CHAPTER 99 · TRADE MEASURE CODE

9903.91.06

Active

9903.91.06 implements Section 301 on goods of China origin, adding +25% on top of the base HTS duty. It is effective September 27, 2024.

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

13

What 9903.91.06 implements

Effective with respect to entries on or after January 1, 2026, articles the product of China, as provided for in subdivision (g) of U.S. note 31 to this subchapter

HTS legal text: Effective with respect to entries on or after January 1, 2026, articles the product of China, as provided for in subdivision (g) of U.S. note 31 to this subchapter

Effective window: effective September 27, 2024
Glossary: Section 301 → All Section 301 codes →

Base HTS codes 9903.91.06 pairs with

13 linked base codes. Open a base code, then add /from/<country> to see the computed duty.

2504.10.10.00 Crystalline flake (not including flake dust) 2504.10.50.00 Other 2504.90.00.00 Other 8505.11.00 Of metal 8505.11.00.10 Alnico 8505.11.00.30 Ceramic 8505.11.00.50 Sintered samarium-cobalt 8505.11.00.70 Sintered neodymium-iron-boron 8505.11.00.90 Other 8507.60.00 Lithium-ion batteries 8507.60.00.10 Of a kind used as the primary source of electrical power for electrically powered vehicles of subheadings 8703.40, 8703.50, 8703.60, 8703.70 or 8703.80 8507.60.00.30 Battery energy storage systems fully encased within a housing, as described in statistical note 2 to this chapter 8507.60.00.90 Other

Frequently asked questions

What is 9903.91.06?

9903.91.06 is a U.S. Harmonized Tariff Schedule Chapter 99 subheading that implements Section 301 on goods of China origin. It adds +25% on top of the duty in the underlying base HTS subheading. It is effective September 27, 2024.

Does 9903.91.06 apply to 2504.10.10.00?

2504.10.10.00 (Crystalline flake (not including flake dust)) is among the base HTS codes linked to 9903.91.06. Whether the measure is owed on a specific entry also depends on the country of origin (Section 301 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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