This paper examines the intergenerational effects of Social Security benefits on young people’s economic outcomes. I exploit quasi-experimental variation from the U.S. Social Security “Notch”—a policy that sharply reduced benefits for cohorts born after 1916—to identify the causal impact of retirement income received by older family members on their children’s and grandchildren’s outcomes. Using the Current Population Survey and the Panel Study of Income Dynamics, I link exposure to the Notch with educational attainment and earnings of subsequent generations. I find that larger retirement benefits increase young people’s schooling and earnings, with the strongest effects among lower-income families. These findings demonstrate that Social Security not only insures retirees against income loss but also generates positive intergenerational spillovers, enhancing economic mobility across generations.