An electronic receipt issuing system including a payment terminal, a customer terminal and a server, wherein the payment terminal comprising: a receipt data transmitting unit for transmitting receipt data to the server when a payment is made for a sales transaction in the payment terminal, the receipt data representing a content of the sales transaction, a payment terminal ID capable of specifying the payment terminal in which the payment is made, and payment date and time information representing a date and time that the payment is made, the customer terminal comprising: a payment terminal ID acquiring unit for acquiring the payment terminal ID after the payment for the sales transaction is completed in the payment terminal; and a receipt issuance requesting unit for transmitting a receipt issuing request to the server at the time the payment terminal ID is acquired or at any time after the payment terminal ID is acquired, the receipt issuing request including the payment terminal ID acquired by the payment terminal ID acquiring unit and ID acquisition date and time information representing an acquisition date and time of the payment terminal ID, and the server comprising: a receipt data storing unit for storing the receipt data, the payment terminal ID and the payment date and time information transmitted by the receipt data transmitting unit in association with each other; a receipt data extracting unit for extracting receipt data associated with the payment terminal ID contained in the receipt issuing request and associated with a first payment date and time information from among the receipt data stored in the receipt data storing unit upon receipt of the receipt issuing request from the receipt issuance requesting unit,on condition that the ID acquisition date and time information contained in the receipt issuing request is after the first payment date and time information among a plurality of payment date and time information stored in association with the payment terminal ID contained in the receipt issuing request and before a second payment date and time information among the plurality of payment date and time information stored in association with the payment terminal ID contained in the receipt issuing request, the second payment date and time information being immediately subsequent to the first payment date and time information; and an electronic receipt issuing unit for issuing an electronic receipt based on the receipt data extracted by the receipt data extracting unit. a payment terminal ID acquiring unit for acquiring the payment terminal ID after the payment for the sales transaction is completed in the payment terminal; and a receipt issuance requesting unit for transmitting a receipt issuing request to the server at the time the payment terminal ID is acquired or at any time after the payment terminal ID is acquired, the receipt issuing request including the payment terminal ID acquired by the payment terminal ID acquiring unit and ID acquisition date and time information representing an acquisition date and time of the payment terminal ID, and a receipt data storing unit for storing the receipt data, the payment terminal ID and the payment date and time information transmitted by the receipt data transmitting unit in association with each other; a receipt data extracting unit for extracting receipt data associated with the payment terminal ID contained in the receipt issuing request and associated with a first payment date and time information from among the receipt data stored in the receipt data storing unit upon receipt of the receipt issuing request from the receipt issuance requesting unit,on condition that the ID acquisition date and time information contained in the receipt issuing request is after the first payment date and time information among a plurality of payment date and time information stored in association with the payment terminal ID contained in the receipt issuing request and before a second payment date and time information among the plurality of payment date and time information stored in association with the payment terminal ID contained in the receipt issuing request, the second payment date and time information being immediately subsequent to the first payment date and time information; and an electronic receipt issuing unit for issuing an electronic receipt based on the receipt data extracted by the receipt data extracting unit.