Canada's matching tariffs on $27.6 billion of U.S. goods take effect

At 12:01 a.m. on 8 September, Canadian counter-tariffs of 15, 25 and 50 per cent began applying to United States goods covering C$27.6 billion of annual imports. The rates match, product by product, the U.S. duties that took effect on 22 August after talks between Ottawa and Washington collapsed.

Finance Minister François-Philippe Champagne had announced the package on 25 August with Industry Minister Mélanie Joly, Jobs Minister Patty Hajdu and Digital Innovation Minister Evan Solomon. The official formula is dollar for dollar and rate for rate. About 700 product lines sit on the list, later revised to 648 tariff items in one legal summary and as high as 874 lines in another government-adjacent count. The Canada Border Services Agency administers the surtax. Goods already in transit on the day of entry are exempt.

Steel and aluminium that previously faced a 25 per cent Canadian counter-tariff now sit at 50 per cent. Furniture, clothing and apparel also take the 50 per cent rate. Appliances, cheese and some steel-derivative products take 25 per cent. Electronics and tools sit at 15 per cent. Existing duties on automobiles and auto parts stay in place. Washington has already threatened to lift those vehicle duties to 50 per cent from 1 January 2027.

The U.S. action that triggered the reply used Section 338 of the Tariff Act of 1930 and Section 232 of the Trade Expansion Act of 1962. President Donald Trump imposed a 50 per cent tariff on roughly US$20 billion of Canadian exports, a figure Ottawa restated as C$27.6 billion. Canada’s list concentrates on the sectors most exposed on its own side: steel, dairy, appliances, agricultural equipment, pulp and paper, plastics and electronics. Dairy is newly covered even inside tariff-rate quota volumes, which is a change from earlier rounds.

Ottawa also announced a C$7.5 billion support package for firms and workers. The Business Development Bank of Canada will offer interest-free loans of C$2.5 million to C$5 million. Joly told reporters the product list was written to put pressure on particular U.S. states as well as on whole industries. Existing CUSMA-origin exemptions still apply where they already exist. Importers must still prove origin.

Alberta’s honey belt is one of the first farm stories to surface. The province produces about 40 per cent of Canada’s honey. A wet season had already cut yields. The new duties now sit on top of that weather shock and on U.S. tariffs moving the other way. Processors that mix Canadian and American inputs will have to split their bills by tariff line rather than by crate.

Trade lawyers tracking the file note that Canada deleted some fish and seafood items from an early draft on 26 August. Cosmetics, perfumes, certain plastics, lumber, wood pulp, paper, carpets, hand tools, rail engines, motorcycles and gaming equipment remain. The 50 per cent band covers 404 lines in one private-sector count, the 25 per cent band 449 lines, and the 15 per cent band 21 lines. Those numbers will matter at the border more than the political speeches.

The timing is not accidental. Labor Day weekend traffic in both directions had already priced in the U.S. hike. Tuesday morning is the first full working day on which Canadian customs clerks apply the matching schedule. Firms that booked U.S. steel, Wisconsin cheese or Ohio appliances last month now face a landed-cost reset if the cargo was not already on the water.

Neither the White House nor the U.S. Trade Representative issued a fresh comment as the Canadian clock struck midnight. The two governments have been in a tariff exchange since 2025. This is the widest Canadian expansion of countermeasures since March of that year. It does not end the auto file. It does not restore the old dairy peace. It does put a number on the table that buyers, not just ministers, will have to carry.

Importers who rely on mixed North American bills of materials now have to map every Harmonized System code against two schedules, the U.S. one that has been live since 22 August and the Canadian one that started this morning. A crate that was cheap last Tuesday can be expensive this Tuesday without any change in the factory price. That is the point of a matching list.

The next test is mechanical. CBSA notices, origin paperwork and remission applications will decide whether the 8 September list is a bargaining chip or a new floor. Washington’s January 2027 auto threat remains the larger hanging clause. For now the tariff war has a date stamp and a product list, and both are in force.