CSMS 64044439·Operational·February 7, 2025·View on csms.cbp.gov ↗

Harmonized System Update (HSU) 2505 and 2506

Plain-English explanation

CSMS 64044439 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on February 7, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "Harmonized System Update (HSU) 2505 and 2506". CSMS messages are the operational layer between Commerce determinations and at-the-border collections: when Commerce publishes a new rate, scope ruling, or instruction, CBP turns it into a CSMS that ACE/ACS systems and brokers act on.

Message body

Full text as published by U.S. Customs and Border Protection

CSMS # 64044439 - Harmonized System Update (HSU) 2505 and 2506 U.S. Customs and Border Protection sent this bulletin at 02/07/2025 04:45 PM EST Cargo Systems Messaging Service CSMS # 64044439 - Harmonized System Update (HSU) 2505 and 2506 Harmonized System Update (HSU) 2505 was created on February 3, 2025, and contains 32 Harmonized Tariff Records and 84 ABI records. This update includes the China/Hong Kong HTS updates. For more information on the China/Hong Kong updates please refer to CSMS # 63988468 . Harmonized System Update (HSU) 2506 was created on February 7, 2025, and contains 5 Harmonized Tariff Records and 13 ABI records. This update includes a correction to the end date for HTS 9903.01.23. Questions or concerns with the Harmonized System Update should be directed to the HTS admin at HTSadmin@cbp.dhs.gov . Update your subscriptions, modify your password or e-mail address, or stop subscriptions at any time on your Subscriber Preferences Page . You will need to use your e-mail address to log in. If you have questions or problems with the subscription service, please contact subscriberhelp.govdelivery.com . This service is provided to you at no charge by U.S. Customs and Border Protection . Privacy Policy | GovDelivery is providing this information on behalf of U.S. Department of Homeland Security, and may not use the information for any other purposes. Powered by Privacy Policy | Cookie Statement | Help

Frequently asked questions

What is CSMS 64044439?

CSMS 64044439 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Harmonized System Update (HSU) 2505 and 2506". CSMS bulletins are the operational instructions CBP issues to brokers, importers, and ACE filers covering rate changes, system updates, scope guidance, and other day-to-day customs-operations changes.

When was CSMS 64044439 published?

CBP published CSMS 64044439 on February 7, 2025. The bulletin's instructions are typically operative as of the publication date unless the body specifies a different effective date.

Is the CBP CSMS the legally binding instruction?

Yes — for at-the-border filing and entry collection. CSMS messages translate Commerce's Federal Register determinations into operational CBP instructions that ACE/ACS systems and brokers execute. The Federal Register notice is the underlying legal authority; the CSMS is the operational implementation. Both should be read together when reconciling a rate or scope change.

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