GST Calculator (India)
Add or remove GST at 5%, 18% or 40% (or any rate) and see CGST/SGST or IGST split for any amount.
- Free
- No sign-up
- Runs in your browser
- Business
About the GST Calculator (India)
Enter an amount, choose whether it includes GST, and get the tax and total instantly.
How it works
Exclusive: GST = amount × rate ÷ 100. Inclusive: GST = amount − amount × 100 ÷ (100 + rate). Intra-state supply splits GST equally into CGST and SGST; inter-state is IGST. Most goods and services moved to the 5% and 18% slabs (and 40% for certain luxury/sin goods) from 22 September 2025; 12% and 28% are included for older invoices and the few items still taxed at those rates.
Frequently asked questions
Which GST rate applies to web design and digital marketing?
Most IT and marketing services are taxed at 18%. Check with your accountant for your case.