GSTIN Validator & GST Number Checker
Catch typos in any GST number in seconds. See the state, PAN and entity type, or check up to 500 vendor GSTINs at once.
Check a GSTIN
3 Simple Steps
How It Works
Versatile Accounting and Billing Software for Every Sector
What does the GSTIN validator check?
hisabkitab’s GSTIN validator checks the structure of a GST Identification Number: its length, the two-digit state code, the embedded PAN, the registration number and the 15th check digit. A wrong check digit almost always means a typo. That is one of the most common reasons a B2B invoice is reported against the wrong GSTIN in GSTR-1 and the buyer’s input tax credit never shows up in GSTR-2B.
How is a 15-digit GSTIN structured?
Every GSTIN follows the same pattern:
Characters 1–2: state code, such as 24 for Gujarat, 27 for Maharashtra or 29 for Karnataka
Characters 3–12: the PAN of the business
Character 13: the registration number for that PAN in that state, 1 for the first registration
Character 14: “Z” by default
Character 15: a check digit calculated from the first 14 characters
What does the PAN inside a GSTIN tell you?
The fourth character of the PAN, which is the sixth character of the GSTIN, shows the type of entity:
P: individual or proprietor
C: company
F: partnership firm or LLP
H: Hindu Undivided Family
A: association of persons
T: trust
B: body of individuals
L: local authority
J: artificial juridical person
G: government
Format check vs live status check
A GSTIN can pass the format check and still be cancelled, suspended or never issued. Format validation catches typos in bulk. Before a large purchase, or when you add a new vendor, also confirm the status, legal name and return filing on the GST portal’s Search Taxpayer page.
Why accountants check GSTINs in bulk
One wrong character in a vendor master repeats on every bill booked against that party. Checking the full list before month-end helps you catch errors before GSTR-1 is filed, before you reconcile GSTR-2B and before a tax audit. Paste the list, download the CSV and fix only the rows marked invalid.
More free tools from hisabkitab: GST Invoice Generator, MSME 45-Day Payment Calculator, E-Way Bill Validity Calculator, Amount in Words, HSN & SAC Code Finder, Accounting Software Finder.
FAQs
Does a valid result mean the GSTIN is registered?
What is the GSTIN check digit?
Why is the 14th character of a GSTIN “Z”?
What do state codes 97 and 99 mean?
Is the GSTIN list I paste uploaded anywhere?
How many GSTINs can I check at once?
