Specifications include, but are not limited to: The new Tax System will provide an automated means to assess and account for real estate and personal property taxes and other miscellaneous taxes, fines and fees assessed and/or collected by the County including vehicle licensing fees, dog licenses, state income tax payments, estimated state income tax payments and public service corporation tax payments. Enhancements should be possible through the use of user-defined screens and menus, interfaces to other systems and report writers. In the event that custom programming is required, the Offeror's proposal must include detailed specifications and pricing. The Tax System shall provide a unified, integrated solution to the County’s taxation processes that complies with all legal taxation requirements. From an end-user perspective, the system shall provide a singular view of taxpayer information, realtime processing of payments, the automation of repetitive and predictable aspects of processes and an easy-to-follow graphical layout. The system should be available at least 99% of the time while efficiently using the County's computer resources. The system should provide for minimal end-user impact when executing long-running batch processes. The Offeror shall provide a mature version of the system and should provide information regarding the implementation of future system revisions, including upgrades, enhancements, modifications, etc. as required by changes to Virginia tax law and/or County procedures.