Gaps in average college success among students of differing backgrounds have persisted in the United States for decades. One of the primary ways that federal and state governments have attempted to ameliorate such gaps is by providing need-based financial aid to low-income students. In this paper, we examine the impact of eligibility for the Florida Student Access Grant (FSAG) on a range of college outcomes. Exploiting the cutoff in the index used to measure a family's ability to pay for college and determine grant eligibility, we utilize a regression-discontinuity (RD) strategy to estimate the causal effect of being eligible for the grant. We investigate whether being eligible for a need-based grant increases the probability that students enter college, remain continuously enrolled, accumulate more college credits, and ultimately earn a degree. Similar to other studies, we find that grant eligibility had a positive effect on attendance. Moreover, grant aid increased short-term persistence and the cumulative number of credits students earned over time. Most importantly, we find that FSAG increased the likelihood of bachelor's degree receipt within six years at a public college or university by 22 percent among students near the eligibility cut-off. The effects are largest for academically highachieving students.