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GSTIN Validator & Tool
Validate structural correctness of a 15-character GSTIN (GST Identification Number) and decode registration metadata.
Decoding GSTIN structure...
Awaiting GSTIN Input
Enter a 15-character GST registration number above to verify its structural validity and decode taxpayer info.
Understanding GSTIN Format
GSTIN stands for GST Identification Number. It is a unique 15-character alphanumeric identifier assigned to every registered business entity in India. It is structured as follows:
07
State Code
(First 2 digits)
AAAAA1111A
Business PAN
(Next 10 characters)
1
Entity Code
(13th digit/letter)
Z5
Checksum & Default
(Last 2 characters)