This disclosure relates to a cashbag sealing system. The system comprises a banknote transport mechanism operable to transport a banknote to a storing unit. The storing unit includes a banknote storing bag detachably coupled to the storing unit, and an escrow plate operable to escrow the banknote before the banknote transported to the storing unit is stored in the banknote storing bag, wherein the escrow plate is operable to move from a horizontally extending hold position to a downwardly or obliquely downwardly extending release position, and wherein the banknote transported to the storing unit is escrowed on the escrow plate when the escrow plate is located at the hold position. The system further comprises a sensor configured to detect a presence of the banknote on the escrow plate, and measure a level of banknotes in the banknote storing bag.