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 17 HSN codes under 2835
| HSN code | Description |
|---|---|
| 28351010 | Phosphinates (hypophosphites) and phosphonates (phosphites): calcium hypophosphite |
| 28351020 | Phosphinates (hypophosphites) and phosphonates (phosphites): magnesium hypophosphite |
| 28351090 | Phosphinates (hypophosphites) and phosphonates (phosphites): other |
| 28352200 | Phosphates: of mono-or disodium |
| 28352300 | Phosphates: of trisodium |
| 28352400 | Phosphates: of potassium |
| 28352500 | Phosphates: calcium hydrogenorthophosphate ("dicalcium phosphate") |
| 28352610 | Phosphates: - other phosphates of calcium: calcium monobasic phosphate |
| 28352620 | Phosphates: - other phosphates of calcium: calcium tribasic phosphate |
| 28352690 | Phosphates: - other phosphates of calcium: other |
| 28352910 | Phosphates: - other: magnesium phosphate, monobasic |
| 28352920 | Phosphates: - other: magnesium phosphate, dibasic |
| 28352930 | Phosphates: - other: magnesium phosphate, tribasic |
| 28352940 | Phosphates: - other: sodium hexametaphosphate |
| 28352990 | Phosphates: - other: other |
| 28353100 | Polyphosphates: sodium triphosphate (sodium tripoly- phosphate) |
| 28353900 | Polyphosphates: other |
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