What you need to know, Canadian Surtax Updates Effective September 1st, 2025

Updates have been made to the following customs notices changing or eliminating surtaxes that previously came into force starting with the first order on March 4th, 2025.

Customs Notice – CN 25-10 – United States Surtax Order

• This has been repealed effective September 1st, 2025, removing surtax on all goods listed in this order.
• If applicable importers may apply for refunds, as outlined in the Corrections and re-determinations and refunds section of this notice.

Link to Customs Notice: https://www.cbsa-asfc.gc.ca/publications/cn-ad/cn25-10-eng.html

Customs Notice – CN 25-11- United States Surtax Order (Steel and Aluminum 2025)

• This notice has been updated to remove some of the classifications that were covered in the original order.
• There has also been updates to the Chapter 98 and 99 items that allow for surtax to be remitted on these goods.
• If applicable importers may apply for refunds, as outlined in the Corrections and re-determinations and refunds section of this notice.

Link to Customs Notice: https://www.cbsa-asfc.gc.ca/publications/cn-ad/cn25-11-eng.html

Customs Notice – CN 25-15 - United States Surtax Order (Motor Vehicles 2025)

• There has also been updates to the Chapter 98 and 99 items that allow for surtax to be remitted on these goods.
• If applicable importers may apply for refunds, as outlined in the Corrections and re-determinations and refunds section of this notice.

Link to Customs Notice: https://www.cbsa-asfc.gc.ca/publications/cn-ad/cn25-15-eng.html Link to full list of HS updates: https://www.canada.ca/en/department-finance/programs/international-trade-finance-policy/canadas-response-us-tariffs/complete-list-us-products-subject-to-counter-tariffs.html Note: CBSA has clarified the apparent disconnect between Prime Minister Carney’s statements and the updates. The exemptions are not based on the ability to claim blanket CUSMA but instead are setup to protect certain business sectors while eliminating the barriers from others. This does not establish any across the board surtax tied to CUSMA exemption qualifications.