PAN refers to the Permanent Account Number. PAN number is constructed from 10-digit alphanumeric wide variety issued through Income tax department to everyone who applies for PAN card. apply pan card online PAN number is unique to every PAN card holder. It also serves as an identification proof. As soon as pan card is issued, it stays legitimate for the whole life of the pan card holder. The primary goal of pan is to use a typical identification key to song economic transactions that would have a taxable issue to save you tax evasion. Pan card is not always suitable as a evidence of Indian citizenship.