Using the public-use files of the Canadian Community Health Survey and a difference-in-differences methodology, we estimate the impact of a universal income transfer (the Universal Child Care Benefit) on food insecurity, separately for adults and children within households. The income transfer reduced the risk of overall food insecurity by 20% at the child level, and the effect was larger in households with lower education or income. The transfer also reduced the likelihood of moderate/severe food insecurity among adults in single-parent families, as well as adults and children in households with secondary education or less. These findings withstand several robustness checks.