Objectives. To examine the impact of Rx Kids-a community-wide and unconditional prenatal and infant cash transfer program in Flint, Michigan-on economic stability, maternal mental health, and well-being. Methods. Using a difference-in-differences framework, we compared outcomes for surveyed Flint mothers who gave birth before and after Rx Kids implementation to those outside the city. Results. Relative to comparisons, mothers exposed to Rx Kids saw improvements in hardship,