Rate at a Glance
Chapter 28
GST rate guide
Most inorganic chemicals are taxed at 18%. A few items used as fertiliser inputs, such as sulphuric acid and ammonia, are taxed at 5%.
Use this rate in hisabkitab: start free
Rates reflect GST changes effective 22 September 2025. Confirm the rate for your exact product description before filing.
All 16 HSN codes under 2811
| HSN code | Description |
|---|---|
| 28111100 | Other inorganic acids: hydrogen fluoride (hydrofluoric acid) |
| 28111910 | Other inorganic acids: - other: hydrocyanic acid (hydrogen cyanide, prussic acid) |
| 28111920 | Other inorganic acids: - other: hypophosphorus acid (phosphinic acid) |
| 28111930 | Other inorganic acids: - other: acids of arsenic |
| 28111940 | Other inorganic acids: - other: sulphonic acid |
| 28111990 | Other inorganic acids: - other: other |
| 28112110 | Other inorganic oxygen compounds of non-metals: - carbon dioxide: dry ice |
| 28112190 | Other inorganic oxygen compounds of non-metals: - carbon dioxide: other |
| 28112200 | Other inorganic oxygen compounds of non-metals: silicon dioxide |
| 28112300 | Other inorganic oxygen compounds of non-metals: sulphur dioxide |
| 28112910 | Other inorganic oxygen compounds of non-metals: - other: arsenic pentaoxide |
| 28112920 | Other inorganic oxygen compounds of non-metals: - other: arsenic trioxide |
| 28112930 | Other inorganic oxygen compounds of non-metals: - other: nitrous oxide |
| 28112940 | Other inorganic oxygen compounds of non-metals: - other: carbon monoxide |
| 28112950 | Other inorganic oxygen compounds of non-metals: - other: sulphur trioxide (sulphuric anhydride) |
| 28112990 | Other inorganic oxygen compounds of non-metals: - other: other |
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