The Clock Is Ticking: What Canada's CUSMA Review Means for Small Business
Date Published
The CUSMA formal review is set for July 1, 2026, and it's the most consequential trade event on Canada's calendar. With 85% of imports now claiming USMCA exemptions, tariff rates hitting 41% in steel and aluminum, and a 100% tariff threat looming, Canadian small businesses need a clear-eyed plan before the deadline.
Key Insights
The formal CUSMA review is scheduled for completion by July 1, 2026 — Scotiabank calls it the single most consequential macro uncertainty facing the Canadian economy this year.
By January 2026, 85% of Canadian and Mexican imports into the US were claiming USMCA exemptions, up sharply from stable 2024 levels, as businesses rushed to secure duty-free status.
Steel and aluminum products face effective US tariff rates of 41.1%; automotive vehicles face 14.9% — making CUSMA compliance a direct margin issue for suppliers in those sectors.
Trump threatened a 100% tariff on all Canadian goods in January 2026 if Canada pursues a trade deal with China; analysts estimate it would raise US inflation by 1.5–2% almost immediately.
Canada has retained retaliatory tariffs on US steel, aluminum, and automobiles while removing counter-tariffs on most other US imports as of September 2025.
Small businesses should verify USMCA rules-of-origin compliance, review supplier documentation, and pressure-test supply chain exposure to tariff-sensitive sectors before the July 2026 review window closes.
Canadian small businesses that depend on cross-border supply chains have a hard deadline to prepare for: July 1, 2026. That's when the formal review of CUSMA — the Canada-United States-Mexico Agreement — is scheduled for completion, and the outcome will determine whether the deal that underpins roughly $1 trillion in annual Canada-US trade gets extended, renegotiated, or allowed to deteriorate further. Scotiabank has called it 'the single most consequential macro uncertainty facing the Canadian economy this year.' For a business owner managing thin margins, supplier relationships, or US-bound product lines, that's not hyperbole — it's a planning horizon.
A Deal Under Pressure
CUSMA — known in the US as USMCA and in Mexico as T-MEC — has been the backbone of North American trade since it replaced NAFTA in 2020. But the current environment is anything but stable. Canada launched formal review consultations in September 2025, with the review window closing July 1, 2026. In the meantime, PM Mark Carney has described the deal as 'effectively broken,' reflecting just how far the relationship has deteriorated under more than a year of Trump tariff pressure. What was designed to be a routine six-year review is now taking place under extraordinary strain.
The 85% Exemption Rush — and What It Signals
One of the clearest signals of supply chain stress is a number that flew under the radar for most owners: by January 2026, nearly 85% of all Canadian and Mexican imports into the United States were claiming USMCA exemptions — up sharply from stable levels in late 2024. That surge isn't a coincidence. As tariff rates climbed through 2025, importers scrambled to document compliance with USMCA rules of origin to secure duty-free status and avoid the higher rates. The result: businesses that could prove their goods were genuinely North American in origin paid effective tariff rates below 5%, while those that couldn't faced a very different reality.
That different reality looks like this: steel and aluminum products now face effective tariff rates of 41.1%. Automotive vehicles face 14.9%. For any Canadian business selling into these sectors — or sourcing from suppliers that do — the margin impact is material and ongoing. Canada has retained its retaliatory tariffs on US steel, aluminum, and automobiles, having removed counter-tariffs on most other US imports effective September 1, 2025, as negotiations continued.
The 100% Tariff Threat Is Real
In January 2026, President Trump raised the stakes significantly, threatening to impose a 100% tariff on all Canadian imports if Canada finalizes a trade deal with China. The threat hasn't been acted on yet, but analysts aren't dismissing it. Economists estimate that a 100% tariff on Canadian goods would raise US inflation by 1.5 to 2 percentage points almost immediately — driven in large part by Canada's role as a top supplier of crude oil, natural gas, and auto parts to the American market. Whether that inflation risk is enough political deterrent remains unclear, but the threat itself has added another layer of uncertainty for businesses planning inventory, pricing, and supplier contracts through 2026.
What This Means for Your Business
If your business imports from or exports to the United States, CUSMA compliance is no longer a paperwork formality — it's a competitive advantage. The 85% exemption rate tells you that businesses with documented rules-of-origin compliance are already protecting themselves from punishing tariff rates. If you haven't verified that your goods qualify for USMCA treatment, or if your supplier certificates of origin are outdated, now is the time to work with a customs broker or trade lawyer to close those gaps before the July 2026 review creates further disruption.
Beyond compliance, the broader message is one of supply chain resilience. The July 1 review deadline is your planning anchor: use it to pressure-test your exposure to tariff-sensitive sectors like steel, aluminum, and auto parts; assess whether your US customer contracts have tariff-adjustment clauses; and begin mapping alternative suppliers if your current ones are concentrated in sectors facing the highest effective tariff rates. The deal may survive the review intact, or it may not — but businesses that have done the preparation will be better positioned either way.
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Frequently Asked Questions
What is the CUSMA review and why does it matter for my small business?
CUSMA (Canada-United States-Mexico Agreement) governs the terms of trade between Canada, the US, and Mexico. The deal includes a formal review clause that kicks in at the six-year mark — scheduled for July 1, 2026. If the three countries can't agree to extend or renegotiate, the agreement's future becomes uncertain, which could mean higher tariffs, lost duty-free access, and significant supply chain disruption for businesses that rely on cross-border trade.
What does it mean that 85% of imports are claiming USMCA exemptions?
It means businesses have been aggressively restructuring their supply chains and documentation to prove their goods meet USMCA rules-of-origin requirements — qualifying them for duty-free treatment instead of the higher tariff rates triggered by Trump's 2025 tariff campaign. For Canadian exporters, it's a signal that compliance paperwork is now a competitive necessity, not a bureaucratic detail.
Should I be worried about the 100% tariff threat on Canadian goods?
The threat is real but hasn't been implemented as of March 2026. Trump issued the warning in January 2026, tied specifically to Canada potentially finalizing a trade deal with China. Analysts estimate such a tariff would raise US inflation by 1.5–2% almost immediately — a political cost that may act as a deterrent. That said, the tariff environment over the past year has shown that threats can become policy quickly, so it's worth stress-testing your business against a worst-case scenario.
What practical steps can I take to prepare for the July 2026 CUSMA review?
Start by verifying that your goods qualify for USMCA treatment under the rules-of-origin requirements, and ensure your supplier certificates of origin are current. Work with a customs broker or trade lawyer if you haven't already. Review your US-facing contracts for tariff adjustment clauses, identify your exposure to high-tariff sectors like steel and aluminum, and begin mapping alternative suppliers if your supply chain is concentrated in vulnerable areas.
Which sectors are most at risk from current tariff rates?
Steel and aluminum face the steepest effective tariff rates at 41.1%, followed by automotive vehicles at 14.9%. Businesses that manufacture, source, or sell goods that fall into these categories — or that rely on suppliers who do — are most exposed. Energy-related goods are also at risk given Trump's 100% tariff threat, as Canada is a major supplier of crude oil and natural gas to the US market.