# United States tariff lines under HS 2809.20

> The United States tariff splits HS 2809.20 (phosphoric acid and polyphosphoric acids) into 4 national lines: 2809.20.00.10 (containing less than 65 percent available diphosphorus pentaoxide (P2O5) equivalents), 2809.20.00.20 (other), 2809.20.00.30 (other) and 2809.20.00.40 (polyphosphoric acids). Every United States line under 2809.20 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/280920
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 28](https://border.bot/countries/united-states/hs-codes/28) / [2809.20](https://border.bot/countries/united-states/hs-codes/280920)

## Key facts

- HS subheading: [2809.20](https://border.bot/hs-codes/280920)
- Duty (MFN): Free
- National lines: 4
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes

## United States lines under 2809.20

The United States tariff splits HS 2809.20 (phosphoric acid and polyphosphoric acids) into 4 national lines: 2809.20.00.10 (containing less than 65 percent available diphosphorus pentaoxide (P2O5) equivalents), 2809.20.00.20 (other), 2809.20.00.30 (other) and 2809.20.00.40 (polyphosphoric acids).

Every United States line under 2809.20 is free of general (MFN) duty.

- [2809.20.00.10](https://border.bot/countries/united-states/hs-codes/2809200010) Phosphoric acid and polyphosphoric acids, Phosphoric acid, Fertilizer grade, Containing less than 65 percent available diphosphorus pentaoxide (P2O5) equivalents. Duty (MFN): free
- [2809.20.00.20](https://border.bot/countries/united-states/hs-codes/2809200020) Phosphoric acid and polyphosphoric acids, Phosphoric acid, Fertilizer grade, Other. Duty (MFN): free
- [2809.20.00.30](https://border.bot/countries/united-states/hs-codes/2809200030) Phosphoric acid and polyphosphoric acids, Phosphoric acid, Other. Duty (MFN): free
- [2809.20.00.40](https://border.bot/countries/united-states/hs-codes/2809200040) Phosphoric acid and polyphosphoric acids, Polyphosphoric acids. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 2809.20 yet.

- [The Harmonized System text for 2809.20](https://border.bot/hs-codes/280920)

- Previous subheading: [2809.10](https://border.bot/countries/united-states/hs-codes/280910) Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined
- Next subheading: [2810.00](https://border.bot/countries/united-states/hs-codes/281000) Oxides of boron; boric acids

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2809.20?

The United States tariff splits HS 2809.20 (phosphoric acid and polyphosphoric acids) into 4 national lines: 2809.20.00.10 (containing less than 65 percent available diphosphorus pentaoxide (P2O5) equivalents), 2809.20.00.20 (other), 2809.20.00.30 (other) and 2809.20.00.40 (polyphosphoric acids).

### What is the duty on HS 2809.20 in the United States?

Every United States line under 2809.20 is free of general (MFN) duty.

## 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/280920.json