Canada will impose new "dollar for dollar, rate for rate" counter-tariffs on C$27.6bn ($19.91bn) of US imports, with dairy and seafood among the food categories affected.
The move, announced yesterday (25 August) by the Department of Finance Canada, comes after trade talks with Washington broke down and the US went ahead with implementing a 50% tariff on Canadian goods, such as alcohol and dairy products.
According to the Canadian government, the countermeasures are focused on sectors "most impacted by US tariffs", including steel, dairy, appliances, agricultural equipment, pulp and paper and electronics.
Canada's counter-tariffs will take effect on 8 September.
They will apply at rates of 15%, 25% and 50%, matching the corresponding US tariff rate on targeted products.
The Finance Department said goods subject to 25% tariffs include "dairy products, such as cheese, fish and seafood" as well as appliances and certain steel and aluminium derivative products.
Examples of dairy products facing 50% tariffs include milk powder and whey protein concentrate, while some cheese lines, including cheddar, parmesan and mozzarella, face 25% duties.
Seafood lines subject to 25% tariffs include Pacific salmon, Atlantic salmon, swordfish, trout, tuna and sardines.
Last week, the US had delayed implementation of the 50% tariffs last week for three days, after US President Donald Trump said the two countries had reached a deal "subject to the finalisation of documents".
However, no final agreement was struck and the tariffs on Canadian goods came into force over the weekend.
Canadian Prime Minister Mark Carney said on Saturday (22 August) that Ottawa had suspended negotiations after the US proposed terms that were "uneconomic, unfair and undermined the net benefits to Canada".
In a statement issued with the latest measures, finance minister François-Philippe Champagne said: "When the United States asked too much and offered too little, we chose to stand up for Canadians.
"Our dollar-for-dollar, rate for rate counter-tariffs as well as a multi-billion dollar support package will protect workers, farmers, families, and businesses as we build a stronger, more resilient, and more diversified Canadian economy."
Alongside the tariffs, Ottawa unveiled a C$7.5bn support package for affected workers and businesses, including liquidity support for small and medium-sized companies, a new diversification fund and worker-retention measures.
Other existing Canadian counter-tariffs on US goods, including autos, are still in place.
"Dairy, seafood hit by Canada tariffs on US" was originally created and published by Just Food, a GlobalData owned brand.