This component manages budget billing plans. A utility company normally bills for its services at the end of a supply period, for example, during annual consumption billing. The budget billing plan is the basis for charging budget billing amounts. The following budget billing procedures are provided. Each of these have different ways of determining budget billing dates and amounts, managing budget billing data and posting procedure. The components Portioning and Scheduling (IS-U-BF-RS), Contract Billing (IS-U-BI) and Contract Accounts Receivable and Payable (FI-CA) are involved.