A system is disclosed for managing an offloading service performed by a service vehicle at a disposal site. The system may have an identity detection device configured to generate an identity signal associated with the service vehicle at the disposal site, a scale configured to generate a weight signal indicative of an amount of waste material disposed of by the service vehicle at the disposal site during the offloading service, and at least one processing unit in communication with the identity detection device and the scale. The at least one processing unit may be configured to correlate the weight signal to a customer for which the service vehicle previously performed an onloading service based on the identity signal, and automatically generate an invoice for the customer for the onloading service and for the offloading service.