The billing date of postal credit card is fixed and does not need to be calculated. Users can choose the 3rd, 7th, 1 1, 16, 2 1 or 26th of each month as their own accounting days.
The interest-free period of postal credit cards is from the bank bookkeeping date to the final repayment date, with a minimum of 20 days and a maximum of 50 days. Overdraft cash withdrawal transactions do not enjoy interest-free repayment period.