CHAPTER 99 · TRADE MEASURE CODE

9903.88.01

Active

9903.88.01 implements Section 301 List 1 on goods of China origin, adding +25% on top of the base HTS duty. It is effective July 6, 2018.

Data provenance: Rates from HTS Revision 19 (Sep 16, 2026); trade measures verified against CBP CSMS and Federal Register notices through Sep 3, 2026.

Additional rate

+25%

Status

Active

Applies to

China

Base codes paired

2,094

What 9903.88.01 implements

Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]

HTS legal text: Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]

List: List 1 Effective window: effective July 6, 2018

Glossary: Section 301 List 1 → All Section 301 List 1 codes →

Base HTS codes 9903.88.01 pairs with

Showing 30 of 2,094 linked base codes. Open a base code, then add /from/<country> to see the computed duty.

2845.20.00.00 Boron enriched in boron-10 and its compounds 2845.30.00.00 Lithium enriched in lithium-6 and its compounds 2845.40.00.00 Helium-3 2845.90.01.00 Other 4011.30.00 Of a kind used on aircraft 4011.30.00.10 For use in civil aircraft 4011.30.00.50 Other 4012.13.00 Of a kind used on aircraft 4012.13.00.10 For use in civil aircraft 4012.13.00.50 Other 8401.10.00.00 Nuclear reactors 8401.20.00.00 Machinery and apparatus for isotopic separation, and parts thereof 8401.30.00.00 Fuel elements (cartridges), non-irradiated, and parts thereof 8401.40.00.00 Parts of nuclear reactors 8402.11.00.00 Watertube boilers with a steam production exceeding 45 t per hour 8402.12.00.00 Watertube boilers with a steam production not exceeding 45 t per hour 8402.19.00.00 Other vapor generating boilers, including hybrid boilers 8402.20.00.00 Super-heated water boilers 8402.90.00 Parts 8402.90.00.10 Heat exchangers 8402.90.00.90 Other 8404.20.00.00 Condensers for steam or other vapor power units 8404.90.00.00 Parts 8405.10.00.00 Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers 8405.90.00.00 Parts 8406.10.10.00 Steam turbines 8406.10.90.00 Other 8406.81.90.00 Other 8406.82.90.00 Other 8407.10.00 Aircraft engines

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Frequently asked questions

What is 9903.88.01?

9903.88.01 is a U.S. Harmonized Tariff Schedule Chapter 99 subheading that implements Section 301 List 1 on goods of China origin. It adds +25% on top of the duty in the underlying base HTS subheading. It is effective July 6, 2018.

Does 9903.88.01 apply to 2845.20.00.00?

2845.20.00.00 (Boron enriched in boron-10 and its compounds) is among the base HTS codes linked to 9903.88.01. Whether the measure is owed on a specific entry also depends on the country of origin (Section 301 List 1 applies to China) and any applicable exclusion. See the duty-by-origin page for the computed rate.

Where does this come from, and how current is it?

Rates from HTS Revision 19 (Sep 16, 2026); trade measures verified against CBP CSMS and Federal Register notices through Sep 3, 2026.

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