U.S. Lowers Canadian Softwood Lumber Duties
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The U.S. Department of Commerce finalized antidumping and countervailing duty rates on Canadian softwood lumber at 24.75%, down from about 35.16%, according to the National Association of Home Builders. The new rates take effect after publication in the Federal Register; a separate 10% tariff means the reported total remains 34.75%.

The U.S. Department of Commerce has set antidumping and countervailing duties on Canadian softwood lumber at 24.75%, down from about 35.16%, according to the National Association of Home Builders (NAHB). The lower rates were issued October 13 after an annual review, but they will not take effect until they are published in the Federal Register; a separate 10% tariff leaves the reported combined charge at 34.75%.

The new 24.75% figure combines the antidumping and countervailing duty rates Commerce finalized for the imports covered by its review. The prior rate cited by the NAHB was about 35.16%. The source report does not break out the final rate into separate antidumping and countervailing components or provide country- or company-specific rates.

Commerce began its seventh set of administrative reviews of the U.S. softwood lumber orders last year and released preliminary findings on April 13, according to the report. Its final determination came on October 13. The revised rates become effective following Federal Register publication, so the October 13 announcement does not itself establish the effective date.

The 24.75% duties are not the only U.S. charge described in the report. A separate 10% tariff on timber and softwood lumber, imposed by the Trump administration after a Section 232 national security investigation, brings the stated total duties on lumber imports to 34.75%. The source does not explain how that separate tariff applies to individual shipments or whether its terms have changed.

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

How the Rate Change Affects Lumber Costs

A lower duty rate can change the import charges faced by businesses bringing Canadian lumber into the United States. The reduction from about 35.16% to 24.75% applies to the antidumping and countervailing duties; it should not be read as a 10.41-percentage-point drop in every charge, because the separate 10% tariff remains in the reported total.

For lumber importers, distributors, builders and retailers, the combined 34.75% figure is a relevant cost measure, though the actual effect on a particular transaction may depend on its coverage and timing. The review changes a trade cost applied to a widely used building material, but the source provides no evidence about whether companies will change prices, sourcing, or construction plans as a result.

The timing matters too: the final rates are to take effect after Federal Register publication. Until that step occurs, businesses may need to distinguish between the announced determination and the date on which the revised rates apply. The report does not provide a publication date or detail how the change will affect duties already assessed.

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Commerce’s Seventh Lumber Review

The United States has antidumping and countervailing duty orders covering Canadian softwood lumber imports. Antidumping duties address imports Commerce determines are sold at less than fair value, while countervailing duties address subsidies found to benefit imported goods. The source report identifies the two types of duties but does not provide Commerce’s underlying calculations or findings in this review.

Commerce’s annual administrative review examined the existing orders and proceeded through preliminary findings released April 13 to final rates issued October 13. The outcome is a reduction in the combined rate cited by the NAHB. It is distinct from the separate 10% tariff described as having followed a Section 232 national security investigation; the report says that tariff keeps total duties at 34.75%.

“The final rates will go into effect following publication in the Federal Register.”

— Hardware Retailing report

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Effective Date and Shipment Coverage

The report does not state when the final determination will be published in the Federal Register, so the effective date of the lower rates remains unclear. It also does not identify the detailed rates for individual exporters, explain which shipments are covered, or say how the revised duties apply to entries made before publication.

The source attributes the separate 10% tariff to the Trump administration and a Section 232 investigation but does not provide its legal terms, duration, or any exceptions. It is also not clear from the report whether the 34.75% combined figure applies uniformly across all Canadian softwood lumber imports. No reaction from Canadian officials, lumber producers, importers, or builders is included.

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Federal Register Publication Sets Timing

The next stated milestone is publication of Commerce’s final rates in the Federal Register. That publication will determine when the revised 24.75% antidumping and countervailing duties take effect. Importers and other affected businesses will need the published notice for the operative date and any detailed rate or coverage information.

Until that notice appears, the confirmed development is Commerce’s October 13 final determination, not a specified start date for the lower rates. The separate 10% tariff remains part of the reported 34.75% total; the source gives no indication that it is being altered by the administrative review.

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Key Questions

What rate did Commerce set for Canadian softwood lumber?

Commerce finalized antidumping and countervailing duties of 24.75%, down from about 35.16%, according to the National Association of Home Builders.

When do the lower rates take effect?

They take effect after publication in the Federal Register. The report does not give a publication date or a specific effective date.

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

The reported total adds a separate 10% tariff to the 24.75% antidumping and countervailing duties. The source does not give further detail about how that tariff applies to individual shipments.

Does the new rate apply to every Canadian lumber shipment?

The report does not specify shipment coverage, exporter-specific rates, or exceptions. Those details would need to be checked in Commerce’s final Federal Register notice.

Source: rss

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