The undebited credit card installment payment is the actual money that needs to be repaid. According to the query related information, if the credit card installment has not been debited, it is recorded in installments. The amount that will be deducted on the bill repayment date is the actual amount to be repaid. Credit card bill installment refers to applying for installment payment for the bill that has been issued and paying it back to the bank on a monthly basis.