GST Calculator
Calculate Goods and Services Tax (GST) easily for Indian invoices.
Secure & Private • Processed Locally
Custom:%
₹
Net Amount₹0
GST (18%)₹0
Total₹0
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Your data never leaves your device. All processing happens locally in your browser using secure WebAssembly and HTML5 APIs. We do not store, keylog, or transmit your input.
Why Use Our Tool?
Common Slabs
Presets for standard Indian GST rates (5%, 12%, etc.)
Reverse Calculation
Easily remove GST from a total amount to find the base price.
Instant Results
See the Net, Tax, and Total breakdown instantly.
How to Use
1
Select Rate
Choose the applicable GST slab.
2
Enter Amount
Type the price value.
3
Choose Type
Select if the price already includes tax or excludes it.
Frequently Asked Questions
What is 'Inclusive of Taxes'?
It means the amount you entered is the final price the customer pays, meaning tax is already inside it.
What are the standard GST rates?
In India, the most common rates are 5%, 12%, 18%, and 28% depending on the goods or services.