Adverse childhood experiences (ACEs) are stressful experiences during childhood such as child maltreatment and exposure to household difficulties including domestic violence, substance abuse, mental illness and family members being in prison. This study analysed data collected from 1,880 adult residents across Wales. It found that those who reported multiple ACEs in their childhood were significantly more likely to perceive they would be unable to cope financially during the cost-of-living crisis, independent of factors including household income level, employment status and residential deprivation.