# United States tariff lines under HS 3101.00

> The United States tariff splits HS 3101.00 (animal or vegetable fertilisers, whether or not mixed together or chemically treated; fertilisers produced by the mixing or chemical treatment of animal or vegetable products) into 1 national line: 3101.00.00.00 (animal or vegetable fertilizers, whether or not mixed together or chemically treated; fertilizers produced by the mixing or chemical treatment of animal or vegetable products). Every United States line under 3101.00 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/310100
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 31](https://border.bot/countries/united-states/hs-codes/31) / [3101.00](https://border.bot/countries/united-states/hs-codes/310100)

## Key facts

- HS subheading: [3101.00](https://border.bot/hs-codes/310100)
- Duty (MFN): Free
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 31: Fertilisers

## United States lines under 3101.00

The United States tariff splits HS 3101.00 (animal or vegetable fertilisers, whether or not mixed together or chemically treated; fertilisers produced by the mixing or chemical treatment of animal or vegetable products) into 1 national line: 3101.00.00.00 (animal or vegetable fertilizers, whether or not mixed together or chemically treated; fertilizers produced by the mixing or chemical treatment of animal or vegetable products).

Every United States line under 3101.00 is free of general (MFN) duty.

- [3101.00.00.00](https://border.bot/countries/united-states/hs-codes/3101000000) Animal or vegetable fertilizers, whether or not mixed together or chemically treated; fertilizers produced by the mixing or chemical treatment of animal or vegetable products. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 3101.00 yet.

- [The Harmonized System text for 3101.00](https://border.bot/hs-codes/310100)

- Previous subheading: [3006.93](https://border.bot/countries/united-states/hs-codes/300693) Placebos and blinded (or double-blinded) clinical trial kits for a recognized clinical trial, put up in measured doses
- Next subheading: [3102.10](https://border.bot/countries/united-states/hs-codes/310210) Mineral or chemical fertilizers, nitrogenous

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 3101.00?

The United States tariff splits HS 3101.00 (animal or vegetable fertilisers, whether or not mixed together or chemically treated; fertilisers produced by the mixing or chemical treatment of animal or vegetable products) into 1 national line: 3101.00.00.00 (animal or vegetable fertilizers, whether or not mixed together or chemically treated; fertilizers produced by the mixing or chemical treatment of animal or vegetable products).

### What is the duty on HS 3101.00 in the United States?

Every United States line under 3101.00 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/310100.json