The invention relates to a method for threshold value relates control of at least one service in a data or telecommunication system, comprising the following steps: a) defining at least one threshold value for a prepaid credit for the payment of said service; b) defining at least one action, especially control of the scope of said service, in the framework of said service, said action being able to be triggered at said threshold value; c) signalling if the threshold value(s) is/are exceeded or not respected; and d) triggering the action in response to the signal.