This report presents actionable, emerging insights shared by and learned from state coalitions and subject matter experts who participated in the Earned Income Tax Credit (EITC) Policy Implementation Lab (EITC Policy Lab) from December 2020 through May 2021. Many of these insights are broadly relevant to a variety of actors working toward systemic strategies to advance health and well-being. The primary audiences are public health practitioners and their allies in other sectors working to address health disparities exacerbated by income insecurity. This includes those seeking to increase uptake of EITC or other tax credits to help build economic stability for low- and moderate-income individuals and families.