GST
GST Calculator
Add GST to a taxable value and split it into CGST and SGST, or IGST for inter-state supplies.
Applies to: Rates in force from 22 September 2025
Result
Formula
- GST = Taxable value × Rate
- Intra-state: CGST = SGST = GST ÷ 2
- Invoice value = Taxable value + GST
Assumptions
- The rate applicable to the goods or services is selected by the user; it depends on the HSN or SAC classification.
- Compensation cess, where applicable, is not included.
Official sources
Illustrative only. This calculator shows results from the inputs and assumptions above. It is not personalised professional advice and does not consider your specific facts. Rates were last checked on 9 November 2026.