The US-Canada tariff war is escalating fast, and while the conflict is bilateral, the supply chain exposure is not. EU manufacturers with North American operations or cross-border sourcing are already feeling indirect effects – even where the EU itself is not a party to the dispute.

A TIMELINE OF ESCALATION

• 20 July 2026: President Trump signs three proclamations imposing an additional 50% tariff on a broad range of Canadian goods
• 24 July 2026: the US introduces forced-labour tariffs of 10-12.5% following a USTR investigation into 60 economies, including Canada
• 19 to 22 August 2026: the new tariffs take effect, following a short delay from the original date
• 25 August 2026: Canada announces retaliatory tariffs of 15% to 50% on more than 700 US products, effective 8 September 2026, doubling its own steel and aluminium tariffs to 50%
• Canadian officials, including Ontario’s premier, have floated energy exports and potash as further leverage – not yet in effect

WHY THIS MATTERS WITHOUT A NORTH AMERICAN PRESENCE

Many EU manufacturers operate production or supply chains that cross the US-Canada border repeatedly, a legacy of deeply integrated USMCA supply chains in sectors such as automotive and machinery. EU parent companies with Canadian or US subsidiaries absorb tariff costs directly or indirectly, through internal transfer pricing and supply agreements – regardless of whether the EU itself is a party to the dispute.

WHERE THE EXPOSURE CONCENTRATES

Automotive and machinery: components that cross the US-Canada border multiple times accumulate tariff cost at every crossing. EU manufacturers with North American plants see their cost base rise without the EU being a party to the underlying conflict.

Steel and aluminium: now that Canada is doubling its own tariff on US steel to 50%, US steel that no longer flows to Canada may look for buyers elsewhere – including the EU. This raises the trade diversion risk we flagged in our earlier coverage of Trump’s updates to steel, aluminium and copper tariffs (https://smarttradecompliance.com/2026/06/03/trump-updates-steel-aluminium-copper-tariffs-what-eu-exporters-need-to-know/), and ties into the safeguards built into the EU-US trade agreement (https://smarttradecompliance.com/2026/08/11/proving-non-preferential-us-origin-regulation-2026-1455/).

Fertiliser inputs and potash: potash was explicitly excluded from the 20 July tariffs, but Canadian officials have named it as a possible future lever. In a further escalation, EU producers with their own production capacity could step in to serve part of the US demand at short notice – an example of trade diversion working as an opportunity rather than only a risk.

Other sectors on Canada’s retaliation list – dairy, appliances, agricultural equipment, pulp and paper, and electronics – are relevant to EU businesses with joint ventures or subsidiaries supplying the Canadian market from North American operations.

WHAT TO CHECK NOW

• Map which parts of your supply chain – including tier 2 and tier 3 suppliers – pass through the US or Canada
• Review price adjustment and hardship clauses in contracts with North American suppliers and customers
• Monitor potential trade diversion into the EU market, particularly in steel and aluminium, and raise safeguard concerns with your trade association where relevant
• Keep an eye on the steel and aluminium clause in the EU-US trade agreement (https://smarttradecompliance.com/2026/08/11/proving-non-preferential-us-origin-regulation-2026-1455/): EU tariff preferences can be suspended if the US fails to respect the 15% ceiling by 31 December 2026
• Track further announcements on potash and energy as possible Canadian retaliation measures

THE BOTTOM LINE

The conflict is playing out between the US and Canada, but the consequences reach further. EU businesses with North American supply chains – whether direct or through subsidiaries – would do well to map their exposure now, ahead of the 8 September 2026 tariffs actually taking effect. For businesses reviewing their own compliance readiness in parallel, our articles on preparing for an AEO re-assessment:(https://smarttradecompliance.com/2026/05/08/preparing-for-an-aeo-re-assessment-without-disrupting-operations/) and the EU customs reform: (https://smarttradecompliance.com/2026/05/11/eu-customs-reform/) set out what strong supply chain documentation is increasingly expected to look like.

Smart Trade Compliance monitors developments in EU and international trade policy affecting supply chains. Have questions about what this means for your organisation? Contact us. (https://smarttradecompliance.com/contact)