Canada will impose retaliatory tariffs on U.S. steel, dairy, appliances, agricultural equipment, pulp and paper, and electronics starting September 8, Prime Minister Mark Carney announced this weekend, after trade talks with Washington collapsed and 50 percent U.S. duties on roughly $20 billion of Canadian goods took effect at midnight Friday. Carney said Canada would match the new tariffs dollar for dollar, and accused Washington of using tariffs to hurt and divide the country.
Most coverage since Friday has focused on the politics of the breakdown: Carney suspending negotiations, premiers splitting over whether to retaliate, and his warning that Canada is effectively at war with its largest trading partner. Largely missing is a concrete answer to the question every Canadian shopper actually has: how much more will the goods on that new list cost, and for how long? Canada’s own central bank already has real data on exactly that, because the country ran this experiment less than a year ago.
What Happened the Last Time Canada Did This
Between March and September 2025, Canada imposed 25 percent counter-tariffs on a broad range of U.S. goods, including groceries, appliances, electronics, furniture and household items, during an earlier round of the same trade fight. Bank of Canada researchers later tracked daily online prices for more than 110,000 products across seven major Canadian retailers to measure what actually happened to shelf prices, publishing the results this past May.
The finding: prices of tariffed goods rose gradually and peaked about 6 percent above equivalent non-tariffed products by mid-June 2025, roughly one-quarter of the 25 percent tariff rate reaching consumers, adding an estimated 0.3 percentage points to overall inflation. When Canada lifted most counter-tariffs on September 1, 2025, prices reversed almost as fast as they had climbed, with groceries and appliances back near pre-tariff levels within three months.
Why the Overlap With the New List Matters
Appliances and electronics, two categories the Bank of Canada tracked closely last year, are on the new September 8 list again, alongside steel, dairy, agricultural equipment, and pulp and paper. That overlap gives Canadians a direct precedent, but researchers also found a wrinkle worth watching: pass-through was not just a function of the tariff rate. It depended heavily on how long retailers expected the fight to last. When the U.S. announced a separate, sweeping round of global tariffs on April 2, 2025, a month into Canada’s counter-tariffs, one appliance retailer in the study raised prices 7 percent within two days and 10 percent within a month, even though no new Canadian tariff had taken effect. Retailers were repricing based on their belief the conflict would drag on, not on the tariff itself.
That detail matters now because this round looks built to last longer than last year’s. Carney suspended negotiations outright rather than pausing them, ruled out further talks for now, and said support measures for affected industries could remain in place for years. If retailer expectations alone pushed roughly a quarter of the 2025 tariff onto shelf prices within three months, a fight both governments are already framing as open-ended could push that pass-through higher and faster.
An Unresolved Detail Political Coverage Has Skipped
Carney has not yet released the specific tariff rate or the full line-by-line list for September 8, only the sector names, with details promised in the coming days. Whether Ottawa matches the U.S. rate of 50 percent or repeats last year’s 25 percent will materially change how closely the 2025 price data applies. Premiers are also split on the strategy: Ontario’s Doug Ford backed Carney’s tariff-for-tariff, dollar-for-dollar approach, while Alberta Premier Danielle Smith’s office questioned why Canada would punch its own businesses, workers and consumers in the face to match a fight it did not start.
Until Ottawa publishes the actual tariff schedule, the size of the hit to Canadian shoppers cannot be pinned down precisely. But the Bank of Canada’s own tracked evidence from earlier this year gives a real, evidence-based range to watch for once September 8 arrives: a partial, gradual price increase on the newly tariffed goods, likely visible within weeks, that should unwind again just as quickly if this round of the trade war ends the way the last one did.
via NPR News (npr.org)
