# HS code 0101.21: Horses, pure-bred breeding animals

> HS code 0101.21 covers horses, pure-bred breeding animals. It sits in heading 01.01 (live horses, asses, mules and hinnies) in chapter 01 (live animals). Other goods of heading 01.01 are classified under 0101.29 (horses, other), 0101.30 (asses) or 0101.90 (other). National tariff lines under 0101.21 are live on border.bot for the United States (2 lines, also used by 1 other country).

Source: https://border.bot/hs-codes/010121
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 01](https://border.bot/hs-codes/01) / [01.01](https://border.bot/hs-codes/0101) / [0101.21](https://border.bot/hs-codes/010121)

## Key facts

- HS code: 0101.21
- Covers: Horses, pure-bred breeding animals
- Heading: [01.01: Live horses, asses, mules and hinnies](https://border.bot/hs-codes/0101)
- Chapter: [01: Live animals](https://border.bot/hs-codes/01)
- Edition: HS2022
- Duty in the United States: [See its 2 lines](https://border.bot/countries/united-states/hs-codes/010121)

## What this code covers

HS code 0101.21 covers horses, pure-bred breeding animals.

The legal text of the subheading is “Horses: Pure-bred breeding animals”, read under “Horses”, in HS2022.

## What it doesn’t cover

Other goods of heading 01.01 are classified under 0101.29 (horses, other), 0101.30 (asses) or 0101.90 (other).

- [0101.29](https://border.bot/hs-codes/010129) Horses: Other
- [0101.30](https://border.bot/hs-codes/010130) Asses
- [0101.90](https://border.bot/hs-codes/010190) Other

## How it is structured

0101.21 is a six-digit subheading. Its first two digits, 01, are the chapter; the first four, 0101, are heading 01.01; the last two, 21, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 01: Live animals
- Heading 01.01: Live horses, asses, mules and hinnies
- Within the heading: Horses
- Subheading 0101.21: Pure-bred breeding animals

## In other countries

National tariff lines under 0101.21 are live on border.bot for the United States (2 lines, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/010121): 2 lines, used by 1 other country

- Next subheading: [0101.29](https://border.bot/hs-codes/010129) Horses: Other

## Frequently asked questions

### What does HS code 0101.21 cover?

HS code 0101.21 covers horses, pure-bred breeding animals.

### Which heading and chapter is HS code 0101.21 in?

HS code 0101.21 is in heading 01.01 (live horses, asses, mules and hinnies) in chapter 01 (live animals).

### Where are goods of heading 01.01 classified when 0101.21 doesn’t fit?

Other goods of heading 01.01 are classified under 0101.29 (horses, other), 0101.30 (asses) or 0101.90 (other).

### Which countries’ tariffs list national lines under HS code 0101.21?

National tariff lines under 0101.21 are live on border.bot for the United States (2 lines, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 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.

Machine-readable: https://border.bot/hs-codes/010121.json