GSTIN Verifier Online 2025 (Verify GST Number & PAN)
Verify the authenticity and mathematical checksum of any 15-digit Goods and Services Tax Identification Number (GSTIN). Extract embedded PAN details, State Code, and registration structure instantly.
15-Digit GSTIN Structure Formula
[22] [AAAAA1111A] [1] [Z] [5]- đ Chars 1-2 (State Code): 2-digit Indian state code (e.g. 27 for Maharashtra, 07 for Delhi).
- đ Chars 3-12 (PAN Number): Permanent Account Number of the business proprietor or company.
- đ Char 13 (Entity Number): Serial number of business registrations within the same state (1-9, A-Z).
- đ Char 14 (Default Symbol): Always the letter 'Z' by default under GST rules.
- đ Char 15 (Checksum): Luhn Modulo 36 algorithm check digit for error detection.
Indian State GST Code Lookup Table
| State / Union Territory | 2-Digit GST Code | State Alpha Code |
|---|---|---|
| Delhi (NCR) | 07 | DL |
| Maharashtra | 27 | MH |
| Karnataka | 29 | KA |
| Tamil Nadu | 33 | TN |
| Uttar Pradesh | 09 | UP |
| Gujarat | 24 | GJ |
Frequently Asked Questions (FAQs)
What is the 15-digit structure of a GSTIN?
A GSTIN consists of 15 alphanumeric characters: Digits 1-2 (State Code), Digits 3-12 (10-Digit PAN Number), Digit 13 (Entity Number), Digit 14 ('Z'), Digit 15 (Checksum).
Why is it important to verify GSTIN before issuing an invoice?
Verifying the recipient's GSTIN ensures Input Tax Credit (ITC) eligibility under GSTR-2B. Invoicing an invalid GSTIN leads to ITC disallowance during tax audits.
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