To provide a billing amount processor, a billing amount
processing method, and a billing amount
processing program capable of setting a monthly repayment sum on the customer side in an extreme-type loan contract, thereby shortening a repayment term and reducing a bad debt risk on the financing side.SOLUTION: A billing amount processor comprises: a monthly repayment sum setting
mask in which an outstanding loan balance is associated with a monthly repayment sum and registered; a
storage area for storing contract data including
customer identification, the date of contract, the date of cancellation, an extreme amount, a
credit limit, a credit frame, a loan interest rate, a delinquency interest rate, and the monthly repayment sum updated on the basis of the outstanding loan balance after loan transactions by referring to the monthly repayment sum setting
mask, and monthly repayment sum change data which is set upon the customer's request and includes the
customer identification and the monthly repayment sum after the change; and a billing amount calculation unit for comparing the monthly repayment sum in the contract data with the monthly repayment sum after the change in the monthly repayment sum change data for a target month and year and determining the higher amount as the billing amount.SELECTED DRAWING: Figure 1