Credit card consumption of China Construction Bank has an interest-free period. As long as the user can repay in full within the interest-free period, the credit card has no interest. Specific calculation of interest outside the interest-free period of CCB credit card: (current consumption amount-minimum repayment amount) *0.05%* (actual repayment date-due repayment date). In addition, if the user does not repay in full, he will no longer enjoy the 50-day interest-free repayment period and pay the corresponding interest at this time.

CCB's credit card interest is calculated from the date of credit card overdraft until the loan is paid off. The daily interest rate is 0.5 ‰, and compound interest is charged monthly.