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Canadian Tariff Tracker: Affected Chapters Canadian Tariff Tracker: Affected Chapters

Chapters of the Canadian Customs Tariff captured by Canada’s response to U.S. tariffs
May 14, 2025 3 MIN READ

Update as of April 21, 2025: As the U.S.-Canada trade war continues to evolve, Osler has been keeping a close eye on the latest developments.

  • On March 4, 2025, the first phase of Canada’s retaliatory response came into effect: a 25% surtax on 1256 tariff items representing $30 billion in annual imports from the U.S. (the Phase One surtaxes).
  • On March 13, 2025, in response to the U.S. tariffs on Canadian steel and aluminum products, Canada imposed a 25% surtax on 536 additional tariff items, effective that same day (the Retaliatory Steel and Aluminum surtaxes).
  • On April 9, 2025, in response to the U.S. tariffs on Canadian automobiles, Canada imposed a 25% surtax on non-CUSMA-compliant U.S.-made vehicles and on the non-Canadian and non-Mexican content of CUSMA-compliant U.S.-made vehicles, effective that same day (the Automobile surtaxes).
  • The Canadian government held a public consultation on additional potential counter tariffs on imports from the U.S. (the Phase Two surtaxes). The final results of this public consultation have not yet been released, and Canada’s Phase Two surtaxes have not yet been imposed.  

In response to the tariffs implemented against Canadian goods by the U.S., the Government of Canada is proceeding with a phased approach to retaliation. Please use the below table to identify whether tariff items within a particular chapter of the Canadian Customs Tariff are currently captured by Canada’s response to the U.S. tariffs.

This resource will be updated as more details are released regarding Canada’s response. For more information and commentary, please refer to our Osler Updates on February 3, February 13, February 21 and April 1.

Osler’s Competition, Trade and Foreign Investment group continues to monitor the evolving trade relations between Canada and the U.S., and will release additional commentary on the implications of their trade measures. For the latest insights, we invite you to subscribe to our Updates.


Osler’s Canadian Tariff Tracker is a searchable tool. Please use the search boxes at the bottom of each column, or the general search bar at the top of the table, to browse the Canadian Tariff Tracker.

To limit results to chapters captured by a particular Canadian response, please use the filter option at the bottom of the “Item(s) Captured by Canadian Surtax Orders on U.S. Imports (Currently In Force)” column and select “Yes”.