Canada has begun imposing a new round of counter-tariffs on selected goods imported from the United States, with the measures taking effect on September 8, 2026. The move follows Washington’s decision to apply higher tariffs to Canadian products and represents Ottawa’s latest effort to protect domestic industries from the impact of the escalating trade dispute.

Under the new measures, Canadian tariffs of 15%, 25% and 50% will apply to specific U.S.-origin products. The government says the rates have been designed to correspond with the applicable U.S. tariff rates on the same categories of goods.

The measures cover approximately C$27.6 billion worth of imports from the United States. Products affected include steel, dairy goods, household appliances, agricultural equipment, pulp and paper products and electronics.

According to the Canadian government, the new tariffs took effect at 12:01 a.m. on September 8. The measures are part of a broader response to U.S. tariffs that Canada says have placed additional pressure on Canadian workers, farmers, manufacturers and businesses.

Ottawa has stressed that the countermeasures are targeted rather than a blanket tariff on American imports. The government says the approach is intended to defend sectors most exposed to the latest U.S. trade actions while maintaining support for Canadian businesses and workers.

Alongside the tariff response, Canada has announced a C$7.5 billion package of additional support measures. The package includes funding for businesses facing tariff-related pressures, expanded liquidity assistance and new programmes intended to help affected workers and employers manage the disruption.

The government has also expanded assistance for small and medium-sized businesses through regional development programmes and financing initiatives. Additional support has been earmarked for sectors including forestry, steel and aluminium.

The latest action adds another layer to a trade dispute that has increasingly affected businesses on both sides of the Canada-U.S. border. Canada says it did not initiate the conflict but is responding to what it considers harmful U.S. trade measures.

For Canadian companies that rely on the American market or American suppliers, the new tariff structure could increase costs and force businesses to reassess sourcing and supply-chain arrangements. At the same time, Ottawa is attempting to use financial support programmes to cushion the effect on domestic employment and investment.

The Canadian government says its broader objective is to protect the country’s economic interests while strengthening domestic production and encouraging businesses to diversify their markets.

The new counter-tariffs therefore mark an important development in Canada-U.S. trade relations, with businesses and industries now adjusting to the measures that officially came into force on September 8.