A $4 billion hit: What Carney’s tariff retaliation could cost Canadian consumers

A $4 billion hit: What Carney’s tariff retaliation could cost Canadian consumers ANALYSIS 1 SEPTEMBER 2026 i Families with kids face costs of roughly $250 per year from the tariffs TREVOR TOMBE ARTICLE SUMMARY KEY STATS On Sept. 8, roughly $30 billion in imports from the United States will face Canadian tariffs of between 15 and 50 percent. This is our response to the 50 percent U.S. tariffs now applied to approximately five percent of our exports. Overall, I estimate Canada’s average tariff response works out to about 30 percent, on average, across affected goods. That’s roughly 60 cents of response for every dollar of U.S. tariff. While not full dollar-for-dollar retaliation, as the government frames it, it is still a large response. And it comes on top of certain retaliatory tariffs already in place from last year. There are real costs and benefits to weigh here. The goal is to change U.S. behaviour and raise funds to cover new government support programs for workers and businesses disrupted in the trade war. But we must also be clear about the costs and consequences of these tariffs on Canadians more generally. Consumers in particular will be hit, with tariffs increasing prices for a wide variety of goods. Not dramatically, but potentially by enough to notice—and by more for the households least able to absorb it. I’ll explain. Tariffs are taxes Let’s start with the basics. Tariffs are a tax on Canadian buyers of imported goods. They raise the price of those imports, and potentially of substitutes from other countries or made here at home. Two channels matter. The direct one is simple: households buy imported U.S. goods, and tariffs can show up in what they pay. The indirect one is trickier. Businesses import inputs too, and those inputs are now taxed. Higher input costs mean higher prices, and where those goods feed into other goods and services, the effect cascades through the supply chain. That channel matters a lot, since Canada’s tariffs fall mostly on industrial supplies and capital goods. We have good data on both to estimate things, though there’s uncertainty here around how businesses may respond, how quickly they change prices, what fraction of tariffs are passed through to buyers, how consumers change behaviour, and more. But these caveats aside, a rough estimate of the effect is still valuable to know. The effect on consumer prices Overall, I estimate that the increase in overall consumer prices is roughly a quarter of…