GSTIN validator

A GST number carries its own state, its owner’s PAN and a checksum. All of that can be read without asking anybody — instantly, and for nothing.

How a GSTIN is put together

Characters	What they are
1–2	State or union territory code
3–12	The registrant’s PAN, embedded verbatim
13	Which registration this is for that PAN, within that state
14	Registration type — Z for a regular taxpayer, other letters for TDS and TCS
15	Checksum over the first fourteen

Want the filings that come with it?

Give us the same number and we will show only the returns your entity actually owes — with the government fee on each.