gstin check digit

Here’s a complete break-up of the proposed GST Identification Number. Each taxpayer will be allotted a state-wise PAN-based 15-digit Goods and Services Taxpayer Identification Number (GSTIN). 

• The first two digits of this number will represent the state code as per indian cenus 2011
• The next ten digits will be the PAN number of the taxpayer
• The thirteenth digit will be assigned based on the number of registration within a state
• The fourteenth digit will be Z by default
• The last digit will be for check code. It may be an alphabet or a number.