# United States tariff lines under HS 5503.90

> The United States tariff splits HS 5503.90 (synthetic staple fibers, not carded, combed or otherwise processed for spinning) into 2 national lines: 5503.90.10.00 (of vinyon) and 5503.90.90.00 (other). The general (MFN) duty differs by line: free on 5503.90.10.00 and 4.3% on 5503.90.90.00.

Source: https://border.bot/countries/united-states/hs-codes/550390
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 55](https://border.bot/countries/united-states/hs-codes/55) / [5503.90](https://border.bot/countries/united-states/hs-codes/550390)

## Key facts

- HS subheading: [5503.90](https://border.bot/hs-codes/550390)
- National lines: 2
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 55: Man-made staple fibres

## United States lines under 5503.90

The United States tariff splits HS 5503.90 (synthetic staple fibers, not carded, combed or otherwise processed for spinning) into 2 national lines: 5503.90.10.00 (of vinyon) and 5503.90.90.00 (other).

The general (MFN) duty differs by line: free on 5503.90.10.00 and 4.3% on 5503.90.90.00.

- [5503.90.10.00](https://border.bot/countries/united-states/hs-codes/5503901000) Other, Of vinyon. Duty (MFN): free
- [5503.90.90.00](https://border.bot/countries/united-states/hs-codes/5503909000) Other, Other. Duty (MFN): 4.3%

## In other countries

No other national tariff on border.bot has live lines under 5503.90 yet.

- [The Harmonized System text for 5503.90](https://border.bot/hs-codes/550390)

- Previous subheading: [5503.40](https://border.bot/countries/united-states/hs-codes/550340) Synthetic staple fibers, not carded, combed or otherwise processed for spinning
- Next subheading: [5504.10](https://border.bot/countries/united-states/hs-codes/550410) Artificial staple fibers, not carded, combed or otherwise processed for spinning

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 5503.90?

The United States tariff splits HS 5503.90 (synthetic staple fibers, not carded, combed or otherwise processed for spinning) into 2 national lines: 5503.90.10.00 (of vinyon) and 5503.90.90.00 (other).

### What is the duty on HS 5503.90 in the United States?

The general (MFN) duty differs by line: free on 5503.90.10.00 and 4.3% on 5503.90.90.00.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/550390.json