Free GST Calculator India

Add GST to a price or extract GST from a tax-inclusive amount. Choose the applicable rate to estimate taxable value, GST and total.

Helpful note

This calculator is for estimation only. Confirm the correct GST rate and invoicing treatment using official Indian tax guidance.

About GST Calculator

Calculate an estimate of GST and the total amount for common GST rates. Confirm the applicable rate and classification from official tax guidance before issuing an invoice.

How to use this tool

  1. Enter the amount and select whether to add or remove GST.
  2. Choose the applicable GST rate.
  3. Review the taxable amount, GST amount and final total.

Frequently asked questions

For an amount before tax, GST is the amount multiplied by the selected rate. For a tax-inclusive amount, the GST component is extracted from the total.

No. The correct rate depends on the goods or services and applicable rules. Verify the rate before invoicing.