Sept 15 Tariff Shift: What's Actually Changing on Canadian Goods (And What Isn't)
Published September 12, 2026 At 12:01 a.m. ET on Tuesday, September 15, a new round of U.S. tariff changes takes effect on Canadian goods. If you've seen headlines calling this a "new 50% tariff on Canadian steel, aluminum and paper," here's the more accurate story: it isn't a new tariff at all. It's the U.S. reshuffling which products fall under a 50% tariff that's already been in place since August 22 — adding some categories, removing others, on the same day. Here's what's actually happening, and why it matters more to Canadian manufacturers and cross-border shoppers than to your everyday grocery bill. The tariff this modifies Back on August 22, 2026, the U.S. imposed a 50% tariff under Section 338 of the Tariff Act of 1930 on roughly $20 billion CAD of Canadian goods. The White House framed it as retaliation for Canadian "discrimination" against U.S. alcoholic beverages, dairy, and motor vehicles — three separate proclamations, eac...
