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Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →U.S. duties on Canadian softwood lumber are not one uniform tariff. A shipment may face separate antidumping (AD) and countervailing (CVD) cash-deposit rates tied to its exporter and producer, and it may also fall under separate tariff measures. The confirmed sixth-review rates took effect in 2025; the seventh-review figures reported in 2026 are preliminary and do not take effect. An importer must check the shipment’s product scope, parties, entry date, and applicable measures before estimating its duty bill.
What the U.S. duties are—and why there are two
The U.S. Department of Commerce administers Canadian softwood lumber AD and CVD orders as distinct trade remedies. AD rates address dumping; CVD rates address subsidies. They are calculated and published separately, can differ by company, and may change through administrative reviews. A combined AD/CVD figure is simply the sum of those two rates; it is not necessarily the shipment’s complete tariff burden.
Commerce explains that administrative reviews determine duties assessed on past entries and establish prospective estimated-duty cash-deposit rates. A deposit collected when lumber enters the United States is therefore not necessarily the final amount assessed for that entry.
Which confirmed sixth-review rates took effect?
Global Affairs Canada’s current softwood-lumber page reports amended sixth-review company rates and effective dates. The following combined amounts are AD plus CVD only; they exclude any separate tariff that may apply to a shipment.
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| Exporter group | AD rate | CVD rate | Combined AD/CVD | Rate status |
|---|---|---|---|---|
| Canfor | 35.47% | 12.12% | 47.59% | Sixth-review amended rates; AD took effect July 29, 2025, and CVD took effect August 12, 2025. Canada’s page notes an AD amendment on September 11, 2025. |
| West Fraser | 9.65% | 16.82% | 26.47% | Sixth-review amended rates; AD took effect July 29, 2025, and CVD took effect August 12, 2025. |
| All Others | 20.53% | 14.63% | 35.16% | Sixth-review amended rates; AD took effect July 29, 2025, and CVD took effect August 12, 2025. |
These are review-specific rates, not a universal rate for every Canadian mill or entry. Commerce’s August 2025 announcement described a 14.63% non-selected-company CVD rate applying to most Canadian companies in that review, and summarized sixth-review AD rates ranging from 9.65% to 35.53%. For a company-specific entry, use the applicable Commerce cash-deposit instruction rather than assuming the All Others rate applies.
Are the 2026 seventh-review rates in effect?
No. Global Affairs Canada says the seventh-review preliminary rates and June 2026 post-preliminary CVD calculation do not take effect. They should not be treated as the current cash-deposit rates unless a final result has since been published and entered into force. Check the latest final notice and entry instructions for the shipment’s entry date.
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How product scope determines coverage
Whether lumber falls under an order is a legal scope question, not just a tariff-code lookup. Commerce says an order’s scope is defined by the merchandise’s physical and technical characteristics and applicable exclusions; HTSUS classifications are also relevant. Its scope guidance states, “The scope defines the products to which any antidumping and/or countervailing duties may be applied.” Customs and Border Protection uses scope information to identify covered goods and collect deposits.
A classification can help identify a product, but a code by itself does not establish that the product is covered or excluded. The operative order language and any applicable scope rulings govern. This article concerns Canadian softwood lumber trade and does not extend those order findings to all lumber or other wood products.
What other tariff measures may apply?
Other tariff authorities are separate from the AD/CVD orders and have their own product, origin, and timing rules.
- Section 232: A December 31, 2025 U.S. proclamation, published in the Federal Register on January 9, 2026, provides a 10% ad valorem tariff on certain softwood timber and lumber. Whether a particular product is covered depends on the proclamation and applicable tariff provisions.
- Section 122 and Section 301: Global Affairs Canada reports that the temporary 10% global Section 122 tariff expired July 24, 2026. It describes a replacement Section 301 measure on Canadian goods, with CUSMA-compliant goods exempt. The Canadian government says existing AD/CVD and applicable Section 232 duties remain unchanged.
Do not add headline percentages together and call the result a shipment’s total duty without confirming the relevant legal text, product coverage, exclusions, origin treatment, and entry date. The Section 232 and Section 301 descriptions above are not a determination that either measure applies to a particular lumber entry.
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How duties can affect exporters and importers
A higher cash-deposit rate can increase the amount an importer pays at entry and tie up more working capital while the entry awaits final assessment. That can affect an exporter’s cross-border sales and negotiations, but the rate alone does not establish the final liability or prove that the cost will be passed through to a buyer. The precise financial effect depends on the entry and the commercial arrangement.
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How to check the rate for a shipment
- Identify the parties. Record the foreign producer and exporter for the goods, then determine which company-specific or non-selected-company cash-deposit instruction applies.
- Check the merchandise against the order. Compare the product’s physical and technical characteristics with the operative scope language and exclusions. Do not rely on an HTSUS code alone.
- Match the entry date to the result in force. Distinguish final or amended final results from preliminary and post-preliminary results, and check for later final notices or entry instructions.
- Review separate tariff authorities. Confirm whether Section 232 or the described Section 301 measure covers the product and entry, and verify any applicable origin qualification or exclusion.
- Confirm entry-specific treatment. Commerce directs readers who know the foreign producer to its Customs Liaison Unit for rate questions. A customs broker or trade counsel can help verify the classification, scope, deposit application, and other measures for an actual entry.
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