Harmonized System Update (HSU) 2539
Published Nov 5, 2025
Summary
CBP announced Harmonized System Update (HSU) 2539, published October 31, 2025, containing 17 Harmonized Tariff records and 38 ABI records, including updates related to Section 232 duties on medium- and heavy-duty vehicles, vehicle parts, and buses effective November 1, 2025.
Summary is machine-generated at the linking layer for discovery only. Refer to the source bulletin for authoritative guidance.
CSMS 66727301 · full bulletinRelated bulletins
New Validation for Import Adjustment Offset for Section 232 Duties for Automobile and Medium and Heavy-Duty Vehicle Parts to Deploy July 18, 2026 – ACE CATAIR Error Dictionary Updated
Jul 17, 2026
GUIDANCE: Section 232 Copper Smelt and Cast Reporting Requirements
Jul 15, 2026
GUIDANCE: Further Adjusting the Tariff Regimes for Imports of Aluminum, Steel, and Copper Into the United States
Jun 5, 2026
GUIDANCE: Implementation of Certain Tariff-Related Elements of the Trade and Security Agreement Between the Taipei Economic and Cultural Representative Office and the American Institute in Taiwan
May 27, 2026
Harmonized System Update (HSU) 2610
May 12, 2026