PROBLEM TO BE SOLVED : To provide a settlement system for performing repeated settlement processing in a predetermined cycle only with simple processing, and for promoting the credit card settlement of a house rent in real estate rental property.SOLUTION : House rent information transmitted from a CAT terminal 14 to a host computer 12 is stored in a repeated settlement database 36, and a sales telegraphic message about the house rent stored in the repeated settlement database 36 is transmitted to settlement request determination means 20 supposing that a guarantee period stored in a guarantee period database 38 is within a valid period.COPYRIGHT : (C)2014, JPO&INPIT