HS Code 3907.91: Polyesters; n.e.c. in heading no. 3907

What HS code 3907.91 covers

HS code 3907.91 classifies polyesters; n.e.c. in heading no. 3907, unsaturated, in primary forms. It is a subheading of heading 3907 (Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms), in chapter 39 (Plastics and articles thereof), section VII of the Harmonized System. These six digits are identical in every country that uses the HS.

Classification path

Section VII

Chapter 39 Plastics and articles thereof

Heading 3907 Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms

Subheading 3907.91 Polyesters; n.e.c. in heading no. 3907, unsaturated, in primary forms

Import duty for 3907.91

United States Free

Base MFN rate only. Section 301 and 2025 IEEPA tariffs can stack on top for goods from China.

Source: HTSUS / CBP

European Union Look up in TARIC

Erga-omnes (third-country) MFN rate. Import VAT of 17 to 27 percent by country, and any anti-dumping measures, apply separately.

Source: TARIC

Imported this in 2024 or 2025?

Courts voided some of the tariffs importers paid on goods like this. You may be owed money back. The audit is free and we only get paid when you do.

Check what you're owed →

Related codes in heading 3907

Not quite the right fit? These subheadings sit under the same heading and are the most common alternatives to 3907.91.

Confirm the code for your exact product

A 6-digit subheading still covers a range of products. The wrong code at the border can mean overpaying duty, a delayed shipment, or a penalty. Describe your exact item and HS Mate confirms whether 3907.91 is right, with the duty rate and an audit trail your customs broker can accept.

Run a free HS code lookup → · Browse all of chapter 39 →