Permanent Account Number (PAN) was introduced by the Indian Income Tax Department in order to facilitate easy retrieval of information and matching information relating to an assessee's investment, payment of taxes, raising of loans, assessment, tax demand, tax arrears etc.
The Permanent Account Number (PAN) is unique, national, and permanent. It is unaffected by a change of address, even between states in India.
Uses of PAN Card:
A person can use a Pan Card as Identity card.
Credit Card/ Loan cannot obtained without having Pan.
If person don’t have pan card then he cannot do some high value transactions like deposit in bank more than Rs. 50,000 in a day, Purchase of more than Rs. 2,00,000 in a day etc.
Registration under GST/ Service Tax/ Excise cannot obtained if you don’t have pan.
If you don’t have pan then your TDS will be deducted at higher rate and you will not able to take credit of that TDS.