GST tools
Free tools for everyday GST work: adding GST to a price, checking a GSTIN, working out a late fee and keeping track of due dates.
GST calculator
Add GST to a price, or find the GST in a price. See the CGST and SGST, or IGST.
Late fee and interest calculator
Work out the late fee for a GSTR-3B or GSTR-1 filed after its due date, and the interest on GST paid late.
GSTIN checker
Check a GSTIN for typing mistakes before you put it on an invoice. It can’t tell you if the business is registered.
GST due dates
Upcoming GST due dates, and a way to add them to your calendar app.
What to expect from every tool
- It works on your own phone or computer. What you type into it, such as amounts and GSTINs, isn’t sent to us or saved.
- Its figures have a source. Each tool page links the official sources its rates, fees, dates and codes come from, with the date we last checked them.
- It’s free, with no sign-up.
The tools give general information, not professional advice. To file a return or pay tax, use the official GST portal, gst.gov.in.