529 college savings plans have become more prevalent than student loans among undergraduates, yet their educational impacts remain largely unexplored. This paper examines how wealth gains in 529 plans shape educational opportunities using variation in target-date fund designs within these plans. I find that 529 wealth gains substantially increase four-year college attendance, with the effect per $1,000 similar to that of targeted grant aid. These wealth gains also reduce student loan borrowing and boost private K-12 school enrollment. However, 529 wealth gains accrue disproportionately to upper-income households, exacerbating the four-year college attendance gaps across both socioeconomic and racial lines.
Selected for NBER Economics of Education Fall 2025, AEA 2022, EEA 2023, NFA 2021, SOLE 2024 Poster, FMA 2023, Trans-Atlantic Doctoral Conference 2021