In July 2025, President Trump signed the One Big Beautiful Bill Act (OB3) into law. This law includes several major changes to Medicaid across the country. MassHealth, Massachusetts’ combined Medicaid and Children’s Health Insurance Program (CHIP) program, is legally required to carry out these changes. It is estimated that hundreds of thousands of MA residents could lose their MassHealth coverage due to these changes.

The changes will not happen right away and will not affect all MassHealth members. The first federal change will impact some immigrant members beginning Fall 2026. Other important changes include more frequent renewals and work requirements.

Learn more about these changes on the MassHealth website. MassHealth is closely monitoring federal actions and providing updated information for members. Information includes, but is not limited to:

• The One Big Beautiful Bill (OB3) and how it will impact MassHealth members
• How members can prepare for these changes
• ConnectorCare Plan Type 1
• OB3 timeline
• How MassHealth is responding to OB3
• Reports of ICE Data Sharing