Canada imposes $27.6 billion retaliatory tariffs on US

Canada imposed additional tariffs of 15 to 50 percent on $27.6 billion of US goods on September 8, 2026, officials said. Reaction to the move was not immediately visible in markets, and officials gave no timetable for further measures.

Tariffs target $27.6 billion of goods

Officials said the duties apply across a range of US products and take effect immediately. The government described the step as a reciprocal measure following recent US actions; officials framed the decision as aimed at protecting domestic industries while underscoring the scale of the response.

If Washington mounts further countermeasures, trade flows between the two countries could face higher costs and logistical disruption. Tariffs raise input prices for manufacturers and can prompt firms to reroute sourcing or adjust pricing; that mechanism tends to weigh on exporters and import-dependent sectors until duties are resolved.

Market participants will watch for a US reply by September 11, 2026, and for any official notifications to trading partners or international bodies in the coming days. The immediate open question is whether measures escalate into broader restrictions or settle with targeted levies.