This bookkeeping has nothing to do with the business, but with the bank. For example, if your billing date is May 20th and the repayment date is June 8th next month, then you will be recorded if you swipe your card on May18th! If you repay, it will be June 8! And everyone's billing date and repayment date are different, you can find a bank to exchange! You can look at the unpaid bills and paid bills and know when it's time to pay them back!