Canada says it will match Washington dollar for dollar. Will Ottawa's retaliatory tariffs on U.S. goods take effect Sept 8?

Canada's retaliatory tariffs on U.S. goods took effect at 12:01 a.m. on September 8, 2026, applying to roughly $20 billion worth of annual U.S. imports. The countermeasures imposed tariffs of 15, 25, and 50 percent, set to match the U.S. rate on each category of goods, targeting steel and aluminum, dairy, appliances, agricultural equipment, pulp and paper, plastics, and electronics. The move came in direct response to the collapse of U.S.-Canada trade talks in late August 2026 and President Trump's imposition of 50 percent tariffs on roughly $20 billion of Canadian products, which the U.S. said were meant to offset trade practices in sectors including alcoholic beverages, dairy, and motor vehicles. Prime Minister Mark Carney had pledged on August 22 that Canada would match U.S. tariffs dollar for dollar, rate for rate, describing the U.S. action as an attack. The tariffs mark a sharp escalation in the broader U.S.-Canada trade dispute that had simmered through 2025 and 2026 over autos, energy, and other sectors. The prediction-market community correctly anticipated the outcome, with 65 percent predicting the tariffs would take effect as scheduled.