Skip to content

GST Calculator

GST Calculator

Runs in your browser. Nothing you type is sent or saved.

How GST Calculator works

Enter the amount and choose a GST rate. Choose "Add GST" if your amount is the price before tax, or "Remove GST" if your amount already includes tax. You get the base price, the GST amount and the final price.

The GST amount is also split equally into CGST and SGST, which is how it appears on an invoice for sales within the same state.

When it helps

  • Making invoices and quotations
  • Finding the price without GST from a bill
  • Checking a shop or supplier bill
  • Quick tax estimates for small business

Frequently asked questions

Which GST rate should I choose?

It depends on the product or service. Common slabs are 5%, 12%, 18% and 28%. Check the official GST rate for your item, because rates can change.

What are CGST and SGST?

For a sale inside one state, GST is shared equally between the Centre (CGST) and the State (SGST). For sales between states, the whole amount is IGST.

Is this a substitute for an accountant?

No. It is a quick helper for simple amounts. Ask a tax professional for filing and compliance.