Nundina › Discover calendars › Health Insurance Open Enrollment calendar › 🏥 ACA Marketplace Open Enrollment Begins🏥 ACA Marketplace Open Enrollment Begins1 November 2027Healthcare.gov federal Marketplace Open Enrollment Period for 2028 coverage begins. November 1 is the start date set by the standing federal regulation, unchanged by the vacated 2027 rule. Verified 2026-08.Health Insurance Open Enrollment calendarMore from this calendar

1 November 2026 - 🏥 ACA Marketplace Open Enrollment Begins

7 December 2026 - 💊 Medicare Annual Enrollment Period Ends

15 December 2026 - 🏥 ACA Marketplace Deadline for January 1 Coverage

15 January 2027 - 🏥 ACA Marketplace Open Enrollment Ends (Federal Marketplace)

15 October 2027 - 💊 Medicare Annual Enrollment Period Begins