GST calculator
Add or extract GST
Calculate the tax component for a selected rate. This tool uses arithmetic only and does not determine the legally applicable GST rate.
Estimated calculation
- Taxable value
- ₹1000.00
- GST amount
- ₹180.00
- Total
- ₹1180.00
Estimate only. Confirm classification, place of supply, exemptions, cess and applicable rate before invoicing or filing.
Formula and assumptions
Exclusive: GST = taxable value × rate ÷ 100. Inclusive: GST = total − total ÷ (1 + rate ÷ 100). The tool does not account for cess, exemptions, reverse charge, composition levy, rounding rules or place-of-supply treatment.