GST Calculator

Add GST to an amount or remove it. Choose a rate, mode, and intrastate or interstate split.

Amount (excluding GST)

GST rate (%)

Choose a preset or enter a custom rate below.

Custom GST rate (%)

Calculation mode

Split

Intrastate: CGST + SGST. Interstate: IGST.

Frequently asked questions

What is the difference between inclusive and exclusive?: Exclusive amounts do not include GST; the tool adds GST to produce a total. Inclusive amounts already contain GST; the tool removes it to reveal the base amount.
When is CGST/SGST used versus IGST?: Intrastate supplies typically split GST into CGST and SGST. Interstate supplies typically use IGST. The choice depends on the jurisdictions involved; this tool just performs the arithmetic.
Does this tool provide tax advice?: No. It is a general-purpose calculator. Consult a qualified professional for tax filing and compliance.