The credit card payment due date refers to the last date on which the credit card issuing bank requires the cardholder to return the amount due. That is to say, after the card-issuing bank issues a statement (that is, the consumption on the statement day), you should pay off all the expenses you have consumed before the due repayment date. For example, the billing date is the 20th of each month and the repayment date is the 5th of the following month. Then the bills from July 19th to August 20th need to be paid off by September 5th at the latest.

If you consume at different times, you can enjoy different interest-free periods. This is the difference. If you consume on the bill date, the interest-free period will be the shortest. If you consume on the day after the bill date, the interest-free period will be the longest.

For example, for the ICBC credit card I use, the billing date is the 11th and the repayment date is the 5th of the next month. Then June 12th to July 11th is a statistical period for billing. The amount consumed during this period can be repaid no later than August 5th. Then the amount consumed on June 12th can enjoy 55 days of interest-free, and the amount consumed on July 11th can enjoy 25 days of interest-free. Other dates are calculated similarly.

In addition, in order to stimulate your consumption, some banks may launch a campaign to earn double points for swiping your card during the billing period.