9903.05.53 Libya Section 301 Forced Labor: 12.5% Duty Explained

Key Points

• HTS code 9903.05.53 imposes an additional 12.5 percent ad valorem duty on all products of Libya (country code LY) under the Section 301 Forced Labor program, effective July 24, 2026, with no announced end date.
• The duty applies to all Chapter 1 through 97 products of Libyan origin, with no product-specific exclusions noted in the facts as of September 9, 2026.
• The legal authority is the USTR Section 301 Forced Labor Investigation (FLIP) final action dated July 23, 2026, codified in U.S. note 52 of Chapter 99, and announced via CSMS 69326983.
• 9903.05.53 is a Chapter 99 overlay code and rides alongside the regular Chapter 1-97 classification line on every entry; you must report both codes in ACE.
• This code is part of the country-specific Section 301 Forced Labor block running from 9903.05.20 through 9903.05.84, which is entirely separate from the Section 301 Brazil program at 9903.05.01 through 9903.05.09.

On this page

1. What 9903.05.53 is and who must care
2. The Section 301 Forced Labor program and legal authority
3. Product and country scope
4. The 12.5 percent rate and its effective window
5. How 9903.05.53 stacks with other duties
6. How this code appears on a customs entry
7. What importers should do
8. Key references

HTS code 9903.05.53 is the Chapter 99 tariff number that adds a 12.5 percent additional duty on all products of Libya entering the United States, effective July 24, 2026, under the Section 301 Forced Labor action. Any importer, customs broker, or trade attorney handling Libyan-origin goods must classify every entry under both the standard Chapter 1-97 heading and 9903.05.53 from that date forward.

The links in this article go to the primary documents: the USTR final action, the CBP CSMS message, and the official Harmonized Tariff Schedule. Read the source.

What 9903.05.53 is and who must care

9903.05.53 is a Chapter 99 special duty code that overlays an additional 12.5 percent ad valorem duty on top of whatever regular duty rate already applies to a product of Libyan origin. As of September 9, 2026, the rate is 12.5 percent with no announced end date.

Anyone importing goods manufactured in or originating from Libya, as well as the brokers filing their entries and attorneys advising on sourcing decisions, must account for this code immediately. It is not industry-specific or product-specific. The scope covers all Chapter 1-97 products of Libya.

For context on how Chapter 99 overlay codes work alongside your regular commodity classification, see our article HTS Chapter 99 Explained: Why Your Product Has Two Codes.

The Section 301 Forced Labor program and legal authority

The Section 301 Forced Labor Investigation, referred to by USTR as FLIP, is a distinct action from other Section 301 trade remedy proceedings. It targets countries where forced labor practices have been found to distort trade. The country-specific codes generated by this investigation occupy headings 9903.05.20 through 9903.05.84 in Chapter 99 of the Harmonized Tariff Schedule.

Important distinction: Codes 9903.05.01 through 9903.05.09 belong to a separate Section 301 program covering Brazil. Those codes are unrelated to the forced labor investigation. Do not confuse them.

Governing authority

The legal foundation for 9903.05.53 rests on three documents, all of which are cited in the facts as of September 9, 2026:

• USTR FLIP final action, July 23, 2026 - the USTR determination that triggered the duty.
• U.S. note 52, Chapter 99 - the tariff schedule note, specifically U.S. note 52(a), that defines which products and countries fall within each country-specific code, including Libya under 9903.05.53.
• CSMS 69326983 - the CBP Cargo Systems Messaging Service message providing operational guidance to filers on applying the new code in ACE.

Consult the current Harmonized Tariff Schedule at hts.usitc.gov and CBP guidance at cbp.gov for the text of U.S. note 52 and CSMS 69326983 respectively.

Product and country scope

Country coverage

9903.05.53 applies exclusively to products of Libya (ISO country code LY). No other countries are covered by this specific code. Other countries subject to Section 301 Forced Labor duties appear under their own dedicated headings within the 9903.05.20 through 9903.05.84 range. For comparison, see related articles on neighboring codes such as 9903.05.52 Kuwait and 9903.05.46 Iraq.

Product coverage

The scope is intentionally broad. U.S. note 52(a) and the migration data tagged to July 28, 2026, confirm that all Chapter 1-97 products of Libyan origin fall under 9903.05.53. There are no category carve-outs or product-specific exclusions reflected in the facts as of September 9, 2026. If you believe a specific product may be exempt, confirm its status in the current HTSUS or with a licensed broker, because the facts block for this code shows no exclusions.

The 12.5 percent rate and its effective window

The additional duty rate under 9903.05.53 is 12.5 percent ad valorem. This rate became effective on July 24, 2026, the day after USTR published its final action on July 23, 2026. There is no announced end date. The 12.5 percent rate applies to all qualifying Libyan-origin entries presented on or after July 24, 2026.

No phased-in rate, reduced rate, or expiration date appears in the facts as of September 9, 2026. Until USTR or CBP publishes a modification, importers should treat 12.5 percent as the operative rate for all forward planning and duty calculations. Use the CustomsGenius duty calculator to model the landed cost impact alongside other applicable duties.

How 9903.05.53 stacks with other duties

The 12.5 percent under 9903.05.53 is an additional duty. It piles on top of, and does not replace, any of the following that may already apply to a given product:

• The standard MFN (Column 1 General) rate from the product's Chapter 1-97 classification.
• Any applicable antidumping (AD) or countervailing duties (CVD).
• Any other Chapter 99 additional duties that may simultaneously apply to the same goods.

The facts block does not indicate an MFN cap for this code. If you are uncertain whether an MFN cap or any other rate-limiting provision applies to a specific product, verify in the current HTSUS or consult a broker. Never assume the total duty bill is capped at any particular level based solely on this article.

How this code appears on a customs entry

Chapter 99 overlay codes do not stand alone on an entry summary. When filing in ACE, you must report two HTS lines for each affected shipment:

1. The regular Chapter 1-97 classification that describes what the product actually is.
2. 9903.05.53, reported as a second line tied to the same goods, to trigger the 12.5 percent additional duty.

Failure to report 9903.05.53 on entries of Libyan-origin goods presented on or after July 24, 2026, could result in unpaid duties, potential penalties, and post-entry correction obligations. Review CSMS 69326983 at cbp.gov for the specific ACE filing instructions CBP issued when the code became effective.

If you need to audit past entries for compliance gaps, the article ACE Entry Summary Reports: What Every Importer Should Pull walks through the reports most useful for this kind of review.

What importers should do

• Audit open and recent entries. Identify all shipments of Libyan-origin goods with an entry date on or after July 24, 2026, and confirm that 9903.05.53 was reported and the 12.5 percent duty was paid. File post-summary corrections where it was not.
• Update your tariff database and broker instructions. Ensure that any automated classification or broker standing instructions flag Libya (LY) as requiring the 9903.05.53 overlay code on all Chapter 1-97 commodities, effective July 24, 2026.
• Model landed costs. Recalculate the total duty burden, stacking the 12.5 percent against MFN rates and any AD/CVD that apply to your specific products, before making new purchasing or sourcing commitments.
• Monitor for changes. Because no end date has been announced, watch USTR and CBP channels for any modification, suspension, or exclusion process that may be established. The Import Compliance Checklist: The Annual Self-Audit Routine provides a framework for keeping these monitoring tasks systematic.

Key references

• Harmonized Tariff Schedule of the United States, hts.usitc.gov - Official HTSUS, including Chapter 99 and U.S. note 52 governing the Section 301 Forced Labor country codes.
• U.S. Customs and Border Protection, cbp.gov - Source for CSMS 69326983, which provides ACE filing instructions for 9903.05.53.
• Office of the United States Trade Representative, ustr.gov - Issuing authority for the FLIP final action dated July 23, 2026, that created the 12.5 percent duty on Libyan-origin goods.
• Federal Register, federalregister.gov - Publication of record for USTR Section 301 Forced Labor final actions and related Federal Register notices.
• CustomsGenius 2026 Tariff Code Overview - Summary of major Chapter 99 additions and changes effective in 2026.