The CCB Credit Card Management Center stipulates that credit card holders should repay the full amount of the loan on the repayment date, and can enjoy a 50-day interest-free discount. However, CCB also provides a minimum repayment method, so as long as the full repayment is not made, you will no longer enjoy the 50-day interest-free repayment period, and you will also have to pay corresponding interest. CCB credit card interest calculation is calculated from the day the credit card is overdrawn until the loan is paid off. The daily interest rate is 0.5%, and compound interest is charged monthly.