Each bank's credit card late fee charging standard will be different, but the bank will generally publish the charging standard on the website of official website, suggesting that the landlord can pay attention to it or call the bank's customer service hotline to confirm.

Let me give you an example of the CCB credit card I used.

The late fee for his credit card is charged when the credit card fails to repay or the repayment is the minimum repayment amount. The rate is 5% of the unpaid part of the minimum repayment amount, and the minimum 5 yuan.

Suppose the landlord's bill 10000 yuan, the minimum repayment amount 1000 yuan, and the due repayment date is not paid.

Then for next month's bill, the amount of overdue fine = unpaid part of the minimum repayment amount *5%= 1000*5%=50 yuan.