GST Calculator
Calculate GST instantly by adding tax to a base price or removing GST from a total amount. Pick a GST rate and get the GST amount, total amount, and base amount in seconds. This free tool works in your browser and does not store your data.
Calculate GST (Add)
Select GST Rate
Tip: Choose the rate as per your bill/invoice slab.
GST Amount:
₹0.00
Total Amount:
₹0.00
Calculate GST (Remove)
Select GST Rate
Use this when you have an “inclusive of GST” total.
GST Amount:
₹0.00
Base Amount:
₹0.00
How to Use the GST Calculator
- Enter the amount (before tax for “Add”, or total amount for “Remove”).
- Select the GST rate (5%, 12%, 18%, or 28%).
- See the GST amount and final value update instantly.
- Change the rate to compare totals across GST slabs.
- Use “Remove” to get the base price from an GST-inclusive bill.
FAQs
Is this GST calculator free to use?
Yes. It’s completely free and works instantly in your browser.
Is my data stored or uploaded?
No. Calculations happen locally on your device. No amounts are stored or sent to a server.
How does “Remove GST” work?
It divides the total by (1 + GST rate) to find the base amount, then subtracts it from the total to get GST.