Goods & Service Tax Identification Number (GSTIN) is a state-specific unique number based on PAN. GSTIN is a 15 digits registration number consisting of state code, PAN, entity code, and the check digit.
GSTIN of a person can be identified based on PAN by following the below procedure :
Step 1– Visit GST portal
Step 2– Click on “Search Taxpayer” tab
Step 3– Select “Search by PAN”
Step 4- Enter the PAN number of the dealer and character reflecting in the image
Step 5- Click on “Search”
The website will show the details of the GSTIN registration held against the PAN which has been provided.