![Canada Fired Back at Its Biggest Customer](https://cdn.slatesource.com/0/6/b/06b139c5-630e-4b9b-9684-e1010ab5e1c3.webp) # Canada Fired Back at Its Biggest Customer - [Made in Slatesource](https://slatesource.com/@steph/canada-fired-back-at-its-biggest-customer) - By [Steph](https://slatesource.com/@steph) - Created on Sep 13, 2026 Canada-US annual goods and services trade, 2025 $872 billion Change from 2024 down 4.6% ($42B) Canadian counter-tariffs on US goods, effective Sept 8 $27.6 billion Products covered by Canada's counter-tariffs 874 tariff items US export decline to Canada, Jan 2025 to Jan 2026 down 10% Canada's exports to non-US economies, same period up 17% ## The Partnership That Just Blew Up The United States and Canada have been each other's largest trading partners for most of the past century. In 2025 they exchanged $872 billion in goods and services. That figure is now falling. In the twelve months to January 2026, Canadian exports to the US dropped 10% while exports to every other destination rose 17%. The decoupling is not rhetoric. It is in the data. On August 22, 2026, the Trump administration imposed 50% tariffs on approximately $20 billion of Canadian goods, citing "discriminatory treatment" of US dairy, alcohol, and motor vehicle exports. Trade negotiations had been running through the summer. They collapsed the night before the deadline. Canadian Prime Minister Mark Carney described it plainly: "The United States proposed new terms that were uneconomic, unfair and undermined the net benefits for Canada." He said talks could resume. His next sentence announced retaliation. [Canada Department of Finance: list of US products subject to counter-tariffs (primary source)](https://www.canada.ca/en/department-finance/news/2026/08/list-of-products-from-the-united-states-subject-to-counter-tariffs-effective-september-8-2026.html?utm_source=slatesource) ## $27.6 Billion, 874 Items, Dollar for Dollar Canada's counter-tariffs took effect at 12:01 a.m. on September 8, 2026. The package covers $27.6 billion of US imports. Tariff rates of 15%, 25%, and 50% apply, each matched to the equivalent US rate on the same Canadian product. Steel, dairy, household appliances, agricultural equipment, pulp and paper, electronics, motorcycles, and cosmetics are among the 874 tariff items. This is not Canada's first retaliation. Earlier in 2025, Ottawa had already placed 25% tariffs on roughly $22 billion in US goods, and separate 25% levies on non-USMCA-compliant vehicles remain in force. September 8 is the third wave. The total value of Canadian counter-tariffs now exceeds the entire GDP of countries like Hungary or the Slovak Republic. Carney called it what it was: "We are at war with the United States." > We have everything we need to pivot and prosper. That pivot will come at a cost. There is always a cost to action. ## 27 US States Whose Biggest Export Customer Is Canada The US side is not watching from a distance. Canada is the single largest export destination for 27 US states. Michigan, Ohio, Indiana, and Wisconsin, the core of American manufacturing, shipped roughly $78 billion in goods north of the border in 2025. Vermont sends 80% of its cheese and milk exports to Canada. Maine's lobster industry has been lobbying Washington all summer. Canada's industry minister was explicit about the political architecture: "We are picking products that will target states in the US. We are being wise and strategic to put political pressure." The tariff list was designed to land on Trump's electoral coalition, not on Democratic strongholds. With US midterm elections on November 3, 2026, that calculation has an expiry date. Trade expert Mary Lovely put it as neutrally as the evidence allows: "The tariffs are going to hit a mix of red, blue and purple states." [CBS News: which US states face the biggest exposure to Canada's tariffs](https://www.cbsnews.com/news/canada-retaliatory-tariffs-michigan-indiana-impact/?utm_source=slatesource) ## 90,000 Canadian Jobs, Half a Point Off GDP The economic damage is not symmetrical but it is real on both sides. Economist Trevor Tombe (University of Calgary) estimates up to 90,000 Canadian jobs are at risk if 50% US tariffs remain in place. A more conservative model from TD Economics puts the figure at 52,000 direct jobs, with a further 35,000 in supplier and service industries. Ontario accounts for 36,100 of the direct exposures, Quebec 18,300. The Bank of Canada's current assessment puts the hit at 0.3 to 0.6 percentage points of GDP growth over the next year. Manufacturing was already contracting: motor vehicles and parts fell 7.6% year-over-year, primary iron and steel down 10.3%, alumina and aluminum down 17.7%. Ottawa announced a $5.42 billion support package for affected businesses and workers when it confirmed the September 8 tariffs, drawing directly from the framework Carney used during the 2025 steel and aluminum rounds. ![](https://cdn.slatesource.com/0/6/b/06b139c5-630e-4b9b-9684-e1010ab5e1c3.webp) ## The USMCA Is Now a Question Mark The United States-Mexico-Canada Agreement has underpinned North American trade since 2020 and is due for its next six-year review in 2026. Both the September tariffs and Canada's counter-tariffs apply to goods that were previously protected under USMCA, which is the legal point the Canadian government has raised at the World Trade Organization. The WTO challenge is formally lodged. Its timelines run in years, not weeks, and any ruling would face a US veto risk in the Appellate Body. The practical question is whether USMCA survives its review intact, whether it is renegotiated under conditions of open hostility, or whether it is allowed to lapse. No official in Washington or Ottawa has publicly predicted a lapse. Several have stopped calling it impossible. The Trump administration's September 8 response to Canada's retaliation was a ban on Canadian dairy products, motorcycles, and alcoholic beverages, effective September 29. The escalation ladder has not yet found a ceiling. [US Trade Representative: Canada bilateral trade overview](https://ustr.gov/countries-regions/americas/canada?utm_source=slatesource)