Every credit card has a billing date, and 20 days after the billing date of CCB credit card is the due repayment date. As long as the payment is made in full according to the bill amount before the due repayment date, the consumption part can enjoy interest-free treatment.

According to this rule, the interest-free period of CCB credit card is 20-50 days. How to understand it?

Assume that the landlord's bookkeeping date is 26th of each month, and transactions such as credit card consumption and cash withdrawal from 27th of each month to 26th of the following month will be recorded on 26th of the following month, forming a bookkeeping cycle, and the due repayment date is 20 days after the bookkeeping date, namely 15 or 16 of the second month (because there are different months).

If you swipe your card at 1/27, you swipe your card at 2/26, and the repayment date is 3/ 18. There is a 50-day interest-free period from 1/27-3/ 18. 128 swipes the card, and the bill is also settled on 2/26, and the money is paid back on 318, with an interest-free period of 49 days, and so on. The landlord swipes the card on 2/26, so this card is settled on 2/26, and the due repayment date is 318, from 2/26 to 3/8. To sum up, the closer the bill is to the future bill date, the longer the interest-free period you can enjoy (provided that the landlord pays back the money in full according to the amount written on the bill and the credit card does not charge interest).