Ontario blasts U.S. lumber tariffs as Canadian wood hits nearly 35% in taxes

Provincial ministers say 'these punitive and unjustified measures are raising construction costs' on both sides of the border

Published Oct 15, 2026  •  Last updated 1 hour ago  •  3 minute read

Employees inspect lumber passing down their high speed trim line at the West Fraser Blue Ridge Lumber mill on Friday, Sept. 12, 2014, near Whitecourt, Alta. Photo by Adam Dietrich /Postmedia Network

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OTTAWA — Industry groups and provincial leaders are united in calling for negotiated settlements after the U.S. Department of Commerce increased import taxes on Canadian softwood lumber to nearly 35%.

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While that number is lower than the 45% announced by U.S. officials last August, the news comes as the U.S. Department of Commerce sets its latest combined anti-dumping and countervailing duty rate at 24.75%.

Paired with existing 10% Section 232 tariffs, Canadian softwood lumber will now face a total tax burden of 34.75% when entering the U.S. market.

“Commerce determined that softwood lumber from Canada was being unfairly subsidized at rates ranging from 12.12% to 16.82%,” read a Commerce Department statement issued last week.

“These final rates are, on average, larger than the final subsidy rates determined in the previous administrative review but in line with Commerce’s preliminary results from April 2025. Notably, the final rate for non-selected companies, which applies to most Canadian companies, increased to 14.63%, up from 6.74% determined in the previous administrative review.”

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In July, the U.S. Commerce Department issued a decision on anti-dumping duties, finding that Canadian wood was being dumped into the U.S. at rates ranging between 9.95% and 35.53%.

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Duties hurting Canada and US, Queen’s Park says

The United States relies heavily on Canadian softwood lumber, as domestic supply cannot keep up with demand.

About a quarter of all softwood lumber used in the U.S. comes from Canada, while 75% to 80% of the wood imported by American firms comes from Canadian mills.

Trade organizations, including the National Association of Home Builders (NAHB), have frequently warned that tariffs on Canadian lumber are driving up American homebuilding costs.

In a joint statement, Ontario’s Associate Forestry Minister Kevin Holland, Natural Resources Minister Mike Harris and Economic Development Minister Vic Fedeli said the duties are unjustified and hurting workers, businesses and communities in both Canada and the United States.

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“These punitive and unjustified measures are raising construction costs and making life more expensive for American families,” the statement read.

“While the decision to decrease the duty rate to 24.75% may suggest some relief to softwood lumber producers, Ontario remains firm in our position that these duties are unwarranted, not supported by evidence and making life more expensive for American families and businesses.”

The three ministers are calling on U.S. officials to eliminate all softwood lumber duties and tariffs and work toward a fair agreement that provides long-term certainty on both sides of the border.

Canadian wood vital to U.S. construction: lumber council

In a statement, the BC Lumber Trade Council (BCLTC) expressed disappointment with the decision.

“The combined weight of duties and tariffs continues to place a significant burden on Canadian lumber producers,” said Council Interim President Kim Haakstad.

“For nearly a decade, this dispute has put jobs, mills and forestry communities across B.C. under pressure.”

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The council says the U.S. cannot meet its own demand for spruce-pine-fir (SPF) lumber and relies heavily on imports to fill the gap.

SPF and Southern Yellow Pine (SYP,) the council maintains, are not interchangeable.

While both types of wood are widely used in home construction, SPF is preferred for floor joists, wall studs and roof trusses because it is easier to work with and holds its shape better. SYP, meanwhile, is the industry standard for outdoor uses such as decks, fences and structures exposed to the ground.

Echoing the concerns raised by Queen’s Park, the council says a fair, negotiated agreement is the best solution for both Canada and the U.S.

“Lumber crosses our shared border because builders on both sides need it,” Haakstad said.

“Our producers compete fairly in a market-driven system, and these duties are unjustified. It’s time to end this dispute.” 

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