What does 8540.99 cover?

Other:. This is a heading-level category with several subordinate codes — open one to see its full duty breakdown.

Where does this data come from?

Codes and MFN base rates come from the full USITC HTS 2026 Rev.11 export. Section 301/232/122 surcharge mappings are approximated pending code-level review. Every rate carries a source_url and effective_from, so you can trace it back to the controlling notice.

8540.99 — Other: | US duty

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8540.99 · Other:

This is a category heading rather than a rate line — pick one of the codes below to see its full duty stack.

Subordinate codes (2)

Code	Description
8540.99.40.00	Electron guns; radio frequency (RF) interaction structures for microwave tubes of subheadings 8540.71 through 8540.79, inclusive
8540.99.80.00	Other

Frequently asked

What does 8540.99 cover?: Other:. This is a heading-level category with several subordinate codes — open one to see its full duty breakdown.
Where does this data come from?: Codes and MFN base rates come from the full USITC HTS 2026 Rev.11 export. Section 301/232/122 surcharge mappings are approximated pending code-level review. Every rate carries a source_url and effective_from, so you can trace it back to the controlling notice.