An investigation into the Child Maintenance Service (CMS), a branch of the Department for Work and Pensions (DWP), has revealed widespread problems with overcharging estranged parents through alleged computer glitches and administrative failings. At least 24,400 cases of inflated child maintenance payments have been identified, resulting in more than £4.3 million being wrongly collected. The flaws have reportedly caused serious financial hardship to many parents, with some losing homes and at least two fathers dying by suicide.
Launched in 2012 to replace the Child Support Agency, the CMS manages payments ensuring that children receive financial support after parental separation. More than 800,000 parents currently have payments overseen by the agency, which calculates maintenance primarily using income records from HM Revenue & Customs. Parents typically pay between 12 and 19 percent of their income, depending on the number of children supported, until the child finishes full-time education or turns 20.
However, since 2022 there have been numerous cases where parents were wrongly assessed due to suspected IT failures and staff turnover. Internal audits found that errors occurred in up to a third of cases reviewed in the 2024/25 period, a growing problem compared to previous years. The CMS’s own leadership has acknowledged that its online portal has a reputation for malfunctioning. Between January 2025 and March 2026, roughly 12 percent of its 4,200 staff resigned, disrupting case continuity.
Affected parents report multiple conflicting demands for payment, sometimes receiving several letters in a single day with differing amounts owed—ranging from modest sums to thousands of pounds monthly. In some instances, the CMS seized funds directly from bank accounts or deducted money from wages, even when parents contested the charges. Appeals can be made to independent tribunals, but payments must continue during the process, leading to ongoing financial strain.
Cases highlighted include Jonathan O’Neill, who struggled with inflated arrears claims for four years and whose sister described his situation as "crippling." He ultimately died after expressing despair on social media about the CMS. Another parent, Simon Ward, a former Army Warrant Officer discharged on a low pension, was charged maintenance based on his previous higher salary, resulting in deductions that left him reliant on food banks. Several others similarly described distress, broken careers, and housing loss linked to erroneous charges.
Critics liken the situation to previous government IT scandals given the scale of alleged miscalculations and inadequate response by the CMS. Campaign groups and affected families have called for urgent reforms, highlighting the emotional and financial toll on both parents and their children. Lib Dem leader Sir Ed Davey has urged the government to act, emphasizing the need to protect families and deliver promised CMS improvements.
The DWP has responded by stating that enforcement measures only begin after voluntary payment arrangements fail and that parents have the right to appeal decisions through independent tribunals. The department denies significant IT issues affecting the service’s accuracy and describes staff turnover as normal for an organisation of its size.
As debates continue over the CMS’s handling of child maintenance, concerns remain about the agency’s ability to provide fair and reliable support while safeguarding families from undue hardship.