Canada Raises Counter-Tariffs on U.S. Steel to 50%, Effective September 8th, 2026
Effective September 8th, 2026, Canada is imposing new counter-tariffs on $27.6 billion of U.S. imports, matching the U.S.’s recent Section 338 tariffs dollar-for-dollar. The move follows the breakdown of trade negotiations between the two countries, after which the U.S. imposed a 50% tariff on $27.6 billion of Canadian goods effective August 22nd, 2026. As part of Canada’s response, its existing counter-tariff on steel and aluminum products is increasing from 25% to 50%, in line with U.S. rates.
Carbon steel and stainless steel pipe, tube, and fittings, including flanges, fall within the affected product categories. Importers of these goods from the United States will see the tariff rate on those products double as of the effective date. The countermeasures do not apply to goods already in transit to Canada when the new rate takes effect.
Corestock sources the majority of its pipe, fittings, and flanges from domestic Canadian suppliers, with additional inventory sourced internationally, including a significant portion of pipe from Taiwan. As a result, the company’s exposure to this increase is limited.
The increase builds on tariff measures Canada first introduced on steel and aluminum in 2025, which have remained in place throughout ongoing trade negotiations with the U.S. Other existing counter-tariffs, including those on U.S. autos, continue to apply unchanged.