From Longman Business Dictionarybilling cycleˈbilling ˌcycleACCOUNTING the usual time that is taken between sending a customer a list of the amount of money owed for goods or services and the money being received, taking into account the amount of time allowed to customers to payThe monthly billing cycle usually begins on the day that the customer signs up for a service and ends the day before the same day the following month. → cycle