All organizations which are required to furnish return of income under section 139(4A) and (4C) should apply for a Permanent Account Number (PAN). As the name suggests, it is a taxpayer’s permanent identification number allotted by the income-tax department. PAN once allotted remains valid forever unless it is cancelled or changed by the department. PAN number has 10 alphanumeric characters and issued in the form of a laminated card”.
How to apply for PAN