Analysis
HTS 2621.10.00 covers ash and residues from the incineration of municipal waste under heading 2621 (other slag and ash, including seaweed ash (kelp); ash and residues from the incineration…).
Goods classified here enter the United States duty-free at the general (normal trade relations) rate, as do about 97% of the 39 tariff lines in chapter 26. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
The other line in the same group is 2621.90.00 (other slag and ash, including seaweed ash (kelp); ash and…, duty-free).
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 2621.90.00 | Other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste: other | Free |