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GST Calculator — Add or Remove GST (CGST, SGST, IGST)
Enter an amount and the GST rate. Choose whether the amount is before GST (add GST) or already includes GST (remove GST). For a sale within your state the tax is split equally into CGST and SGST; for a sale to another state it is IGST.
Fill in the details — your result appears here instantly.
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GST Calculator — common questions
What are the GST rates now?
Since 22 September 2025 most goods and services fall in two main slabs, 5% and 18%, with a special 40% rate for a small list of luxury and sin goods. Some items are exempt (0%), and a few have special rates such as 3% on gold and 0.25% on rough diamonds.
When is CGST + SGST charged and when IGST?
CGST and SGST (half each) apply when the supplier and the place of supply are in the same state. IGST applies when they are in different states, and on imports and exports.
How do I remove GST from an inclusive price?
Divide the price by (1 + rate/100). For example, ₹1,180 including 18% GST is ₹1,000 before tax and ₹180 GST. The calculator does this for you.
This tool gives an estimate based on the rules shown. Your actual figure depends on your full details — our expert confirms it before any filing.
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