Source: Supply Chain Dive
Date: 25th August 2026 

New Canadian tariffs taking effect September 8 will target U.S. steel, dairy products, appliances, agricultural equipment and other goods as the trade dispute between the two countries escalates.

Canada has announced a new round of retaliatory tariffs on U.S. imports, escalating trade tensions between two of North America’s most closely integrated economies.

From September 8, selected U.S. goods entering Canada will face additional tariffs of 15%, 25% or 50%, with the measures designed to match tariffs currently imposed by the United States on Canadian products.

The targeted categories include steel, dairy products, appliances, agricultural equipment, electronics, seafood, and pulp and paper.

Steel and aluminium imports will face the highest rate of 50%, increasing Canada’s previous 25% levy. Appliances, dairy products, fish and seafood, and certain steel and aluminium derivatives will face 25% tariffs.

Existing Canadian counter-tariffs, including measures affecting U.S. automobiles, will also remain in place.

Trade dispute moves into retaliation. The measures follow the introduction of new U.S. tariffs on Canadian products after negotiations between the two countries failed to produce an agreement.

Canada has characterised its response as a dollar-for-dollar and rate-for-rate countermeasure.

The government also announced a $7.5 billion support package for Canadian businesses and workers affected by U.S. tariffs.

The development means companies trading across the Canada–U.S. border must now consider tariff exposure in both directions, rather than focusing primarily on Canadian exports entering the United States.

What This Means

• The new tariffs could significantly change landed costs for businesses importing affected U.S. products into Canada.
• Companies should review HS classifications, country of origin, applicable tariff rates and existing contracts before shipments move after September 8.
• The impact could extend beyond the directly targeted products. Manufacturers operating integrated North American supply chains may source components and materials across the border multiple times, making tariff exposure increasingly important when evaluating sourcing and production decisions.

The escalation reinforces the need for businesses operating between Canada and the United States to treat customs and tariff planning as part of supply chain strategy rather than simply a clearance requirement.

Importers and exporters should map their exposure, calculate total landed costs and evaluate sourcing or routing alternatives where appropriate.

With tariffs now affecting trade flows in both directions, visibility over origin, classification and cross-border costs will be critical for companies managing North American supply chains.