50% duty imposed on certain Canadian goods over dairy dispute
A proclamation imposes an additional 50% ad valorem duty on certain products of Canada. The action is framed as a Section 338 response to Canada's dairy TRQ allocation measures for cheeses of all types under USMCA.
What this affects
CanadaThe update
This proclamation imposes an additional 50% ad valorem duty on certain products of Canada identified in Annex II. The duty applies to goods entered for consumption, or withdrawn from warehouse for consumption, on or after 12:01 a.m. eastern time on August 19, 2026.
The proclamation states that the action is taken under Section 338 of the Tariff Act of 1930. It finds that Canada discriminates against US commerce with respect to dairy by making retailers ineligible to use the USMCA tariff-rate quota for cheeses of all types, while retailers may access the comparable CETA quota for EU cheese of all types.
The additional duty is in addition to other applicable duties, taxes, fees, exactions, and charges, except as otherwise provided in the proclamation and Annex I. It does not apply to articles subject to Section 232 duties, or to articles, excluding unmanned aircraft, subject to the WTO Agreement on Trade in Civil Aircraft.
The proclamation also directs HTSUS modifications in Annex II and says the changes continue unless expressly reduced, modified, or terminated. Goods subject to the duty that enter a US foreign trade zone on or after the effective date generally must be admitted in privileged foreign status, except articles eligible for domestic status.
Impact
For importers of covered Canadian products, this measure can materially increase landed cost because the 50% duty is additional to other charges unless an exception applies. It also adds compliance work around product coverage, FTZ handling, and checking whether Section 232 or civil aircraft treatment changes applicability.
What to watch
The source text provided does not include Annex I or Annex II, so the covered products and HTSUS lines are not visible here. CBP is also authorized to issue guidance and technical HTSUS corrections, which could affect implementation details.
How to prepare
- 1Identify covered Canadian SKUs
Match product records to the proclamation annexes and entry classifications once the tariff lines are confirmed.
- 2Model the added duty cost
Estimate the 50% ad valorem impact on upcoming entries, margins, and cash flow.
- 3Review Section 232 overlap
Confirm whether any affected items are already subject to Section 232 and therefore excluded here.
- 4Check FTZ admission status
Verify whether covered goods entering an FTZ must be handled in privileged foreign status.
- 5Coordinate with customs broker
Confirm entry timing, tariff treatment, and any CBP implementation guidance before the effective date.
Sources
- Imposing Additional Duties To Offset Canadian Discrimination Against the Commerce of the United States With Respect to Dairy · Federal Register · July 23, 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.