To improve user convenience. [Solution] A
payment server comprising: an acquisition unit that acquires first information relating to a
payment, including the first
payment amount of the goods or services to be purchased by the user using the electronic payment service and user identification information for identifying the user, from either or both of a user terminal device operated by the user and a terminal device of a merchant of the electronic payment service, and second information indicating that the payment of the first information has been confirmed from the merchant's terminal device; and a
processing unit that, when the first information is acquired, sends an instruction to a financial institution
server to move the first payment amount from the
bank account of the user identification information to a temporary receiving account for temporary
receipt, thereby moving the first payment amount to the temporary receiving account, and when the second information is acquired, sends an instruction to a financial institution
server to move the first payment amount from the temporary receiving account to the
bank account of the electronic payment service, thereby moving the first payment amount to the
bank account of the electronic payment service.