Canadian Dollar Slides to 12-Day Low as U.S. Trade Fight Adds Pressure on Loonie

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The Canadian dollar is once again feeling the strain from forces largely outside Canada’s borders. The loonie dropped to its weakest level in nearly two weeks as a strengthening U.S. dollar, shifting interest-rate expectations and an increasingly hostile Canada-U.S. trade relationship combined to make Canadian assets a tougher sell.

The currency’s latest decline does not amount to a crisis. Yet it highlights how quickly the outlook has become complicated. Canada is confronting new tariffs from its largest trading partner just as oil prices are adding inflation pressure and the U.S. Federal Reserve appears ready to tighten monetary policy. For households, exporters and businesses importing goods in U.S. dollars, even relatively modest currency movements can matter. For policymakers, the challenge is larger: supporting a trade-exposed economy without allowing higher energy, tariff and import costs to become embedded in inflation.

The Loonie Falls to Its Weakest Level Since Early September

The Canadian dollar weakened to C$1.3915 per U.S. dollar on September 14, equivalent to roughly 71.86 U.S. cents, after reaching an intraday low of C$1.3929. That was its weakest level since September 2 and marked a noticeable reversal from the stronger levels seen only days earlier. Currency markets rarely move for a single reason, and this decline was no exception. Canadian inflation figures were roughly in line with expectations, offering investors little reason to suddenly reprice the loonie higher, while demand for the U.S. dollar strengthened across global markets.

The distinction matters because the latest slide cannot simply be blamed on bad Canadian economic data. Much of the immediate pressure came from the other side of the exchange rate. Investors were buying dollars as expectations grew that the Federal Reserve could raise interest rates. At the same time, Canada’s escalating trade confrontation with Washington has created another layer of uncertainty around Canadian growth and investment. The result is a loonie being squeezed by both a stronger greenback abroad and country-specific economic risks at home.

The Canada-U.S. Trade Fight Is Becoming a Currency Problem

Trade tensions have moved well beyond political rhetoric. The Canadian government says the United States imposed a 50% tariff on C$27.6 billion worth of Canadian goods beginning in August. Ottawa responded with counter-tariffs covering C$27.6 billion of U.S. imports, with rates of 15%, 25% and 50% taking effect September 8. Targeted categories include steel, dairy products, appliances, agricultural equipment, pulp and paper, plastics and electronics. Washington has since announced additional restrictions on selected Canadian products, adding to uncertainty surrounding an already deeply integrated trading relationship.

Foreign-exchange traders care because tariffs can weaken growth, discourage investment and disrupt supply chains. Even the threat of additional measures can cause companies to delay spending while they wait for greater certainty. The effect became visible earlier in September, when the loonie weakened despite rising crude prices. RBC Capital Markets attributed some of that pressure to the overhang created by new U.S. retaliatory actions. For a currency historically supported by commodities and close access to the American market, deteriorating trade relations remove part of that traditional advantage.

A Stronger U.S. Dollar Is Making the Pressure Worse

The loonie is also running into a powerful U.S. interest-rate story. The Federal Reserve is holding its September 15–16 policy meeting with markets increasingly expecting another move toward tighter monetary conditions. In a Reuters poll released September 14, 85% of economists expected the Fed to lift its target range by a quarter percentage point to 3.75%–4.00%. That expectation represents an important shift because higher U.S. rates can make dollar-denominated assets more attractive relative to investments elsewhere.

Bond markets have reinforced the message. The U.S. 10-year Treasury yield briefly pushed above 5% on September 14, reaching that level for the first time since 2023 as investors worried about inflation, elevated oil prices and the prospect of tighter monetary policy. Higher Treasury yields can attract global capital toward the United States, strengthening demand for dollars. Canada therefore does not necessarily need dramatically weaker fundamentals for USD/CAD to rise. When American yields move higher while investors become more cautious about Canada’s trade outlook, the exchange-rate pressure can build surprisingly quickly.

Canada’s Inflation Numbers Give the Bank of Canada Little Room to Relax

Canada’s inflation picture is not signalling an emergency, but it is uncomfortable enough to complicate the Bank of Canada’s choices. Statistics Canada reported that the Consumer Price Index rose 3.0% year over year in August, unchanged from July. Gasoline prices were 22.8% higher than a year earlier, although their annual increase slowed from 25.7% in July. Excluding gasoline, inflation was 2.4%. Consumer prices fell 0.1% month over month before seasonal adjustment, while underlying inflation measures remained much closer to the central bank’s 2% objective.

The Bank of Canada held its overnight policy rate at 2.25% on September 2, leaving it unchanged for another meeting. That creates a notable gap with U.S. rates even before any additional Fed tightening. The Canadian central bank has also acknowledged that new trade measures and elevated energy costs create upside risks to prices. A weaker currency adds another complication because imported goods become more expensive in Canadian-dollar terms. Policymakers therefore face an awkward mix: trade uncertainty can weaken economic growth while tariffs, energy costs and currency depreciation can simultaneously lift inflation.

Even Oil Above US$100 Has Not Been Enough to Rescue the Loonie

Canada’s currency has traditionally been associated with crude oil because energy is one of the country’s largest exports. In earlier commodity cycles, sharply higher petroleum prices could produce an equally noticeable lift for the Canadian dollar. That relationship has weakened. U.S. crude recently climbed above US$100 a barrel, while Brent crude has also traded above that threshold amid renewed Middle East supply concerns. Yet the loonie still slipped, illustrating how trade uncertainty and U.S. dollar strength are currently overpowering one of its traditional sources of support.

The Bank of Canada has studied why the connection has changed. Oil prices, interest-rate differentials and broad U.S. dollar movements remain important determinants of Canada’s exchange rate, but higher crude prices do not automatically produce the investment boom they once did. Canadian energy producers have become more capital-efficient, and more cash can be returned to shareholders rather than immediately reinvested in large domestic projects. That reduces the demand for Canadian dollars that historically accompanied oil booms. The present episode is therefore unusual but not unprecedented: expensive crude can help Canada’s trade position while simultaneously creating inflation problems without guaranteeing a stronger currency.

Canada’s Dependence on the U.S. Magnifies Every Trade Shock

The currency market’s sensitivity makes more sense when the scale of Canada’s American exposure is considered. Roughly 70% of Canadian exports go to the United States, leaving manufacturers, resource companies and transportation networks closely tied to U.S. demand and trade policy. The Bank of Canada has said the economy spent much of the past year adjusting to U.S. tariffs and trade uncertainty. GDP in the first quarter of 2026 was roughly unchanged from its level a year earlier, while business investment was broadly flat and exports and housing activity had experienced periods of weakness.

Recent labour data have added another cautionary signal. Canada lost about 41,700 jobs in August, including roughly 35,900 full-time positions, although the unemployment rate held at 6.4%. Those figures do not mean tariffs caused every job loss, but they underline why investors are sensitive to another deterioration in trade conditions. A factory considering new machinery, a supplier negotiating a long-term contract or an exporter deciding where to expand now has to account for tariff risk that barely existed under the older North American trade framework. Currency markets price some of that uncertainty almost instantly.

Exporters Can Benefit From a Weaker Loonie — But There Is a Catch

Currency depreciation is not universally negative for Canadian companies. An exporter earning U.S. dollars while paying many of its costs in Canadian dollars can see revenues rise when those American earnings are converted home. The Bank of Canada’s July outlook specifically noted that the recent depreciation of the loonie was making Canadian exports more competitive. That can provide some relief to companies selling commodities, manufactured goods and services internationally at a time when tariffs are creating pressure elsewhere.

Still, a cheaper currency is not a substitute for reliable market access. Bank of Canada research using Canadian data has found that the reason behind a currency movement can matter more for exports than depreciation alone. U.S. economic growth, for example, can have a stronger effect on Canadian export performance than the mechanical price advantage generated by a lower exchange rate. A manufacturer facing a 50% tariff cannot simply solve the problem with a few cents of currency depreciation. The loonie can cushion part of the impact for some firms, but it cannot compensate for closed markets, disrupted supply chains or customers unwilling to absorb tariff-related costs.

Canadian Consumers and Importers Eventually Feel the Difference

A weaker loonie becomes more tangible when Canadian companies need to purchase goods priced in U.S. dollars. Imported machinery, electronics, food products, vehicles, components and other merchandise can become more expensive even if their foreign-currency price does not change. Statistics Canada has previously documented this pass-through effect. During one period beginning in 2021, the Canadian dollar depreciated 10.6% against the U.S. dollar while import prices increased 19.4%, although numerous factors beyond the exchange rate also contributed to that increase.

Tariffs can compound the pressure. Bank of Canada researchers examining Canadian retaliatory tariffs found that prices of tariffed products in their dataset increased gradually, reaching about 6% after three months—roughly one-quarter of the underlying 25% tariff being passed through at the retail level. Those findings do not mean every new tariff will produce an identical price increase. They do illustrate the mechanism facing businesses today. A Canadian importer can simultaneously confront a weaker currency, higher duties and more expensive transportation or energy. Companies can absorb some of those costs through lower margins, but prolonged pressure increases the likelihood that at least part eventually reaches customers.

The Loonie’s Next Major Move May Depend on Whether the Trade Fight Cools

Currency forecasters are not assuming the Canadian dollar will remain under pressure indefinitely. A Reuters poll of 32 foreign-exchange analysts conducted from August 31 through September 2 produced a median forecast of C$1.39 per U.S. dollar in three months, equivalent to approximately 71.94 U.S. cents. Over a 12-month horizon, the median projection had the loonie strengthening to C$1.36 per U.S. dollar. The crucial assumption behind much of that optimism is that Canada-U.S. trade tensions eventually ease rather than spiral into a deeper and more permanent rupture.

That assumption now looks increasingly important. A trade agreement or meaningful de-escalation could remove part of the risk premium hanging over Canadian assets, while eventual narrowing of the interest-rate gap and stronger domestic investment could offer additional support. The opposite scenario would be much more difficult. More tariffs, prolonged U.S. dollar strength or a Federal Reserve that tightens significantly faster than the Bank of Canada could keep USD/CAD elevated. For now, the 12-day low is best viewed not as an isolated market fluctuation, but as another indication that the loonie has become a real-time barometer of Canada’s increasingly complicated relationship with its largest trading partner.

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