USMCA in Plain English: What Importers and Exporters Need to Know in 2026

Six years after replacing NAFTA, the United States-Mexico-Canada Agreement is still misunderstood by a surprising number of businesses that trade across North American borders.

Some companies are leaving significant duty savings on the table because they don't know their products qualify. Others are claiming USMCA benefits they're not entitled to — and creating serious compliance risk in the process. And many are somewhere in the middle: vaguely aware that USMCA exists, unsure whether it applies to them, and too busy to figure it out.

This guide cuts through the complexity. Here's what USMCA actually means for your business in 2026 — in plain English.

What USMCA Is (and What It Isn't)

USMCA is a trade agreement between the United States, Mexico, and Canada that governs the terms of trade between the three countries. It replaced NAFTA on July 1, 2020, and while it preserved many of NAFTA's core provisions, it introduced significant changes — particularly in automotive manufacturing, digital trade, and labor standards.

For most importers and exporters, the most important thing USMCA does is provide preferential tariff treatment for goods that qualify as originating in North America. In plain terms: if your goods meet the rules of origin, you may be able to import or export them with reduced or zero duties.

What USMCA is not: a blanket exemption from duties for anything that crosses a North American border. The preferential treatment only applies to goods that genuinely originate in North America under the agreement's specific rules — and proving that requires documentation.

The Rules of Origin: The Heart of USMCA

The rules of origin are the criteria that determine whether a product qualifies for USMCA preferential treatment. They're also the most complex part of the agreement — and the part that trips up the most businesses.

There are three main ways a product can qualify as originating under USMCA:

Wholly obtained or produced. Some goods are straightforward: they're entirely produced in North America from North American inputs. Agricultural products grown in the US, Canada, or Mexico, for example, or minerals extracted from North American soil. These goods are wholly obtained and automatically qualify.

Produced entirely from originating materials. If a product is manufactured entirely from materials that themselves qualify as originating under USMCA, the finished product qualifies. This is relatively uncommon for complex manufactured goods, since most supply chains involve at least some non-North American inputs.

Substantial transformation. This is the most common path to USMCA qualification for manufactured goods. A product qualifies if it undergoes sufficient transformation in North America — even if some of its inputs come from outside the region.

The specific transformation required depends on the product. USMCA uses two main tests:

Tariff classification change (TCC). The product's HS tariff classification must change at a specified level as a result of the North American processing. This test is designed to ensure that the transformation is meaningful — not just minor processing or assembly.

Regional value content (RVC). Some products must also meet a minimum regional value content threshold — meaning a specified percentage of the product's value must come from North American inputs. The threshold varies by product and by the calculation method used.

How to Certify Origin Under USMCA

One of the significant changes USMCA made compared to NAFTA is how origin is certified. Under NAFTA, a specific certificate of origin form was required. USMCA eliminated the mandatory form and replaced it with a more flexible certification system.

Under USMCA, a certification of origin can be prepared by the exporter, the producer, or the importer. The certification doesn't have to be on a specific form, but it must include specific data elements required by the agreement — including the certifier's details, a description of the goods and their HS tariff classification, the applicable rule of origin, and a statement that the goods qualify as originating.

The certification can cover a single shipment or multiple shipments of identical goods over a period of up to 12 months.

The importer's responsibility. When you claim USMCA preferential treatment as an importer, you're taking on responsibility for the accuracy of that claim — even if you're relying on a certification from your supplier. If customs authorities determine that your goods don't actually qualify, you can be held liable for the unpaid duties plus interest and penalties.

Record-Keeping Requirements

USMCA requires that all parties involved in a USMCA claim maintain records supporting their origin claims for a minimum of five years from the date of importation.

For importers, this means keeping the certification of origin, any supporting documentation used to verify the certification, and import records including entry documentation.

For exporters and producers, this means keeping records supporting the origin determination — supplier declarations, production records, cost data for RVC calculations — as well as copies of certifications issued.

Customs authorities in all three countries have the right to conduct origin verifications. These verifications can happen years after the original importation. If you can't produce the supporting documentation, you may be required to pay back duties even if your goods actually qualified.

Common USMCA Compliance Mistakes

Assuming NAFTA qualification equals USMCA qualification. USMCA changed the rules of origin for many product categories. If you were qualifying under NAFTA and haven't reviewed your products under USMCA, you may be claiming benefits you're no longer entitled to — or missing benefits you now qualify for.

Relying on supplier certifications without verification. Many importers simply pass along their supplier's certification of origin without understanding the basis for the claim. If the supplier's claim is wrong, the importer can still be held liable. You don't need to audit every supplier, but you should have a process for reviewing and spot-checking certifications.

Using blanket certifications without updating them. A blanket certification covers shipments of identical goods for up to 12 months. But if anything changes — the product's composition, the manufacturing process, the supply chain — the certification may no longer be accurate.

Incorrect HS classification. The rules of origin are tied to HS tariff classifications. If your product is classified incorrectly, you may be applying the wrong rule of origin.

Not claiming USMCA when you should. Many businesses don't claim USMCA preferential treatment for products that actually qualify, simply because they haven't done the analysis. For high-volume importers, this can add up to significant unnecessary costs over time.

Getting USMCA Right: A Practical Approach

For most businesses, getting USMCA right comes down to a few practical steps:

Start with a product-by-product review. Don't assume all your products qualify or don't qualify. Review each product against the applicable rules of origin.

Build a documentation process. Establish a process for collecting, reviewing, and storing origin certifications and supporting documentation.

Train your team. The people who handle your import and export documentation need to understand the basics of USMCA — what it requires, what the risks are, and when to escalate.

Review regularly. USMCA compliance isn't a one-time project. Supply chains change, products change, and regulations change. Build in a regular review — at least annually.

Get expert help when you need it. For high-value products, complex supply chains, or situations where you're uncertain about qualification, the cost of getting expert guidance is almost always less than the cost of getting it wrong.

The Bottom Line

USMCA is a genuine opportunity for businesses trading across North American borders — but only if you understand the rules and document your claims correctly. The businesses that get it right save money, reduce compliance risk, and build supply chains that are more resilient and competitive.

If you're not sure where your business stands on USMCA compliance, or if you want to make sure you're capturing all the duty savings you're entitled to, book a free consultation with DCW Logistics. We'll review your specific situation and give you a clear picture of where you stand and what to do next.