GST Calculator
Add or remove GST from an amount at any tax rate.
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How to use GST Calculator
- 1Enter your input for gst calculator.
- 2Review the result on this page.
- 3Download or copy your result.
Frequently Asked Questions
What's the difference between adding and removing GST?
"Add GST" takes a pre-tax amount and shows the tax and final price. "Remove GST" takes a tax-inclusive amount and works backward to show the original pre-tax amount.
Which GST rate should I use?
Use whichever slab applies to your goods or service (common slabs are 5%, 12%, 18%, and 28%) — you can also enter any custom rate.
Is this tool really free?
Yes, GST Calculator is completely free to use — no sign-up, no hidden charges.