Non-marital childbearing is associated with many adverse outcomes for both the mother and the child. Most of these births are unintended. If these unintended births could be reduced it might improve children's prospects by enabling their mothers to get more education, earn more, and wait to have children within marriage. In this brief, the authors trace the effects of reducing unintended childbearing on children's success later in life by using the Social Genome Model (SGM) to simulate the effect on children's life chances of aligning women's fertility behavior with their intentions. Though the impacts of improving women's control over their fertility are small for the population as a whole, there are significant and important improvements in the lives of children who would have otherwise been "born too soon." These findings suggest that increasing access to and awareness of high-quality, easy-to-use contraception and improving the educational and labor market prospects of low-income women are important steps in improving children's life chances.