The purpose of this review is to summarize recent research on topics related to child care subsidies. It is intended to provide a foundation of empirical knowledge for state administrators, program developers, and policymakers as they choose among and implement subsidy policies. This review reflects current and seminal work completed by researchers in the U.S. and includes published journal articles, dissertations, and reports from studies funded by the Office of Planning, Research, and Evaluation and other government agencies. The structure and content were selected to reflect topics of interest to child care subsidy state administrators.