GST Calculator
Add or remove Goods and Services Tax (GST) from any amount. Enter the value, pick the applicable GST rate and toggle between exclusive (add GST) or inclusive (extract GST) mode. Common Indian GST slabs — 0%, 5%, 12%, 18% and 28% — are one click away.
How to use
- 1
Enter the amount
Type the monetary value you want to compute GST on. The field accepts decimals and thousands separators.
- 2
Pick the GST rate
Use a quick preset chip (0%, 5%, 12%, 18%, 28%) or type a custom rate. The default is 18% — the most common Indian GST slab.
- 3
Choose the mode
“Add GST to net” applies GST to a tax-exclusive amount. “Remove GST from gross” extracts the GST component from a tax-inclusive price.
- 4
Copy the breakdown
Read the net, GST and gross totals, then click Copy to send the full summary to your clipboard.
Common use cases
- Work out the GST component of a tax-inclusive MRP before filing a return.
- Quote a tax-exclusive price to a business customer and add 18% GST on top.
- Split a mixed invoice line into taxable value and tax payable.
- Quickly verify the GST shown on a vendor bill by recomputing it from scratch.
Limitations
- This calculator produces an estimate only and is not professional financial, tax or investment advice. Always confirm the underlying formulae with your accountant, bank or financial advisor before making decisions.
- Rates vary by country, region and product category — always confirm the applicable GST rate for your jurisdiction.
- The calculator applies a single rate to the full amount. It does not model tiered, exempt or zero-rated supplies.
- Negative inputs are treated as zero to keep the result meaningful.
Frequently asked questions
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