U.S. Lowers Canadian Softwood Lumber Duties
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The U.S. Department of Commerce set antidumping and countervailing duty rates on Canadian softwood lumber at a combined 24.75%, down from about 35.16%, following its annual review. The new rates take effect after publication in the Federal Register; a separate 10% tariff means the reported total charges on imports will be 34.75%.

The U.S. Department of Commerce has lowered its antidumping and countervailing duties on Canadian softwood lumber to a combined 24.75%, down from about 35.16%, according to the National Association of Home Builders. The final rates were issued October 13 and will take effect after publication in the Federal Register; a separate 10% tariff means the combined charges described in the report total 34.75%.

The rates stem from Commerce’s seventh administrative review of U.S. antidumping and countervailing duty orders covering Canadian softwood lumber. The department began the review the previous year and released preliminary findings on April 13, before issuing its final rates on October 13, according to the report by Hardware Retailing.

The 24.75% figure covers the two trade-duty categories: antidumping and countervailing duties. It is not the total of all charges described in the report. A separate 10% tariff, imposed by the Trump administration after a Section 232 national security investigation, brings the stated total to 34.75%.

The final rates are not yet in effect based on the information provided. They are scheduled to apply following publication in the Federal Register. The source does not give a publication date or specify how the revised rates will be applied to particular importers or shipments.

At a glance
updateWhen: Final rates issued October 13, 2026; ef…
The developmentCommerce issued final lower duty rates on Canadian softwood lumber after its annual review, with implementation pending Federal Register publication.

How the Rate Change Affects Lumber Costs

The lower duty rate reduces one component of the charges applied to Canadian lumber entering the United States. However, the separate 10% tariff remains part of the reported calculation, so the reduction in the two trade duties does not bring the stated combined rate down to 24.75%.

Canadian softwood lumber is an important input for U.S. homebuilding and other construction. Changes in import charges can affect the costs faced by lumber importers and buyers, with possible downstream effects for builders and retailers. The source provides no estimate of how much the new rates may change prices, supply or purchasing decisions, so any market impact remains uncertain.

For companies that import the product, the effective date and application details matter: the final rates await Federal Register publication, and the stated combined figure includes a separate tariff. The two measures should not be conflated when comparing the revised duty rate with total charges.

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Commerce Review and Two Trade Measures

The rates were set through an annual administrative review of existing U.S. orders on Canadian softwood lumber. Commerce issued preliminary findings on April 13, then finalized the antidumping and countervailing rates on October 13. The review is the seventh set of administrative reviews for these orders, according to the report.

The duties and the additional tariff are separate measures. The antidumping and countervailing duties are the rates changed in the review; the 10% tariff followed a Section 232 investigation, which concerns national security. The source says that tariff was imposed by the Trump administration but does not provide further details about its scope, duration or any exceptions.

“Total duties on lumber imports are 34.75%.”

— Hardware Retailing report

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Effective Date and Importer Impact

The exact date the revised rates will take effect is not specified; the report says they apply after publication in the Federal Register. The source also does not detail how Commerce will calculate or collect the revised rates for individual companies, or whether specific importers face rates different from the combined figure reported.

It is also unclear whether the separate 10% tariff will change, how long it will remain in force, or whether any exemptions apply. The report gives no forecast for lumber prices, import volumes or construction costs. Those outcomes should not be inferred from the rate change alone.

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Federal Register Publication Sets Timing

The next stated milestone is publication of Commerce’s final rates in the Federal Register. Once publication occurs, the new antidumping and countervailing rates are set to take effect. Importers, builders and lumber buyers will need to assess the final notice for its effective date and any details on how the rates apply.

The available report does not identify a further review date or describe any next steps in the separate Section 232 tariff process. Until additional information is published, the 24.75% trade-duty rate and separate 10% tariff are the figures reported, with the overall 34.75% total subject to the stated calculation and pending implementation of the revised rates.

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Key Questions

What rate did the U.S. set for Canadian softwood lumber?

Commerce set the combined antidumping and countervailing duty rate at 24.75%, down from about 35.16%, according to the National Association of Home Builders.

Why does the report give a total rate of 34.75%?

The reported total adds a separate 10% tariff to the 24.75% antidumping and countervailing duty rate. The tariff followed a Section 232 national security investigation.

When do the new rates take effect?

The rates take effect after publication in the Federal Register. The source does not provide a publication date.

What review produced the lower rates?

Commerce issued the rates after its seventh administrative review of antidumping and countervailing duty orders on Canadian softwood lumber. Preliminary findings were released April 13, and final rates were issued October 13.

Will the lower duties reduce lumber prices?

The source does not forecast prices or quantify effects on builders, retailers or consumers. The revised duties lower one part of the reported import charges, while the separate 10% tariff remains included in the stated 34.75% total.

Source: rss

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