Trump orders 50% tariffs on selected Canadian imports

The United States will impose 50% tariffs on a range of Canadian goods after President Donald Trump signed three proclamations on Monday, senior Trump administration officials said, according to CNBC. The measures are scheduled to take effect 30 days after the signings and mark a further escalation in trade tensions between the two North American allies.

The officials said the duties respond to alleged discrimination by Canada against several U.S. products and industries. Each proclamation targets a different set of Canadian imports, they said on a call with reporters.

The measures fall under Section 338 of the Tariff Act of 1930, according to the officials. A tariff is a duty charged on imported goods, usually collected at the border from the importer, and can alter the cost structure for companies that rely on cross-border supply chains.

The administration did not frame the action as a single, broad tariff on all Canadian trade. Instead, officials described three separate proclamations aimed at different areas where the U.S. says it has faced discriminatory treatment.

“Canada has to be held accountable for this continued discrimination,” one administration official said, according to CNBC.

Trade relationship under strain

Canada has long been one of the United States’ closest allies and commercial partners. The latest action comes amid Trump’s wider use of tariffs as a central trade policy tool and his public dissatisfaction with the trilateral trade pact linking the U.S., Canada and Mexico.

The officials’ description leaves several details unresolved, including the full list of goods covered by the proclamations and the specific Canadian policies that the administration says amount to discrimination. The timing is clearer: the tariffs are set to begin 30 days after Monday’s signings, creating a limited window before importers face the new duty.

For companies trading across the U.S.-Canada border, the policy mechanism is direct. If an affected Canadian product enters the United States after the effective date, the added 50% duty would raise the tariff burden tied to that import. The commercial impact would depend on which products are covered, how contracts allocate tariff costs and whether buyers can source substitutes.

The announcement adds pressure to a trade relationship already unsettled by Washington’s tariff-heavy agenda. It also places Canada, a partner in the North American trade framework with Mexico, at the center of a fresh dispute over market access and alleged unequal treatment of U.S. industries.

The action was described by officials as a response to separate areas of alleged discrimination, rather than a general penalty tied to a single sector. Further implementation details are expected to determine how broadly the tariffs affect trade flows between the two countries.

This story draws on original reporting from CNBC.