Product classification
HS code for Municipal waste ash: 2621.10
Slag and ash, ash and residues from the incineration of municipal waste.
Classification of municipal waste ash under HS 2621.10
Municipal waste ash is classified under HS code 2621.10 because it represents the solid residue remaining after the incineration of municipal waste. Chapter 26 of the Harmonized System is dedicated to ores, slag, and ash. Within this chapter, heading 2621 serves as a residual category for slag and ash that are not elsewhere specified. Subheading 2621.10 is specifically designated for ash and residues resulting from the incineration of municipal waste. This classification is determined by the origin of the ash—specifically, the combustion of household, commercial, and institutional waste collected by or on behalf of municipal authorities. The classification remains consistent regardless of whether the ash is intended for disposal in landfills or for recovery operations, such as use in construction materials or metal extraction. The chemical composition of this ash typically includes various oxides, silicates, and trace metals, but its classification is driven by its source as a byproduct of municipal waste incineration processes rather than its chemical purity.
- Covers
- Incinerator bottom ash (IBA) from municipal plants
- Fly ash resulting from municipal waste combustion
- Boiler slag from municipal waste incinerators
- Combined ash residues from municipal waste-to-energy facilities
- 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. Municipal waste ash is frequently confused with other types of ash classified under 2621.90. While 2621.10 is specific to municipal waste, 2621.90 covers coal ash, wood ash, and ash from other industrial processes. Another common error is attempting to classify these residues under heading 3825, which covers residual products of the chemical or allied industries. However, because 2621 specifically mentions ash from municipal waste incineration, General Interpretative Rule 1 dictates that the specific heading takes precedence over more general waste headings.
Top exporters and importers of HS 262110 (the code used for municipal waste ash), 2025
In 2025, the largest exporter of HS 262110 (the code used for municipal waste 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 municipal waste 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 municipal waste ash
Brazil classifies municipal waste 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 municipal waste ash
What is the HS code for Municipal waste ash?
The HS code for Municipal waste ash is 262110 (Slag and ash; ash and residues from the incineration of municipal waste). The HS code for municipal waste ash is 2621.10, which specifically covers ash and residues from the incineration of municipal waste.
How do I classify Municipal waste ash for customs?
Municipal waste 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 include ash from hazardous industrial waste?
No, ash from the incineration of hazardous waste is generally classified under 2621.90 or within Chapter 38, depending on its specific chemical nature and origin, as 2621.10 is strictly for municipal waste.
Which countries are the top exporters of municipal waste ash (HS 262110)?
In 2025, the top exporters of HS 262110 (the code used for municipal waste 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 municipal waste ash (HS 262110)?
In 2025, the top importers of HS 262110 (the code used for municipal waste 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 Municipal waste ash the same in all countries?
The base HS code 262110 for Municipal waste 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 municipal waste ash in Brazil?
In Brazil, municipal waste ash (HS 262110) is classified under NCM 2621.10.00.