Abstract: An automatic bill collecting method in an automatic teller machine comprising first bill boxes for respective bill denominations, a detecting device for detecting if each of the first bill boxes is full of a predetermined number of bills, a second bill box for storing bills to be collected, and a memory for storing the number of bills to be collected from the first bill box into the second bill box, comprises the steps of storing in the memory a value equivalent to the number of bills set in a central processor, detecting from the detecting device that the first bill box is full of the predetermined number of bills, and transferring the stored number of bills from the first bill box detected to be full of bills to the second bill box.