CUSMA (Canada-United States-Mexico Agreement) is the free trade agreement governing commerce between Canada, the US, and Mexico that replaced NAFTA in July 2020. It defines tariff treatment, rules of origin, and market access rules for goods moving between the three countries.
If you're a DTC brand sourcing from Asia and selling into North America, CUSMA probably isn't on your radar — and that's the point. CUSMA only applies to goods that originate in Canada, the US, or Mexico. The moment your products are manufactured in Asia, CUSMA's preferential tariff treatment doesn't apply, and you're back in standard tariff territory. But understanding what CUSMA is, what it covers, and where its limits sit matters for any brand thinking about nearshoring, expanding into Canadian or Mexican markets, or evaluating whether reshoring is actually a viable path forward.
CUSMA (called USMCA in the US and T-MEC in Mexico) entered into force on July 1, 2020, replacing the North American Free Trade Agreement (NAFTA) that had been in place since 1994. The agreement covers everything from automotive content rules to digital trade to labor protections — but for Ecommerce operators, the most relevant pieces are the rules of origin, the de minimis thresholds, and the tariff treatment of qualifying goods.
CUSMA is a comprehensive trade agreement that governs how goods, services, and investment flow between Canada, the US, and Mexico. The core mechanic is straightforward: goods that qualify as "originating" under the agreement's rules can move between the three countries with preferential tariff treatment, often duty-free.
The agreement covers:
For DTC brands, the practical impact comes down to one question: does your product qualify as originating under CUSMA?
CUSMA's preferential tariff treatment isn't automatic for anything shipped between Canada, the US, and Mexico. Goods must meet the agreement's rules of origin, which determine how much of the product was actually made in North America.
There are two main paths to qualification:
This is where most Ecommerce brands hit a wall. If you're manufacturing in Asia, your product doesn't originate under CUSMA — full stop. Importing finished goods into Mexico and immediately re-exporting them to the US doesn't qualify either. You need actual production or substantial transformation inside a CUSMA country.
To claim preferential treatment under CUSMA, you need a certification of origin. Unlike NAFTA's prescribed certificate form, CUSMA allows a more flexible certification that can be completed by the exporter, producer, or importer, and included on the commercial invoice or as a separate document.
The certification must include nine specific data elements, including identification of the certifier, exporter, producer, and importer, along with a description of the goods, the relevant HS classification, and the origin criterion being claimed. Missing or incorrect documentation means your goods don't get the preferential rate — they get the standard most-favored-nation tariff instead.
If your supply chain runs through China — which it does for most lightweight DTC brands — CUSMA is mostly a non-event. Your goods aren't originating under the agreement, so the preferential tariff treatment doesn't apply. You're paying standard US, Canadian, or Mexican import duties on entry.
This is where the conversation about "nearshoring to Mexico" gets interesting. The pitch is that brands can shift production from China to Mexico, qualify under CUSMA, and avoid Section 301 tariffs on Chinese goods. The reality is more complicated:
For most DTC brands shipping lightweight goods, the math on relocating production to qualify for CUSMA doesn't work — at least not in the timeframes most operators are working with.
Portless powers direct fulfillment from manufacturers in Asia, which means CUSMA's preferential tariff treatment doesn't apply to most of our customers' shipments. What does apply is the broader logic the agreement reflects: cross-border Ecommerce is the dominant trade flow, and tariff policy is being rewritten around it in real time. The brands that win are the ones with supply chains flexible enough to adapt to whatever the next regulatory shift looks like. If you're trying to figure out where your supply chain actually exposes you — and what to do about it — contact us.