"One Big Beautiful Bill" Act (OB3): Key Health Care Provisions and Impacts in Massachusetts
In July 2025, Congress enacted H.R. 1, also known as the “One Big Beautiful Bill” Act (OB3), which is a major tax and domestic policy law that will ultimately impact health care coverage in Massachusetts through significant changes to federal law.
This chart pack provides an overview of the public coverage programs in Massachusetts that will be affected by OB3, explains the key provisions in the law that will change Medicaid and Marketplace eligibility and financing, and elevates what we know about how these provisions will impact the coverage landscape and the broader health care delivery system in Massachusetts.
The data presented in this chart pack are derived from previous Foundation publications, as well as other publicly available sources.