Initial Enrollment Period
Open nowJune 2026 to December 2026
Enroll in Part A, Part B, Part D, or a Medicare Advantage plan. Enroll by August 2026 and coverage starts September 2026 1.
Medigap Open Enrollment
Open nowSeptember 2026 to February 2027
Six months from your Part B start. Any Medicare Supplement must accept you at standard rates, no health questions.
Annual Enrollment Period
Every fallOctober 15 to December 7, 2026
Change Advantage or Part D plans for the coming year. Every year, for everyone on Medicare.
Medicare Advantage Open Enrollment
Every winterJanuary 1 to March 31, 2027
Only if you are already in an Advantage plan: one switch to another Advantage plan, or back to Original Medicare plus Part D.
General Enrollment Period
Every winterJanuary 1 to March 31, 2027
If you missed your Initial Enrollment Period and have no Special Enrollment Period. Coverage starts the month after you enroll. Penalties may apply.
Special Enrollment Periods are not on this list.
Leaving employer coverage after 65, moving, or a plan leaving your area each open a window of its own. Tell us what happened and we will find it.
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