USMCA in 2026: What Every Supply Chain Manager Needs to Know
This article was originally published in Beyond Logistics, TMS, LP's bi-weekly supply chain newsletter. Subscribe at https://shorturl.at/Gcz0x... is now the U.S.'s largest trading partner. Here is how the trade agreement that governs that relationship works — and what happens when it does not.
USMCA (the United States–Mexico–Canada Agreement) governs duty-free trade between the three countries. Companies whose goods qualify under USMCA rules of origin cross the U.S.–Mexico border without paying import tariffs. Companies whose documentation is incomplete, incorrect, or missing face duty assessments that can eliminate the entire cost advantage that motivated their nearshoring strategy. TMS, LP has managed USMCA compliance for cross-border freight in the Texas–Mexico corridor since the agreement replaced NAFTA in 2020 — and before that, under NAFTA, since 2005.
Why 2026 Is a Critical Year for USMCA
Mexico became the United States’ largest trading partner in 2023 — a position it has held into 2026, driven by the largest nearshoring movement in North American supply chain history. Companies that spent the last decade sourcing from Asia are moving manufacturing and distribution operations to Mexico to reduce lead times, lower freight costs, and cut their exposure to geopolitical risk and unpredictable tariff environments.
The companies moving fastest are the ones who understand that nearshoring to Mexico is only financially advantageous if your goods qualify for USMCA preferential treatment. If they do not — or if your documentation does not correctly support the claim that they do — you are shipping across the U.S.–Mexico border and paying tariffs that eliminate your landed cost savings before your product reaches its first customer.
USMCA is not a legal technicality. It is a direct line to your company’s profitability.
The Three Rules That Determine Whether Your Goods Qualify
1. Rules of Origin
USMCA’s rules of origin determine whether a product is considered to originate in the U.S., Mexico, or Canada for purposes of preferential duty treatment. The core requirement: a product must either be wholly produced in the USMCA region, or — if it contains components sourced from outside the region — those components must undergo a substantial transformation during manufacturing within the USMCA territory.
The practical implication for electronics and technology companies: assembling components from China in Mexico does not automatically make your product USMCA-compliant. The transformation those components undergo must meet the specific product-by-product requirements set out in USMCA’s Annex 4-B. Getting this wrong is the most common and most expensive compliance mistake TMS sees in cross-border programs.
2. Regional Value Content (RVC)
Many product categories qualify for USMCA benefits if a specified percentage of their value originates within the U.S.–Mexico–Canada region. Thresholds typically range from 60% to 75%, depending on the calculation method and the product type. Automotive goods face additional requirements under the Labor Value Content (LVC) rules introduced in USMCA that did not exist under NAFTA.
Calculating RVC correctly requires accurate cost data, consistent recordkeeping, and an understanding of which components count as originating and which do not. Companies that estimate RVC rather than calculate it precisely are exposing themselves to audit liability.
3. Certification of Origin
Under USMCA, the exporter, producer, or importer can certify origin — unlike NAFTA, which required a specific government form. This flexibility is convenient. It is also a compliance trap. A Certification of Origin under USMCA must contain nine specific data elements to be valid. An incomplete or incorrectly structured certification can be rejected by U.S. Customs at the border, triggering a duty assessment on a shipment that genuinely qualifies for preferential treatment — simply because the paperwork was wrong.
How TMS Manages This for Every Cross-Border Shipment
TMS, LP’s in-house customs brokerage team handles USMCA compliance as a core part of every cross-border shipment we manage — not as an add-on, and not as something we outsource to a third broker. Our upstream methodology means we validate documentation before freight reaches the border, not after a hold is issued.
For every eligible shipment, our team verifies rules-of-origin qualification based on the product’s manufacturing origin and component sourcing, prepares and validates the Certification of Origin with all nine required data elements, ensures HTS code classification is consistent with the USMCA eligibility claim, and coordinates with our Mexico City partner network for southbound filings through Grupo Escalante.
We maintain all documentation for the five-year retention period USMCA requires.
The Bottom Line for Supply Chain Leaders
USMCA is a competitive advantage for companies that manage it correctly. For companies expanding nearshoring operations into Mexico in 2026, getting USMCA compliance right is not optional — it is the difference between a nearshoring strategy that works and one that gets quietly eroded by preventable duty costs at the border.
If your current logistics provider is not proactively managing your USMCA documentation — validating certifications before freight moves, not after a Customs hold — you are almost certainly leaving money at the border.
TMS, LP has been in this corridor since 2005. We manage the compliance so you can manage your business.
Read more supply chain insights from TMS, LP at https://shorturl.at/Gcz0x and at tms-lp.com.
Details
March 23, 2026
Trade Management Solutions
Name: Chelsea Wallace
Phone: 7377173260
Email: cwallace@tms-lp.com