About Chapter 26
Chapter 26 of the Harmonized System of Nomenclature (HSN) is titled “Ores, slag and ash”. It is part of Section V, Mineral Products, together with Chapter 25 (salt, sulphur, earths and stone, plastering materials) and Chapter 27 (mineral fuels).
The chapter is divided into 21 headings, from 2601 (iron ores and concentrates, including roasted iron pyrites) to 2621 (other slag and ash, inlcuding seaweed ash). The headings with the most codes that people search for are slag, ash and residues, containing arsenic, metals or their compounds (2620) and other slag and ash, inlcuding seaweed ash (2621).
Note 1 sends slag prepared as macadam to heading 2517, natural magnesium carbonate (magnesite) to heading 2519, basic slag to Chapter 31 and slag wool to heading 6806.
Every heading is listed below. Under each are the codes that have their own page on Laabam One, 3 codes in this chapter, each with its full classification: its chapter, heading and sub-heading, and the codes beside it.
Every code in this chapter begins with 26: four digits make a heading, six a sub-heading, and eight a tariff item of India's Customs Tariff. How many of those digits a GST tax invoice shows depends on the business, not the goods: under Notification No. 78/2020 – Central Tax, from 1 April 2021, four digits where aggregate turnover in the previous financial year was up to ₹5 crore, and six above it. Up to ₹5 crore, the code may be left off invoices to unregistered buyers.
No GST rate is shown here. GST rates were revised in September 2025, and a rate appears on this site only once it has been checked against the CBIC rate notifications.
Sources: ITC(HS) Chapter 26, DGCI&S (title, headings and notes); Notification No. 78/2020 – Central Tax (HSN digits on invoices).