GST Calculator
Add or remove GST using the common Indian slabs — 5%, 12%, 18%, and 28%.
Enter a base price to add GST and see the final amount, or enter a GST-inclusive price to work out the pre-tax base and the GST portion — handy for invoicing or checking a bill.
Frequently asked questions
Which GST slabs does the calculator support?
The common Indian GST rates — 5%, 12%, 18%, and 28% — are built in as quick-select options.
Can I remove GST from a GST-inclusive price?
Yes. Switch to "remove GST" mode, enter the final price, and the calculator backs out the base price and GST amount.
How is GST added to a price calculated?
GST amount = base price × (GST rate ÷ 100), and the final price is the base price plus that GST amount.