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The U.S. Department of Commerce issued final antidumping and countervailing duty rates totaling 24.75% on Canadian softwood lumber, down from about 35.16%. The new rates take effect after publication in the Federal Register; a separate 10% tariff means the total duties reported on the imports will be 34.75%.

The U.S. Department of Commerce has lowered the antidumping and countervailing duties on Canadian softwood lumber to a combined 24.75%, down from about 35.16%, following its annual review. The revised rates, issued Oct. 13, take effect after publication in the Federal Register; a separate 10% tariff brings the total duties reported on the imports to 34.75%.

The final rates apply to duties imposed under U.S. antidumping and countervailing duty orders covering Canadian softwood lumber. Commerce began its seventh set of administrative reviews of those orders last year and published preliminary findings on April 13, according to Hardware Retailing’s report, which cited the National Association of Home Builders.

The Oct. 13 decision sets the two review-related duties at 24.75% combined. That figure is distinct from the total rate reported for lumber imports: the Trump administration imposed a separate 10% tariff on timber and softwood lumber after a Section 232 national security investigation. Adding that tariff to the review-related duties produces the reported 34.75% total.

The revised duties are not yet described as in effect. The source report says they will become effective following publication in the Federal Register. It does not give a publication date or specify when importers will begin paying the new rates.

At a glance
updateWhen: Final rates issued Oct. 13, 2026; effec…
The developmentCommerce finalized lower antidumping and countervailing duty rates on Canadian softwood lumber after its annual administrative review.

How the Rate Affects Lumber Imports

The reduction changes the U.S. duty burden applied to Canadian softwood lumber, a material used in homebuilding and other construction. A lower rate could reduce the amount assessed on affected imports compared with the previous antidumping and countervailing duty rate, though the separate tariff remains part of the total reported charge.

For lumber importers, builders and retailers, the distinction between the 24.75% review duties and the 34.75% combined total matters when evaluating costs. The final effect on prices, purchasing decisions or construction costs is not established in the source material and will depend on how the duties are applied and on other market conditions.

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The Review Behind the New Rates

Antidumping duties address imports that U.S. authorities determine are sold at less than fair value, while countervailing duties respond to subsidies found to benefit foreign producers. The Commerce Department periodically reviews rates under its duty orders. This decision came from the agency’s seventh administrative review of the orders covering Canadian softwood lumber.

Commerce released preliminary findings on April 13 and issued final rates on Oct. 13, according to the report. The final decision also sits alongside a separate tariff established after a Section 232 national security investigation. These are different measures, which is why the final review rate is lower than the total duties reported on imports.

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Publication Date and Import Effects

The source does not state when the final rates will appear in the Federal Register, so the date importers must use the revised rates remains unclear. It also does not provide a breakdown of the 24.75% rate by company or explain how the final rates compare with the preliminary findings issued in April.

The report gives the 34.75% combined figure by adding the separate 10% tariff to the final review duties. It does not discuss possible exemptions, product-specific treatment or any later administrative or legal challenges. No effects on lumber prices, construction costs or trade volumes are confirmed in the supplied material.

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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 revised antidumping and countervailing duties are due to take effect, according to the report. Importers and other affected businesses will need to consult the published notice for the effective date and any detailed instructions on applying the rates.

Until then, the published report establishes the final review rate but does not establish that it is already being collected. Further information about implementation, company-specific rates or changes to the separate 10% tariff was not included in the source material.

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Key Questions

What rate did Commerce 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 report.

Why is the total duty reported as 34.75%?

The 34.75% figure includes the 24.75% review-related duties plus a separate 10% tariff on timber and softwood lumber imposed after a Section 232 investigation.

When do the revised rates take effect?

The rates take effect after publication in the Federal Register. The source report did not give a publication date.

Does the lower rate mean lumber prices will fall?

The supplied report does not confirm any effect on lumber prices. The lower review-related rate changes the duty burden, but the separate tariff remains and market-price effects are not specified.

Source: rss

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