The interest-free period of a credit card refers to the interest-free period before the cardholder repays after the credit card is swiped. Generally, it means that the customer will have this interest-free period after spending.

As far as I know, the banks with the longest interest-free period are Bank of Communications, Industrial and Commercial Bank of China and Agricultural Bank of China, and the interest-free period can reach as many as 56 days.

If you want to enjoy the longest interest-free period, then I suggest you concentrate on spending on the second day after the bill date of each month. So your interest-free repayment period is the longest.

I hope I can help you.