NAO Inquiry Launched into HMRC's Flawed Child Benefit Anti-Fraud Scheme
The UK's public spending watchdog, the National Audit Office (NAO), has initiated a formal investigation into a controversial government anti-fraud scheme that led to thousands of families being incorrectly stripped of their child benefit payments. This inquiry follows revelations that HM Revenue and Customs (HMRC) relied on defective Home Office travel records to identify parents suspected of living abroad while claiming child benefit.
Flawed Data Leads to Widespread Errors
Between July and October last year, HMRC suspended payments for 23,794 families as part of an anti-fraud crackdown. The scheme utilised travel data from the Home Office, which recorded outgoing journeys—including unused airline bookings—and frequently failed to log return trips by holidaymakers and business travellers. HMRC accepted this data in good faith, resulting in erroneous assumptions that families had emigrated and were fraudulently claiming benefits from overseas.
More than 17,000 of these families have been found to be legitimate claimants as of 31 December, while only 1,019 (4.3%) were claiming incorrectly. The number of legitimate claimants is expected to increase, with thousands of cases still unresolved. Parents received letters referencing past holidays, sometimes dating back three years, for which the Home Office had no record of return journeys.
Impact on Affected Families
The flawed scheme had severe consequences for many families. For instance, a woman had her child benefit suspended after not boarding a plane due to her child's epileptic seizure at the departure gate. Another woman was penalised when a wedding in Norway was cancelled, and she did not travel. In Northern Ireland, some individuals lost benefits after returning via Dublin airport, while others had payments frozen because the Home Office lacked records of their UK return—an issue neither department has fully explained.
Internal Contradictions and Government Response
Internal documents obtained by the Detail news site show that officials considered the data-sharing scheme a success, even as thousands of payments were wrongly suspended and most families were later deemed eligible. Despite issuing apologies, HMRC maintained that the data exchange with the Home Office was functioning as expected. An internal report from mid-November 2025 stated that the data share aspects remained consistent with agreements, predicting about 64% of cases would be ineligible for child benefit.
However, by the end of November, HMRC figures revealed at least 63% of cases were legitimate claims, rising to 71% by December's end. HMRC has not released updated figures since. The report also justified suspending benefits before fraud was proven, a policy HMRC has now abandoned.
Political and Oversight Reactions
Andrew Snowden, the Conservative party's assistant whip, who previously called for a public inquiry and shared his family's experience with the benefits system, welcomed the NAO investigation. He highlighted a troubling lack of transparency from the government regarding the policy's design, data reliance, and the erroneous suspension of payments. Snowden emphasised the need for accountability to prevent future mistakes and restore public confidence.
In a letter to the Treasury select committee, John-Paul Marks, HMRC's first permanent secretary and chief executive, mentioned meeting the NAO's comptroller and auditor general to discuss a revised approach. The new strategy focuses on supporting taxpayers challenged by HMRC, without referencing flaws in Home Office data. Marks outlined plans for a careful, controlled approach with strong organisational listening, an oversight group to monitor progress, and updates to the committee in summer, incorporating NAO findings.
Scope of the NAO Investigation
The NAO investigation will examine the strategy, governance, and implementation of the intervention, as well as how HMRC managed risks in deploying the data-driven system. This inquiry aims to uncover the root causes of the errors and ensure such mistakes are not repeated, addressing concerns over data accuracy and procedural integrity in government welfare schemes.
