There is provided a settlement system comprising a mobile communication terminal, a settlement input device configured to output data of a charge, and a settlement device able to transfer money from a first account to a second account. The settlement input device comprises a first transmission unit configured to transmit the data of the charge to the mobile communication terminal, and a second transmission unit configured to transmit the data of the charge, identification data of the mobile communication terminal, and identification data of the settlement input device to the settlement device. The settlement device comprises a control unit configured to transfer an amount of money determined by the data of the charge from the first account to the second account, and a transmission unit configured to transmit the data of the amount of the transferred money to the mobile communication terminal. The mobile communication terminal comprises a first reception unit configured to receive the data of the charge from the settlement input device, a second reception unit configured to receive the data of the amount of the transferred money from the settlement device, and a display.