GST Calculator

Calculate GST inclusive/exclusive, CGST/SGST/IGST

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Instant estimate · sign in to save

Fill in the fields above and select Calculate for an instant estimate.

Computed in your browser from the same formulas the full app uses — it is not saved and does not factor in every detail (taxes, exact compounding dates, fees) the way a saved scenario does. Sign in to save, share, or view history →

How is GST Calculator calculated?

GST adds (or extracts) tax at the selected slab rate on the base amount — inclusive calculations back out the base amount from a GST-inclusive price using amount ÷ (1 + rate/100).

Enter the amount and select the GST rate.
Choose whether the amount is GST-inclusive or exclusive.
The calculator computes the GST amount and the other (inclusive/exclusive) value.

Frequently asked questions

What are the standard GST slab rates in India?

Common GST slabs are 0%, 5%, 12%, 18%, and 28%, depending on the category of goods or services.

What is the difference between GST-inclusive and GST-exclusive amounts?

A GST-inclusive amount already has tax built in; a GST-exclusive amount does not. This calculator can convert between the two at your chosen rate.

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