Your Initial Enrollment Period (IEP)
Understand the 7-month window when you’re first eligible for Medicare and what happens if you miss it.
The Initial Enrollment Period is your first opportunity to enroll in Medicare. It begins three months before the month of your 65th birthday, includes your birth month, and continues for three months afterward—making it a total of seven months. Enrolling during this time helps ensure that your coverage begins without delay or penalty. If you miss this window, you may face late enrollment fees and gaps in coverage unless you qualify for a Special Enrollment Period.
Annual Enrollment Period (AEP): October 15 – December 7
Learn how and when to switch or update your Medicare plans during the yearly open enrollment period.
The Annual Enrollment Period happens every year from October 15 to December 7. During this time, you can switch from Original Medicare to Medicare Advantage, change from one Medicare Advantage plan to another, or join, drop, or change a Part D prescription drug plan. Changes you make during AEP generally take effect on January 1 of the following year. It’s an important time to review your coverage and make updates based on changes in your health, finances, or plan offerings.
General Enrollment Period (GEP): For Late Sign-Ups
Find out what to do if you missed your initial window and how to enroll between January 1 and March 31.
If you didn’t sign up for Medicare during your Initial Enrollment Period and don’t qualify for a Special Enrollment Period, the General Enrollment Period is your next opportunity. It runs from January 1 through March 31 each year, and coverage generally starts the month after you enroll. This period is especially important for people who missed an earlier deadline and want to avoid further delays in securing necessary healthcare coverage.
Special Enrollment Periods (SEP): Life Events That Qualify
Discover which events—like moving or losing employer coverage—may qualify you for a special enrollment window.
Certain life events may make you eligible for a Special Enrollment Period, allowing you to enroll in or change Medicare coverage outside the standard periods. Examples include losing employer or union coverage, moving to a new area that affects your plan’s coverage, or being released from incarceration. The timing of a Special Enrollment Period varies by qualifying event, so confirm your deadline as soon as your circumstances change.
Tips to Avoid Late Penalties and Coverage Gaps
Get helpful strategies for avoiding costly penalties and ensuring continuous coverage.
To avoid late enrollment penalties, sign up for Medicare as soon as you’re eligible—especially for Part B and Part D. Consider setting reminders for your enrollment periods, and consult with a licensed insurance agent if you’re unsure about your timing. Also, review your health and prescription needs annually to ensure your plan still meets your requirements. Proactive planning helps you avoid gaps in coverage and ensures you’re protected when you need it most.