Tariff reference › Chapter 39 › 3913.90.20
HTS 3913.90.20 — Polysaccharides and their derivatives
The current US import duty for Polysaccharides and their derivatives (HTS 3913.90.20) — the base rate, any Section 301/232/122 surcharge that applies, and what's changed recently.
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: › Polysaccharides and their derivatives
Current US duty rate
| Column 1 (General / MFN) | 5.8% |
|---|---|
| Special (FTA programs) | Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) |
| Column 2 (other) | 50% |
No Chapter 99 (Section 301/232/122) cross-reference on this line; origin-specific surcharges may still apply — check the calculator.
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Programmatic access: the full duty stack (base + surcharges + MPF/HMF for a given origin & value) is at /duty?code=3913.90.20&origin=&value=. Current as of USITC 2026HTSRev13 (synced 2026-07-29).