# United States tariff line 0303.42.00.40: Head-on

> In the United States tariff, line 0303.42.00.40 covers tunas (of the genus Thunnus), skipjack tuna (stripe-bellied bonito) (Katsuwonus pelamis), excluding edible fish offal of subheadings 0303.91 to 0303.99, yellowfin tunas (Thunnus albacares), head-on. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 0303.42 in heading 03.03 (chapter 03).

Source: https://border.bot/countries/united-states/hs-codes/0303420040
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 03](https://border.bot/countries/united-states/hs-codes/03) / [0303.42](https://border.bot/countries/united-states/hs-codes/030342) / [0303.42.00.40](https://border.bot/countries/united-states/hs-codes/0303420040)

## Key facts

- Tariff line: 0303.42.00.40
- Covers: Tunas (of the genus Thunnus), skipjack tuna (stripe-bellied bonito) (Katsuwonus pelamis), excluding edible fish offal of subheadings 0303.91 to 0303.99, yellowfin tunas (Thunnus albacares), head-on
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [0303.42](https://border.bot/hs-codes/030342)

## What this line covers

In the United States tariff, line 0303.42.00.40 covers tunas (of the genus Thunnus), skipjack tuna (stripe-bellied bonito) (Katsuwonus pelamis), excluding edible fish offal of subheadings 0303.91 to 0303.99, yellowfin tunas (Thunnus albacares), head-on.

Its legal text is “Head-on”, read under “Tunas (of the genus Thunnus), skipjack tuna (stripe-bellied bonito) (Katsuwonus pelamis), excluding edible fish offal of subheadings 0303.91 to 0303.99”, “Yellowfin tunas (Thunnus albacares)” and “Other”.

## How it is structured

It falls under HS subheading 0303.42 in heading 03.03 (chapter 03). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 03: Fish and crustaceans, molluscs and other aquatic invertebrates
- Heading 03.03: Fish, frozen, excluding fish fillets and other fish meat of heading 0304
- Subheading 0303.42: Tunas (of the genus Thunnus), skipjack tuna (stripe-bellied bonito) (Katsuwonus pelamis), excluding edible fish offal of subheadings 0303.91 to 0303.99
- Within the subheading: Yellowfin tunas (Thunnus albacares)
- Within the subheading: Other
- Line 0303.42.00.40: Head-on

## Duty

Goods under this line enter free of general (MFN) duty.

The rate is published on 0303.42.00.

## In other countries

No other national tariff on border.bot has live lines under 0303.42 yet.

- [The Harmonized System text for 0303.42](https://border.bot/hs-codes/030342)

## Other lines under 0303.42

- [0303.42.00.20](https://border.bot/countries/united-states/hs-codes/0303420020) Whole fish
- [0303.42.00.60](https://border.bot/countries/united-states/hs-codes/0303420060) Other

- Previous line: [0303.42.00.20](https://border.bot/countries/united-states/hs-codes/0303420020) Whole fish
- Next line: [0303.42.00.60](https://border.bot/countries/united-states/hs-codes/0303420060) Other

## Frequently asked questions

### What does tariff line 0303.42.00.40 cover in the United States tariff?

In the United States tariff, line 0303.42.00.40 covers tunas (of the genus Thunnus), skipjack tuna (stripe-bellied bonito) (Katsuwonus pelamis), excluding edible fish offal of subheadings 0303.91 to 0303.99, yellowfin tunas (Thunnus albacares), head-on.

### What is the general (MFN) duty on 0303.42.00.40 in the United States?

Goods under this line enter free of general (MFN) duty. The rate is published on 0303.42.00.

## 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/0303420040.json