GSTIN Validator

Check GSTIN structure before you raise an invoice.

15 characters — state + PAN + entity + Z + checksum

How to validate a GSTIN

Check GSTIN length, state code, PAN-like segment, Z marker, and checksum digit.

How it works

  1. 1Paste the 15-character GSTIN.
  2. 2Click Validate.
  3. 3Review valid/invalid details.

Frequently asked questions

Does valid mean registered?

No. This checks structure only, not live GST portal registration.