BUSINESS

US Hits Canada with Mushroom Tariffs Amid Trade Dispute

19.05.2026 4,38 B 5 Mins Read
US Hits Canada with Mushroom Tariffs Amid Trade Dispute

WASHINGTON — The United States has imposed countervailing duties on fresh mushrooms imported from Canada after a U.S. Department of Commerce investigation was initiated. The Canadian mushroom industry has labeled this investigation and its findings as “deeply flawed.”

The recent update, published in the federal register on Monday, indicates that most fresh mushroom imports from Canada will face tariffs of 2.84%. Specific companies were affected: Champ's Fresh Farms Inc. will incur a tariff rate of 1.62%, while Farmers' Fresh Mushrooms Inc. faces a higher tariff of 4.97%. Furthermore, separate anti-dumping duties are anticipated to be introduced later this month.

The preliminary findings of the Commerce investigation allege that Canadian mushroom producers benefit from unfair government subsidies. In response, Ryan Koeslag, CEO of Mushrooms Canada, stated that Canadian growers are not engaged in unfair trade practices and are not receiving special treatment. Koeslag criticized the justification provided by the Commerce Department, arguing that it is based on standard agricultural tax treatments, such as provincial sales tax exemptions available to farmers broadly.

Koeslag emphasized that “treating broad-based agricultural tax measures as unfair subsidies is contrary to common sense” and unjustly punishes Canadian mushroom growers who utilize programs accessible to the agricultural sector in numerous countries. He further clarified that according to U.S. trade law, for a subsidy to be countervailed, it must meet specific legal criteria, which he believes have not been satisfied.

The investigation was initiated in January after a complaint from the U.S.-based Fresh Mushrooms Fair Trade Coalition. This group asserted that tax exemptions in Canada result in unfair subsidies for Canadian mushrooms and highlighted the increase in Canadian mushroom imports despite relatively stagnant domestic consumption in the U.S.

Giorgio Mushroom Co., a participant in the U.S. coalition, welcomed the duties as a significant step forward. Mark Currie, the CEO of Giorgio Mushroom, noted that American mushroom growers have endured significant pressure due to unfairly subsidized mushroom imports that disrupt fair competition and threaten domestic production.

William Pellerin, a partner in international trade at McMillan LLP, mentioned that the ongoing investigation will not examine the specific agricultural subsidies that U.S. producers receive, even if they are similar to those available to Canadian companies. Although the preliminary subsidy amount determined by the investigation is low, it is noteworthy that the scrutiny into the Canadian mushroom industry remains active.

Traditionally, Canadians associate countervailing and anti-dumping duties with lumber tariffs, which have also seen an increase over the past year, predating the Trump administration. Pellerin remarked that Commerce investigations, such as the current one concerning fresh mushrooms, are typically independent of U.S. administration policies regarding tariffs.

The Canadian mushroom industry has avenues to contest the countervailing duties through appeal mechanisms provided under the Canada-U.S.-Mexico Agreement (CUSMA). It's important to note that countervailing and anti-dumping duties differ from broader tariff initiatives pursued by former President Donald Trump, who has implemented tariffs on various sectors, including steel, aluminum, automobiles, and cabinetry.

However, Trump's strategy to realign global trade through tariffs may inspire more agricultural industries in the U.S. to follow the lead of the mushroom coalition and seek Commerce investigations against foreign imports. Pellerin suggested that the trend is not limited to the United States, as Canadian associations are also increasingly pursuing cases against agricultural products from various countries.

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