CHAPTER 99 · TRADE MEASURE CODE

9903.91.05

Active

9903.91.05 implements Section 301 on goods of China origin, adding +50% 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

+50%

Status

Active

Applies to

China

Base codes paired

76

What 9903.91.05 implements

Effective with respect to entries on or after January 1, 2025, articles the product of China, as provided for in subdivision (f) of U.S. note 31 to this subchapter

HTS legal text: Effective with respect to entries on or after January 1, 2025, articles the product of China, as provided for in subdivision (f) of U.S. note 31 to this subchapter

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

Base HTS codes 9903.91.05 pairs with

Showing 30 of 76 linked base codes. Open a base code, then add /from/<country> to see the computed duty.

2804.61.00.00 Containing by weight not less than 99.99 percent of silicon 3818.00.00 Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics 3818.00.00.10 Gallium arsenide wafers, doped 3818.00.00.20 Polycrystalline silicon wafers, doped 3818.00.00.30 Silicon carbide wafers, doped 3818.00.00.40 Round (circular) shaped, as described in statistical note 2 to this chapter 3818.00.00.45 Pseudo-square or rectangular in shape, as described in statistical note 3 to this chapter 3818.00.00.50 Other 3818.00.00.91 Other 8541.10.00 Diodes, other than photosensitive or light-emitting diodes (LED) 8541.10.00.40 Unmounted chips, dice and wafers 8541.10.00.50 Zener 8541.10.00.60 Microwave 8541.10.00.70 With a maximum current of 0.5 A or less 8541.10.00.80 Other 8541.21.00 With a dissipation rate of less than 1 W 8541.21.00.40 Unmounted chips, dice and wafers 8541.21.00.75 With an operating frequency not less than 100 MHz 8541.21.00.95 Other 8541.29.00 Other 8541.29.00.40 Unmounted chips, dice and wafers 8541.29.00.55 With an operating frequency less than 30 MHz 8541.29.00.65 With an operating frequency 30 MHz or greater but less than 30,000 MHz 8541.29.00.85 With an operating frequency 30,000 MHz or greater 8541.30.00 Thyristors, diacs and triacs, other than photosensitive devices 8541.30.00.40 Unmounted chips, dice and wafers 8541.30.00.80 Other 8541.49.10 Other diodes 8541.49.10.10 Unmounted chips, dice and wafers 8541.49.10.50 Other

Related CBP rulings

Frequently asked questions

What is 9903.91.05?

9903.91.05 is a U.S. Harmonized Tariff Schedule Chapter 99 subheading that implements Section 301 on goods of China origin. It adds +50% on top of the duty in the underlying base HTS subheading. It is effective September 27, 2024.

Does 9903.91.05 apply to 2804.61.00.00?

2804.61.00.00 (Containing by weight not less than 99.99 percent of silicon) is among the base HTS codes linked to 9903.91.05. 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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Is 9903.91.05 owed on your import?

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