Canada Hits Back: C$27.6bn in Retaliatory Tariffs on US Goods
Canada will impose retaliatory tariffs on C$27.6bn (£14.6bn) in US imports starting September 8, 2026, Finance Minister François-Philippe Champagne and Industry Minister Mélanie Joly announced on August 25. The package covers more than 700 items, with most tariffs set at 25% or 50% and a smaller group — including air conditioning units and tool parts — set at 15%. The targeted sectors span steel, dairy, appliances, agricultural equipment, pulp and paper, cosmetics, wood products, and outdoor equipment The Guardian.
The move is Ottawa's "focused response" to US tariffs that took effect on Saturday, August 22, after trade negotiations collapsed late on Friday, August 21. The White House invoked Section 338 of the Tariff Act of 1930 — a rarely used provision that lets the President impose special duties on countries judged to discriminate against US commerce — to place duties on roughly 5% of Canadian exports to the US. The administration cited Canadian trade policies that include provincial bans on US alcohol The Guardian. The US measures added a 50% duty across three lists of Canadian imports covering approximately $20bn in goods, including dairy products (milk, cream, whey, caseinates, lactose, and cheese ingredients), power tools and equipment, armoured safes, locks and lockboxes, brewery machinery, and refrigerating or freezing furniture and equipment Newsweek; CTV News.
Prime Minister Mark Carney had pledged a "dollar-for-dollar" response — meaning Canada aims to match the US measures in scale — and suspended trade negotiations with the US, with no additional talks scheduled Reuters. The retaliatory levies apply only to goods originating from the United States The Guardian.
This is not the first round of countermeasures in the dispute. Canada imposed 25% tariffs on C$29.8bn in US imports effective March 13, 2025, targeting steel, aluminum, and automobiles, and has since applied dollar-for-dollar retaliatory tariffs on C$12.6bn in steel products and additional aluminum products Government of Canada; Global Affairs Canada. The August 25 announcement adds more than C$7bn in business support on top of over C$20bn already committed over the preceding 18 months The Guardian.
Champagne, presenting the measures after meeting with provincial and territorial finance counterparts, said Canada remained "masters of our own home." Joly called on businesses and consumers to buy Canadian goods as part of a broader "resistance" movement in the trade war The Guardian.
The rhetoric from both capitals has sharpened considerably. Ontario Premier Doug Ford called Trump a "loser" and the "king of bankruptcies" and threatened to cut electricity and rare earth metal exports to the US. Trump responded by calling Ford a "flunky" of "Governor Carney" and warned the leaders to "fall in line" or face far worse consequences for Canada The Guardian. Trump also said he was giving "serious consideration" to renaming Lake Ontario to "Lake America," and denied reports he would interfere with Canadians speaking French, calling the claim "a lie ... made up by a weak and ineffective Prime Minister" The Guardian. On August 24, Trump threatened to raise tariffs to 50% on all cars and trucks imported from Canada Reuters.
The broader context here is a sustained and deepening pressure on one of the world's most integrated bilateral trading relationships. Canada and the US have spent decades weaving their economies together — cross-border supply chains, integrated energy markets, and shared infrastructure mean that tariffs on one side ripple quickly to the other. Canada's counter-tariffs have grown in specificity and scale across multiple rounds since March 2025, and the Section 338 invocation escalates the legal framework being deployed. Section 338 allows the President to impose discriminatory duties on countries deemed to discriminate against US commerce. Its application here, targeting specific Canadian sectors rather than across-the-board imports, gives Ottawa a narrow but politically sensitive set of targets for retaliation. The inclusion of dairy on both sides is particularly fraught, given longstanding supply management disputes — Canada's system of controlling dairy production through quotas and price-setting — under the USMCA framework.
Carney's suspension of negotiations, combined with the two-week window before the Canadian tariffs take effect, leaves limited room for diplomatic off-ramps. The C$7bn in additional business support signals Ottawa's expectation that the disruption will be sustained rather than transient. Ford's threat to restrict electricity and rare earth exports, while not yet enacted, introduces a non-tariff escalation vector that would extend the conflict beyond trade in goods into critical infrastructure and strategic minerals. Whether the September 8 implementation date becomes a hard deadline for a negotiated resolution or simply the next milestone in a protracted dispute will depend on whether either side perceives mounting economic costs as exceeding the domestic political value of confrontation.
