NAO Launches Inquiry into HMRC Child Benefit Scheme That Wrongly Suspended Thousands
The UK's public spending watchdog, the National Audit Office (NAO), has initiated a formal investigation into a controversial anti-fraud scheme operated by HM Revenue and Customs (HMRC). This scheme erroneously suspended child benefit payments for thousands of families, relying on flawed travel records from the Home Office.
Flawed Data Leads to Widespread Errors
HMRC designed and implemented a data-driven system that utilized Home Office travel records to identify parents suspected of living abroad while claiming child benefit. However, these records were deeply flawed, often recording outgoing journeys—such as airline bookings that were never used—while failing to log return trips by holidaymakers and business travelers. HMRC accepted this data in good faith, leading to incorrect assumptions that families had emigrated and were fraudulently claiming benefits from overseas.
Among the affected cases were a woman whose child suffered an epileptic seizure at the departure gate, causing her to not board the plane, and another woman who canceled a trip to Norway after a wedding was called off. In Northern Ireland, some individuals had benefits stripped after returning via Dublin airport, while others faced frozen payments simply because the Home Office had no record of their UK return—an issue that remains unexplained by both departments.
Scale of the Suspensions and Legitimate Claims
Between July and October of last year, HMRC suspended payments for 23,794 families as part of this anti-fraud crackdown. Parents received letters referencing past holidays, sometimes dating back three years, for which the Home Office lacked return journey records. As of December 31, more than 17,000 of these families have been found to be legitimate claimants, with only 1,019 (4.3%) incorrectly claiming. The number of legitimate claimants is expected to rise further, as thousands of cases remain unresolved.
Political and Internal Responses
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 criticized the government's lack of transparency, stating that Parliament has relied on written questions and piecemeal disclosures to grasp the problem's scale. Snowden emphasized the need for accountability to prevent future mistakes.
Internal documents obtained by the Detail news site reveal that officials considered the data-sharing scheme a success, even as thousands of payments were wrongly suspended. Despite issuing apologies, HMRC maintained that the data exchange with the Home Office was functioning as expected. An internal report from mid-November 2025 claimed that about 64% of cases would be found ineligible for child benefit. However, by the end of November, HMRC figures showed at least 63% were legitimate claims, rising to 71% by December's end, with no updated figures released since.
Revised Approach and Future Steps
In a letter to the Treasury select committee, John-Paul Marks, HMRC's first permanent secretary and chief executive, outlined a revised approach following discussions with the NAO. The focus has shifted to supporting taxpayers challenged by HMRC, without explicit reference to the flawed Home Office data. Marks emphasized a careful, controlled approach with strong organizational listening to quickly address issues. An oversight group will monitor progress using international travel data and iterate processes as needed, with updates planned for summer based on the NAO review findings.
The NAO investigation will scrutinize 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 restore public confidence and ensure such errors do not recur.
