A PAN Card (Permanent Account Number) is an essential identification card issued by the Income Tax Department of India. It serves as a unique identifier for individuals, businesses, and entities to facilitate tax payments and other financial transactions in India. The PAN is a 10-character alphanumeric code (e.g., ABCDE1234F) that links all financial transactions to the person or entity it is issued to, making it easier for the government to track taxable income.