The Tax Payer's Identification Number (TIN) is new unique registration number that is used for identification of dealers registered under VAT. It consists of 11 digit numerals and will be unique throughout the country. First two characters will represent the State Code as used by the Union Ministry of Home Affairs. The set-up of the next nine characters may, however, be different in different States.

TIN is being used for identification of dealers in the same way like PAN is used for identification of assesses under Income Tax Act. All the dealers seeking for new registration under VAT or Central Sales Tax will be allotted new TIN as registration number, however every State Commercial Tax Department have made provisions to issue new TIN to their existing dealers replacing old registration/ CST number.