Other slag and ash, including seaweed ash (kelp); ash and residues from the incineration of municipal waste
2 declarable lines
Heading 2621 covers other slag and ash, including seaweed ash (kelp), and ash and residues from the incineration of municipal waste. It has two declarable lines: 2621.10.00.00 for municipal waste incineration ash and residues, and 2621.90.00.00 for other slag and ash, including seaweed ash. Both lines carry a general (MFN) rate of Free.
Products in this heading
- Municipal waste incinerator ash
- Municipal waste incinerator bottom ash
- Municipal waste incinerator fly ash
- Residues from municipal waste incineration
- Seaweed ash (kelp ash)
- Kelp ash used as a mineral or fertilizer ingredient
- Other slag and ash not covered by earlier headings
How to choose the right subheading
- Source is municipal waste incineration: use 2621.10.00.00.
- Source is seaweed or kelp ash, or other slag and ash not from municipal waste incineration: use 2621.90.00.00.
- Confirm the material is slag, ash, or incineration residue, not an ore or concentrate.
- Check for arsenic, metals, or metal compounds that would place the goods in heading 2620.
- Check whether the goods are from iron or steel manufacture, which is outside this heading.
Often confused with
- Heading 2601Iron ore fines and concentrates
Ores and concentrates are classified in heading 2601, not as slag or ash.
- Heading 2616Precious metal ore
Precious metal ores and concentrates are in heading 2616.
- Heading 2620Slag and ash containing arsenic, metals, or metal compounds from non-iron/steel manufacture
Heading 2620 covers those metal-bearing slag and ash residues.
- Heading 2612Uranium ore
Uranium ores and concentrates are in heading 2612.
Frequently asked questions
What is the HTS code for municipal waste incinerator ash?
Ash and residues from the incineration of municipal waste are classified under 2621.10.00.00. The general (MFN) rate for that line is Free.
What is the duty on seaweed ash (kelp ash)?
Seaweed ash (kelp ash) is classified under 2621.90.00.00. The general (MFN) rate for that line is Free.
How do I classify other slag and ash that is not from municipal waste incineration?
Use 2621.90.00.00 for other slag and ash, including seaweed ash, when no more specific heading applies. The general (MFN) rate for that line is Free.
Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.