A sheet handling apparatus includes a mounting unit configured to mount a storage bag, a holder configured to support a first part of the storage bag mounted to the mounting unit on the holder and hold a second part being lower than the first part of the storage bag, the holder being capable of moving along an first direction in which the sheets are sent from the opening into inside storage bag and a second direction opposite to the first direction. The holder approaches the mounting unit in the second direction opposite to the first direction in a state where the second part of the storage bag is held by the holder before the sheet is stored in the storage bag mounted to the mounting unit.