As previously reported, on August 22, 2026, Canadian Prime Minister Mark Carney announced that Canada will impose dollar-for-dollar retaliatory tariffs in response to the Section 338 additional duties that went into effect following the suspension of trade negotiations between the U.S. and Canada. 

On August 25, 2026, the Canadian Government unveiled the finalized list of U.S. products that will be subject to tariff rates of 15, 25, or 50 percent totaling approximately 27.6 billion CAD (roughly equivalent to 20 billion USD).  While further guidance is expected from the Canada Border Services Agency, the Canadian Government clarified that the “tariffs only apply to goods originating from the U.S.” meaning that “those goods eligible to be marked as a good of the U.S.” under Canada’s country-of-origin regulations.  The tariffs are currently scheduled to go into effect at 12:01 a.m. on September 8, 2026. 

As expected, the finalized list targets politically sensitive U.S. industries.  Included in the tariffs are numerous seafood products including lobster, dairy, forestry products, textiles and apparel, primary iron and steel and derivative products, primary aluminum and derivative products, hand tools, appliances, and electronics. 

U.S. companies exporting products to Canada should review the finalized list and appropriate Harmonized Tariff Schedule headings to evaluate potential duty exposure and assess any necessary compliance or supply chain adjustments.  We encourage you to consult your Husch Blackwell attorney if you have any questions. 

The Husch Blackwell International Trade and Supply Chain team continues to monitor developments related to U.S.-Canada trade relations and will provide updates as they become available. If you have questions about coverage, timing, or supply chain impacts, please contact your Husch Blackwell attorney.