Medicare starts at age 65 for most people

You become may be able to access for Medicare the month you turn 65, regardless of whether you are still working. If your birthday falls on the first of the month, your coverage begins the month before. For any other birthday, coverage starts the first day of the month you turn 65.

You do not have to retire to sign up, and you do not have to wait until you stop working. Many people continue their jobs while using Medicare alongside employer coverage. The key is understanding when you must enroll and what happens if you miss the important date.

Some people become may be able to access before 65 due to disability or end-stage renal disease, but age 65 is the standard entry point for most seniors.

Key Takeaways

  • Medicare may be able to access begins the month you turn 65, and you should enroll during your Initial Enrollment Period, which runs from three months before your birthday through three months after.
  • If you miss your Initial Enrollment Period, you may face permanent late-enrollment penalties on your monthly premiums unless you had may have access to employer coverage.
  • You can enroll online through Medicare.gov, by phone at 1-800-MEDICARE, or in person at your local Social Security office.
  • If you are still working and have health insurance through your employer, you may be able to delay Part B enrollment without penalty, but you must notify Medicare of your situation.

Your Initial Enrollment Period: The three-month window before and after 65

Your Initial Enrollment Period is a seven-month window: three months before you turn 65, the month you turn 65, and three months after. During this time, you can enroll in Medicare Part A (hospital insurance) and Part B (medical insurance) without waiting periods or penalties.

If you enroll during the first three months of this window (before your birthday month), your coverage will start the month you turn 65. If you enroll in your birthday month or the three months after, your coverage will start on the first day of the following month. This timing matters if you need coverage to begin right away.

Missing this window does not mean you lose Medicare forever, but it can cost you. Penalties for late enrollment are permanent and explore to your monthly premiums for as long as you have Medicare.

What happens if you miss your enrollment important date

If you do not enroll during your Initial Enrollment Period, you can still sign up later during the General Enrollment Period, which runs from January 1 through March 31 each year. Coverage would begin July 1 of that year. However, you will owe a late-enrollment penalty.

For Part A, the penalty is 10 percent of your monthly premium for twice the number of years you were may be able to access but not enrolled. For Part B, the penalty is 10 percent of the standard premium for each full year you delayed. These penalties stay with you permanently — they do not go away after a few years.

The only way to avoid these penalties is to have had may have access to health coverage through an employer or union while you were working. If you were covered by a current employer's plan (either your own job or a spouse's), you may have a Special Enrollment Period that lets you sign up without penalty up to eight months after that coverage ends.

Enrolling before 65 if you receive disability benefits

If you receive Social Security Disability Insurance (SSDI) or Railroad Retirement Board disability benefits, you become may be able to access for Medicare automatically after you have been receiving those benefits for 24 months. You do not have to wait until 65.

Medicare will contact you about three months before your may be able to access date. You do not need to do anything — your coverage begins automatically. However, you can contact Medicare if you want to decline Part B coverage, though this is rare and usually not recommended.

If you have end-stage renal disease (ESRD) requiring dialysis or a kidney transplant, you may also become may be able to access before 65. Your dialysis center or transplant team can tell you when you become may be able to access and help you understand your enrollment options.

How to enroll in Medicare

You have three main ways to enroll. The easiest is online at Medicare.gov, where you can create an account and complete your enrollment in about 15 minutes. You will need your Social Security number and information about any current health coverage.

You can also call 1-800-MEDICARE (1-800-633-4227) to enroll by phone. Representatives are available seven days a week, and they can answer questions about your specific situation. If you are deaf or hard of hearing, you can use the TTY number 1-877-486-2048.

A third option is to visit your local Social Security office in person. Bring your Social Security card, proof of citizenship or legal residency, and proof of age. You can find your nearest office at ssa.gov or by calling 1-800-772-1213.

Staying covered if you are still working at 65

Working past 65 does not disqualify you from Medicare. You can enroll and keep your employer health insurance at the same time. Medicare becomes your secondary payer, meaning your employer plan pays first for covered services, and Medicare covers what remains.

However, if your employer has 20 or more employees, your employer plan is primary and Medicare is secondary. If your employer has fewer than 20 employees, Medicare is primary. Understanding this matters for your out-of-pocket costs and which plan to use for specific services.

If you have health insurance through a current employer and want to delay Part B enrollment without penalty, you must tell Medicare that you have this coverage. You do this by checking a box when you enroll in Part A, or by calling Medicare to update your information. Without this notification, you will still face late-enrollment penalties if you delay Part B.

Special situations: Delaying enrollment without penalty

If you are still working and covered by your employer's health plan, you can delay Part B enrollment without penalty. This is called the Special Enrollment Period for working beneficiaries. You have eight months from the date your employment ends or your employer coverage ends (whichever comes first) to enroll in Part B without penalty.

You must have notified Medicare that you were delaying due to current employer coverage. If you did not make this notification when you first turned 65, you cannot use this exception later. The notification must happen during your Initial Enrollment Period or when you enroll in Part A.

If you are a federal employee, your coverage rules may differ slightly. Contact your federal employee health benefits (FEHB) plan directly to understand how Medicare coordinates with your plan.

Frequently Asked Questions

Can I enroll in Medicare before I turn 65?

You can enroll up to three months before your 65th birthday during your Initial Enrollment Period. You cannot enroll earlier unless you receive disability benefits or have end-stage renal disease. If you receive SSDI, you become may be able to access for Medicare after 24 months of receiving benefits, regardless of your age.

What if my birthday is on the first of the month?

If your birthday is the first day of any month, Medicare considers you to have turned 65 the month before. Your Initial Enrollment Period begins three months before that earlier month, and your coverage can start the month before your actual birthday if you enroll early enough.

Do I have to enroll in Part B if I am still working?

You do not have to enroll in Part B if you have current employer coverage, but you must notify Medicare of this fact during your Initial Enrollment Period. If you do not notify them and delay Part B, you will owe late-enrollment penalties when you eventually sign up, even if you had good reason to delay.

What is the penalty for enrolling late?

For Part B, the penalty is 10 percent of the standard monthly premium for each full year you delayed enrollment. This penalty is permanent and stays on your bill for life. For Part A, the penalty is 10 percent of the monthly premium for twice the number of years you were may be able to access but not enrolled.

Can I change my mind after I enroll?

Yes, but only during specific times. You have a limited time to disenroll from Part B if you change your mind shortly after enrolling. After that, you can only make changes during the Annual Enrollment Period (October 15 through December 7 each year) or if you have a may have access to life event like losing employer coverage.