A permanent account number (PAN) is a ten-character alphanumeric identifier, issued in the form of a laminated "PAN card", by the Indian Income Tax Department, to any "person" who applies for it or to whom the department allots the number without an application.

For minors, it also serves as an important proof of identification.

A PAN is a unique identifier issued to all judicial entities identifiable under the Indian Income Tax Act, 1961. The income tax PAN and its linked card are issued under Section 139A of the Income Tax Act. It is issued by the Indian Income Tax Department under the supervision of the Central Board for Direct Taxes (CBDT) and it also serves as an important proof of identification.

Obtaining a PAN may be optional or voluntary like a passport, driving license, Aadhaar etc. However, its use is mandatory at required places, like PAN for high-value financial transactions, driving license for motor driving, passport for foreign travel etc..

One can apply for PAN by submitting the prescribed PAN application to the authorized PAN agency of the district or through online submission to NSDL Website, UTI along with 2 recent passport size color photographs, proof of ID, Address and Date of Birth and fee. In case of re-print (re-issue), a photocopy of the old PAN is also required. It takes about 10–15 days to receive the card.