To perform a taxation business acting operation without being geographically restricted.

A virtual interview is smoothly performed and the taxation business acting operation is implemented without visiting a customer by managing schedule information of a virtual interview by a schedule management means (27) having a timer function, outputting the schedule information to a head office side control means (21) to announce the start of the interview to a taxation business acting trader and outputting the schedule information from the head office side control means (21) to a customer office side control means (31) via the Internet (10) to announce the start of the interview also to the customer.