GST Calculator India (18%)
Add or remove GST from any INR amount. The rate is editable, and the formulas below show the arithmetic so you can check any invoice by hand.
- Free
- No sign-up
- Nothing uploaded
- Updated for 2026
- Last reviewed October 2026
- Reviewed by the Owoode team
- ₹ INR
- GST 18%
- GSTIN
- A4
- English
Standard rate in India is 18%.
Total with GST
₹1,180.00
- Net amount₹1,000.0084.7%
- GST₹180.0015.3%
- Net amount
- ₹1,000.00
- GST at 18%
- ₹180.00
- Gross amount
- ₹1,180.00
Reduced rates, zero rates and exemptions
Since 22 September 2025 the GST Council's rate changes apply to most goods and services. The Government's explainer for the change records that registration thresholds were not altered, that individual health insurance and individual life insurance policies, including term plans, endowment policies and ULIPs, are exempt, that dairy UHT milk is exempt, and that medicines carry a concessional 5% rate except those specified at nil rate.
Because an exemption removes the right to claim input tax credit on related purchases, a supplier whose output becomes exempt cannot use the credit that belongs to that output. Suppliers should check each item against the current rate notification on the CBIC website before invoicing.
How to calculate GST in India
Add: tax = net × 0.18; gross = net × 1.18.
Remove: net = gross ÷ 1.18; tax = gross − net.
Standard rate in India is 18%.