CSMS # 693595344 - GUIDANCE: Section 232 Duties on Imports of Patented Pharmaceutical Articles and Ingredients

U.S. Customs and Border Protection provided guidance on Section 232 duties for imports of patented pharmaceutical articles and ingredients, following Presidential Proclamation 11020 issued on April 2, 2026.

Additional duties apply to patented pharmaceuticals and ingredients effective July 31, 2026 for companies listed in Annex III, and September 29, 2026 for all other companies; generic pharmaceuticals and their ingredients are exempt.

Importers must report applicable Chapter 99 HTSUS classifications for relevant products, with duty rates varying based on product origin, company status, and qualifying agreements.

U.S.-origin pharmaceuticals are exempt from these tariffs, and special provisions apply for free trade agreements, Chapter 98 entries, drawback, and foreign trade zones.

The guidance includes important dates: July 31, 2026 and September 29, 2026 for duty imposition, January 20, 2029 for expiration of certain duty rates, and April 2, 2030 for rate increases.

• Section 232 Pharma HTS List
• Annex III

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