The PAN is your Permanent Account number. It is a unique 10 digit number allotted to Indians, usually those who are liable to pay tax to the government of India. It is used to identify and make out the list of all taxpayers of India. Once the PAN Card is issued, it will remain valid for the full time of that person to whom it is issued. PAN card in India and along can be your address proof or identity proof, it plays a major role in ensuring KYC compliance in a Bank Account.
According to the Central Board Direct Taxes of India, it is a mandate to submit a copy of the PAN Card for all cash transactions above Rs 50,000. The Central Board of Direct Taxes (CBDT) has made some amendments to the income-tax rules on January 8, 2017. It has directed all banks to link the Permanent Account Number (PAN) or Form No. 60 (where PAN is not available) to all existing bank accounts by 28 February 2017, if not done already. Basic Savings Bank Deposit Accounts (BSBDA) are excluded from it.
Paytm Bank accounts are being created by almost every one of us. You cannot operate the bank account without linking of PAN Card.
Here is the procedure of linking PAN Card with Paytm bank account