How to qualify a product for USMCA preferential treatment

The USMCA, called CUSMA in Canada and T-MEC in Mexico, replaced NAFTA in July 2020. Goods that meet its rules of origin are treated as originating in North America and enter with preferential, usually zero, tariffs. Goods that do not must pay the normal MFN tariff, and since March 2025 they can carry more: the IEEPA fentanyl-related duties on Canadian and Mexican goods apply only to goods that do not qualify as USMCA originating, while goods with a supportable origin claim are exempt.

That single fact changed the economics of origin work. A USMCA claim used to save the MFN duty. On sensitive lanes it is now the difference between the normal tariff and the normal tariff plus new surcharges.

The agreement also faces its first scheduled joint review in 2026, six years after entry into force, with a sixteen-year sunset that lands in 2036 unless the parties extend it. The practical consequence: origin determinations are worth re-checking, not filing away.

Every downstream decision hangs on the classification. The product-specific rule of origin is indexed by HS code, so a misclassified product gets the wrong rule, the wrong threshold, and a wrong answer that looks right.

Classify the finished good, not the components, using the general HS interpretation rules, and carry the classification down to the tariff-line level your country requires. When two codes are genuinely arguable, resolve that first, before any RVC math.

Chapter 4 of the agreement sets the general criteria, and an annex holds the product-specific rules of origin, listed by HS code. Each rule belongs to one of two families:

• *Tariff shift: every non-originating input must change to a different HS classification as a result of production. Yarn becomes a finished garment; components become a machine.
• *Regional Value Content: the product must contain at least a set percentage of North American value, tested under the transaction-value or net-cost method.

Where the annex sets no stricter requirement, the standard thresholds are 60 percent under the transaction-value method and 50 percent under the net-cost method. Many chapters set their own numbers, so never assume the default applies. Look up the exact rule for your code, every time.

Under the transaction-value method the formula is RVC = ((TV - VNM) / TV) x 100, where TV is the transaction value of the good and VNM is the value of non-originating materials. The net-cost method has the same shape with net cost in the denominator. The method is not a free choice: some rules mandate one, and the two are not interchangeable.

Worked example. A finished good has a transaction value of 1,000 USD. Its bill of materials contains 350 USD of non-originating materials; everything else counts as originating. RVC = ((1000 - 350) / 1000) x 100 = 65 percent. Against a 60 percent threshold the good qualifies, with five points of headroom.

Two habits keep the math honest. First, an input counts as originating only if it itself qualifies under the rules, not merely because a US, Canadian, or Mexican supplier sold it. Second, track headroom, not just pass or fail: five points of margin survives a supplier price change; half a point does not.

A good that fails its product-specific rule can still qualify under the de minimis exception in Article 4.12 if the value of the non-originating materials that violate the rule is small. For most goods the ceiling is 10 percent of the value of the good, with method-specific rules on how that value is measured.

Because the exact basis differs by method and by rule, treat de minimis as a reason to recompute carefully, not as a free pass. If the numbers sit close to the ceiling, the determination deserves a professional review before anyone certifies it.

Since July 2020 there is no fixed certificate form. A valid certification is any document containing nine required data elements: identification of the certifier, the exporter, the producer, and the importer, a description and HS code of the goods, the origin criterion relied on, the blanket period if one is used, and the authorized signature and date.

• *The importer, exporter, or producer may certify, but whoever certifies must hold records that support the claim.
• *A blanket certification can cover multiple shipments of the same goods for up to 12 months, which is why lapse tracking matters.
• *Supporting records must be kept for at least five years after the relevant entry, per Article 5-C of the agreement and US recordkeeping law (19 U.S.C. 1509).
• *An unsupported claim is penalty exposure, not a paperwork issue: 19 U.S.C. 1592 reaches negligent and fraudulent origin claims, sometimes years after entry.

The agreement contains a scheduled joint review that opens in July 2026, six years after entry into force, where the parties can extend, adjust, or reopen parts of the deal, including rules of origin. Review talk has already touched automotive and other threshold-sensitive chapters.

For practitioners the takeaway is procedural, not political: every determination made today should carry a re-verification date, and any blanket certificate renewed during the review window deserves a fresh rules check rather than a signature-and-file renewal.

• *Classifying the finished good by what it looks like instead of the HS interpretation rules, then applying the wrong product-specific rule.
• *Counting a material as originating because the supplier is American. Origin follows the material, not the invoice address.
• *Mixing transaction-value and net-cost math in one calculation, or applying the standard threshold when the chapter sets a different one.
• *Giving up on a fail without testing de minimis first.
• *Certifying from a spreadsheet nobody can reconstruct. The record, not the signature, is what survives an audit.