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| Base amount | ₹0.00 |
| Discount | -₹0.00 |
| Taxable value | ₹0.00 |
| Tax (18%) | ₹0.00 |
| Total | ₹0.00 |
🧾 Supports GST-exclusive and inclusive modes. Calculations run instantly in your browser — no data collected.
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Free GST & invoice calculator for India
Calculate GST in seconds — whether you need to add tax to a base price (exclusive) or extract it from a total (inclusive). Supports all standard Indian GST slabs (5%, 12%, 18%, 28%) plus discounts, making it perfect for freelancers, consultants, and small businesses raising invoices.
Exclusive vs inclusive GST
Add tax (exclusive): your price is before GST, and tax is added on top — the usual way to quote B2B. Extract tax (inclusive): your price already includes GST, and the tool works out how much of it is tax — useful for retail pricing and reconciliation.
Accurate & private
Every figure is calculated instantly in your browser. No amounts, client names, or invoice data are ever sent anywhere — ideal when handling sensitive financial numbers.