3913.90.20

8-digit subheading

Polysaccharides and their derivatives

This is a 8-digit subheading — a category, not a filing code. Pick the more specific code beneath it that best matches your goods; only a 10-digit statistical code can be used on a customs entry.

Duty rates

Ad valorem rate — a straight percentage of the declared customs value.

Duty rates for HTS 3913.90.20
Rate	Value and what it means
General rate (Column 1)	5.8%Column 1 general Applies to most trading partners — the standard "normal trade relations" rate.
Special rate (Column 1)	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)Trade programs The country letters in parentheses are free trade agreement and preference programs. If your goods qualify under one of them, that rate replaces the general rate. A — GSP — excluding certain countries AU — Australia FTA BH — Bahrain FTA CL — Chile FTA CO — Colombia TPA D — African Growth and Opportunity Act (AGOA) E — Caribbean Basin Initiative (CBI) IL — Israel FTA JO — Jordan FTA KR — Korea FTA (KORUS) MA — Morocco FTA OM — Oman FTA P — CAFTA-DR PA — Panama TPA PE — Peru TPA S — USMCA SG — Singapore FTA
Column 2 rate	50%Non-NTR Reserved for the small group of countries that do not have normal trade relations with the US (currently Cuba, North Korea, Russia and Belarus). Almost no importer uses this column — if you are shipping from anywhere else, ignore it.
Unit of quantity	— How CBP expects the quantity to be reported on the entry summary.

Estimate duty for this code

Where this sits in the schedule

The tariff schedule is read top-down: each line inherits the wording of the categories above it.

Natural polymers (for example, alginic acid) and modified natural polymers (for example, hardened proteins, chemical derivatives of natural rubber), not elsewhere specified or included, in primary forms: > Other:

Codes within Polysaccharides and their derivatives

2 more specific lines fall under 3913.90.20.

Chapter 39: Plastics and Articles Thereof

Browse every code in this chapter to compare neighbouring classifications.

View Chapter 39

Source: USITC Harmonized Tariff Schedule, 2026 Basic Edition, Revision 16. Rate text is reproduced verbatim from the official export; category paths and duty estimates are derived.

Data loaded August 18, 2026.Check this chapter on hts.usitc.gov Report an error with this code How this data is built