Canada imposes retaliatory tariffs up to 50% on US goods worth $27.6 billion

Canada has announced retaliatory tariffs of up to 50% on C$27.6 billion ($19.9 billion) of U.S. goods starting September 8, 2026, matching Washington's levies dollar-for-dollar. The decision follows the collapse of trade talks, which Prime Minister Mark Carney blamed on U.S. demands targeting French language rules. In response, Ottawa is deploying a C$7.5 billion support package for affected workers and businesses. Meanwhile, President Donald Trump has threatened 50% tariffs on Canadian vehicles by 2027 and floated renaming Lake Ontario to 'Lake America'.

Canada retaliatory tariffs

• ▪Canada's retaliatory measures will double tariffs on American steel and aluminum products to 50%, up from the previous rate of 25%.
• ▪Canada announced on August 25, 2026, that it will impose retaliatory tariffs of up to 50% on C$27.6 billion ($19.9 billion) worth of U.S. goods starting September 8, 2026.
• ▪The Canadian retaliatory tariffs will apply duties of 15%, 25%, or 50% across more than 700 U.S. products, including steel, aluminum, dairy, seafood, appliances, and electronics.

US-Canada trade negotiations breakdown

• ▪The White House and U.S. President Donald Trump denied allegations of interfering with the French language, calling the claims a political lie manufactured by Prime Minister Mark Carney.
• ▪Canadian Prime Minister Mark Carney stated that trade negotiations collapsed because U.S. negotiators made last-minute demands that threatened French language rules and Quebec culture.
• ▪Trade negotiations between the United States and Canada collapsed on August 21, 2026, after both sides failed to reach an agreement to avert the U.S. tariffs.

Canadian worker support package

• ▪The Canadian support package includes C$3.5 billion for worker programs, C$1.5 billion for regional development liquidity, C$2 billion for the Canada Strong Diversification Fund, and C$500 million for business loans.
• ▪The Canadian government announced a C$7.5 billion ($5.4 billion) financial support package on August 25, 2026, to assist workers and businesses affected by the U.S. tariffs.

Trump tariff threats escalation

• ▪U.S. President Donald Trump stated on August 25, 2026, that his administration is giving serious consideration to renaming Lake Ontario to 'Lake America' due to the trade dispute with Ontario.
• ▪Ontario Premier Doug Ford warned that the province could retaliate against the United States by cutting off electricity exports and restricting the supply of critical minerals.
• ▪U.S. President Donald Trump announced on August 24, 2026, that the United States will increase tariffs on all Canadian cars, trucks, automotive parts, and steel to 50% starting January 1, 2027.

US-Canada trade war timeline

• ▪The United States and Canada have been engaged in a continuous trade dispute since President Donald Trump returned to office in January 2025, involving multiple rounds of tariffs on metals, autos, and lumber.
• ▪U.S. President Donald Trump invoked Section 338 of the Tariff Act of 1930 on July 20, 2026, to clear the way for 50% tariffs on $20 billion of Canadian goods.