The trade dispute between the US and Canada has entered another period of escalation, putting pressure on one of the world's most closely integrated trading relationships.
Canada's latest measures took effect on September 8th, imposing tariffs of up to 50 percent on $20 billion of US imports. They target sectors including steel, dairy, appliances, pulp and paper, agricultural equipment and electronics, while existing Canadian counter-tariffs on US autos remain in place.
For businesses, however, the biggest effects are being felt in industries where production and supply chains routinely cross the US-Canada border.
Which sectors could feel the biggest impact?
The latest US measures cover more than 500 product categories. Canada has responded with plans to match the measures "dollar for dollar". With trade between the two economies deeply interconnected, the consequences could extend beyond exporters to businesses throughout their supply chains. These are the industries that will be most impacted by new tariff rules:
- Food and beverages: Categories such as alcohol and dairy are expected to be among the hardest-hit Canadian industries, facing the new 50 percent US tariff.
- Technology and electronics: Canadian-made cameras, radar equipment and antennae are also among the products facing the 50 percent US tariff. Additionally, Canada plans to target US electronics in retaliation, creating the potential for additional costs in both directions.
- Lumber and wood products: Lumber, plywood, mouldings, furniture and fence components are included among the products subject to the latest 50 percent levy. The new measures come on top of pre-existing US tariffs on Canadian lumber, increasing pressure on an industry already affected by trade restrictions.
- Automotive: Cars are already subject to existing US tariffs. Further Canadian retaliation could encourage buyers to shift towards vehicles from other markets.
- Aerospace and defense: These industries could face a different kind of impact. Canada has traditionally sourced significant defense equipment from the US, but continued tensions could encourage procurement to shift towards European and other suppliers.
- Consumer goods: Clothing, toys, jewelry, makeup, perfumes, sporting equipment and seasonal products are also included among the Canadian goods facing the 50 percent US tariff. Consumers could ultimately experience higher prices or reduced choice as businesses respond to increased import costs.
What happens next?
A quick resolution appears unlikely. Negotiations collapsed in August and the latest retaliation is adding uncertainty ahead of the upcoming review of the US-Mexico-Canada Agreement.
Diversification may become increasingly attractive for businesses, but redirecting established supply chains is rarely straightforward. In the meantime, importers and exporters need to pay close attention to tariff changes as well as product classification and origin. Canada's latest measures apply specifically to goods originating in the US, making accurate HS classification and country-of-origin determination increasingly important.
The bigger question is what happens if temporary disruption becomes a longer-term feature of US-Canada trade. Supply chains have developed around decades of close cross-border integration. The longer tariffs remain in place, the more likely businesses are to move beyond absorbing additional costs and start reconsidering where they source, manufacture and sell.