Trade relations between Canada and the United States have deteriorated sharply in recent days. Negotiations broke down on August 21, and the United States has since applied 50 percent tariffs on approximately 20 billion dollars of Canadian goods, covering categories from dairy and alcohol to electronics and building materials. Prime Minister Carney has suspended trade talks and confirmed that Canada will respond dollar for dollar with retaliatory tariffs beginning September 8, targeting American steel, dairy, appliances, agricultural equipment, pulp and paper, and electronics.
A dispute of this kind between two closely integrated economies naturally produces a strong political and emotional reaction. Trade disputes between close allies touch on sovereignty, fairness, and national interest, not economics alone. Markets will continue to react to the twists and turns of the headlines. We believe the more useful approach for investors is to step back from the daily news cycle and assess the range of plausible outcomes from here.
Our Approach: Scenarios, Not Headlines
We frame the issue through scenarios rather than tracking each turn in the news cycle. The direct economic impact, even with tariffs now in effect, still looks manageable. Current estimates place the drag on Canadian GDP at less than 0.5 percent, and a large majority of Canadian exports to the United States, on the order of 80 percent, remain tariff free under existing trade agreement exemptions. The latest round of tariffs, representing roughly 5 percent of total Canadian exports to the U.S., is meaningful but contained in scope. Any impact would likely be felt most in manufacturing heavy provinces such as Ontario and Quebec, and in the specific sectors named in each round of measures. The larger risk is not the tariffs themselves, but what happens if uncertainty lingers: confidence weakens, investment decisions are delayed, and businesses begin planning around a less predictable Canada U.S. trade relationship.
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Scenario 1: Negotiated Resolution Following Initial Escalation |
Probability: 50% |
This scenario reflects a now familiar pattern of escalation followed by a rapid return to negotiations. Despite the current suspension of talks, both sides return to the table within weeks, a deal is reached, and at least some of the new tariffs are eased or rolled back. Markets react to the initial shock, but businesses treat the episode as a negotiating tactic rather than a lasting change in the trading relationship.
Economic damage would likely be limited. Confidence rebounds as uncertainty fades, delayed spending and hiring decisions resume, and Canadian assets, including the Canadian dollar, recover from a shallow pullback. The medium-term outlook remains largely intact, supported by the deep integration of North American supply chains.
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Scenario 2: Prolonged Retaliatory Escalation |
Probability: 35% |
In this scenario, Canada proceeds with its planned retaliatory tariffs on September 8, and the United States responds in kind. Negotiations remain stalled, political pressure builds on both sides, and a cycle of retaliation and counter retaliation continues for weeks or months before a compromise is eventually reached.
The direct tariff impact remains contained, but uncertainty becomes more damaging than the tariffs themselves. Businesses delay capital spending, hiring plans become more cautious, and foreign investors adopt a more defensive, wait and see stance toward Canadian assets. Sectors named in the tariff lists, and the regions where they are concentrated, face more pressure even as the national impact stays manageable.
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Scenario 3: Entrenched Long Term Tariffs |
Probability: 15% |
This is the lowest probability but highest consequence scenario. Elevated tariffs remain in place for an extended period with no expiry, and businesses begin to treat the current uncertainty as permanent rather than temporary.
The greatest risk in this scenario is behavioural. Companies postpone expansion plans, redirect capital, reconsider supply chains, and favour jurisdictions perceived as more predictable. Hiring slows, confidence deteriorates, and investment weakens.
Over time, weaker investment would compound Canada’s existing productivity challenges and weigh on long term growth. Canadian assets could face a persistent valuation discount, and the Canadian dollar would likely remain under pressure. The damage becomes harder to reverse the longer the uncertainty lasts.
Bottom Line
The direct economic impact of the tariffs now in effect remains manageable, but the duration of the uncertainty matters more than the headline tariff rate. The numbers are not trivial, but they are also not catastrophic: the expected GDP impact is estimated at less than 0.5 percent, and the large majority of Canadian exports to the United States remain tariff free. If the dispute is resolved within weeks, as it has been in prior rounds, the damage should be limited. If uncertainty persists through the fall and into next year, confidence, investment, and business behaviour, rather than the tariffs themselves, become the primary channels through which this dispute affects the Canadian economy and markets.
As always, we are monitoring developments closely and will adjust portfolio positioning as warranted. At this stage, we do not believe the current environment calls for a change in overall strategy. The intensity of the current news cycle does not change our approach. We invest for the long term in high-quality companies that are well positioned to succeed, and short-term share price volatility tied to this dispute does not alter that view.