A method is provided for handling cassettes for bank notes, for automatic tellers and/or deposit devices. The method for handling cassettes for bank notes, for automatic tellers and/or deposit devices, includes the step of determining the filling level of the cassette or cassettes, comparing the determined filling level of each cassette with at least one threshold value lower than a maximum capacity of the particular cassette, and wherein, if the comparison yields an excess, the step of producing a signal indicating the exceeding of the threshold value, causing replacement of the cassette for which the signal indicating the exceeding of the threshold value was produced.