US Section 338 · 50% additional duty on Canadian goods
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Talks collapsed Aug 21. The US put a 50% extra duty on about $20B of Canadian goods under three proclamations. CUSMA does not protect you — the duty applies even to goods with a valid certificate of origin.
Energy, potash, fish, critical minerals, civil aircraft parts, and anything already under Section 232 (steel, aluminum, copper, autos, softwood lumber) — those carry their own tariffs instead.
Canada's counter-tariffs start September 8 on US steel, dairy, appliances, farm equipment, pulp & paper, and electronics. The product list isn't published yet. The US says it will respond to that.
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A 50% additional duty on selected Canadian goods, imposed by presidential proclamation under Section 338 of the Tariff Act of 1930 after trade talks collapsed on August 21, 2026. It applies to goods entered on or after 12:01 a.m. ET August 22, 2026, under HTSUS headings 9903.03.12, 9903.03.13 and 9903.03.14, and stacks on top of any existing duty.
No. Section 338 applies regardless of origin claims, so a valid CUSMA certificate of origin does not remove the 50% duty on listed goods.
No. Softwood lumber is covered by Section 232 wood tariffs and anti-dumping/countervailing duties instead. Section 338 explicitly excludes goods already subject to Section 232. Hardwood lumber, plywood, veneer, MDF, OSB and wood flooring are on the Section 338 list.
No. Steel, aluminum, copper, passenger vehicles, light trucks and auto parts are excluded because they already carry Section 232 tariffs. The one vehicle exception is motorcycles over 800cc, which are listed.
Maple syrup and maple sugar classify under heading 1702, and several 1702 lines are on the dairy annex (9903.03.13). Whether your product is hit depends on its exact 8-digit HTSUS line. Search '1702' above to see every covered line.
Yes. Natural honey (0409.00.00) is on the motor vehicle annex (9903.03.14) and carries the 50% additional duty.
Yes. Hockey sticks (9506.99.25) are on the alcohol annex, and ice skates, golf clubs, fitness equipment and other sporting goods under heading 9506 are on the motor vehicle annex.
Yes. Beer (2203), wine and icewine (2204), vermouth (2205), cider and mead (2206) and spirits including whisky, rye, gin, vodka and liqueurs (2208) are on the alcohol annex (9903.03.12).
No. The dairy annex targets milk powders, whey, lactose, casein, albumins and milk-based drinks, not cheese, butter or yogurt.
Energy products, potash, fish and seafood, critical minerals, semiconductors, patented pharmaceuticals, civil aircraft and parts meeting General Note 6, and anything already subject to Section 232 tariffs (steel, aluminum, copper, autos, softwood lumber and their derivatives).
Canada announced dollar-for-dollar retaliation on US steel, dairy, appliances, farm equipment, pulp and paper, and electronics starting September 8, 2026. The product list has not been published yet. Sign up above to get it the day it drops.
The US importer of record pays it to US Customs at entry. In practice the cost is passed to the US buyer, absorbed by the Canadian seller, or split, which is why both sides of the border need to know whether a product is listed.