A voucher data management system is provided. An image data generating section reads an original of a voucher to be copied and supplied to a user and generates voucher image data. A database stores the voucher image data. An access code generating section generates an access code for accessing the voucher image data stored in the database. An access code outputting section outputs the access code to the user. An image data outputting section reads out the voucher image data corresponding to the access code from the database in a case where the image data outputting section is accessed from the external terminal based on the access code, determines an attribute of the user who operates the external terminal, determines a range of the voucher image data to be output to the external terminal based on the determined attribute, and outputs the determined range of the voucher image data.