Question 1

What is HTS code 9030.90.89.21?

Accepted Answer

HTS 9030.90.89.21 is the U.S. Harmonized Tariff Schedule classification for Oscilloscopes, spectrum analyzers and other instruments and apparatus for measuring or checking electrical quantities, excluding meters of heading 9028; instruments and apparatus for measuring or detecting alpha, beta, gamma, X-ray, cosmic or other ionizing radiations; parts and accessories thereof:​, parts and accessories, of articles of subheading 9030.31. It belongs to Chapter 90 of the HTSUS.

Question 2

What is the general duty rate for HTS 9030.90.89.21?

Accepted Answer

The general (Column 1) duty rate for HTS 9030.90.89.21 is Free. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.

Question 3

What is the Column 2 (statutory) rate for HTS 9030.90.89.21?

Accepted Answer

The Column 2 rate for HTS 9030.90.89.21 is 40%. This rate applies to imports from countries that do not have normal trade relations with the United States (currently Cuba and North Korea).

Question 4

Are there Section 301 or Section 232 tariffs on HTS 9030.90.89.21?

Accepted Answer

Yes — HTS 9030.90.89.21 is covered by section_301 provision 9903.88.01 (The duty provided in the applicable subheading plus 25%). 1 additional overlay also touch this code. Open the code page for the full overlay stack with effective dates and country scopes.

Question 5

Does HTS 9030.90.89.21 have any antidumping or countervailing duty (AD/CVD) orders?

Accepted Answer

No active AD/CVD orders currently flag HTS 9030.90.89.21 in Tandom's catalog. Tandom monitors Federal Register notices daily; a flag will appear here within 24h of any new order's publication.

Code	Authority	Rate	Countries
9903.88.01	section_301	The duty provided in the applicable subheading plus 25%	CN
9903.88.15	section_301	The duty provided in the applicable subheading + 7.5%	CN

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Plain-English explanation

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Frequently asked questions

What is HTS code 9030.90.89.21?

What is the general duty rate for HTS 9030.90.89.21?

What is the Column 2 (statutory) rate for HTS 9030.90.89.21?

Are there Section 301 or Section 232 tariffs on HTS 9030.90.89.21?

Does HTS 9030.90.89.21 have any antidumping or countervailing duty (AD/CVD) orders?

Learn more

Section 301 China tariff exclusions in 2026

How Chapter 99 tariff layers stack on a single entry

How to calculate US import duties

Wire the Tandom Duty Calculator API into a TMS or broker software

Section 232 steel, aluminum, and copper duties in 2026

Trade compliance APIs in broker workflows

Want the landed cost for this product?

Plain-English explanation

Tariff modifications(2)

Frequently asked questions

What is HTS code 9030.90.89.21?

What is the general duty rate for HTS 9030.90.89.21?

What is the Column 2 (statutory) rate for HTS 9030.90.89.21?

Are there Section 301 or Section 232 tariffs on HTS 9030.90.89.21?

Does HTS 9030.90.89.21 have any antidumping or countervailing duty (AD/CVD) orders?

Related codes(8)

Learn more

Section 301 China tariff exclusions in 2026

How Chapter 99 tariff layers stack on a single entry

How to calculate US import duties

Wire the Tandom Duty Calculator API into a TMS or broker software

Section 232 steel, aluminum, and copper duties in 2026

Trade compliance APIs in broker workflows