Canada’s Tariff Fault Lines
Who is most exposed to the new U.S. trade shock? A province-by-province view reveals that dependence, dollar risk and industrial vulnerability do not land in the same places.
Tariffs arrive at a border, but their economic impact spreads through a map. A duty on a vehicle assembled in Ontario can reach a parts plant in Manitoba. A measure aimed at steel can reshape purchasing in construction. A new restriction on dairy products can fall hardest on a narrow set of exporters even while most Canada–U.S. trade keeps moving tariff-free.
This is the central contradiction of the current trade shock. Canada is deeply integrated with the United States, yet the exposure is anything but uniform. The Bank of Canada estimates that the average U.S. tariff rate on Canadian goods embedded in its July outlook is 5.0 per cent—far above the 0.1 per cent rate before 2025, but also far below the headline rates attached to particular products. The reason is CUSMA: roughly 85 per cent of Canadian exports continue to enter the United States tariff-free. The remaining burden is concentrated in non-compliant trade and in heavily targeted sectors.
To see where that burden can transmit most forcefully, Data Map Journal analyzed Statistics Canada customs-basis merchandise trade for the latest complete twelve-month period, July 2025 through June 2026. We calculate two separate indicators. Dependence is the U.S. share of each province’s domestic goods exports. Scale is the dollar value of those exports. We then add product concentration, U.S. state destinations and the second-quarter 2026 Canadian Survey on Business Conditions.
Exposure is not the same as damage
The indicators in this story describe where a shock could travel most powerfully; they do not predict an equal loss on every dollar. A province with a high U.S. share may sell mostly CUSMA-compliant goods, face a lower sector rate or have contracts that shift costs to buyers. A province with a lower share may contain one community whose main employer is tied to a targeted product. Exchange rates, inventories, profit margins and the ability to find another customer all shape the final outcome.
Nor is gross export value the same as provincial income. An exported vehicle contains imported parts; a barrel of oil contains more Canadian value added. A full estimate of GDP or employment at risk would require input-output tables, firm behaviour and assumptions about demand. We deliberately stop short of that claim. The value of these indicators is comparative: they show where dependence, scale and concentration overlap—and where they do not.
A shock built in layers
There is no single “Canada tariff.” The regime is a stack of general rules, exemptions, sector measures, retaliation and new targeted actions. That makes status language essential: some measures are in force, some were temporary, and some were announced but exempt CUSMA-compliant goods. The timeline below follows the major milestones that shape the present exposure.
The July Bank of Canada outlook provides the cleanest summary of the effective system as it stood on July 10. It assumes North American trade remains mostly free under CUSMA while specific industries face large barriers. Its trade-weighted rate for U.S. tariffs on Canadian goods was 5.0 per cent; Canada’s average rate on U.S. goods was 1.5 per cent after remissions. The August 19 actions arrived after that cutoff, so they are best understood as an additional targeted shock, not as a new 50 per cent tax on every Canadian export.
Three policy buckets
First, measures in force. These include duties on non-CUSMA-originating Canadian goods, sector measures covering metals and motor vehicles, Canada’s remaining counter-tariffs on steel, aluminum and automobiles, and the targeted U.S. duties that took effect August 19. In-force does not mean universal: the applicable rate can depend on origin, U.S. content, the tariff line and whether another sector regime already applies.
Second, announced measures with explicit carve-outs. The July Section 301 action related to forced-labour import rules set a 10 per cent rate for Canada and a small group of economies, but the Canadian government said CUSMA-compliant goods were exempt. This is economically important because the exemption protects the majority of bilateral trade while increasing the value of origin compliance.
Third, possible or review-dependent changes. CUSMA’s review process, ongoing bilateral negotiations and product-list revisions can change the perimeter without creating a new headline tariff. These possibilities matter for investment decisions, but we do not count them as current tariffs. The analysis below therefore measures trade exposure to the U.S. market, not a hypothetical tariff bill.
This distinction also explains why an average tariff rate is useful but incomplete. A five per cent trade-weighted average can coexist with a zero rate on most shipments and a much larger rate on a narrow list. The average describes the macroeconomic drag; the product rule determines who receives the invoice.
The dependence map
A province can be highly dependent on the U.S. market without moving a nationally large dollar volume. New Brunswick illustrates this distinction. Refined petroleum and other energy products help push its U.S. share above 91 per cent, but its $15.3 billion in U.S.-bound goods is less than one-tenth Alberta’s total. Prince Edward Island is also highly dependent at 74.5 per cent, yet its absolute flow is just under $2 billion.
The map also reveals a western split. Alberta sends 84.0 per cent of its domestic goods exports to the United States. British Columbia sends 48.2 per cent, reflecting more access to Pacific markets and a more diversified destination mix. Saskatchewan falls between them at 54.9 per cent. Newfoundland and Labrador’s U.S. share is only 31.2 per cent because its commodities also flow to Europe and other destinations.
Scale changes the answer
Ask which province is “most exposed” and the result depends on the metric. A small exporter can face a high concentration risk, while a large exporter can transmit shocks through more workers, suppliers and communities. Plotting dependence against dollar value separates those questions.
Ontario is the scale story. Its $185.8 billion in U.S.-bound domestic exports exceeds the combined total for Quebec, British Columbia, Saskatchewan, New Brunswick, Manitoba and Atlantic Canada outside Newfoundland and Labrador. Much of that exposure sits in motor vehicles and parts—a tightly integrated supply chain where components can cross the border multiple times before a finished vehicle reaches a buyer.
Alberta is the concentration-and-scale story. It exported $155.6 billion in goods to the United States, and energy products represented 81.9 per cent of that flow. Energy has often received different tariff treatment from other goods, which lowers the average duty relative to some manufactured products. But commodity concentration still creates bargaining and market-access risk: the province has a very large customer and a product mix dominated by one category.
Every province has a different transmission channel
Broad product sections are not tariff schedules. They cannot tell us that every item in a category pays a duty, and we do not use them that way. They do show the economic channel through which border costs, weaker U.S. demand or policy uncertainty are most likely to move.
Alberta
- Energy 81.9%
- Chemicals/plastics 4.7%
- Consumer goods 3.4%
Ontario
- Motor vehicles 31.6%
- Consumer goods 18.7%
- Metal products 11.2%
Quebec
- Metal products 21.1%
- Consumer goods 17.5%
- Aircraft/transport 15.5%
B.C.
- Energy 21.9%
- Forestry/materials 21.2%
- Consumer goods 12.0%
Saskatchewan
- Energy 54.6%
- Farm/food 21.2%
- Ores/minerals 17.4%
New Brunswick
- Energy 50.5%
- Chemicals/plastics 18.6%
- Forestry/materials 10.6%
Quebec’s profile is more diversified but intersects several sensitive files. Metal and non-metallic mineral products lead its U.S.-bound mix; aircraft and other transportation equipment ranks third. British Columbia’s exposure is split between energy and forestry-related products, while Saskatchewan combines energy, agriculture and potash-bearing mineral trade. Manitoba has no single category above one quarter: farm and food products lead at 23.4 per cent, followed by consumer goods and industrial machinery.
That diversity matters for resilience. A broad market shock can hurt a concentrated exporter more quickly, but a sector-specific measure can strike a diversified province if it lands on a major cluster. The August dairy action is a reminder: a policy can be narrow in national trade statistics and severe for the producers, processors and communities inside its product list.
The U.S. market is also a geography
Canadian exports do not disappear into one national destination. They land in industrial and consumption hubs. Statistics Canada’s province-of-clearance table shows Illinois, Michigan and Texas as the three largest reported state destinations for Canadian merchandise exports over the latest twelve months. Illinois alone received $83.8 billion, Michigan $62.0 billion and Texas $47.3 billion.
The destinations reflect supply chains as much as final customers. Michigan’s auto ecosystem links directly to Ontario. Texas and Illinois are major energy, refining, transport and distribution nodes. A border measure therefore creates effects on both sides: Canadian producers face weaker margins or demand, while U.S. firms can pay more for inputs or reroute suppliers. The integrated map is one reason high headline tariffs do not translate mechanically into the same effective burden for every shipment.
Businesses see the pressure—but not uniformly
Trade statistics show flows; surveys show expectations. In the second quarter of 2026, 15.8 per cent of Canadian businesses expected U.S. tariffs on goods sold from Canada to have a major negative impact over the next twelve months. Another 18.2 per cent expected a minor negative impact. Nearly half expected no impact, and 17.6 per cent were uncertain.
Manufacturing stands out: 54.0 per cent expected a negative impact, twenty percentage points above the all-industry average. Wholesale trade and agriculture were close behind. Construction’s exposure is often indirect—through steel, aluminum, machinery and other inputs—yet 40.3 per cent expected harm. This is how a targeted border measure broadens into a domestic cost shock.
Price pass-through is already visible. Among businesses answering the tariff-cost question, 28.3 per cent said they had passed tariff-related cost increases to customers over the previous twelve months; 38.4 per cent had absorbed them, while 33.3 per cent said they had not experienced such costs. Looking ahead, 33.8 per cent were very or somewhat likely to pass increases on. These percentages are not an inflation forecast, but they identify the route through which tariffs can move from customs invoices to household and business budgets.
“Buy Canadian” behaviour is measurable but not universal. Some 16.6 per cent of businesses reported changing marketing practices to promote Canadian products, and 14.2 per cent reported increased sales of Canadian products. The response is therefore meaningful without being economy-wide. For many firms, supplier qualification, capacity, price and specialized inputs limit how quickly sourcing can move.
What the fault lines mean
Dependence is not scale
New Brunswick is the most U.S.-dependent provincial goods exporter. Ontario has the largest dollar exposure. Policy support and risk planning should not confuse the two.
Composition determines the channel
Alberta’s risk runs through energy; Ontario’s through autos and manufacturing; Quebec’s through metals, consumer goods and aerospace; Atlantic exposure is smaller but often more concentrated.
CUSMA is the main shock absorber
Most bilateral trade remains tariff-free. Origin compliance, documentation and product classification are now economic infrastructure, not administrative detail.
The map also points toward adaptation. Export diversification can reduce dependence, but it takes ports, standards, customer networks and time. Domestic sourcing can improve resilience, but not every U.S. input has a ready Canadian substitute. Interprovincial trade reform can widen the home market, yet it cannot replace the scale or proximity of U.S. demand overnight.
The most credible short-run strategy is therefore layered: preserve CUSMA compliance; help firms document origin; target relief to the product lines actually affected; monitor pass-through; and invest in the infrastructure that makes diversification possible. Broad claims about a national tariff crisis obscure the places where the risk is truly concentrated—and the places where policy can be most precise.
Canada’s trade relationship with the United States remains enormous, integrated and mostly open. The new shock does not erase that reality. It redraws the fault lines inside it.
Data & methodology
What we calculated
Period: July 2025 through June 2026, the latest complete twelve-month window available when this analysis was produced.
U.S. dependence: domestic merchandise exports to the United States divided by domestic merchandise exports to all countries, by province or territory.
Absolute exposure: the Canadian-dollar value of domestic merchandise exports to the United States. This is trade exposure, not an estimate of tariff payments or GDP at risk.
Commodity mix: each NAPCS section’s share of a province’s U.S.-bound domestic exports. Broad sections are used to describe trade structure, not to assign tariff status.
Business effects: published weighted estimates from the Q2 2026 Canadian Survey on Business Conditions. “Negative” combines major and minor negative responses.
Important limitations
Customs data assign domestic exports to the province of origin and are not seasonally adjusted. Monthly values can be volatile, so we use a rolling year. Re-exports are excluded from provincial dependence calculations.
Tariff liability depends on HS classification, country-of-origin rules, CUSMA eligibility, content calculations, quotas, remissions and effective dates. No broad NAPCS category should be read as wholly tariffed.
The Bank of Canada tariff averages use a July 10 policy cutoff. U.S. actions effective August 19 are described separately and are not assumed to be included in those averages.
Survey results are estimates subject to sampling and non-sampling error. Planned actions may overlap because respondents could choose more than one.
Sources
- Statistics Canada table 12-10-0175-01, merchandise trade by province, product and principal trading partner.
- Statistics Canada table 12-10-0099-01, Canada–U.S. state merchandise trade.
- Statistics Canada table 12-10-0173-01, annual province, country and product trade.
- Statistics Canada table 33-10-1148-01, expected tariff impacts, Q2 2026.
- Statistics Canada tables 33-10-1149-01 and 33-10-1152-01 to 33-10-1155-01, planned responses, pass-through and Canadian-product behaviour.
- Bank of Canada, July 2026 Monetary Policy Report: tariff assumptions.
- Department of Finance Canada, current counter-tariff product list.
- White House proclamation on specified Canadian dairy products, effective August 19, 2026.
- White House proclamation on specified Canadian motor-vehicle products, effective August 19, 2026.
- Global Affairs Canada statement on the 2026 Section 301 action.
Analysis and visualizations: Data Map Journal. Figures may be reproduced with attribution. Last policy check: August 23, 2026.