

What happens if CBP determines my USMCA claim was invalid?

CBP can recover the duties that should have been paid, plus interest. Prior disclosure before CBP initiates an audit significantly reduces penalty exposure.

Open Americas includes trade compliance tools on every order — including USMCA origin screening and documentation support — so buyers sourcing from Mexico and Canada can claim duty savings without taking on compliance risk they are not equipped to manage alone.