GST Calculator India: Add or Remove GST
Add GST to a price, or work backwards from a GST-inclusive amount, and see the CGST, SGST or IGST split.
Result
How this works
To add GST: GST = amount × rate ÷ 100, and the total is amount + GST.
To remove GST from an inclusive price: amount before GST = total × 100 ÷ (100 + rate).
For a sale within a state, GST is split equally into CGST and SGST. For a sale between states, the full amount is IGST.
Choosing the right rate
The rate depends on how your product or service is classified. GST rates were restructured in September 2025, with most items now at 5% or 18% and 40% for specified goods, but exceptions exist. Confirm the rate for your item on the GST portal or with your tax professional, or use the custom rate option.
Frequently asked questions
What is the difference between CGST, SGST and IGST?
CGST goes to the Centre and SGST to the state for sales within the same state. IGST is charged on sales between states and shared between the Centre and the destination state.
Does this include cess or TCS?
No. It covers only the GST rate you choose.
Do I need to register for GST?
It depends on your turnover, type of supply and state. See our guide on GST registration.
Read more: GST registration: documents and process · Other calculators: Income Tax Calculator · HRA Calculator · EMI Calculator
This calculator gives an estimate for general information only. It is not tax, legal or financial advice, and results depend on your exact circumstances and the rules in force. Please confirm with a qualified professional or the official source before acting. See our Terms & Disclaimer.
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