CSMS 65936570·Trade policy·August 15, 2025·View on csms.cbp.gov ↗

GUIDANCE: Section 232 Additional Steel Derivative Tariff Inclusion Products

Plain-English explanation

CSMS 65936570 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (trade policy), published on August 15, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "GUIDANCE: Section 232 Additional Steel Derivative Tariff Inclusion Products". 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 # 65936570 - GUIDANCE: Section 232 Additional Steel Derivative Tariff Inclusion Products U.S. Customs and Border Protection sent this bulletin at 08/15/2025 07:26 PM EDT Cargo Systems Messaging Service CSMS # 65936570 - GUIDANCE: Section 232 Additional Steel Derivative Tariff Inclusion Products The purpose of this message is to provide guidance on adding additional steel derivative products to Annex I of the Harmonized Tariff Schedule of the United States (HTSUS) under Proclamation 10896. BACKGROUND On February 10, 2025, the President issued Proclamation 10896, “Adjusting Imports of Steel into the United States,” under Section 232 of the Trade Expansion Act of 1962, as amended (19 U.S.C. 1862). This proclamation imposes a 25 percent ad valorem tariff on certain imports of steel articles and derivative steel articles from all countries, effective June 23, 2025. See 90 FR 11249 (March 5, 2025). In Proclamation 10896, the President authorized and directed the Secretary of Commerce to publish modifications to the HTSUS to reflect the amendments and effective dates in the proclamation. Effective August 18, 2025, in accordance with “ Adoption and Procedures of the Section 232 Steel and Aluminum Tariff Inclusions Process ” the Commerce Department will be adding additional steel derivative products to Annex I of the HTSUS to be subject to Section 232 duties. Further, Annex II makes technical corrections to the Harmonized Tariff Schedule of the United States. ENTRY FILING INSTRUCTIONS This guidance provides instructions for importers, brokers, and filers on submitting entries to U.S. Customs and Border Protection (CBP) on certain steel derivative imports, effective with respect to goods entered for consumption, or withdrawn from warehouse for consumption, on or after 12:01 a.m. Eastern Daylight Time on August 18, 2025. The following steel derivative products added to subdivisions (m/n/t/u) of U.S. Note 16 of the Harmonized Tariff Schedule of the United States (HTSUS) are subject to Section 232 duties. Review the attached steel HTS list to see the additional products (identified in bold) added to the below Chapter 99 HTSUS: Report the Section 232 steel derivative duties applicable to goods classified in the eight-digit subheadings and the 10-digit statistical reporting number listed in the attached steel HTS list (hereinafter the “newly-added goods”) under the following Chapter 99 HTSUS numbers: 9903.81.90 (all countries except the United Kingdom): Derivative iron or steel products listed in subdivision (m): the import duty is on the value of the steel content. 50 percent ad valorem duty on the value of the steel content. 9903.81.91 (all countries except the United Kingdom): Derivative iron or steel products listed in subdivision (n) (certain steel derivative articles not classified in Chapter 73 subject to Section 232): the import duty is on the value of the steel content. 9903.81.91 also applies to newly-added goods that were admitted to a U.S. foreign trade zone and granted “privileged foreign status” before August 18, 2025, and entered for consumption, or withdrawn from warehouse for consumption, on or after August 18, 2025. 50 percent ad valorem duty on the value of the steel content. 9903.81.97 (UK only): Derivative iron or steel products listed in subdivision (t): the import duty is on the value of the steel content. 25 percent ad valorem duty on the value of the steel content. 9903.81.98 (UK only): Derivative iron or steel products from United Kingdom listed in subdivision (u) (certain steel derivative articles not classified in Chapter 73 subject to Section 232): the import duty is on the value of the steel content. 9903.81.98 also applies to newly-added goods that were admitted to a U.S. foreign trade zone and granted “privileged foreign status” before August 18, 2025, and entered for consumption, or withdrawn from warehouse for consumption, on or after August 18, 2025. 25 percent ad valorem duty on the value of the steel content. 9903.81.92 (all countries, including the UK): Derivative steel or iron products listed in subdivisions including (n) or (u) where the derivative iron or steel product was processed in another country from steel articles that were melted and poured in the United States. 9903.81.92 also applies to newly-added goods that were admitted to a U.S. foreign trade zone and granted “privileged foreign status” before August 18, 2025, and entered for consumption, or withdrawn from warehouse for consumption, on or after August 18, 2025. 0 percent ad valorem duty. See CSMS # 65236374 for steel content reporting instructions. Application of Reciprocal Tariffs under EO 14257 The non-steel content of an article reported on a separate line per the instructions identified in CSMS 65236374, is subject to Reciprocal tariffs under HTS 9903.01.25. The steel content subject to Section 232 duties is not subject to Reciprocal tariffs under HTS 9903.01.33. Drawback No drawback shall be available with respect to the duties imposed pursuant to Proclamation 10896. Consult the Section 232 Tariffs on Steel and Aluminum Frequently Asked Questions ( FAQs ) for additional guidance, including on reporting country of melt and pour, determining the value of steel content and reporting requirements on goods subject to both steel and aluminum duties. For reference, a summary of Section 232 Chapter 99 HTSUS classifications is attached. For questions regarding Section 232 entry filing, contact the Trade Remedy Branch at TradeRemedy@cbp.dhs.gov . If you encounter any errors in filing an entry summary, contact your CBP client representative or the ACE Help Desk. Related messages: CSMS # 65236374, CSMS # 64348411, CSMS # 64384423, CSMS # 64639013, CSMS # 65289012, CSMS # 64384496, CSMS # 64348288, CSMS # 64605146, CSMS # 65405824 Updated steelHTSlist 081525.docx 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 65936570?

CSMS 65936570 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "GUIDANCE: Section 232 Additional Steel Derivative Tariff Inclusion Products". 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 65936570 published?

CBP published CSMS 65936570 on August 15, 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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