The billing techniques to support multiple services in an ATM based broadband access network have been rarely developed. In fact, the management techniques including accounting management have only focused on a single service environment such as PSTN thus far. In this paper, we present an accounting management system, called rtFAMS, designed and implemented to provide multiple Value Added Service Providers (VASPS) the charging records for the multiple services in a broadband access network. The architecture is based on OSI system management infrastructure and TMN Q3 interface to acquire accounting information from agents in the ATM cross-connecters as well as to process the billing mechanisms in the manager. This system Is designed to actively adopt the rapidly changing service environments and B-ISDN network management techniques. It also provides real-time accounting information to users using Web in addition to supplying the billing records to VASPs.