How GST Calculator works

Add GST to a base amount or extract GST from a tax-inclusive amount with common Indian rate presets.

The formula

Add: GST = base × rate. Remove: base = inclusive amount ÷ (1 + rate).

A practical example

Adding 18% GST to ₹1,000 gives ₹180 tax and a ₹1,180 total.

Important limitations

Results are estimates based only on the values you enter. They do not include every fee, tax, timing difference, market movement or product rule.

Frequently asked questions

Can I remove GST from an inclusive price?

Yes. Choose Remove GST and enter the tax-inclusive amount.

Which rates are available?

Common 0%, 5%, 12%, 18% and 28% presets plus a custom rate.

Is this tax advice?

No. Confirm the applicable classification and rate with official guidance.