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How to Prepare for Medicare Annual Enrollment Period

CJ Karrer

Writer · Reviewed by Richard Chan

Updated Jun 12, 2026

4 min read

Key Takeaways

Every fall, the Medicare Annual Enrollment Period (AEP) opens a crucial window — running from October 15th through December 7th — during which you can reshape your healthcare coverage for the entire year ahead. Any changes you make during this time take effect on January 1st.

Who can make changes during AEP?

Anyone already enrolled in Medicare Parts A and B is eligible to make changes during AEP. If you haven't yet reached Medicare eligibility, you'll need to wait for your Initial Enrollment Period (IEP). And if you're eligible but haven't enrolled yet, the General Election Period (GEP) is your next opportunity.

Here's a common misconception worth addressing: many people assume they don't need to do anything during AEP — that simply letting their current plan roll over is the safe, sensible choice. In reality, doing nothing is rarely neutral. Plans change their benefits, premiums, and drug formularies every year, and what worked perfectly last year may quietly cost you more this year. Staying put without reviewing your options could mean leaving real money — and real coverage improvements — on the table.

Why? Because during AEP, you can:

A Few Examples of Advantages You Could Unlock by Changing Medicare Plans

Still wondering whether a review is really worth your time? Consider the concrete differences a plan change can make:

What Information Should You Gather to Prepare for AEP?

Preparation is everything. The more organized you are heading into AEP, the more confident and informed your decisions will be. Start gathering this information now so you're not scrambling when enrollment opens.

Here is a checklist of information to gather:

The Easy, Organized and Comprehensive Way to Prepare for the AEP

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