Canada's $27.6B Counter-Tariffs Take Effect September 8 as Both Sides Threaten Deeper Escalation

Canada imposes counter-tariffs of 15, 25, and 50 per cent on $27.6 billion in U.S. imports starting September 8, 2026, after trade talks collapsed August 21. Ottawa retains a standing threat to expand to $155 billion if U.S. tariffs persist. Trump has separately threatened 50 per cent tariffs on Canadian vehicles and parts, which would hit deeply integrated cross-border manufacturing.