Product classification
HS code for Incinerator ash: 2621.10
Slag and ash, ash and residues from the incineration of municipal waste.
Classification of incinerator ash under HS 2621.10
Incinerator ash is classified under HS code 2621.10, which is a specific provision within Chapter 26 for other slag and ash. This chapter generally covers ores, slag, and ash derived from various industrial processes. Subheading 2621.10 is uniquely designated for ash and residues resulting from the incineration of municipal waste. This classification is straightforward under GRI 1 because the subheading text precisely matches the product description. The material typically consists of bottom ash, which is the heavy residue left in the combustion chamber, and fly ash, which refers to the fine particles captured by air pollution control systems. Because these residues are the byproduct of waste-to-energy or waste-disposal processes rather than metal smelting (which would fall under 2618 or 2619), they are relegated to heading 2621. The classification remains consistent regardless of whether the ash is intended for disposal in a landfill or for use as a secondary raw material in construction applications like road base or concrete manufacturing.
- Covers
- Municipal waste incinerator bottom ash (IBA)
- Fly ash from waste-to-energy plants
- Boiler slag from municipal waste combustion
- Combined ash residues from municipal incinerators
- Also under 2621.10
- Veolia incinerator ash
- Suez waste-to-energy residues
- municipal waste management by-products
- Ragn-Sells bottom ash
Codes often confused with 2621.10
Common mistake. Incinerator ash is sometimes confused with HS code 2618.00 (granulated slag from iron or steel manufacture) or 2619.00 (slag, dross, and other waste from iron or steel). However, those codes are strictly for metallurgical byproducts. It may also be confused with 3825.20 (sewage sludge), but 2621.10 is more specific for the inorganic residue remaining after the incineration process is complete.
Top exporters and importers of HS 262110 (the code used for incinerator ash), 2025
In 2025, the largest exporter of HS 262110 (the code used for incinerator ash) in UN Comtrade data was the Netherlands, with 32% of world exports; the largest importer in UN Comtrade data was the Netherlands, with 52% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 262110, not only incinerator ash.
Top exporters 2025 · share of world exports
- 1 Netherlands $23M 32% of world exports
- 2 United Kingdom $23M 31% of world exports
- 3 Finland $5.5M 7.6% of world exports
World total: $73M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Netherlands $45M 52% of world imports
- 2 Belgium $20M 23% of world imports
- 3 France $5.7M 6.7% of world imports
World total: $85M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for incinerator ash
Brazil classifies incinerator ash under NCM 2621.10.00: HS 2621.10 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about incinerator ash
What is the HS code for Incinerator ash?
The HS code for Incinerator ash is 262110 (Slag and ash; ash and residues from the incineration of municipal waste). The specific HS code for ash and residues from the incineration of municipal waste is 2621.10.
How do I classify Incinerator ash for customs?
Incinerator ash is classified under HS code 262110 — Slag and ash; ash and residues from the incineration of municipal waste. This is a 6-digit subheading level code.
Does this code cover ash from hazardous chemical waste?
If the ash is not from municipal waste, it may fall under the residual category 2621.90. However, 2621.10 is the primary code for standard municipal waste residues.
Which countries are the top exporters of incinerator ash (HS 262110)?
In 2025, the top exporters of HS 262110 (the code used for incinerator ash) in UN Comtrade data were the Netherlands ($23M, 32% of world exports), the United Kingdom ($23M) and Finland ($5.5M). World exports came to about $73M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of incinerator ash (HS 262110)?
In 2025, the top importers of HS 262110 (the code used for incinerator ash) in UN Comtrade data were the Netherlands ($45M, 52% of world imports), Belgium ($20M) and France ($5.7M). World imports came to about $85M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Incinerator ash the same in all countries?
The base HS code 262110 for Incinerator ash is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for incinerator ash in Brazil?
In Brazil, incinerator ash (HS 262110) is classified under NCM 2621.10.00.