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GST Tool

GSTIN Validator

Instantly verify whether a GSTIN is structurally valid — including format, embedded PAN, entity type and checksum — and see a full field-by-field breakdown.

Enter GSTIN Details

Type or paste a GSTIN to check its validity and structure

GSTIN Number

Format: 2-digit state code + 10-char PAN + entity no. + Z + checksum

Validation Checks

Full validation also verifies the checksum digit

Your GSTIN Validation Results

Enter a GSTIN and click "Validate GSTIN" to see the full breakdown here.

Format & Checksum Verification Embedded PAN & Entity Type GST State Code Decoding

GSTIN Format Breakdown (15 Characters)

  • Digits 1–2GST State Code
  • Digits 3–7PAN — First 5 Letters
  • Digits 8–11PAN — 4 Digits
  • Digit 12PAN — Last Letter
  • Digit 13Entity / Registration No.
  • Digit 14Default "Z"
  • Digit 15Checksum Digit

A valid GSTIN is always exactly 15 alphanumeric characters

PAN Entity Type (4th Character)

  • PIndividual
  • CCompany
  • HHUF
  • FFirm / LLP
  • AAssociation of Persons
  • TTrust
  • BBody of Individuals
  • LLocal Authority
  • JArtificial Juridical Person
  • GGovernment

The 4th character of the embedded PAN identifies the holder type