CUSMA/USMCA Explained: Does Your Product Qualify for Duty-Free Treatment?
Shipping between the US, Canada, and Mexico? Your product might cross duty-free — but "might" is doing a lot of work there. You need to actually qualify, actually certify it, and actually claim the preference at the border. Most small importers skip at least one of those steps.
In this guide
What is CUSMA/USMCA?
CUSMA — the Canada-United States-Mexico Agreement — is the free trade deal between the three North American countries. It replaced NAFTA and kicked in on July 1, 2020.
Three countries, three names:
| Country | Official Name | Abbreviation |
|---|---|---|
| 🇨🇦 Canada | Canada-United States-Mexico Agreement | CUSMA |
| 🇺🇸 United States | United States-Mexico-Canada Agreement | USMCA |
| 🇲🇽 Mexico | Tratado entre México, Estados Unidos y Canadá | T-MEC |
Same deal, different names. Don't let it confuse you.
The core benefit: goods that qualify as "originating" under the agreement can cross duty-free — or at a much lower rate. For ecommerce sellers and small importers, that's often the difference between a workable margin and none at all.
In Canada, qualifying US shipments get UST (United States Tariff) treatment. From Mexico, it's MXT (Mexico Tariff). Both are in the CBSA's tariff schedule and both come out to 0% duty for most goods.
Source: Canada Border Services Agency (CBSA) — 2026 Customs Tariff
Does CUSMA Still Apply in 2026?
Yes. Nobody pulled out. The deal's still running.
CUSMA hasn't been suspended, renegotiated, or withdrawn. Qualifying goods between the US, Canada, and Mexico still get duty-free treatment in 2026.
But — and this trips up a lot of importers — not every duty between these countries is a CUSMA duty. Other tariff regimes can stack on top, even for goods that qualify under CUSMA.
⚠ The Section 232 exception: Steel, aluminum, auto parts, and certain other products may face Section 232 tariffs even if they're CUSMA-originating. These are US national security tariffs and they don't disappear just because your product qualifies under CUSMA. Always check both your CUSMA eligibility and whether Section 232 applies separately.
For most importers this isn't an issue. You're shipping consumer goods, apparel, food, electronics — CUSMA applies, and if your product qualifies, it crosses duty-free. Section 232 is mostly a problem for steel, aluminum, and automotive companies.
Three Ways Your Product Qualifies
The core question: is your product "originating" under CUSMA? Three ways to get there. You need at least one.
1. Wholly Obtained or Produced
Straightforward. Your product is entirely grown, extracted, or produced within the CUSMA region (US, Canada, and/or Mexico). No outside inputs.
This covers:
- Agricultural products grown in the region (Canadian wheat, Mexican avocados, US corn)
- Minerals and raw materials extracted here
- Animals born and raised in the region
- Fish from the territorial waters of the three countries
- Goods made entirely from wholly-obtained materials
Shipping Quebec maple syrup to the US? Done. Wholly obtained in Canada, qualifies automatically.
2. Tariff Classification Change (Substantial Transformation)
Your product uses some non-originating inputs — materials from outside the US, Canada, or Mexico — but manufacturing here substantially transformed them. Meaning: the production process changed the product's HS tariff classification at the chapter, heading, or subheading level.
Example: You import plastic pellets from South Korea into a Canadian facility and injection-mold them into a finished consumer product. The pellets are HS Chapter 39; the finished product is Chapter 84. That shift may satisfy the tariff shift rule, making the final product CUSMA-originating.
The specific rules vary by product — they're in CUSMA Annex 4-B. Look up your HS code to be sure.
3. Regional Value Content (RVC)
Can't satisfy the tariff shift test? You might still qualify if enough of the product's value came from within the CUSMA region.
RVC thresholds vary by product but typically run 40% to 60%. Two ways to calculate it:
- Transaction Value Method: Non-originating materials can't exceed a set percentage of transaction value
- Net Cost Method: Originating content must hit a minimum share of net cost
Automotive is its own world. Vehicles need 75% regional value content, and 40–45% of vehicle content must come from workers earning at least USD $16/hour. That labor value content rule is brand new to CUSMA — NAFTA never had it.
✅ De minimis relief: If your product fails the tariff shift test due to a small amount of non-originating content, you may still qualify under the de minimis rule. Products can contain up to 10% non-originating content by value (calculated on the transaction value or total cost) and still be treated as originating — as long as the non-originating materials don't prevent the product from meeting other applicable rules. For textiles and apparel, the threshold is lower: 7% by weight.
How to Certify Origin
Qualifying is step one. You also need to certify it properly so the customs authority on the other end actually applies the preferential rate.
Good news: there's no official form under CUSMA. NAFTA had that government CO form everyone dreaded. CUSMA dropped it. Any document works as long as it includes the required data elements.
Who Can Certify?
Three parties can do it:
- The importer — based on their knowledge of the product's origin
- The exporter — based on their knowledge of the product or a producer's certification
- The producer — the manufacturer who has the best knowledge of inputs and transformation
Required Data Elements
Whatever you produce needs all of this:
| # | Required Element | Notes |
|---|---|---|
| 1 | Certifier name, address, telephone, email | Must identify who is certifying (importer, exporter, or producer) |
| 2 | Exporter name and address | If certifier is not the exporter |
| 3 | Producer name and address | If known and different from exporter |
| 4 | Importer name and address | If known |
| 5 | Description of goods | Sufficient to identify the product |
| 6 | HS tariff classification | 6-digit minimum |
| 7 | Origin criterion | Which rule applies (A = wholly obtained, B = tariff shift, C = RVC, D = combination) |
| 8 | Blanket period | If covering multiple shipments (up to 12 months) |
| 9 | Authorized signature and date | Required |
| 10 | Certifier statement | Must attest the information is accurate and agrees to maintain records |
You don't need a standalone document — stick it in your commercial invoice if you want. CBSA and CBP both accept any format. They just need all the data elements present.
Source: CBSA — CUSMA Certification of Origin
Know your exact duty before you ship
Our free duty calculator covers Canada, the US, and Mexico — with CUSMA treatment automatically factored in for qualifying goods.
Try the Duty Calculator →Common Mistakes That Cost Importers Money
1. Assuming CUSMA Applies Without Checking
Products assembled in Canada from Asian components may or may not qualify. The origin rules are product-specific. You need to actually run your HS code against the tariff shift or RVC requirements — don't assume it works just because your product was assembled here.
2. Missing the Certification on Import
Your product can be 100% CUSMA-originating and you still won't get preferential treatment if you don't claim it and provide the certification. If you've been importing from a US or Mexican supplier for years and nobody's ever handed you a CUSMA certification, you've probably been overpaying duties for years. That money is gone.
3. Shopify and Automated Label Systems Not Applying the Exemption
This is real, and most merchants never catch it. A Canadian merchant posted to Reddit about getting hit with $7,500 in unexpected duties on goods imported from a US supplier — goods that were genuinely CUSMA-eligible. The problem: their Shopify shipping labels and customs forms never claimed CUSMA treatment or included the certification data. The shipments cleared like no trade agreement existed.
Shopify's customs tools are built for speed, not compliance accuracy. If you haven't explicitly configured your declarations to claim CUSMA/USMCA treatment and attach a valid origin certification, you're paying full MFN duties on goods that should be crossing duty-free.
⚠ Action item for Shopify merchants: Check the customs documentation attached to your last 3-5 cross-border shipments. Does it claim CUSMA/USMCA origin? If not, talk to your customs broker about amending recent entries and correcting your process going forward. CBSA allows amendments up to 4 years after the date of accounting.
4. Applying CUSMA to Products With Significant Third-Country Content
"Made in the USA" and "assembled in Canada" don't automatically mean CUSMA-qualifying. If your product's loaded up with Chinese or Southeast Asian inputs, the RVC or tariff shift tests might fail. When you're not sure, request a formal advance ruling from CBSA or CBP before you start claiming the preference. It takes a few weeks but it protects you.
5. No Records to Support the Certification
You sign the certification, you own it. Under CUSMA you need to keep the records — supplier invoices, bills of materials, production records — for a minimum of 5 years in both Canada and the US. If CBSA or CBP audits you and you can't back up your claim, you're on the hook for back duties, interest, and potential penalties.
6. Confusing CUSMA With Section 232 Exemptions
CUSMA eligibility doesn't automatically exempt you from Section 232 tariffs. They're separate regimes. Steel that originates in China and was minimally processed in the US might still face Section 232 — and may not even qualify under CUSMA at all. Don't assume one covers the other.
Frequently Asked Questions
Sources
- CBSA — CUSMA Certification of Origin (Official guidance)
- CBSA — 2026 Customs Tariff — Schedule of Tariff Treatments (UST, MXT)
- Global Affairs Canada — CUSMA Overview
- USTR — United States-Mexico-Canada Agreement (USMCA)
- US CBP — USMCA Implementation
Are you overpaying duties on US or Mexican goods?
Our free duty calculator factors in CUSMA/USMCA treatment automatically. Enter your HS code and see your actual landed cost in seconds.
Calculate Your Duty Free →Disclaimer: This article is for informational purposes only and does not constitute legal or customs advice. Trade agreement rules are complex and product-specific. Always verify your product's eligibility with a licensed customs broker or by requesting a formal advance ruling from CBSA or CBP before claiming preferential tariff treatment. Information accurate as of March 24, 2026.