# United States tariff line 3911.90.91.10: Thermoplastic > In the United States tariff, line 3911.90.91.10 covers thermoplastic. The general (MFN) duty rate is 6.5%. It falls under HS subheading 3911.90 in heading 39.11 (chapter 39). Source: https://border.bot/countries/united-states/hs-codes/3911909110 Last updated: 9 October 2026 [Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 39](https://border.bot/countries/united-states/hs-codes/39) / [3911.90](https://border.bot/countries/united-states/hs-codes/391190) / [3911.90.91.10](https://border.bot/countries/united-states/hs-codes/3911909110) ## Key facts - Tariff line: 3911.90.91.10 - Covers: Thermoplastic - Duty (MFN): 6.5% - Preferential rates: From free (17 programmes or origins) - Additional duties: None recorded - Restrictions: None recorded - Tariff: [United States](https://border.bot/countries/united-states) - HS subheading: [3911.90](https://border.bot/hs-codes/391190) ## What this line covers In the United States tariff, line 3911.90.91.10 covers thermoplastic. Its legal text is “Thermoplastic”, read under “Other”, “Other”, “Other” and “Other”. ## How it is structured It falls under HS subheading 3911.90 in heading 39.11 (chapter 39). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff. - Chapter 39: Plastics and articles thereof - Heading 39.11: Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms - Subheading 3911.90: Other - Within the subheading: Other - Within the subheading: Other - Within the subheading: Other - Line 3911.90.91.10: Thermoplastic ## Duty The general (MFN) duty rate is 6.5%. The rate is published on 3911.90.91. Duty-free entry applies to goods that qualify under 16 programmes, and to goods from a group of origins (origin group A). - Free: a group of origins (origin group A) (A) - Free: United States-Australia Free Trade Agreement (AU) - Free: United States-Bahrain Free Trade Agreement Implementation Act (BH) - Free: United States-Chile Free Trade Agreement (CL) - Free: United States-Colombia Trade Promotion Agreement Implementation Act (CO) - Free: African Growth and Opportunity Act (D) - Free: Caribbean Basin Economic Recovery Act (E) - Free: United States-Israel Free Trade Area (IL) - Free: United States-Jordan Free Trade Area Implementation Act (JO) - Free: United States-Korea Free Trade Agreement Implementation Act (KR) - Free: United States-Morocco Free Trade Agreement Implementation Act (MA) - Free: United States-Oman Free Trade Agreement Implementation Act (OM) - Free: Dominican Republic-Central America-United States Free Trade Agreement (P) - Free: United States-Panama Trade Promotion Agreement Implementation Act (PA) - Free: United States-Peru Trade Promotion Agreement Implementation Act (PE) - Free: United States-Mexico-Canada Agreement (S) - Free: United States-Singapore Free Trade Agreement (SG) ## In other countries No other national tariff on border.bot has live lines under 3911.90 yet. - [The Harmonized System text for 3911.90](https://border.bot/hs-codes/391190) ## Other lines under 3911.90 - [3911.90.10.00](https://border.bot/countries/united-states/hs-codes/3911901000) Elastomeric - [3911.90.15.00](https://border.bot/countries/united-states/hs-codes/3911901500) Poly(nitrilomethanetetraarylnitrilo- [2,4,6-tris-(1-methyethyl)-1,3- phenylene]]-2,6-bis(1-methylethyl)- phenyl]-ω-[[[2,6-bis(1-methylethyl)- phenyl]amino]methylene]amino carbodiimide or 2,4-diisocyanate-1,3,5-tris(1-methyl- ethyl) homopolymer with polyethylene - [3911.90.25.00](https://border.bot/countries/united-states/hs-codes/3911902500) Other - [3911.90.35.00](https://border.bot/countries/united-states/hs-codes/3911903500) 1,1'-Bis(methylenedi-4,1-phenylene)- 1H-pyrrole-2,5-dione, copolymer with 4,4'-methylenebis(benzeneamine); and Hydrocarbon novolac cyanate ester - [3911.90.45.00](https://border.bot/countries/united-states/hs-codes/3911904500) Other - [3911.90.70.00](https://border.bot/countries/united-states/hs-codes/3911907000) Chlorinated synthetic rubber - [3911.90.91.50](https://border.bot/countries/united-states/hs-codes/3911909150) Thermosetting - Previous line: [3911.90.70.00](https://border.bot/countries/united-states/hs-codes/3911907000) Chlorinated synthetic rubber - Next line: [3911.90.91.50](https://border.bot/countries/united-states/hs-codes/3911909150) Thermosetting ## Frequently asked questions ### What does tariff line 3911.90.91.10 cover in the United States tariff? In the United States tariff, line 3911.90.91.10 covers thermoplastic. ### What is the general (MFN) duty on 3911.90.91.10 in the United States? The general (MFN) duty rate is 6.5%. The rate is published on 3911.90.91. ### Which preferential rates apply to 3911.90.91.10? Duty-free entry applies to goods that qualify under 16 programmes: the United States-Australia Free Trade Agreement, the United States-Bahrain Free Trade Agreement Implementation Act, the United States-Chile Free Trade Agreement, the United States-Colombia Trade Promotion Agreement Implementation Act, African Growth and Opportunity Act, Caribbean Basin Economic Recovery Act, the United States-Israel Free Trade Area, the United States-Jordan Free Trade Area Implementation Act, the United States-Korea Free Trade Agreement Implementation Act, the United States-Morocco Free Trade Agreement Implementation Act, the United States-Oman Free Trade Agreement Implementation Act, the Dominican Republic-Central America-United States Free Trade Agreement, the United States-Panama Trade Promotion Agreement Implementation Act, the United States-Peru Trade Promotion Agreement Implementation Act, the United States-Mexico-Canada Agreement and the United States-Singapore Free Trade Agreement, and to goods from a group of origins (origin group A). ## Sources and updates The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. This page was last updated on 9 October 2026. Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling. Official source files: - https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false Machine-readable: https://border.bot/countries/united-states/hs-codes/3911909110.json