On March 11, President Biden signed an approximately $1.9 trillion COVID-19 relief bill—the American Rescue Plan Act of 2021 (“the American Rescue Plan,” ARPA). The American Rescue Plan includes myriad health care provisions, focused primarily in two areas: first, it provides funding the Biden administration requested to carry out its COVID-19 response plans; second, it enacts significant but largely temporary coverage policies. Although all health care coverage provisions of the bill are temporary, many will have a lasting impact. This timeline provides the start and end dates for key health care provisions to help states plan for implementation and future policymaking. The provisions covered include: marketplace and commercial insurance, Medicaid and state and local funding.