In a Cargo Systems Messaging Service (CSMS) bulletin published on June 29, 2026, U.S. Customs and Border Protection (CBP) provided guidance on how importers who have been granted Commerce Department (DOC) import adjustment offset for Section 232 duties on automobile and medium and heavy-duty vehicle (MHDV) parts.

These import adjustment offsets were established by Presidential Proclamation 10925 and 10984 and can only be issued by the DOC. Import adjustment offsets that are granted will include a limit on the amount granted and usage will need to be tracked by the importer to ensure that they do not exceed the limit they are assigned. Only the duty assessed under Section 232 can be offset.

The CSMS bulletin provides guidance on the classifications that need to be used to properly claim the offset. The DOC offset license number will need to be provided to CBP on the entry summary line.

Importers can claim an offset license on Post Summary Corrections (PSCs) to past entries where Section 232 duties were paid.

CSMS #69087399 and links to relevant Federal Register Notices can be found here:
https://content.govdelivery.com/bulletins/gd/USDHSCBP-41e30a7?wgt_ref=USDHSCBP_WIDGET_2

Presidential Proclamation 10925 can be found here:
https://www.whitehouse.gov/presidential-actions/2025/10/adjusting-imports-of-medium-and-heavy-duty-vehicles-medium-and-heavy-duty-vehicle-parts-and-buses-into-the-united-states/

Presidential Proclamation 10984 can be found here:
https://www.whitehouse.gov/presidential-actions/2025/10/adjusting-imports-of-medium-and-heavy-duty-vehicles-medium-and-heavy-duty-vehicle-parts-and-buses-into-the-united-states/