GST Calculator

The GST Calculator adds or removes Goods and Services Tax for any amount across the common Indian slabs of 5%, 12%, 18% and 28%. It shows the net amount, the tax component and the gross total, and can split the tax into CGST and SGST where intra-state supply applies, so the breakdown matches what you need on an invoice.

Shopkeepers, freelancers and small businesses use it to price products, prepare bills and check the tax on purchases without re-deriving the maths each time. Working in both directions — tax-inclusive and tax-exclusive — covers the everyday situations that come up in billing, where you sometimes know the base price and other times only the final figure.

All calculations happen entirely in the browser, so the amounts you enter are never uploaded or stored. With nothing to install and no sign-up, it is a fast, private helper for routine GST work that you can rely on whenever a quick, accurate figure is needed.