US-Canada Trade War Escalates: What Tariffs Mean for Consumer Prices

Sweeping new tariffs are increasing the cost of living for consumers on both sides of the border as the trade dispute between the United States and Canada intensifies. The retaliatory measures from Canadian Prime Minister Mark Carney’s government went into effect Tuesday, targeting approximately $20 billion in American products following the collapse of trade negotiations last month.

Canadian officials stated the new duties are designed to mirror “dollar for dollar, rate for rate” the 50% tariffs President Donald Trump imposed on roughly $20 billion of Canadian imports in August. The conflict is poised to widen later this month when the Trump administration plans to ban imports of specific dairy products, motorcycles, and alcoholic beverages from Canada starting September 29.

The tariffs affect a narrow segment of the broader economic relationship. According to experts, U.S. duties impact about 5% of the $382 billion in Canadian exports to the United States in 2025, while Canadian counter-tariffs affect approximately 6% of the more than $330 billion in U.S. exports to Canada.

“The current amount of trade isn’t all that large,” noted Kimberly Clausing, a tax law expert at UCLA and former lead economist in the Biden administration’s Office of Tax Policy. “The impact will be significant, certainly to those who are trying to sell products, but it won’t be as enormous as if this gets more out of hand.”

Although tariffs are technically paid by importers, those costs are frequently passed on to buyers. Peter Morrow, a University of Toronto economics professor, warned that leaders may be prioritizing political signaling over economic welfare.

“My concern is that people will go down this path of what they perceive as demonstrating strength, when in fact people are lowering their own living standards in what is an affordability crisis in both countries,” Morrow said.

Public sentiment reveals a sharp contrast between the two nations. A recent Ipsos poll for Global News found that over 70% of Canadians support the retaliatory tariffs, with more than 60% agreeing with the decision to abandon negotiations even if it results in higher costs or job losses. An Angus Reid Institute poll indicated nearly 70% of Canadians view Carney as showing strength by rejecting a unfavorable deal.

Conversely, an Ipsos poll found that nearly 60% of Americans oppose additional tariffs on Canada. Clausing suggests this disparity stems from the political context, noting that Carney remains “immensely popular” because he has pushed back against Trump’s rhetoric threatening Canadian sovereignty.

Data from polling firm Abacus Data shows 53% of Canadians hold a positive view of their Prime Minister, while Trump’s approval ratings have dipped since the trade war began. “Even though the retaliatory tariffs will ultimately hurt them, I think the Canadians are willing to withstand a fair amount of pain, in part because they view the stakes as very large,” Clausing said. “In contrast, I don’t think Americans have a beef with Canada… so I don’t think the American consumers are going to be as willing to endure pain.”

Beyond economics, diplomatic tensions have escalated through provocative gestures and rhetoric. In late August, Trump signed an executive order instructing the Interior Secretary to rename Lake Ontario to “Lake America,” a move widely rejected by politicians in both nations. More recently, Trump posted an illustration on Truth Social depicting himself and Carney in hockey gear, with Trump standing over a fallen Carney and saying, “Get up, governor.” Trump has previously referred to Canada as the “51st state.”

Clausing expressed concern that the ongoing hostility is eroding business confidence north of the border. “I think even the rhetoric around this trade war has really diminished Canadian interest in doing business with the United States,” she said, adding that it is difficult to overstate how upset Canadian citizens and businesses are by the situation.

Morrow echoed these concerns, warning that the two nations appear to be inching toward further escalation without a clear path to de-escalation. “At some point, there’s going to have to be an offer—there’s going to have to be an off-ramp,” Morrow said. “I don’t see that off-ramp right now, and that’s what makes me most concerned.”