A computer-assisted system and method for auditing a communications bill wherein billing information is collected, reformatted and stored for use in a set of automated audits. The system and method for auditing a communications bill further collects data from other external systems such as a work order system, a trouble ticket system, an inventory system, an AMA/SMDR data source, an SS7 event record data source, or another source of call records or billing records. The data collected is used in a set of automated audits to determine if the communications bills contain errors. The system and method will further perform historical audits, and generate and manage the billing dispute process. The system and method will further provide audit reports and interface to an accounts payable system.