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GST Number Validator

Validate GST number format. Decode state code, PAN, entity number. Bulk validation with CSV export.

0/15 characters

Bulk Validation

Enter multiple GSTINs separated by commas or new lines

About GSTIN Format

  • Length: 15 alphanumeric characters
  • Digits 1-2: State code (01-38)
  • Digits 3-12: PAN of the entity
  • Digit 13: Entity number for same PAN in same state
  • Digit 14: Always "Z" (reserved for future use)
  • Digit 15: Check digit (alphanumeric)
  • Note: This tool validates format only, not registration status with GSTN
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Frequently Asked Questions

What is a GSTIN and how is it structured?+
GSTIN is a 15-digit Goods and Services Tax Identification Number. It includes the state code (2 digits), PAN (10 characters), entity number (1 digit), Z by default, and a check digit.
How does GSTIN validation work?+
The tool checks the format, state code validity, embedded PAN structure, and the check digit using the government's standard algorithm.
Can I verify if a GSTIN is active?+
This tool validates the format and structure. To check active status, you would need to verify on the official GST portal.