You become may be able to access for Medicare at age 65, regardless of your income or health history

Medicare may be able to access begins the month you turn 65. You do not have to wait until your birthday month ends — if you turn 65 on any day of the month, your coverage can start on the first day of that month. The only exception is if you are still working and covered by an employer health plan; in that case, you can delay enrollment without penalty, but you must enroll within eight months of leaving that job or losing that coverage.

Some people become may be able to access before 65. If you have received Social Security Disability Insurance (SSDI) for 24 months, you become may be able to access at any age. If you have end-stage renal disease (ESRD) or amyotrophic lateral sclerosis (ALS), you may be may be able to access when ready upon diagnosis, regardless of age.

Key Takeaways

  • Standard Medicare may be able to access begins at age 65 for anyone who has worked and paid Medicare taxes for at least 10 years, or is a spouse or dependent of someone who has.
  • You can enroll in Medicare starting three months before the month you turn 65, and you have until three months after that month to sign up without a late penalty.
  • If you are still working at 65 and covered by your employer's health plan, you can delay Medicare enrollment, but you must sign up within eight months of retiring or losing that coverage.
  • People under 65 who receive SSDI for 24 months, or who have ESRD or ALS, may be may be able to access for Medicare before reaching 65.
  • Missing your enrollment window can result in a permanent increase to your monthly premiums, so timing your signup matters.

The standard enrollment window: three months before and after your 65th birthday

Medicare has a specific enrollment period tied to your birth month. You can enroll starting three months before the month you turn 65 and must complete enrollment by three months after that month. This seven-month window is called your Initial Enrollment Period (IEP).

For example, if you turn 65 in June, you can enroll starting in March and must finish by September. Enrolling early does not start your coverage early — it straightforward gives you time to complete the paperwork. Your coverage will begin on the first day of the month you turn 65, regardless of when during the window you enroll.

If you miss this window, you can still enroll during the General Enrollment Period, which runs January 1 through March 31 each year. However, coverage does not begin until July 1 of that year, and you will pay a permanent 10 percent increase to your Part B premium for each year you delayed enrollment.

Work coverage and the eight-month grace period

If you are still working at 65 and your employer offers health insurance, you do not have to enroll in Medicare at 65. You can stay on your employer plan and delay Medicare without penalty. However, this grace period has a time limit: you must enroll in Medicare within eight months of the date you stop working or lose your employer coverage.

This eight-month window is separate from your Initial Enrollment Period. It protects people who would otherwise face a penalty for missing their birthday-based enrollment window. To use this grace period, you will need to show proof that you had employer coverage when you turned 65 — usually a letter from your employer or a copy of your health plan documents.

If you are unsure whether your employer plan qualifies, contact your employer's benefits office or call Medicare at 1-800-MEDICARE to ask. It is better to check before your eight months run out.

Early may be able to access: SSDI, ESRD, and ALS

You do not have to wait until 65 if you meet one of three conditions. If you have been receiving SSDI for 24 consecutive months, you become may be able to access for Medicare automatically. You do not need to explore separately — Social Security will enroll you once the 24-month period ends.

If you have end-stage renal disease (ESRD), you may be may be able to access for Medicare when ready upon diagnosis, even if you are in your 20s or 30s. Similarly, if you are diagnosed with amyotrophic lateral sclerosis (ALS), you become may be able to access right away. In both cases, you will need to contact Social Security or Medicare to complete the enrollment process, as it does not happen automatically.

For ESRD, your may be able to access begins the month after you start dialysis or the month of a kidney transplant. For ALS, may be able to access begins the month you are approved for SSDI, which typically happens quickly for this diagnosis.

What you need to know about work history and coverage

To be may be able to access for Medicare at 65, you or your spouse must have worked and paid Medicare taxes for at least 10 years (40 quarters). If you have not worked that long, you may still be able to enroll, but you will pay a higher premium for Part A (hospital insurance) because you did not pay the full amount into the system during your working years.

If you are a non-citizen, you must have been a lawful permanent resident for at least five years to be may be able to access. Refugees and asylees have different rules and may be may be able to access sooner.

If you are divorced, you may be able to use your ex-spouse's work record if you were married for at least 10 years and are at least 65 years old. You do not need your ex-spouse's permission, and they do not need to know you are using their record.

Enrollment methods and where to start

You can enroll in Medicare three ways: online through Medicare.gov, by phone at 1-800-MEDICARE, or in person at your local Social Security office. If you are already receiving Social Security benefits, you will be contacted automatically about three months before you turn 65, and you can enroll through that notice.

When you enroll, you will choose between Original Medicare (Part A and Part B) or a Medicare Advantage plan (Part C). You will also decide whether to add prescription drug coverage (Part D) and supplemental coverage. These choices do not have to be made all at once, but making them during your Initial Enrollment Period avoids late-enrollment penalties.

If you are still working and delaying enrollment, you do not need to do anything until you retire or lose your employer coverage. At that point, contact Medicare within two months to start the eight-month grace period clock.

Late enrollment penalties and how to avoid them

If you do not enroll during your Initial Enrollment Period and do not have an exception (like active employer coverage), you will pay a permanent penalty. For Part B, the penalty is 10 percent of the standard premium for each year you delayed. For Part D (prescription drug coverage), the penalty is 1 percent of the national average premium for each month you delayed.

These penalties stay with you for life — they do not go away after a few years. The only way to avoid them is to enroll during your Initial Enrollment Period, use the eight-month employer coverage grace period, or meet one of the other exceptions Medicare recognizes.

If you believe you have a valid reason for missing your enrollment window — such as a serious illness or a mistake by Social Security — you can request a special enrollment period. Contact Medicare to explain your situation.

Frequently Asked Questions

Can I enroll in Medicare before I turn 65?

Yes. You can start the enrollment process three months before the month you turn 65. Your coverage will not begin until the first of the month you turn 65, but enrolling early gives you time to complete the paperwork and ask questions.

What happens if I miss my enrollment important date?

You can still enroll during the General Enrollment Period (January 1 through March 31), but your coverage will not start until July 1, and you will pay a permanent 10 percent increase to your Part B premium for each year you delayed. Part D has a separate 1 percent monthly penalty.

Do I have to enroll at 65 if I am still working?

No. If your employer offers health insurance, you can stay on that plan and delay Medicare. You have eight months after you stop working or lose that coverage to enroll without penalty. Make sure to enroll within that window.

Can I get Medicare before 65?

Yes, if you have received SSDI for 24 months, have end-stage renal disease, or have been diagnosed with ALS. Contact Social Security or Medicare to enroll. For ESRD and ALS, may be able to access can begin when ready upon diagnosis.

What if I am not a U.S. citizen?

You must be a lawful permanent resident for at least five years to be may be able to access. Refugees and asylees have different rules. Contact Medicare to find out whether you meet the requirements for your immigration status.