The Integrated Revenue Management System ([RMS) is Virginia Tax's legacy core tax processing and accounting system that administers 36 tax types, processing approximately 12 million tax returns a year. Virginia Tax generates revenues of close to $30 billion annually, contributing 95% of the Commonwealth's General Fund revenue. IRMS was developed and implemented from 1999 -2005. Multiple studies affirmed the need to replace IRMS, and a 2022 assessment recommended the procurement of a modern single vendor Commercial Off The Shelf (COTS) integrated tax solution. Item 257D of the 2024 Appropriation Act provided Virginia Tax with funds to be used for the initial costs associated with the replacement of IRMS, which the agency used to develop a Request for Proposal (RFP) for the replacement of IRMS.

The agency issued the RFP for a COTS integrated tax solution to replace IRMS on July 19, 2024. Following the appropriation of funding by the General Assembly and a thorough evaluation of the proposals received, Virginia Tax posted a Notice of Intent to Award on June 26, 2025, notifying the public that FAST Enterprises, LLC (FAST) was the selected vendor. The Notice of Award was posted on July 7, 2025, and a contract for the replacement of IRMS was signed on July 10, 2025. FAST is the leading integrated tax solution vendor in the market, with its GenTax solution currently in use in 34 other state revenue agencies.