taxInvoice.appGSTIN validator
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Free PDF, checked for the required fields.
GSTIN structure
| Position | Meaning | Example (27AAPFU0939F1ZV) |
|---|---|---|
| 1-2 | State code | 27 = Maharashtra |
| 3-12 | PAN of the business | AAPFU0939F |
| 13 | Entity number for the same PAN in that state | 1 |
| 14 | Default letter | Z |
| 15 | Check character | V |
Related guides
Frequently asked questions
What is the structure of a GSTIN?
A GSTIN has 15 characters: 2-digit state code, 10-character PAN of the business, 1 entity number, the letter Z (default), and 1 check character.
Does a valid format mean the GSTIN is registered?
No. This tool checks the structure and the check character only. To confirm a GSTIN is active and see the legal name, use the search on the official GST portal.
Why does my GSTIN fail the check character?
Usually a typo: two characters swapped or a 0/O or 1/I mix-up. Copy it from the registration certificate.