Abstract: A cash register alarm system for sounding an alarm to the police without delay. The cash register alarm system includes a cash drawer having a bottom wall and a back wall, and also includes a tray having a bottom wall and a back wall and plurality of partitions spaced apart and forming compartments therebetween, and further includes a plurality of sensors disposed in the compartments in the bottom wall of the tray, and also includes a plurality of electrical current contact members disposed upon the back walls of the cash drawer and the tray. More than one compartment without paper money will expose the sensors to light which will acutate the alarm system to the police.