A transaction processing apparatus includes: a communication unit which performs communication relating to a settlement process of transaction content using a card, with a predetermined settlement destination apparatus; a magnetic card reader unit which reads card information, which is used in the settlement of the transaction using the card, from the card; an input unit to which information regarding various matters relating to the settlement process of the transaction content using the card is input; and a printing unit which prints the card information and various matters of the transaction content as an offline settlement slip, according to the settlement process of the transaction content using the card, when the communication relating to the settlement process in the communication unit is not available. The risk of the transaction information regarding a settlement process performed in an offline state being taken is reduced. The possibility of losing the transaction information tanked in a broken transaction processing apparatus is reduced, while also reducing the complicatedness of a settlement procedure.