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Canada

The most exposed corridor in the world right now. The United States became the first administration ever to use Section 338, and Canada answered within a week.

Critical · Up to 50% into the US

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The duty stack, both directions

Every layer of duty, and the statute each one rests on. Layers marked additive stack on top of each other.

Canada → United States

Up to 50%

§338
50% from 22 Aug 26

Dairy, motor vehicles, alcoholic beverages, wood, paper and hockey equipment. 554 subheadings, about $20bn of annual imports.

Qualifying under USMCA does not exempt goods from this duty. The proclamations set 19 August, then a proclamation of 18 August suspended them for three days to 22 August 2026.

§301
10% from 24 Jul 26

Forced labour tariff, additive. Lower band because Canada operates a forced labour import prohibition.

USMCA originating goods are exempt from this layer.

§232
50% from 4 Jun 25

Steel, aluminium and copper.

§232
0% to 25% from 3 Apr 25

Passenger vehicles and parts. USMCA qualifying vehicles are effectively duty free on their US content.

United States → Canada

15% to 50%

§CA
50% from 8 Sep 26

Steel, aluminium, furniture and clothing.

§CA
25% from 8 Sep 26

Cheese, appliances and some seafood.

§CA
15% from 8 Sep 26

Electronics and tools.

Canada's counter measure covers roughly 700 products worth about $20bn, close to 4.5% of its imports from the United States.

Ottawa paired it with a C$7.5bn support package including interest free loans of C$2.5m to C$5m with 36 month repayment deferral.

Energy and potash sit outside the Section 338 scope.

Canada’s counter measure is worth C$27.6bn, about US$20bn, which is a separate figure from the roughly US$20bn of Canadian goods caught by Section 338. The two numbers are close by coincidence.

Dated changes on this corridor

25 Aug 26Increase
TradeCanadaEffective 8 Sep 26 Link

Canada answers Section 338 with dollar for dollar counter tariffs

Canada imposed duties of 15%, 25% and 50% across roughly 700 products worth C$27.6bn, about US$20bn, close to 4.5% of its imports from the United States. Steel, aluminium, furniture and clothing take 50%. Cheese, appliances and some seafood take 25%. Electronics and tools take 15%. A C$7.5bn support package for affected businesses accompanies the measure, on top of roughly C$25bn already provided.

The C$27.6bn Canadian figure and the roughly US$20bn of Canadian goods caught by Section 338 are close by coincidence. They are different currencies measuring different trade flows in opposite directions.

Source: Department of Finance Canada

22 Aug 26Increase
TradeUnited States Link

First ever use of Section 338 puts 50% on Canadian dairy, vehicles and alcohol

Three proclamations cover 554 subheadings across dairy, motor vehicles, alcoholic beverages, wood, paper and hockey equipment, together about $20bn of annual imports or about 5.2% of the $382bn imported from Canada in 2025. The stated grounds are EU favourable dairy quota access, Canada's 25% retaliatory tariff on United States motor vehicles, and provincial boycotts of United States alcohol. Qualifying under USMCA does not exempt goods.

The three proclamations of 20 July 2026 set an effective date of 19 August. A further proclamation on 18 August suspended the duties for three days, moving the effective date to 12.01am ET on 22 August 2026. Much of the trade press still carries 19 August. Use 22 August.

Source: White & Case

Other corridors in Americas

All 29 corridors →
Where this comes from, and where it could be wrongEvery statute, every document, and the limits

Every rate on this page is a headline rate set by a named statute, taken from the documents below. We do not compute duty for a shipment and this is not a customs calculation.

The statutes these rates rest on

  • Section 232, Trade Expansion Act of 1962. National security. Applies by product, worldwide.
  • Section 301, Trade Act of 1974. Unfair foreign practice. Applies by country, after investigation.
  • Section 338, Tariff Act of 1930. Discrimination against US commerce. Applies by country and product.
  • Section 122, Trade Act of 1974. Balance of payments. Applies worldwide, 150 day limit. Status: expired.
  • IEEPA, International Emergency Economic Powers Act. Declared emergency. Applies worldwide. Status: struck down.

Official document

Independent research

Legal analysis, not the law itself

Where this could be wrong

  • These are headline rates by statute. The rate that actually applies to a consignment is decided by its commodity code, its origin under the relevant rules of origin, and any exclusion in force on the day it lands. Two shipments from the same country can attract different duty.
  • Product level exclusions, quotas and carve outs are not modelled here. Where a proclamation carves out specific subheadings we note it in the scope text, but we do not reproduce annexes.
  • Layers marked additive stack. Where a measure is stayed, suspended or struck down we mark the status, but litigation moves faster than any page and a measure can be revived on appeal.
  • Several of the documents above are law firm alerts. They are usually accurate and usually first, but they are a reading of the measure, not the measure. Where the two differ, the official document wins.
  • If duty on your goods matters commercially, get a binding ruling from the customs authority rather than relying on this or any other summary.

Found something wrong? [email protected].

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