GSTIN Validator
Verify any GST Identification Number — check format, decode state, taxpayer type and PAN.
15 characters — 2 digit state + 10 digit PAN + 1 entity + Z + checksum
Valid GSTIN format — checksum verified
GSTIN Breakdown
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How to Validate a GSTIN
- 1Paste your GSTIN — type or paste the 15-character GST number in the input field.
- 2Click Validate — the tool checks the format, state code, PAN structure and checksum.
- 3Review the breakdown — see state, PAN, entity number and taxpayer type decoded instantly.
Frequently Asked Questions
What is a GSTIN?
GSTIN (Goods and Services Tax Identification Number) is a unique 15-digit alphanumeric code assigned to every GST-registered business in India.
How is a GSTIN structured?
A GSTIN has 15 characters: positions 1–2 are the 2-digit state code, positions 3–12 are the PAN of the taxpayer, position 13 is the entity number, position 14 is always Z, and position 15 is a checksum digit.
Is this GSTIN validator accurate?
The tool validates the GSTIN format, checks the embedded state code, verifies the PAN structure, and validates the checksum digit — making it highly accurate for format-level verification.
Does it connect to the GST portal?
No. This is a client-side format validator. For official status checks, visit the GST portal at gst.gov.in.
What state codes are used in GSTIN?
India has 37 state/UT codes in GSTIN ranging from 01 (Jammu & Kashmir) to 38 (Ladakh). The tool decodes and displays the state name from the first two digits.
Is this tool free?
Yes. Gopafy's GSTIN Validator is 100% free with no login required.