GST Calculator in India
Online calculator to calculate GST in India. Allows you to get the price with GST or without GST quickly and accurately.
Incl. GST
Total incl. GST:
₹0.00
- Price excl. GST:
- ₹0.00
- GST18%
- ₹0.00
- Total incl. GST:
- ₹0.00
GST formulas and examples
Use these formulas to check the amount added to a tax-free price or removed from a tax-included total.
Add tax
Total = tax-free price x (1 + rate / 100)
Remove tax
Tax-free price = tax-included total / (1 + rate / 100)
Tax amount
Tax = tax-free price x rate / 100
Quick example
Starting from ₹100, a 18% rate gives ₹18 in tax and ₹118 total.
Starting from ₹118, the tax-free amount is ₹100 and the tax is ₹18.
India GST: 18%, 5% and the 40% special rate
India applies Goods and Services Tax (GST). Following the 56th GST Council changes, the main structure uses an 18% standard rate, a 5% merit rate and a 40% special rate for specified luxury or demerit goods and services. Most revised rates took effect on 22 September 2025; some notified supplies are exempt.
GST is dual: an intra-State supply normally splits the total rate between CGST and SGST, while IGST applies to inter-State supplies. Classification and place-of-supply rules determine the actual treatment.
Rupee example and what this calculator omits
For a taxable value of ₹1,000, 18% GST is ₹180 and the total is ₹1,180. On an intra-State supply at that total rate, the charge is commonly shown as 9% CGST plus 9% SGST.
The calculator adds or removes only the selected total percentage. It does not split CGST, SGST and IGST, classify goods or services, apply place-of-supply rules, calculate cess, input tax credit, exemptions or returns. The result is an orientation aid, not personalised tax advice.