U.S. Trade Terms Leave 10–15% Auto Tariffs on the Table While Canadian Lumber Duties Stay Near 45%: Sources

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Canada and the United States are nearing a tariff deadline with a potential compromise taking shape, but the emerging terms would fall well short of restoring the largely tariff-free relationship businesses once expected under CUSMA. Sources familiar with the negotiations say Washington has considered reducing tariffs on CUSMA-compliant Canadian automobiles and parts to somewhere between 10% and 15%, down from the current 25% framework. Softwood lumber appears to be a far tougher file. U.S. tariffs and trade-remedy duties on a large share of Canadian lumber currently add up to roughly 45%, and sources say Washington has shown little appetite for cutting them in the immediate negotiations. With additional 50% tariffs on a separate group of Canadian products scheduled for August 19, both governments are trying to determine how much compromise is possible without locking major industries into a permanently higher-cost trading relationship.

A Lower Auto Rate Would Still Rewrite the Rules of North American Trade

A 10% to 15% tariff on Canadian vehicles might look like significant relief when compared with the current 25% levy, but that comparison obscures how dramatically the trading environment has changed. Under the existing U.S. automotive tariff regime, Canadian vehicles that qualify for CUSMA treatment face the 25% tariff on their non-U.S. content rather than necessarily on the vehicle’s entire value. The latest discussions reported by Global News contemplate a lower tariff for CUSMA-compliant autos and parts, although no final rate or agreement has been announced. In other words, the numbers being discussed represent negotiating possibilities, not enacted policy.

That distinction matters because the auto industry built investment decisions around increasingly integrated North American production and preferential access under CUSMA. A permanent tariff of even 10% would effectively turn preferential treatment into discounted protectionism rather than free trade. Automakers would have to determine whether paying the tariff is cheaper than relocating additional production, sourcing more components in the United States or changing vehicle lineups. For factories working on narrow margins and multiyear product cycles, a seemingly modest percentage can influence where the next generation of vehicles is assembled. The dispute therefore is not simply about whether 10% is better than 25%; it is about whether tariffs become an ordinary feature of continental manufacturing.

Canada’s Auto Exposure Makes Even 10–15% a Serious Cost

Few Canadian industries are as exposed to the American market as vehicle manufacturing. Federal figures show that more than 90% of Canadian-made vehicles and roughly 60% of Canadian-made automotive parts are exported to the United States. Ottawa estimates the sector supports more than 500,000 workers across the broader economy, including about 125,000 direct manufacturing jobs, and contributes more than $16 billion annually to Canadian GDP. Canada produced more than 1.2 million passenger vehicles in 2025, making continued access to U.S. buyers fundamental to the economics of domestic assembly plants.

That dependence explains why Canadian auto communities are wary of treating a lower tariff as an automatic victory. A plant does not operate in isolation: stamping facilities, tool-and-die companies, logistics firms, parts suppliers and local service businesses often depend on the same assembly operation. Statistics Canada reported that motor vehicle manufacturing output at the end of 2025 remained 2.9% below its March 2025 level, before the first U.S. vehicle tariffs took effect. Vehicle and parts exports also experienced sharp monthly swings during the tariff period. A 10% to 15% rate would relieve some immediate pressure, but it would still leave Canadian plants competing with an added border cost that did not exist in the traditional North American free-trade model.

Detroit’s Own Carmakers Are Warning About the Same Supply-Chain Problem

The concern is not confined to Canadian manufacturers or unions. Detroit automakers themselves have warned the Trump administration that proposed changes to North American content rules could add billions of dollars to their costs. Reuters reported that Washington has pushed for vehicles to contain at least 50% U.S.-made content to receive more favourable tariff treatment while also considering an increase to the existing 75% North American content requirement. Internal estimates from two automakers suggested the combination could add at least $2 billion annually in costs for each Detroit manufacturer.

Those companies are already absorbing substantial tariff bills. General Motors expects gross tariff-related expenses of between $2.5 billion and $3.5 billion this year, while Ford has estimated its net tariff hit at about $1 billion. The political irony is hard to miss: tariffs intended to encourage U.S. production can also increase costs for vehicles already assembled in America because engines, electronics, metals and other components move repeatedly through a continental supply network. Detroit companies have also complained that competitors importing vehicles from markets including Japan, South Korea and Europe can face a flat 15% tariff, creating situations in which a vehicle assembled within North America may carry a heavier tariff burden than one arriving from overseas.

Lumber Is the Hardest Gap—and the 45% Figure Needs Context

Softwood lumber appears to be an even more difficult negotiating problem. Sources cited by Global News said U.S. negotiators were not interested, at least at the current stage, in reducing the collection of tariffs and duties that puts the burden on much Canadian lumber at roughly 45%. The precise rate varies by producer. Global Affairs Canada records an amended “all others” combined anti-dumping and countervailing duty rate of 35.16% from the sixth U.S. administrative review. A separate Section 232 tariff of 10% applies to imported softwood lumber, producing a combined burden of approximately 45.16% for lumber subject to the general rate. Individual producers can face higher or lower trade-remedy rates.

That difference is more than technical bookkeeping for forestry communities. Natural Resources Canada describes Canadian softwood lumber as a highly export-oriented industry, historically exporting nearly 70% of its production, with the United States taking most exports. A 2026 federal forest-sector assessment put the U.S. share of Canadian softwood lumber exports at about 86%. That concentration leaves sawmills particularly vulnerable when duties climb. Unlike an automaker that may gradually reorganize sourcing, a sawmill cannot move the forest closer to its customer. Producers instead face difficult choices involving output reductions, market diversification, temporary curtailments or absorbing part of the tariff through lower margins.

Ottawa’s Concessions Go Beyond Tariffs

The negotiation involves much more than lowering U.S. import taxes. Reuters has reported that Canada has considered addressing several longstanding American complaints in return for tariff relief. The possible concessions have included removing Canadian retaliatory tariffs on U.S. automobiles, reaching an understanding over the American interpretation of dairy tariff-rate quota allocation and encouraging the return of American alcohol to provincial liquor-store shelves. Canada, in exchange, has been pressing Washington for relief from U.S. tariffs affecting strategic sectors, particularly steel and aluminum.

Some elements are much easier for Ottawa to deliver than others. Alcohol distribution is largely a provincial responsibility, which means the federal government cannot simply order every provincial liquor authority to restock American products. Global News reported that Washington has continued to press for U.S. alcohol to return to provincial shelves and that several premiers could be open to the move if Canada obtains sufficient concessions. This makes the negotiating package unusually complicated: federal tariff policy, provincial retail decisions, agricultural market-access rules and industrial duties are being traded across different jurisdictions. Even if negotiators agree on the economics, implementing every part of a package could require cooperation from governments outside the room.

The August 19 Deadline Gives Washington Enormous Leverage

The urgency comes from a separate U.S. tariff measure scheduled to take effect on August 19. President Donald Trump’s administration has announced additional 50% tariffs covering nearly US$20 billion worth of Canadian goods, according to the U.S. Trade Representative’s office. Reuters calculates that the affected trade represents roughly 5.2% of Canadian exports to the United States. Canadian reporting has expressed the value at approximately C$28 billion. Unlike earlier broad U.S. tariff measures that preserved exemptions for qualifying CUSMA goods, this new action would hit products that would normally receive preferential treatment under the agreement.

That approaching deadline changes the negotiating balance. Canada is not simply bargaining over whether existing auto, metal and lumber tariffs should fall; it is simultaneously trying to prevent another major layer of tariffs from arriving. Reports during the past week have painted an uneven picture. One Canadian government source told Reuters that both countries wanted a deal before August 19 and that negotiations were progressing, while another report a day later said substantial gaps remained. Those accounts are not necessarily contradictory. Trade negotiations can advance technically while remaining far apart politically. What matters for businesses is that until an agreement is announced and implemented, the threatened 50% tariff remains the policy they must prepare for.

This Is Becoming a Test of CUSMA, Not Just a Tariff Bargain

The dispute is unfolding against a much larger question about the future of continental free trade. During the July 1, 2026 joint review of CUSMA, the United States declined to extend the agreement for another 16-year term in its current form. That decision did not terminate the pact. CUSMA remains in effect, but the countries now move into annual reviews unless they eventually agree on an extension. Without such an agreement, the existing treaty is scheduled to expire in 2036. Reuters has reported that roughly US$1.6 trillion in annual trade moves among the three economies under the broader North American framework.

That backdrop makes the current tariff negotiations unusually consequential. A deal that prevents the August 19 tariffs while leaving permanent levies on autos, metals and lumber could stabilize trade in the short term without restoring the old rules. For businesses, the bigger concern may become whether tariffs are temporary negotiating instruments or a permanent price of access to the U.S. market. A 10% to 15% Canadian auto tariff would certainly be easier to absorb than 25%, while preventing a new 50% tariff shock would remove an immediate threat. Yet if lumber remains near 45% and other strategic industries continue to face sectoral duties, Canada and the United States would still be operating far from the integrated, preferential trading system CUSMA was designed to preserve.

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