GSTIN Checker › Help › Using it

How to check if a GSTIN is correct

A GSTIN is 15 characters: state code, PAN, entity number, Z, and a check character. One wrong letter means your buyer cannot get credit, so check it before you bill.

Step by step

1. Type or paste the GSTIN. Spaces and dashes are ignored; small letters become capitals.
2. Read the result. A green tick: well formed and the last character matches. A red cross says what is wrong.
3. Check many at once. Paste a list into Check many GSTINs at once and download the result as CSV.

Worked example

03AAFFG5678L1Z2: 03 = Punjab, AAFFG5678L = PAN (4th letter F = firm), 1 = first registration in the state, Z, check character 2. Typing 03AAFFG5678L1Z3 shows "The last character should be 2".

Common mistakes and how to fix them

• Thinking a correct format means an active registration. The check proves only the number is well formed; see the next article to check the status on the portal.

Related help

All help on GSTIN Checker · Help for the Nivesh Sahayak App