USMCA Rules of Origin Explained: Why Canadian Goods Can Still Face a 35% Tariff

A product can be manufactured in Canada and still face a 35% US tariff if it doesn’t meet USMCA’s rules of origin. As of September 2025, the gap between qualifying and non-qualifying Canadian goods is now 35 percentage points — making origin analysis one of the most consequential decisions in customs compliance.

Key takeaways

Non-USMCA Canadian goods face a 35% tariff as of September 2025 — up from 25%.
A product can be “Canada origin” for marking purposes yet still fail to qualify for USMCA preferential (zero-duty) treatment.
USMCA requires meeting a Regional Value Content (RVC) threshold — typically 50–60% for general goods, up to 75% for automotive parts.
Goods made in Vietnam and merely repacked in Canada are neither USMCA-eligible nor Canadian origin.
With every country now carrying its own tariff rate, origin determinations matter across the full supply chain, not just for Canada.

Two separate origin frameworks — and why both matter

General (non-preferential) rules of origin govern marking, anti-dumping, and quota administration. A product originates in the country where it was substantially transformed — changed in form, appearance, nature, or character. Example: ingredients sourced from four countries are manufactured into cookies in a fifth country; the cookies are a product of that fifth country. Simple reboxing or minor assembly does not qualify.

Preferential rules of origin (USMCA) add a second layer. Even if a product is substantially transformed in Canada, it must also meet a Regional Value Content (RVC) threshold to qualify for USMCA’s zero-duty rate. For most goods, RVC ranges from 50% to 60% depending on the calculation method used. Automotive parts face roughly 75% RVC. Each HTS code has its own specific requirement — research at the line level is essential, ideally with a trade attorney. This intersects with other valuation tools; our post on the First Sale Rule covers another way to manage customs value alongside origin planning.

Why USMCA claims suddenly matter so much

Before the current tariff environment, USMCA was largely an afterthought. Unlike NAFTA, USMCA doesn’t even require a certificate of origin — and when MFN duties were near zero, most shippers simply paid the standard rate without claiming preferential treatment. That calculus has reversed completely. Claiming USMCA now means the difference between 0% and 35%, and a claim made without adequate RVC documentation creates significant exposure.

The broader implication extends beyond Canada. Now that virtually every country carries its own reciprocal tariff rate, any product that crosses multiple borders raises an origin question. Commerce Secretary Lutnick has signaled RVC-style logic may expand: “If it actually has like significant content, like 30% from any other country, then it should be taxed at that other country’s tariff.” That framing mirrors preferential-origin language and points toward where policy is heading. See the full reciprocal tariff rate list for current rates by country.

A practical example: Vietnam goods assembled in Canada

If goods are made in Vietnam (20% reciprocal) and assembled in Canada (35% for non-USMCA), the level of Canadian assembly determines which tariff applies. If the Canadian work rises to substantial transformation, the goods become Canadian origin — and you’d owe 35% instead of 20%. In this scenario, keeping the transformation insubstantial preserves the lower Vietnam rate. For importers exploring Canada operations as a tariff strategy, it’s worth reading what it actually takes to legitimately qualify under USMCA.

What to do now

Run an RVC analysis at the HTS-code level for every Canadian product you currently import.
Obtain supplier documentation that supports the RVC calculation — the stakes are high enough that undocumented claims create real exposure.
For goods transiting Canada from third countries, map transformation steps to determine which origin applies and which tariff results.
Audit HTS codes at least every six months; codes change and new tariff lists expand regularly.

Frequently asked questions

Can a product be “Made in Canada” and still owe the 35% tariff?

Yes. If it qualifies as Canadian origin under general rules but fails USMCA’s RVC threshold, it is assessed the 35% non-USMCA rate — not the preferential zero rate.

What is Regional Value Content (RVC)?

RVC is the percentage of a product’s value that must originate within the USMCA region (US, Canada, Mexico). Thresholds vary by HTS code — generally 50–60% for most goods, around 75% for automotive parts. The calculation uses either the transaction value or net cost method.

Does USMCA require a certificate of origin?

No. Unlike NAFTA, USMCA does not require a formal certificate of origin. However, the importer must be able to substantiate the claim with RVC documentation. With 35% now at stake, that documentation is critical.

Are goods repacked in Canada considered Canadian origin?

No. Goods made elsewhere and merely repacked in Canada retain the origin of the country where they were substantially transformed — and they are not USMCA-eligible.

How do reciprocal tariffs interact with USMCA?

Goods that properly qualify for USMCA preferential treatment are not subject to the 35% non-USMCA rate. This makes the origin determination the most consequential customs decision for most Canadian-sourced products right now.