In general, a credit card can pay off the bill within the time from the issuance of the bill to the last repayment date.

Since the credit card has an interest-free period, as long as the bill is paid off between the billing date and the repayment date, there will be no cost. In another case, if you pay off the bill before the bill date, then the bill amount on the bill date is 0, so there is no need to pay off the current bill.