19 September 2012
TAN - Tax deduction Account Number TIN - Tax Information Network PAN - Permanent Account Number
TAN is allotted to those who are liable to deduct TDS (Tax deducted at source)
TIN is related to Sales Tax every Dealer has a unique TIN no in his state which is allotted by the state sales tax department to whom it is applicable so as to trace the dealer for any reference.
PAN is Permanent Account number which is allotted by the central govt. i.e. Income tax Department (NSDL) to every person as defined in the income tax act