2027 Medicare dates
Medicare Advantage 2027 Deadline Calculator
Choose what is happening to your plan, and get the dates that apply. The calculator uses federal Medicare dates for 2026–2027.
Use the dates as a checklist, not a guarantee. A plan can change its service area, premium, or drug list even when it renews. Confirm every detail with the plan, your SHIP, or Medicare.gov.
All 2027 Medicare Advantage dates
| Event | Date | What it means |
|---|---|---|
| Annual Election Period (AEP) | October 15 – December 7, 2026 | Join a 2027 Medicare Advantage or Part D plan. A plan chosen here starts January 1, 2027. |
| Non-renewal Special Enrollment Period | December 8, 2026 – February 28, 2027 | For people whose Medicare Advantage plan is leaving. You can switch to another MA plan or return to Original Medicare. |
| 2027 plan year begins | January 1, 2027 | If you do nothing, a non-renewed Medicare Advantage plan ends and you return to Original Medicare. |
| Medicare Advantage Open Enrollment Period | January 1 – March 31, 2027 | If you are already in a Medicare Advantage plan, you can make one change during this window. |
| Medigap guaranteed-issue window | November 1, 2026 – March 4, 2027 | If your MA plan is leaving, you can buy a Medigap policy without medical underwriting during this federal window. |
The non-renewal SEP applies when your Medicare Advantage plan is non-renewed or leaves your service area. The Medigap guaranteed-issue window applies if you return to Original Medicare and apply for a Medigap policy within the federal window.
Deadline calculator questions
Which dates are the same for everyone?
The Annual Election Period (October 15 – December 7, 2026), the 2027 plan year start (January 1, 2027), and the Medicare Advantage Open Enrollment Period (January 1 – March 31, 2027) apply nationwide. The non-renewal SEP (December 8, 2026 – February 28, 2027) applies to people whose plan is leaving.
Is the Medigap window the same in every state?
The federal guaranteed-issue window for a plan ending December 31, 2026 is November 1, 2026 through March 4, 2027. States can add rights or change rules. Confirm with your state insurance department or SHIP before you apply.
Does the calendar include state-specific deadlines?
No. The calculator uses federal Medicare dates. State Medigap rules, Medicaid, and SHIP appointment availability are not included.
Sources
- Monthly Enrollment by Contract/Plan/State/County (CPSC), October 2026 — Centers for Medicare & Medicaid Services.
- 2027 Part C&D Plan Crosswalk — Centers for Medicare & Medicaid Services.
- 2027 Star Ratings Data Tables — Centers for Medicare & Medicaid Services.
- MA Plan Directory — Centers for Medicare & Medicaid Services.
- Medicare Advantage in 2026: Enrollment Update and Key Trends — KFF.
- CNN: More than 3 million Medicare Advantage enrollees need to find new plans for 2027 — Better Medicare Alliance.
- Medicare Advantage insurer exits pile up for 2027 — Modern Healthcare.
- CMS Finalizes 2027 Medicare Advantage Rates: 1,471 Counties, 32 Carriers — SeniorWire.
Data version 2026-10-24; last updated October 24, 2026. This calculator is information only and is not insurance advice. Medicare Plan Exits is not affiliated with CMS, HHS, or Medicare.gov.