QAB charges refer to the Quarterly Average Balance charges that some banks impose on their customers. The QAB charges are the average balance that a customer needs to maintain in their account over a quarter. If the minimum balance is required for a quarter, it is known as the “Quarterly Average Amount (QAB)”. The QAB charges depend on the type of savings account you hold with the bank and the location or branch of the bank. If a customer fails to maintain the minimum balance, the bank may charge them a maintenance fee. The QAB charges are subject to change, and customers can check them with their local bank branch or the banks official website. The charges for non-maintenance of QAB in Current and PNB Smart Banking Current Account and QAB in Current Account are revised periodically. The QAB charges are calculated by computing the average balance on a quarterly basis, i.e., once every three months.