Bill Central Time & Billing - Version 3.0 Bill Central is a professional time and billing system suitable for anyone who must invoice clients for time or services rendered. This useful program also acts as a management tool to allow you to track your clients' billing history and to analyze the effectiveness of your operation and billing procedures. Additional program features include recurring billing, project tracking, customizable invoice forms, and extensive reporting and printing capabilities. The program is well designed and easy to understand and navigate. A network/multi-user version is also available.