HM Revenue & Customs has inked a decade‑long partnership with London‑based Quantexa to deploy artificial intelligence for spotting tax fraud and filing mistakes. The contract, worth £175 million, will let the firm fuse HMRC data with external sources, pinpoint irregularities, and flag mis‑referenced payments. The move follows a U.S. Treasury success that reclaimed over $4 billion in fraud.

Quantexa will keep all data within HMRC’s secure environment, assuring that sensitive taxpayer information never leaves the agency. Its AI models will supplement, not replace, human review, a stance echoed by CEO Vishal Marria who stressed transparency and auditability. The system will also aid customer service, helping taxpayers correct inadvertent errors while hunting down deliberate deception.

This partnership positions the UK at the forefront of government‑led AI adoption, mirroring the US Treasury’s recent gains. By integrating advanced analytics, HMRC aims to tighten enforcement, reduce revenue leakage, and streamline taxpayer interactions. The £175 million investment signals a broader shift toward data‑driven compliance, setting a precedent for other nations to follow suit.

Beyond fraud detection, Quantexa’s platform will help HMRC identify companies or individuals hiding illicit activity, and correct payments misattributed to wrong reference numbers. The agency has emphasized that findings will undergo human verification to avoid false accusations. The initiative reflects a growing trend of public sector entities leveraging AI to enhance accuracy while maintaining accountability.