This paper studies the effect of women’s higher education on fertility outcomes in Ethiopia. We exploit an abrupt increase in the supply of tertiary education induced by a deregulation policy. Using an age discontinuity in the exposure to higher education reform, we find that education lowers fertility by 8% and increases the likelihood of never giving birth by 25%. We explore the role of potential underlying mechanisms and find that this negative effect on fertility is channeled through positive assortative mating and the postponement of marriage and motherhood.