Canada's trade surplus is booming for the wrong reasons

CANADA HAS BEEN running a merchandise trade surplus for four consecutive months by early summer. In May the surplus widened to C$4.24 billion, its largest since early 2023, as exports rose to a record high, according to Statistics Canada. Earlier reports of a C$3.86 billion surplus in June suggest the streak continued, though June figures have yet to be confirmed by the statistics agency. After a miserable stretch of deficits as large as C$6 billion during the latter half of 2025, the numbers look strikingly better. The improvement is also a warning.

The reason for Canada's trade revival is not hard to see, and it is not structural in any encouraging sense. Middle-east conflict is the proximate cause. The war in the region choked crude-oil and fertiliser shipments through the Strait of Hormuz, raising global demand and prices for alternative sources. Canada's metal-ore and non-metallic-mineral exports jumped 16.1% in May, largely on sulphur, a key ingredient in fertiliser production. Energy exports had surged 43% between February and April as oil prices climbed, before dipping 2% in May. The Middle East is a more reliable customer for Canadian commodities when its own output is disrupted. That is hardly a foundation for long-term prosperity.

To be sure, there are real positives in the data. Total exports hit a record C$77.1 billion in May, with broad-based gains in consumer goods, industrial chemicals, and farm and fishing products. Imports, meanwhile, fell slightly. The trade surplus with the United States alone widened to C$11.6 billion, the highest since January 2025. These are numbers that suggest the Canadian economy has shaken off its recent stagnation. BMO, a Canadian bank, noted in a note to investors that net exports looked set to add firmly to growth in the second quarter, breaking a two-quarter funk.

Yet the deeper problem is concentration. Exports to the United States rose to almost 70% of Canada's total in May. Despite the tariff threats and trade jitters of the past year, Canadian businesses have not managed to diversify meaningfully. Exports to countries other than the United States continued to shrink, even as the deficit with the rest of the world widened to C$7.4 billion. Decades of integrated North American supply chains are not easily unwound. The Canada-United States-Mexico Agreement, whose next review looms beyond 2036, continues to bind Canadian firms to American buyers in ways that no amount of rhetorical diversification can change.

What happens when the Middle East conflict eases is the question that matters. A ceasefire was reported in mid-June, with Hormuz shipments slowly returning. Robert Kavcic at BMO called May's surplus "probably the high watermark for now", noting that Canadian trade surpluses can reverse quickly with swings in oil prices. If sulphur demand normalises and oil flows resume through the Gulf, the commodity windfall that has been propping up Canadian exports will evaporate. The structural deficit with non-US trading partners will then reassert itself.

This is not to say that Canada's trade position is hopeless. It is to say that the recent surplus masks rather than solves the underlying vulnerability. A country whose export base is overwhelmingly commodity-dependent and overwhelmingly American-facing has two sources of risk. The first is geopolitical: energy shocks can be as favourable as they are unfavourable, and Canada cannot choose the direction. The second is political: the United States is governed by a president who has used tariffs as a blunt weapon against even close allies. When the surplus narrows, as it almost certainly will, Ottawa's negotiating position with Washington will weaken further.

The better answer is not to celebrate a temporary boom. It is to accelerate the diversification that politicians have promised and failed to deliver. That means trade agreements with the Indo-Pacific that go beyond signature ceremonies, industrial policies that raise the value-added content of Canadian exports rather than merely shipping raw materials, and a preparedness strategy for a US that may be a less predictable customer. Tariffs aside, the deeper truth is that a country with only one serious trading partner is, in practice, a tributary state. The recent trade surplus is a pleasant interlude, not a cure.