U.S. imposes additional 50% Section 338 tariffs on nearly $20B of Canadian imports effective 30 days after July 20, 2026.

1. What changed

On July 20, 2026, the President exercised authority under Section 338 of the Tariff Act of 1930 (19 U.S.C. 1338) to impose additional tariffs of 50 percent on imports from Canada. Three separate Section 338 actions were taken, targeting Canadian imports as a response to Canada’s allegedly discriminatory treatment of U.S. exports of motor vehicles, alcoholic beverages, and dairy products. The measures cover nearly $20 billion in Canadian-origin imports and will take effect 30 days after July 20, 2026.

The announcement indicates that detailed Section 338 actions have been issued for:

• Motor vehicles
• Alcoholic beverages
• Dairy products

These actions will specify the exact product scope and tariff implementation, likely via additional duties applied on top of existing MFN/USMCA rates, potentially through Chapter 99 or other special tariff provisions.

2. Affected products

The statement identifies the following sectors as the basis for the retaliation, but does not list specific HTS codes:

• Motor vehicles
• Alcoholic beverages
• Dairy products

However, the 50% tariffs are described as applying to “nearly $20 billion in imports from Canada,” which suggests that the scope may extend beyond only these three product categories, depending on how the implementing actions are structured.

Because the text provided does not include specific HTS subheadings or Chapter 99 numbers, importers must consult the referenced Section 338 actions for:

• The exact HTS codes and product descriptions subject to the additional 50% duty
• Any exclusions or carve-outs
• Any staging, quotas, or licensing conditions

3. Rate changes

• New additional duty: 50% ad valorem on covered Canadian-origin imports.
• Previous rate: Not specified in the text; the 50% is an additional tariff on top of the normal applicable duty rate (e.g., USMCA preferential rate or MFN), as implemented in the forthcoming Section 338 notices.
• Total trade affected: Nearly USD 20 billion in imports from Canada.

Without the implementing documents, precise old→new rate comparisons by HTS code cannot be provided, but importers should assume a substantial increase in landed cost (an additional 50 percentage points of duty) for covered items.

4. Dates

• Presidential action date: July 20, 2026.
• Effective date of additional tariffs: 30 days after July 20, 2026.
• Effective date (calculated): August 19, 2026, unless otherwise specified in the implementing documents.
• Duration/expiration: No sunset or end date is mentioned in the statement; measures should be treated as open-ended until modified, suspended, or terminated by subsequent action.

5. Required actions for importers, brokers, and compliance teams

a) Identify exposure

• Immediately review your import portfolio of Canadian-origin goods, focusing on:
• Motor vehicles and parts
• Alcoholic beverages (beer, wine, spirits, etc.)
• Dairy products (milk, cheese, butter, powders, etc.)
• Once the Section 338 actions are published, map the listed HTS codes against your current and planned imports from Canada.

b) Review implementing documents

• Obtain and review the three Section 338 actions referenced in the statement:
• Section 338 action on motor vehicles
• Section 338 action on alcohol
• Section 338 action on dairy
• Confirm for each:
• Exact HTS codes and product descriptions covered
• Whether the 50% duty applies to all Canadian-origin goods in those codes or only certain subcategories
• Any exclusions, thresholds, or quota-type mechanisms
• Any special Chapter 99 or other tariff provisions that must be declared on entry.

c) Update classification and entry processes

• Ensure that all affected Canadian-origin products are correctly classified under the HTS to avoid misapplication of the new tariffs.
• Coordinate with customs brokers to:
• Implement any new Chapter 99 or special tariff numbers required for Section 338 duties
• Adjust entry templates and ABI programming to capture the additional 50% duty
• Confirm that effective dates are correctly applied to entry dates and dates of importation.

d) Financial and supply chain planning

• Model the cost impact of an additional 50% duty on affected Canadian-origin imports.
• Consider:
• Renegotiating supplier pricing or terms
• Shifting sourcing to non-Canadian suppliers where feasible
• Adjusting inventory strategies to manage entries before or after the effective date (while ensuring no circumvention).

e) Contract and pricing review

• Review existing contracts with Canadian suppliers and downstream customers to determine:
• Who bears responsibility for increased duties
• Whether price-adjustment or force majeure clauses apply
• Update future contracts to address potential changes in Section 338 or other trade remedies.

f) Compliance and recordkeeping

• Maintain documentation demonstrating correct origin determination (Canada vs. other countries) and correct HTS classification.
• Monitor for any CBP guidance on entry filing, refunds, or protests related to these Section 338 measures.

g) Monitor for changes

• Track subsequent USTR, White House, and CBP announcements for:
• Publication of the full Section 338 actions with HTS details
• Any exclusion processes or product-specific relief
• Any escalation, suspension, or modification of the 50% tariffs.

6. References

The statement references the following documents (URLs not provided in the text, but they should be available on official U.S. government sites):

• Section 338 action on motor vehicles (USTR/White House publication)
• Section 338 action on alcohol (USTR/White House publication)
• Section 338 action on dairy (USTR/White House publication)
• White House Fact Sheet on the Section 338 tariffs on Canada

Compliance teams should locate these documents on:

• Office of the U.S. Trade Representative (USTR) website: https://ustr.gov
• The White House or Federal Register websites for official legal text and HTS implementation details.

7. HTS metadata

The provided text does not list any specific HTS headings, subheadings, or Chapter 99 numbers. Accordingly:

• Affected HTS codes explicitly stated: []
• Importers must rely on the forthcoming Section 338 actions and any associated Federal Register notices to obtain the precise HTS coverage.

In summary, importers of Canadian-origin goods—especially in the motor vehicle, alcoholic beverage, and dairy sectors—should prepare for an additional 50% duty on covered products starting around August 19, 2026, and must promptly review the detailed Section 338 actions to determine exact HTS coverage and implement necessary compliance and cost-mitigation measures.