HMRC Signs £175M AI Deal With Quantexa to Tackle Fraud
The BBC reported Thursday that the HMRC Quantexa AI contract, valued at £175 million over a decade, marks one of the largest technology commitments by the UK tax authority in recent memory. The deal tasks British data intelligence company Quantexa with deploying AI systems to identify fraudulent activity and correct unintentional filing mistakes faster than current methods allow.
What Quantexa’s Systems Will Do
Quantexa’s platform will cross-reference HMRC’s internal data with external sources. It will help revenue staff spot hidden networks of companies and individuals concealing fraudulent transactions. The technology will also flag legitimate payments sent under incorrect reference numbers, recovering funds that might otherwise go unallocated.
Customer service teams will also benefit. The system is designed to surface relevant information more quickly, cutting the response delays that have drawn complaints from taxpayers in recent years.
A Push for Human Oversight
Quantexa chief executive Vishal Marria told the BBC that automated recommendations will always require a human to review them before action is taken. He described the role of AI in this context as supporting decision-making rather than supplanting it. Marria also stressed that AI in public service cannot function as an opaque system. Decisions must be traceable and explainable, he said, particularly when they affect individual citizens.
He added that HMRC data will never leave the department’s own environment. Staff working on the HMRC engagement will be ring-fenced from the rest of Quantexa’s operations.
Background: Rising Complaints at HMRC
HMRC’s service record has deteriorated over several years, according to figures examined by BBC Business. A Freedom of Information request by the Contentious Tax Group found complaints to the department topped 93,000 in the 2024-25 fiscal year. That compares with roughly 70,000 in 2020-21, with slow response times cited as a primary grievance.
The contract also reflects a broader government priority. Officials have pushed to reduce reliance on large US-based technology platforms, a policy often described as building “digital sovereignty.” Quantexa’s selection as a domestic provider fits squarely within that framework. The firm carries a valuation of $2.6 billion and counts HSBC and Vodafone among its existing corporate clients.
Scale of the Commitment
A 10-year horizon is unusual for government technology contracts, where shorter deals are more common. The extended timeline signals that HMRC expects fraud and compliance challenges to remain significant well into the next decade.
The announcement lands as other UK public bodies face scrutiny over AI procurement, including a separate £330 million contract awarded to Palantir for NHS data infrastructure.
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