HTS Code · Chapter 39 · Updated Oct 26, 2026

3911.90.91Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides

Also written 39119091

HTS Code 3911.90.91 covers any article best defined as Plastics and Articles Thereof Rubber and Articles ThereofPlastics and articles thereofPetroleum 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:Other:Other:Other:Other in the Harmonized Tariff Schedule — covering 2 sub-classifications.

As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from China pay 44% in duties: the 6.5% base rate plus Section 301 – China (25%) and Section 301 – Forced Labor (12.5%).

From China, the total duty on 3911.90.91 last changed on Jul 24, 2026, from 31.5% to 44%. It has changed 2 times since Nov 17, 2025.

Estimated Duty on 3911.90.91

$10,000.00 by ocean, entered Oct 26, 2026

Country of origin

China

Total duty: 44%; $4,400.00 on this shipment
Fees: 0.47%; MPF + HMF · $47.14
Duty + fees: 44.47%; Payable to CBP
Landed cost: $14,447.14; On $10,000.00 customs value

Base duty6.5%
Section 301 – China25%
Section 301 – Forced Labor12.5%
Customs fees0.47%

Chapter 99 lines9903.88.02 Section 301 China: List 29903.05.31 Section 301 Forced Labor – China

6 exemptions could lower this

So could Pharmaceutical products and related appendix. Check them against your real shipment details.

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Base Duty Rates for 3911.90.91

From the Harmonized Tariff Schedule

General Rate of Duty: 6.5%
Special Rate of Duty: Free; AAUBHCLCODEILJOKKRMAOMPPAPESSG
Column 2 (Non-NTR): 2.2¢/kg + 33.5%

Total duty by countryAll 20 →

China44%
Mexico16.5%
Canada16.5%
Vietnam19%
Germany10%

Tariff updates

Recent US tariff actions that name 3911.90.91 or its heading.

Jul 21, 2026 · CBP guidanceUSTR imposes 25% Section 301 tariff on goods of Brazil, with exemptions, from July 22, 2026
Nov 25, 2025 · CBP guidanceUS exempts certain agricultural products from IEEPA reciprocal tariffs

All tariff updates

Tariffs by country · Oct 26, 2026

US Import Duty on HTS 3911.90.91 by Country of Origin

Total duty from China

44%

Base rate plus 2 additional tariffs

Lowest total duty

10%

From Germany, Taiwan and 3 more

Countries with additional tariffs

20 of 20

Section 232, 301 and other Chapter 99 duties

Country of origin	Base rate	Additional tariffs	Total duty
China	6.5%	Section 301 – China25%9903.88.02 Section 301 – Forced Labor12.5%9903.05.31	44%12.5% with Pharmaceutical products and related appendix
Mexico	6.5%	Section 301 – Forced Labor10%9903.05.55	16.5%0% with USMCA
Canada	6.5%	Section 301 – Forced Labor10%9903.05.29	16.5%0% with USMCA
Vietnam	6.5%	Section 301 – Forced Labor12.5%9903.05.84	19%12.5% with Pharmaceutical products and related appendix
Germany	6.5%	Section 301 – Forced Labor3.5%9903.05.39	10%
Japan	6.5%	Section 301 – Forced Labor6%9903.05.49	12.5%
South Korea	6.5%	Section 301 – Forced Labor6%9903.05.71	12.5%
Taiwan	6.5%	Section 301 – Forced Labor3.5%9903.05.76	10%
India	6.5%	Section 301 – Forced Labor10%9903.05.44	16.5%10% with Pharmaceutical products and related appendix
Ireland	6.5%	Section 301 – Forced Labor3.5%9903.05.39	10%
Italy	6.5%	Section 301 – Forced Labor3.5%9903.05.39	10%
Switzerland	6.5%	Section 301 – Forced Labor6%9903.05.74	12.5%
Thailand	6.5%	Section 301 – Forced Labor12.5%9903.05.77	19%12.5% with Pharmaceutical products and related appendix
Malaysia	6.5%	Section 301 – Forced Labor10%9903.05.54	16.5%10% with Pharmaceutical products and related appendix
United Kingdom	6.5%	Section 301 – Forced Labor10%9903.05.81	16.5%10% with Pharmaceutical products and related appendix
France	6.5%	Section 301 – Forced Labor3.5%9903.05.39	10%
Indonesia	6.5%	Section 301 – Forced Labor10%9903.05.45	16.5%10% with Pharmaceutical products and related appendix
Brazil	6.5%	Section 301 – Brazil25%9903.05.01 Section 301 – Forced Labor12.5%9903.05.27	44%37.5% with Pharmaceutical products and related appendix
Bangladesh	6.5%	Section 301 – Forced Labor10%9903.05.26	16.5%10% with Pharmaceutical products and related appendix
Cambodia	6.5%	Section 301 – Forced Labor10%9903.05.28	16.5%10% with Pharmaceutical products and related appendix

Duty from each country, in words

As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from China pay 44% in duties: the 6.5% base rate plus Section 301 – China (25%) and Section 301 – Forced Labor (12.5%). With Pharmaceutical products and related appendix, qualifying goods pay 12.5%.
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Mexico pay 16.5% in duties: the 6.5% base rate plus Section 301 – Forced Labor (10%). With USMCA, qualifying goods pay 0%.
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Canada pay 16.5% in duties: the 6.5% base rate plus Section 301 – Forced Labor (10%). With USMCA, qualifying goods pay 0%.
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Vietnam pay 19% in duties: the 6.5% base rate plus Section 301 – Forced Labor (12.5%). With Pharmaceutical products and related appendix, qualifying goods pay 12.5%.
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Germany pay 10% in duties: the 6.5% base rate plus Section 301 – Forced Labor (3.5%).
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Japan pay 12.5% in duties: the 6.5% base rate plus Section 301 – Forced Labor (6%).
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from South Korea pay 12.5% in duties: the 6.5% base rate plus Section 301 – Forced Labor (6%).
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Taiwan pay 10% in duties: the 6.5% base rate plus Section 301 – Forced Labor (3.5%).
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from India pay 16.5% in duties: the 6.5% base rate plus Section 301 – Forced Labor (10%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Ireland pay 10% in duties: the 6.5% base rate plus Section 301 – Forced Labor (3.5%).
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Italy pay 10% in duties: the 6.5% base rate plus Section 301 – Forced Labor (3.5%).
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Switzerland pay 12.5% in duties: the 6.5% base rate plus Section 301 – Forced Labor (6%).
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Thailand pay 19% in duties: the 6.5% base rate plus Section 301 – Forced Labor (12.5%). With Pharmaceutical products and related appendix, qualifying goods pay 12.5%.
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Malaysia pay 16.5% in duties: the 6.5% base rate plus Section 301 – Forced Labor (10%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from United Kingdom pay 16.5% in duties: the 6.5% base rate plus Section 301 – Forced Labor (10%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from France pay 10% in duties: the 6.5% base rate plus Section 301 – Forced Labor (3.5%).
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Indonesia pay 16.5% in duties: the 6.5% base rate plus Section 301 – Forced Labor (10%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Brazil pay 44% in duties: the 6.5% base rate plus Section 301 – Brazil (25%) and Section 301 – Forced Labor (12.5%). With Pharmaceutical products and related appendix, qualifying goods pay 37.5%.
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Bangladesh pay 16.5% in duties: the 6.5% base rate plus Section 301 – Forced Labor (10%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Cambodia pay 16.5% in duties: the 6.5% base rate plus Section 301 – Forced Labor (10%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.

Duties on goods entered Oct 26, 2026 at the general rate (Column 2 where it applies), with tariff data verified through 2026 HTS Revision 20. Totals are before customs fees (MPF, HMF) and any antidumping or countervailing duties (AD/CVD); with a free account, the calculator checks the AD/CVD cases that may cover your import. Some tariffs and exemptions depend on details such as metal content or end use, which the calculator asks about. See US tariffs for every country.

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New tariff action affects 1 of your imports

3911.90.91from China44% → 54%

Its rate today, if a new 10% tariff were added

Top origins · US imports 2025

Top Origins: Countries the US Imports HTS 3911.90.91 From

In 2025 the US imported $168M of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91 and related codes), up 3% on 2024, mostly from Germany (52%), Canada (12%) and Japan (8%). Each country's total duty today is shown beside its imports.

Country of origin	US imports, 2025	Share	vs 2024	Total duty today
Germany	$87M	52%	11%	10%
Canada	$19M	12%	22%	16.5%0% with USMCA
Japan	$13M	8%	10%	12.5%
France	$10M	6%	24%	10%
South Korea	$7M	4%	47%	12.5%
Italy	$5M	3%	24%	10%
Belgium	$5M	3%	23%	10%
Austria	$4M	2%	37%	10%
Switzerland	$3M	2%	8%	12.5%
Spain	$3M	2%	27%	10%

Source: U.S. Census Bureau, general imports (8-digit group, as Census has no figures for this exact line). Duty on a $10,000 ocean shipment entered today, before customs fees. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Legal notes

Relevant HTS Notes

Official USITC notes that may affect classification under HTS 3911.90.91.

Chapter 39 Notes (includes Section 7 Notes)Plastics and articles thereof

CBP rulings

Related CROSS Rulings for HTS 3911.90.91

CBP classification rulings related to 3911.90.91. Open a ruling to read how Customs classified a similar product.

No rulings found

No CROSS classification rulings were found for HTS code "3911.90.91".

Questions

HTS 3911.90.91 FAQ

Something else? Ask us.

What does HTS code 3911.90.91 cover?

HTS code 3911.90.91 covers petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (Other), classified under Chapter 39 (Plastics and articles thereof) in the US Harmonized Tariff Schedule. The general duty rate is 6.5%. There are 2 more specific sub-classifications under this code.

What is the duty rate for HTS 3911.90.91?

The general (Column 1) rate of duty for HTS 3911.90.91 is 6.5%. Goods that qualify for a trade program can enter at the special rate: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG). The Column 2 rate, for countries without normal trade relations, is 2.2¢/kg + 33.5%. Additional Chapter 99 tariffs, such as Section 301 and Section 232, can apply on top depending on the country of origin.

What is the US tariff on petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from China?

What is the US tariff on petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Vietnam?

As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Vietnam pay 19% in duties: the 6.5% base rate plus Section 301 – Forced Labor (12.5%). Goods that qualify for Pharmaceutical products and related appendix pay 12.5%.

What is the US tariff on petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Mexico?

As of Oct 26, 2026, US imports of petroleum resins, coumarone-indene resins, polyterpenes, polysulfides (HTS 3911.90.91) from Mexico pay 16.5% in duties: the 6.5% base rate plus Section 301 – Forced Labor (10%). Goods that qualify for USMCA pay 0%.

Which country has the lowest US duty on HTS 3911.90.91?

Of the 20 largest sources of US imports, the lowest total duty on HTS 3911.90.91 is 10%, from Germany, Taiwan and 3 more, as of the tariffs in effect on 2026-10-26.

Sources

Primary Sources

The official documents behind the rates and tariffs on this page. Duties are worked out from them as of Revision 20 (2026); check the legal text before you file.