According to an embodiment, a teller cash recycler may comprise: a handling unit including a deposit section in which banknotes are deposited and a withdrawal section in which banknotes are withdrawn; a safe having at least one storage unit in the inside thereof where banknotes are stored; a door for selectively opening and closing the safe; a first transfer unit for transferring banknotes between the handling unit and the storage unit; a cassette mounting unit provided in the outer of the door; and a second transfer unit for transferring banknotes between a cassette mounted on the cassette mounting unit and the handling unit, or the cassette mounted on the cassette mounting unit and the first transfer unit.