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CSMS # 64347680 – UPDATE: Harmonized System Update (HSU) 2509

Posted on by Staff Writer
13
Mar
Harmonized System Update (HSU) 2509 was created on March 7, 2025, and contains 217 Harmonized Tariff records and 651 ABI records. HSU 2509 includes the recent Canada and Mexico tariff updates.

Reminder:
As of March 7, 2025, the temporary exclusion from the additional ad valorem IEEPA duties in place for in-transit shipments has ended. Consequently, HTS 9903.01.23 is no longer available for merchandise entered for consumption, or withdrawn from warehouse for consumption, after 12:01 a.m. ET on March 7, 2025. All shipments that are country of origin China and Hong Kong are required to submit the 9903.01.24 tariff as well as remit payment of the additional 20% duty, unless the shipment meets the other exclusions (donation, information materials, Chapter 98).

For more information on the Canada, Mexico and China tariff updates, refer to the following CSMS message: 64336037.

Questions or concerns about the HSU should be directed to HTSadmin@cbp.dhs.gov.
Staff Writer