Is it mandatory to sign up for Medicare at age 65?

Question

Grant Hamilton · Accepted Answer

It's not mandatory to sign up for Medicare at 65, but a person will need to plan carefully in order to not miss any deadlines to register.  If you happen to miss registration you run a risk of lifelong late penalties and gaps in health coverage unless you qualify for an exception, such as having active health insurance through a job.

You can delay signing up for Medicare Part B without facing penalities in the following situations:   You are still working, the employer as 20 or more employees, you are covered by group health insurance through your employer or through your spouse's employer.  If your employer has under 20 workers, you do not want to delay your enrollment in Medicare.  Medicare will become your primary coverage.

Penalties will apply in the following scenarios:  The Part B premium will go up by 10% for every 12 month period of delayed enrollment without other qualifying coverage.  Part D (Prescription Drug Coverage) will go up by 1% of the national base beneficiary premium for every month you go without Medicare or other creditable drug coverage.  (Creditable is defined as coverae as good as a standard Medicare coverage).  Part B and Part D penalties are permanent penalties.

There is also a penalty for Part A if you have to pay a premium.  Your Part A premium will go up by 10% and you pay the penalty for twice the number of years your Part A enroillment is delayed.  Keep in mind that according to Medicare.gov, a Part A penalty applies to 1% of Medicare beneficiaries.  As a reminder, there are people who did not have enough working hours between them or a spouse to quaify for a free premium on Part A.

Brian Maiz · Answer

No, Medicare isn’t automatically mandatory just because you turn 65. Whether you should enroll at 65 depends largely on what health coverage you have at the time.

If you’re not covered through your or your spouse’s current employment, you’ll generally want to enroll when you first become eligible. Delaying Medicare without qualifying coverage can lead to gaps in coverage and potentially lifelong late enrollment penalties.

If you’re still working at 65 and covered by an employer health plan, you may be able to delay Part B without a penalty. However, the size of the employer and the type of coverage matter, so don’t assume that simply having insurance means you can safely delay Medicare.

This is one of those situations where checking your specific coverage before turning 65 can prevent an expensive mistake.

Marcia West · Answer

No. As long as you have credible coverage that is at least as good as Medicare, you can keep that coverage without being charged a penalty when you enroll in Medicare. Keep in mind, you have 63 days from the date your previous coverage ends to enroll in Medicare without a late enrollment penalty.

Answered by Marcia West on August 18, 2026

Agent Licensed in WA, FL, GA, MI, TX & VA

Answered by Marcia West Medicare Insurance Agent

Edward Fisher · Answer

No, but it's almost always a good idea if you don't already have acceptable (by Medicare standards) coverage. 

The most frequent situation is someone still working and covered by an employer's group plan.

Alex Adams · Answer

Not at all - there are many scenarios where it is acceptable, and even advised not to sign up for Medicare when your turn 65. Just as it is important for some folks to enroll when turning 65, is can be equally important for others not too, as many mistakes here on either scenario can result in costly penalties.

Ultimately the most important thing I've learned over the years is everyone situation is different and we have to ask a lot of questions, and the right questions before we can say one way or another what is best for you.  

-Alex

Voss Speros · Answer

This answer is provided in a video format. Watch the agent's video response here: https://medicareagentshub.com/questions/is-it-mandatory-to-sign-up-for-medicare-at-age-65#voss-speros

Pamela Fugitt-Hetrick · Answer

This answer is provided in a video format. Watch the agent's video response here: https://medicareagentshub.com/questions/is-it-mandatory-to-sign-up-for-medicare-at-age-65#pamela-hetrick

Tamekia Mckinnie · Answer

This answer is provided in a video format. Watch the agent's video response here: https://medicareagentshub.com/questions/is-it-mandatory-to-sign-up-for-medicare-at-age-65#tamekia-mckinnie