Large print · Easy to read · Print this page

Your Turning 65 Timeline

Turning 65 comes with real deadlines. This page walks you through them month by month, in plain language and large print. Print it out and stick it on the fridge.

The key fact: your Medicare enrollment window is 7 months long. It starts 3 months before the month you turn 65 and ends 3 months after.

The timeline

1. Step 1 · 6 months before you turn 65

   Start learning

   What to do: Take stock of the health coverage you have now. If you are still working, ask your HR department how your employer plan works with Medicare. Start reading about your two main paths: Original Medicare plus a supplement, or a Medicare Advantage plan.

   Why it matters: Medicare has real deadlines, and the choices are easier when you are not rushed. Six months out gives you time to ask questions and compare without pressure.

2. Step 2 · 3 months before you turn 65

   Your enrollment window opens

   What to do: This is the start of your Initial Enrollment Period. It is a 7-month window: the 3 months before your birthday month, your birthday month, and the 3 months after. Enroll in Medicare Parts A and B now if you want coverage to start on time. Compare your plan options and pick what fits your doctors and prescriptions.

   Why it matters: Enrolling in these 3 months means your coverage can start on the 1st of the month you turn 65. No gaps, no scrambling.

3. Step 3 · The month you turn 65

   Coverage can begin

   What to do: If you enrolled in the 3 months before your birthday month, your Medicare coverage starts on the 1st of this month. Make sure your doctors have your new Medicare information. If you chose a Medicare Advantage or Part D drug plan, confirm it is active.

   Why it matters: Starting coverage on time means no gap between your old coverage and Medicare. Call each doctor's office once to confirm they have your new card on file.

4. Step 4 · 3 months after you turn 65

   Your enrollment window closes

   What to do: Your Initial Enrollment Period ends at the close of the 3rd month after your birthday month. If you have not enrolled in Part B by now and you do not have qualifying employer coverage, you may face a late enrollment penalty and have to wait for the General Enrollment Period (January through March each year).

   Why it matters: Missing this window is the most expensive mistake in Medicare. The Part B penalty adds 10% to your premium for every full 12-month period you delayed, and it lasts as long as you have Part B.

Common questions about turning 65

When exactly does my Medicare enrollment window open?

Your Initial Enrollment Period is 7 months long. It starts 3 months before the month you turn 65, includes your birthday month, and ends 3 months after. For example, if you turn 65 in June, your window runs from March 1 through September 30.

When will my Medicare coverage start?

It depends on when you enroll. If you sign up in the 3 months before your birthday month, coverage starts on the 1st of your birthday month. If you enroll during your birthday month or the 3 months after, your start date is later. Enrolling early is the way to avoid a gap.

What happens if I miss my enrollment window?

You will generally have to wait for the General Enrollment Period, which runs January through March each year, and your coverage would not start until July. You may also owe a Part B late enrollment penalty of 10% for each full 12-month period you delayed. The exception is if you had qualifying employer coverage, which gives you a Special Enrollment Period.

Can I delay Medicare if I am still working at 65?

Often, yes. If you or your spouse has group health coverage through current employment at an employer with 20 or more employees, you can usually delay Part B without penalty and enroll later when that coverage ends. Get this confirmed by your HR department before you decide, and keep the confirmation.

Do I need to do anything about my HSA when I turn 65?

Yes. Once your Medicare coverage begins, including Part A, you must stop contributing to your Health Savings Account. You can still use the money already in the account for qualified medical expenses. If you apply for Social Security after 65, Part A can backdate up to 6 months, so plan your last HSA contribution with that in mind.