The United States has imposed additional 50% duties on many Canadian products.

The US proclamations announced on 20 July 2026

According to Construction Dive, the US President signed several proclamations on 20 July 2026 imposing an additional 50% duty on a broad range of Canadian products . The publication states that these duties fall under Section 338 and may apply even to goods eligible for preferential treatment under the USMCA .

The research file also contains a Federal Register notice concerning the implementation of additional duties on products from Canada under Executive Order 14193 . It also contains a White House page dedicated to Executive Order 14325, which refers back to Executive Order 14193 of 1 February 2025 .

The available extract from Construction Dive does not set out the tariff lines covered by the proclamations announced on 20 July 2026 . The file provided does not contain the full text of the proclamations of 20 July 2026 reported by Construction Dive .

The legal basis cited and the reference to the USMCA

Construction Dive states that the US President signed several proclamations on 20 July 2026 introducing an additional 50% duty on a broad range of Canadian products . The same article attributes these duties to Section 338 and states that they may apply to goods eligible for preferential treatment under the USMCA .

Executive Order 14325 refers back to Executive Order 14193 of 1 February 2025, by which the US administration had declared a national emergency linked to fentanyl and other illicit drugs, and then imposed an additional ad valorem duty of 25% on certain Canadian articles and 10% on certain Canadian energy products or energy resources . The text also states that Executive Order 14231, cited in Executive Order 14325, provided that the additional duties under Executive Order 14193 did not apply to Canadian articles qualifying for duty-free entry under the USMCA, the English designation of CUSMA .

A Federal Register notice concerns the implementation of additional duties targeting products from Canada pursuant to Executive Order 14193 .

The US measures currently in force as listed by the DGDDI

The DGDDI publishes a page entitled "US customs duties: US and European tariff measures currently in force", shown as updated on 20 July 2026 . It provides a summary of the measures applicable to products originating in the European Union imported into the United States, following US decisions taken in February 2026 .

According to that page, the US Supreme Court declared unlawful on 20 February 2026 the baseline customs duties introduced by the Trump administration under the International Emergency Economic Powers Act . The DGDDI states that, in response, the US President signed several executive orders imposing new tariff measures from 24 February 2026 .

The summary refers to a global 10% customs duty under Section 122 of the Trade Act of 1974, except for exemptions listed in the annex to the proclamation of 20 February 2026 . It also refers to additional duties introduced under Section 232 of the Trade Expansion Act of 1962 on steel, aluminium, copper, certain vehicles, timber and pharmaceutical products . The DGDDI example uses HTSUS code 73.24.10.00 for "sinks and wash basins of stainless steel" .

Canadian sources and the current documentary position

Customs Notice 25-10 of the Canada Border Services Agency concerns the United States Surtax Order (2025-1) and its application to certain goods originating in the United States . In its "Application" section, the notice describes a surtax of 25% of the value for duty for certain goods imported into Canada and originating in the United States . It states that this surtax was introduced by Canada "in response to the U.S.’ imposition of tariffs on goods imported into the U.S. from Canada" .

Canada.ca publishes a page entitled "Complete list of U.S. products subject to counter tariffs", dedicated to the full list of US products subject to Canadian tariff countermeasures . The file also includes a Federal Register notice concerning the implementation of additional duties on products from Canada pursuant to Executive Order 14193 . FederalRegister.gov states that its XML version is not an official legal edition and that each document includes a link to the corresponding official PDF on govinfo.gov .

The available extract from Construction Dive states that the proclamations signed on 20 July 2026 impose an additional 50% duty on a "broad range of Canadian products" . It does not provide a detailed annex of the Canadian products concerned .