PROBLEM TO BE SOLVED : To surely reduce the risk of rent income reduction accompanying troubling of a lease real estate while suppressing a load on a property owner.SOLUTION : A lease-time risk compensation system 10 is provided with a calculation device 14 that executes a process for acquiring information about a trouble occurring in the lease property of a predetermined customer from a predetermined device, determining whether the customer has concluded a prescribed contract by referring to prescribed information, and when the customer is a contracted customer, transmitting a request for paying at least a rent income compensation money amount of a prescribed restitution expense and the rent income compensation money amount regarding the lease property to the financial institution account of the contracted customer who is an owner of the lease property to a financial institution server 30.SELECTED DRAWING : Figure 2COPYRIGHT : (C)2017, JPO&INPIT