Is it necessary to charge interest for CCB Longka to buy a car in installments? This is also the most concerned issue for many consumers when buying a car. It is understood that consumers do not have to pay any interest for buying cars by stages through CCB Longka. However, depending on the number of credit card installments, banks will charge corresponding fees or waive them. The formula for calculating the installment fee of related link dragon card: cardholder fee = installment amount? Cardholder's handling fee rate (note: handling fee is charged at one time) Editor: Yang Xiaoxue.