GSTIN Validator
ValidatorsFreeValidate GSTIN and decode state, PAN, entity type
Enter GSTIN
15-character GST Identification Number
State Code Reference
Enter a GSTIN to validate and decode it
100% private. All processing happens in your browser. No data is ever sent to any server.
About GSTIN Validator
A GSTIN (Goods and Services Tax Identification Number) is a 15-character identifier issued to every GST-registered business in India. This tool validates the format, decodes the embedded state and PAN, and explains what each character means — useful before raising invoices, claiming ITC, or filing GSTR returns.
How to use
- 1
Enter the 15-character GSTIN in the input field.
- 2
The validator checks the format: 2-digit state code + 10-digit PAN + 3 suffix characters.
- 3
It extracts and displays the state name, PAN number, and entity type.
- 4
Invalid GSTINs are flagged with the specific error (wrong length, invalid state code, etc.).
Who uses this tool
- ✦
Verify a client GSTIN before raising a GST invoice to avoid ITC rejection.
- ✦
Cross-check the PAN embedded in any GSTIN against the business's PAN card.
- ✦
Identify the state of registration from the first two digits (e.g. 27 = Maharashtra).
- ✦
Confirm entity type: P = individual, C = company, F = firm, H = HUF, T = trust.
- ✦
Use in B2B transactions where a wrong GSTIN can result in ITC claim denial.