A receipt issuing apparatus includes a conveying unit conveys a receipt paper which consists of a strip-shaped thermal recording paper and on which pieces of promotion-related information are pre-printed at predetermined positions which are arranged at regular intervals in the longitudinal direction of the receipt paper, a thermal printing unit prints the detail data of a commodity transaction on the receipt paper conveyed by the conveying unit by thermal printing, a mask printing control unit overprints a mask data for hiding the information over the information printed on the receipt paper by the thermal printing unit and an issuing control unit issues a receipt by cutting off the receipt paper on which mask data is printed by the mask printing control unit at a position more upstream than the printing position of the mask data in the conveying direction of the conveying unit.