Since July 2020, CUSMA — known as USMCA in the United States — has governed North American trade, and for Canadian importers its core promise is simple: qualifying goods from the U.S. and Mexico enter duty-free. The catch is equally simple, and it costs importers real money every day: the preference is claimed, not automatic.
Every tariff item carries a Most-Favoured-Nation duty rate that applies by default to imports from almost anywhere. CUSMA replaces it with a preferential rate — usually zero — only when two things are true: the goods qualify under the rules of origin, and the claim is actually made on the entry. If your broker files at MFN because no certification is on hand, you pay the default rate on fully qualifying goods, and nobody sends you a note about it.
Origin under CUSMA is a legal analysis, not a label. Goods qualify in one of three broad ways: they are wholly obtained in North America; non-originating inputs undergo the product-specific tariff-shift transformation set out for that HS code; or the product meets a regional value content threshold. A product assembled in the U.S. from Asian components may qualify — or may not — depending entirely on its specific rule. Assuming origin from the shipping address is the most common and the most expensive CUSMA mistake we see.
Product-specific rules of origin are written per tariff classification. Misclassify the product and you are reading the wrong rule — which means even a careful origin analysis can be built on sand. Classification and origin are two halves of one file; see our HS code classification service for the first half.
CUSMA abolished the prescribed certificate form. A valid certification is simply a document — on the invoice or standalone — containing nine required data elements: who is certifying (importer, exporter or producer); the certifier's, exporter's, producer's and importer's details; a description of the goods sufficient to identify them; their HS classification; the origin criterion under which they qualify; a blanket period if the certification covers multiple shipments; and an authorized signature, date, and the required certification statement. Any of the three parties in the chain can complete it — which is flexibility, and also a reason errors creep in.
Commercial shipments valued under CAD $3,300 do not require a formal certification — a practical relief for samples and small orders. The goods must still genuinely qualify; the paperwork threshold changes, the origin test does not.
CUSMA also raised Canada's de minimis thresholds for courier shipments from the U.S. and Mexico: no duties or taxes under CAD $40, and no duties up to CAD $150. For e-commerce importers this quietly rewrites the economics of small parcels — our e-commerce customs guide works through the numbers.
Missed claims are recoverable: importers generally have up to four years from accounting to request a refund of duties on goods that qualified all along. If you have been importing U.S.-origin goods at MFN rates, a review of past entries is often worth real money.
Every preference you claim must survive an origin verification, and CBSA runs them just as it runs classification audits — see what a trade compliance audit involves. Keep certifications and the supporting rules-of-origin analysis for six years. Make sure the HS code on the certification matches the code on the entry — a mismatch can invalidate an otherwise honest claim. And when a supplier hands you a certification, read it: a document missing required elements protects no one.
Claiming because the supplier is American; not claiming because nobody asked for a certification; certifications missing data elements or signed by someone without knowledge of the goods; HS mismatches between certification and entry; and treating a 2021 origin analysis as permanent while the product's inputs quietly changed. Every one of these is preventable with a process — none is preventable with luck.
Get your products assessed for CUSMA eligibility — or your past entries reviewed for refunds. The analysis usually pays for itself on the first container.