Like ordinary loans, the 20th of the last month of each quarter is the interest settlement date, and interest is paid the next day. I just improved the deposit method, that is, if there is enough deposit on my father's card to pay interest, the system will automatically deduct the interest of this quarter at the end of the quarter on the evening of the 20th. What is not deducted will automatically become off-balance sheet interest. The credit society informs it to settle the interest. Theoretically, not paying the card interest on time will affect the credit line and the future loan line! ! 1