Navigating U.S. Tariffs

On March 4, 2025, the United States implemented sweeping tariffs on Canadian exports, imposing a 25% duty on all goods and an additional 10% tariff on energy products. Within one day, a reprieve was announced for all auto manufacturers operating in North America under the Canada-U.S.-Mexico agreement (CUSMA). Another day later, the U.S. announced a pause on goods covered under CUSMA—applying to about half of Mexican goods and 63% of Canadian imports—until April 2. Then on March 7, 2025, President Donald Trump announced reciprocal tariffs on Canadian dairy and lumber products being implemented as soon as today or early next week. These measures add significant pressure and confusion on Canadian businesses, especially for small to medium-sized enterprises (SMEs). To help Ontario’s business community, we are gathering information you need to help your business or community adapt and navigate these imposed tariffs.

Please check this page regularly for updates.

Tariff Timeline (2025)

Updates on Tariffs

> News from the Ontario Chamber of Commerce > News from the Government of Ontario > News from the Government of Canada

Updates on Tariffs

> News from the Ontario Chamber of Commerce

August 1, 2025 | Ontario and Michigan chambers call for end to trade uncertainty as U.S.-Canada deadline passes
June 30, 2025 | As Clock Ticks Toward Tariff Deadline, NY and Ontario Business Leaders Urge Resolution
April 16, 2025 | Ontario Chamber Welcomes Historic Legislation to Eliminate Interprovincial Trade Barriers
April 8, 2025 | Infrastructure: A Key Post-Election Priority
April 2, 2025 | Ontario Businesses Face Continued Uncertainty Amid Unstable U.S. Trade Policy
March 19, 2025 | Ontario Business Coalition Recommends Priorities for Ford’s New Government
March 6, 2025 | U.S. Tariff Chaos Hurts Business On Both Sides Of The Border
March 6, 2025 | Canada’s Provincial Chambers of Commerce Recommend Agenda for Premiers
March 4, 2025 | Ontario Chamber of Commerce Condemns U.S. Tariffs: Calls for Immediate Action to Protect Economies on Both Sides of the Border
February 28, 2025 | Ontario Chamber to Premier: Protect Now, Compete for the Future
February 19, 2025 | Two-thirds of businesses bracing for negative impact of U.S. tariffs: Ontario Chamber
February 12, 2025 | Ontario Chamber announces co-chairs of Business and Trade Leadership Coalition
February 3, 2025 | Canada’s Provincial Chambers Unite to Urge Premiers to Dismantle Internal Trade Barriers
January 28, 2025 | Ontario Business Leaders Unite to Counter Tariff Threat, Strengthen Competitiveness
January 20, 2025 | Tariff Threat Remains a Wake-Up Call for Governments, Business: Ontario Chamber

> News from the Government of Ontario

Read all news from the Government of Ontario

Date	Announcement
August 13, 2025	Protect Ontario Financing Program
June 5, 2025	Government Delivering on Mandate to Protect Ontario
May 15, 2025	Ontario’s 2025 Provincial Budget
April 16, 2025	Ontario Unlocking Free Trade Within Canada
April 15, 2025	Protect Ontario
March 19, 2025	Premier Doug Ford Unveils Cabinet to Protect Ontario
March 10, 2025	Ontario Applies 25 Per Cent Surcharge on Electricity Exports to United States
March 10, 2025	Backgrounder: Applying a 25 Per Cent Electricity Surcharge on Exports to United States
February 3, 2025	Ontario’s Progressive Conservative Party’s platform promise following U.S. tariffs threat

> News from the Government of Canada

Read all news from the Government of Canada

Date	Announcement
August 26, 2025	Regional Tariff Response Initiative
August 5, 2025	Prime Minister Carney announces new measures to transform Canada’s softwood lumber industry
July 16, 2025	Prime Minister Carney announces new measures to protect and strengthen Canada’s steel industry
May 29, 2025	Federal Government 2025-2026 Spending Plan
April 30, 2025	Made in Canada, Buying, Selling and Supporting Canadian by the Innovation, Science and Economic Development Canada
April 15, 2025	Canada announces new support for Canadian businesses affected by U.S. tariffs
April 8, 2025	List of vehicle products from the United States subject to 25 per cent tariffs effective April 9, 2025
April 8, 2025	Canada announces entry into force of countermeasures against auto imports from the United States
March 22, 2025	Government launches consultations on trade measures to prevent diversion of steel products into Canada
March 12, 2025	List of products from the United States subject to 25 per cent tariffs effective March 13, 2025
March 7, 2025	Fighting for Canadian workers and businesses
March 4, 2025	List of products from the United States subject to 25 per cent tariffs effective March 4, 2025
March 4, 2025	Canada announces robust tariff package in response to unjustified U.S. tariffs
February 21, 2025	Department of Finance Canada briefs industry stakeholders on the Canada-U.S. economic relationship
February 14, 2025	Department of Finance Canada hosts briefing with industry stakeholders on the Canada-U.S. economic relationship
February 2, 2025	List of products from the United States subject to 25 per cent tariffs effective February 4, 2025
February 2, 2025	Government of Canada to hold a technical briefing on Canada’s response to U.S. tariffs on Canadian goods
February 2, 2025	Government of Canada announces next steps in its response plan to unjustified U.S. tariffs
February 1, 2025	Canada announces $155B tariff package in response to unjustified U.S. tariffs
January 31, 2025	Department of Finance Canada hosts briefing with industry stakeholders on the Canada-U.S. economic relationship
January 24, 2025	Department of Finance Canada officials host second briefing with industry stakeholders on the Canada-U.S. economic relationship
January 16, 2025	Government of Canada launches weekly briefings with industry stakeholders on Canada-U.S. economic relationship

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