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GSTIN Validator

Validate a 15-character GSTIN against its structure and check-digit algorithm, and read the embedded state code and PAN. Format validation only — it does not query the GST portal.

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How to use the GSTIN Validator

  1. 1Paste the 15-character GSTIN.
  2. 2See whether it is structurally valid.
  3. 3Read the decoded state and PAN.

Frequently asked questions

Does this confirm the business is registered?+

No. It verifies the number is well-formed and passes the official checksum; it does not check live registration status with GSTN.

What makes a GSTIN valid here?+

A correct 15-character pattern (state code + PAN + entity + Z + check digit) and a matching check digit.

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