Credit card spending can enjoy interest-free period. If the current bill is not fully paid off on time, interest will be calculated from the bookkeeping date (usually the day after consumption), and the daily interest rate is five ten thousandths, which is called late payment fee. 1. You can enjoy the interest-free period by swiping a credit card. Interest-free period means that you don't have to pay any interest if you pay off all the consumption money before the final repayment date. The interest-free repayment period is 20 days to 50 days, depending on the specific time of your consumption. If your consumption is before the current bill date, it will be included in the current bill; You can enjoy a longer interest-free period if you include it in the next bill after the bill date. 2. If you don't pay off all the bills in the current period on time, it will be regarded as using revolving credit, and all the consumption in the current period will bear interest from the bookkeeping date (usually the day after consumption), with a daily interest rate of 0.5 ‰ until you pay off all the bills. If you use cash in advance.