The late payment fee is equal to the number of overdue loans multiplied by the number of overdue days multiplied by the daily overdue interest rate. According to the information of China Travel Service. According to different banks and different loan products, the late payment fee will range from two ten thousandths to five ten thousandths per day. The late payment fee is equal to the number of overdue loans multiplied by the number of overdue days multiplied by the daily overdue interest rate. Late payment fee refers to a certain percentage of late payment fee due to failure to pay taxes according to the tax payment deadline or failure to repay the loan according to the repayment deadline.