Is this GST number valid? Check in one second.
Paste one or hundreds of GSTINs. We check the 15-character format, the state code and the check digit, and show the state, PAN and type of business hidden inside each number.
Checks format, state code and the check digit – offline, nothing is sent anywhere. Up to 200 at a time.
Results appear here as you type.
Want the business name & address too? Our GST Billing CRM fetches them from the GSTIN when you make a bill – no typing.
See GST Billing CRM →How to use it
- 1Paste GSTINs – one per line, or separated by commas.
- 2Each one is checked instantly for format, state code and check digit.
- 3Fix typos shown in red before you raise the bill or file returns.
More free tools
FAQ
GSTIN Checker: questions
15 characters: 2-digit state code, the 10-character PAN of the business, an entity number, the letter Z, and a check digit that catches typing mistakes.
It means the number is correctly formed and not mistyped. Whether the registration is currently active is shown on the GST portal – our GST Billing CRM fetches that with the business name and address.
Yes – paste up to 200 at a time, for example from your customer list in Excel.
No. The check runs entirely in your browser.
Billing customers from a GST list every month?
GST Billing CRM: GSTIN auto-fill, stock, payments and GST reports – no monthly fee.

