HS code 2621.90: Other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste
Last updated
Key facts
- HS code
- 2621.90
- Covers
- Other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste
- Chapter
- 26: Ores, slag and ash
- Edition
- HS2022
- Duty in the United States
- See its 1 line
Summary
HS code 2621.90 covers other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste, other than those classified in 2621.10. It sits in heading 26.21 (other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste) in chapter 26 (ores, slag and ash). Other goods of heading 26.21 are classified under 2621.10 (ash or residues from the incineration of municipal waste). National tariff lines under 2621.90 are live on border.bot for the United States (1 line, also used by 1 other country).
What this code covers
HS code 2621.90 covers other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste, other than those classified in 2621.10.
The legal text of the subheading is “Other”, in HS2022.
What it doesn’t cover
Other goods of heading 26.21 are classified under 2621.10 (ash or residues from the incineration of municipal waste).
- 2621.10Ash and residues from the incineration of municipal waste
How it is structured
2621.90 is a six-digit subheading. Its first two digits, 26, are the chapter; the first four, 2621, are heading 26.21; the last two, 90, identify the subheading within the heading.
Countries add their own digits after these six for their national tariff lines.
- Chapter 26
- Ores, slag and ash
- Heading 26.21
- Other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste
- Subheading 2621.90
- Other
In other countries
National tariff lines under 2621.90 are live on border.bot for the United States (1 line, also used by 1 other country).
- United States1 line, used by 1 other country
Frequently asked questions
What does HS code 2621.90 cover?
HS code 2621.90 covers other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste, other than those classified in 2621.10.
Which heading and chapter is HS code 2621.90 in?
HS code 2621.90 is in heading 26.21 (other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste) in chapter 26 (ores, slag and ash).
Where are goods of heading 26.21 classified when 2621.90 doesn’t fit?
Other goods of heading 26.21 are classified under 2621.10 (ash or residues from the incineration of municipal waste).
Which countries’ tariffs list national lines under HS code 2621.90?
National tariff lines under 2621.90 are live on border.bot for the United States (1 line, also used by 1 other country).
Sources and updates
The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.
This page was last updated on 11 October 2026.
Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.