HS code 391520 tariff rate
Of polymers of styrene
HS 391520
Of polymers of styrene
Current US base rate (structured schedule)
Free
Effective date
No dated action in the last 30 days. The base rate above stands until a new action takes effect.
Duty stack summary
- Base rate (MFN): Free on most lines.
- Additional duties noted: none on these lines in the structured schedule.
- Recent trade actions: none in the last 30 days of scanned notices touches this category.
Summary
HS 391520 covers of polymers of styrene. The structured schedule lists a base rate of Free on most lines in this category. No trade action in the last 30 days of scanned notices touches this category. Confirm the classification of your specific goods with your broker.
What this rate means for an importer
Free means the schedule lists no base duty on most lines in this category. Duty is figured on the customs value of the goods, so a Free base rate adds nothing at that step. Extra duties from trade actions can still apply, so a Free base rate does not promise zero total duty.
The base rate is only the starting point. Extra duties from trade actions sit on top of it and change more often than the base schedule. Before you set a price or sign a purchase order, run the code through the free lookup to see recent actions.
Tariff lines in this category
Showing 1 of 1 lines. Match your goods to the closest line.
| Line | Base rate | Goods |
|---|---|---|
| 3915.20.00.00 | Free | Of polymers of styrene |
More in HS chapter 39 (Plastics and articles thereof)
Nearby codes: 391290 391310 391390 391510 391530 391590 391610
Nearby chapters: Chapter 38 - Chapter 40
HS 391520 questions
What is the US base rate for HS 391520?
On most tariff lines in this category, the structured schedule lists Free. Free means the schedule lists no base duty on most lines in this category. Duty is figured on the customs value of the goods, so a Free base rate adds nothing at that step. Extra duties from trade actions can still apply, so a Free base rate does not promise zero total duty.
Does the base rate tell the full story for HS 391520?
No. Extra duties from trade actions can sit on top of the base rate and change often. Use the free lookup to see recent actions for this code before you commit to a price.
Where does this rate come from?
The base rate comes from the structured US tariff schedule, read through the Tariff Wire HS lookup. Recent actions come from published Federal Register notices from the last 30 days. Each lookup links its official source.
Can I use this page to classify my goods?
No. This page covers the HS-6 product category. The exact 8 or 10 digit classification of your goods, and what you owe on a specific entry, is work for you and your licensed customs broker.
How do I get an alert if the rate for HS 391520 changes?
Tariff Wire Pro watches this category every day and sends one plain-English alert when a change touches it, with the official source linked. That monitoring is part of the paid plan.
Check the live rate for HS 391520
Schedules change. Run this code through the free lookup to see the current base rate and any recent trade actions.
Look up HS 391520Get an email the day this rate changes
Monitoring is part of Pro. Sign up once and Tariff Wire watches HS 391520 for you every day, with the official source linked in each alert.
Get alerts for HS 391520General information only, for educational and planning purposes. This is not legal advice and not a customs classification determination for your specific goods or entries. Tariff classification of your products should be confirmed with your licensed customs broker. Rates shown as 'detected' are taken from official notice text and are not confirmed; rates shown as 'confirmed' come from structured HTS data, which updates days to weeks after legal effective dates. Last updated 2026-09-28 from the structured US tariff schedule. Rates change; confirm with your broker before you act.