Nundina › Discover calendars › Health Insurance Open Enrollment calendar › 🏥 ACA Marketplace Deadline for January 1 Coverage🏥 ACA Marketplace Deadline for January 1 Coverage15 December 2026Last day to pick a healthcare.gov Marketplace plan for coverage that starts January 1, 2027. Enrolling after this date but before open enrollment closes on January 15 means coverage starts February 1 instead. Verified 2026-08 via healthinsurance.org.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 January 2027 - 🏥 ACA Marketplace Open Enrollment Ends (Federal Marketplace)

15 October 2027 - 💊 Medicare Annual Enrollment Period Begins

1 November 2027 - 🏥 ACA Marketplace Open Enrollment Begins