Import ban replaces 50% duty for some Canadian motor vehicles
This proclamation excludes certain Canadian motor vehicle products from importation into the United States starting September 29, 2026. It applies to products listed in the annex that were already subject to the additional duties imposed under Proclamation 11048.
What this affects
CanadaThe update
This proclamation excludes certain products of Canada from importation into the United States. It applies to products identified in the annex to the proclamation that are currently subject to the additional ad valorem duties imposed under Proclamation 11048.
The action is taken under section 338 of the Tariff Act of 1930. The proclamation states that the covered products move from the additional duty treatment under Proclamation 11048 to an import ban, while other products subject to Proclamation 11048 are otherwise unaffected.
The import ban applies to goods imported on or after 12:01 a.m. eastern time on September 29, 2026. Products covered by the ban that were imported, but not yet entered for consumption, or withdrawn from warehouse for consumption, before that time remain subject to the 50 percent duty rate established by Proclamation 11048. The proclamation also authorizes CBP to issue implementing rules, guidance, instructions, determinations, and any needed HTSUS modifications through Federal Register notice.
The proclamation includes a severability provision. If the import ban is invalidated in whole or in part as to any import, the 50 percent ad valorem duty under Proclamation 11048 applies to that import instead.
Impact
For affected Canadian goods, this changes the consequence from a higher duty to a complete bar on importation after the effective time. That can force immediate sourcing and logistics changes, while goods already imported before the cutoff may still face the 50 percent duty, affecting landed cost and cash flow.
What to watch
The proclamation relies on an annex to define the covered products, and CBP may make additional HTSUS modifications or technical corrections by later Federal Register notice. It is also easy to misread this as replacing all Canada duties under Proclamation 11048, but the text says other products under that proclamation are otherwise unaffected.
How to prepare
- 1Match SKUs to the annex
Identify whether any imported items fall within the listed Canadian products covered by the ban.
- 2Review import timing
Separate goods arriving before and on or after the effective time because treatment differs.
- 3Model duty and disruption exposure
Account for the 50 percent duty on pre-cutoff goods and a potential import stop for covered later shipments.
- 4Confirm origin support
Keep origin records ready in case CBP reviews whether goods are products of Canada.
- 5Coordinate with customs broker
Check for CBP implementation guidance, HTSUS updates, and entry handling details.
Sources
- Excluding Certain Canadian Products From Importation Into the United States in Response to Continued Discrimination Against the Commerce of the United States With Respect to Motor Vehicles · Federal Register · September 14, 2026
- Trump Expands Illegal Section 338 Tariffs Against Canadian Imports - and Bans Some Entirely · Reason Magazine · September 9, 2026
We summarize published reporting and official notices. Always confirm rates and dates against the Federal Register or your customs broker before acting on them.