GST Calculator
Calculate GST on inclusive or exclusive prices and split it into CGST and SGST or IGST for India billing.
GST inputs
GST result
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About GST calculations
What it does
Calculates taxable value, GST amount, and invoice total from inclusive or exclusive pricing and shows either CGST plus SGST or IGST.
Why it matters
Teams often need quick GST math while quoting, checking invoices, or validating marketplace and accounting exports.
Definition
GST is a destination-based indirect tax in India. Intra-state invoices generally split tax into CGST and SGST, while inter-state invoices generally use IGST.
Assumptions
- One flat GST rate is applied to one taxable value
- The tool estimates common invoice math only and does not classify goods or exemptions
- It does not replace accountant review for final filings
How to interpret your results
Use exclusive mode when you are starting from pre-tax value. Use inclusive mode when the price already contains GST.
How to improve
Match product rate
Confirm the correct GST slab for the product or service before using the total on a live invoice.
Validate state treatment
Check whether billing is intra-state or inter-state so the tax split matches your invoice format.