Harmonized Tariff Schedule of the United States · HTS code · HS 8401.40

8401.40.00

8401.40.00: Parts of nuclear reactors

Not declarable on its own: use one of its 1 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026

  1. 8401 Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation; parts thereof:
  2. 8401.40.00 Parts of nuclear reactors

What you pay

Importing into USA

Customs duty 3.3% standard rate depends on the country of origin
Additional duties and charges 3 additional measures
VAT no federal VAT; a Merchandise Processing Fee of 0.3464 % is charged on formal entries
Duty calculatorCalculate duty and taxes →

US additional duties of HTS chapter 99 in force on 22 October 2026 are included (Section 301, 232, 338 and 201). IEEPA duties are no longer collected after the Supreme Court ruling of February 2026. Conditional exemptions (US content, end use, metal share) are not computed: check the provision.

Additional duties and import rules

Charges on top of the customs duty, and rules the goods must meet at the border.

Additional duties and charges 3

  • Additional dutySection 232 — Steel, aluminium, copper and derivatives 11.7%
    Applies to goods from
    all countries except Cuba, North Korea, Russia, Belarus
    In force
    from 6 April 2026
    Legal act
    HTSUS 9903.82.10
  • Additional dutySection 232 — Steel, aluminium, copper and derivatives 25%
    Applies to goods from
    Belarus, Cuba, North Korea, Russia
    In force
    from 6 April 2026
    Legal act
    HTSUS 9903.82.12
  • Additional dutySection 232 — Steel, aluminium, copper and derivatives 25%
    Applies to goods from
    Russia
    In force
    from 6 April 2026
    Legal act
    HTSUS 9903.82.17

Preferential rates by country

Agreement or schemeCountriesRate
General (MFN)—3.3%
US–Australia FTA AUAustraliaFree
US–Bahrain FTA BHBahrainFree
US–Chile FTA CLChileFree
US–Colombia TPA COColombiaFree
US–Israel FTA ILIsraelFree
US–Jordan FTA JOJordanFree
US–Korea FTA KRSouth KoreaFree
US–Morocco FTA MAMoroccoFree
US–Oman FTA OMOmanFree
CAFTA-DR PCosta Rica, Dominican Republic, El Salvador, Guatemala, Honduras, NicaraguaFree
US–Panama TPA PAPanamaFree
US–Peru TPA PEPeruFree
USMCA SCanada, MexicoFree
US–Singapore FTA SGSingaporeFree
Column 2Cuba, North Korea, Russia, Belarus45%

Special: reduced rates under trade agreements and preference programmes; the letters in brackets name the programmes (for example AU = Australia FTA, KR = Korea FTA).

Same subheading in other tariffs

8401.40 Parts of nuclear reactors (Euratom)

Binding rulings for similar goods

Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.

  • 600011694 HMRC 25 October 2024 – 24 October 2027 · 8401 40 00 90

    Nuclear Fuel Element parts. The RFA-2 fuel assembly can provide lower cycle costs. Its advanced features provide increased fretting margin, heat transfer improvements and enhanced debris mitigation meaning customers can feel confident about fuel performance and economics. It provides the following…

Legal notes

Notes

Chapter notes: Chapter 84 →

In the Harmonized Tariff Schedule of the United States, 8401.40.00 is one of 1 line under subheading 8401.40, parts of nuclear reactors (Euratom).

The general duty is 3.3%, and quantities are declared in t.

For the same subheading, the UK duty is free, the EU duty is 3.7%, the Türkiye duty is 3.7%, the Canada duty is free, the Mexico duty is free, the Brazil duty is free, the Argentina duty is 12.6%, the Peru duty is free, the New Zealand duty is free, the Japan duty is free, the Taiwan duty is free, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is 7% and the Nigeria duty is 5%.

The United States imported goods of subheading 8401.40 worth US$27m in 2024; the largest supplier was Japan.

Questions and answers

What is the USA import duty for HTS code 8401.40.00?

The general duty in the Harmonized Tariff Schedule of the United States is 3.3%; the supplementary unit is t. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.

Is there a lower rate for 8401.40.00 under US trade agreements?

Yes. The Special column reads “Free (A, AU, BH, CL, CO,D,E, IL, JO, KR, MA, OM,P, PA, PE,S, SG)”: the letters in brackets name the agreements and programmes that grant it.

Where does the United States import these goods from?

For subheading 8401.40 as a whole, the largest supplier in 2024 was Japan (US$16m), followed by Sweden.

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Typical products

Everyday names, not part of the legal text.