The standard age for Medicare is 65

You can enroll in Medicare at age 65, regardless of your work history or income. This is the age when most people become may be able to access for Part A (hospital insurance) and Part B (medical insurance). You do not have to wait until you retire—you can sign up for Medicare while still working.

The enrollment window opens three months before the month you turn 65 and closes three months after. If you miss this window, you may face a permanent penalty on your Part B premiums, so timing matters. The Social Security Administration handles enrollment for most people automatically, but you should verify your information is correct.

Key Takeaways

  • You become may be able to access for Medicare at age 65, and you have a seven-month window to enroll without penalty.
  • If you are still working and have health coverage through your employer, you may be able to delay Part B enrollment without penalty.
  • Some people under 65 can receive Medicare if they have been on Social Security Disability Insurance (SSDI) for 24 months or have end-stage renal disease or ALS.
  • You must actively enroll during your initial enrollment period or face higher premiums for the rest of your life.
  • Medicare enrollment happens through Social Security, Medicare.gov, or your local Social Security office—not through a private company.

Enrolling before 65 if you have a disability

You may be able to receive Medicare before age 65 if you have been receiving Social Security Disability Insurance (SSDI) for at least 24 months. Once you hit that 24-month mark, Medicare Part A and Part B coverage begins automatically. You do not need to do anything—Social Security will enroll you.

Two other conditions allow Medicare before 65: if you have end-stage renal disease (permanent kidney failure requiring dialysis or transplant) or if you have been diagnosed with ALS (amyotrophic lateral sclerosis, also called Lou Gehrig's disease). People with ALS become may be able to access when ready upon diagnosis, without waiting. Those with end-stage renal disease can enroll in the month their condition is diagnosed.

What happens if you are still working at 65

You can delay enrolling in Part B if you are still working and covered by your employer's health plan. This is called creditable coverage. As long as your employer has 20 or more employees, you can wait to enroll in Part B without paying a penalty, even after you turn 65.

However, you should still enroll in Part A at 65, since it is usually free and covers hospital stays. Part B is where the penalty applies if you delay. Once you leave your job or lose employer coverage, you have eight months to enroll in Part B without penalty. If you miss that window, your Part B premium increases by 10 percent for each year you were may be able to access but did not enroll.

How to enroll in Medicare

Most people are enrolled automatically by Social Security three months before they turn 65. You will receive a Medicare card in the mail. If you do not receive one, or if you need to make changes, you can enroll yourself through Medicare.gov, by calling Social Security at 1-800-772-1213, or by visiting your local Social Security office in person.

The enrollment window is seven months long: it starts three months before the month you turn 65 and ends three months after. For example, if you turn 65 in June, your window runs from March through September. Enrolling early in this window gives you time to receive your card and understand your coverage before it starts on the first day of the month you turn 65.

Understanding Part A and Part B coverage

Part A covers hospital stays, skilled nursing facility care, hospice, and some home health services. It is usually free if you or your spouse paid Medicare taxes for at least 10 years. Part B covers doctor visits, outpatient care, and medical equipment. Part B has a monthly premium, which changes each year based on your income.

Part A and Part B together are called Original Medicare. They do not cover dental, vision, hearing aids, or long-term care. Many people add Part D (prescription drug coverage) and either Medigap (supplemental insurance) or Part C (Medicare Advantage, an all-in-one alternative plan). You can enroll in Part D and Medigap during the same seven-month window as Part B, or during the annual enrollment period from October 15 to December 7.

Penalties for late enrollment

If you do not enroll in Part B during your initial seven-month window and you do not have creditable coverage from an employer, you will pay a permanent 10 percent premium increase for each full year you were may be able to access but did not enroll. This penalty stays with you for life, even if you enroll later.

Part D (prescription drug coverage) has a similar penalty: if you go 63 days or more without creditable drug coverage, your premium increases by 1 percent for each month you were without it. These penalties are calculated by Medicare and added to your monthly bill. There is no way to remove them once they are applied, so enrolling on time matters.

Special enrollment periods if you miss the important date

If you miss your initial enrollment window, you may still have a chance to enroll without penalty during a Special Enrollment Period (SEP). This applies if you lose employer coverage, move out of your plan's service area, or experience other may have access to life events. You must enroll within two months of the event that triggered the SEP.

To learn about you may have access to for a SEP, contact Medicare at 1-800-MEDICARE (1-800-633-4227) or visit Medicare.gov. Social Security cannot determine SEP may be able to access—you must reach out to Medicare directly. Even if you think you might may have access to, it is safer to enroll during your initial window to avoid any risk of penalty.

Frequently Asked Questions

Can I enroll in Medicare before I turn 65?

Yes, if you have been on SSDI for 24 months, have end-stage renal disease, or have ALS. Otherwise, you must wait until age 65. You can contact Social Security to confirm your may be able to access if you have a disability.

What if I am still working and do not want Medicare yet?

If your employer has 20 or more employees and covers you, you can delay Part B without penalty. You should still enroll in Part A at 65 since it is usually free. Once you leave your job, you have eight months to enroll in Part B penalty-free.

Do I have to enroll in Medicare at 65 if I have private insurance?

If your private insurance is from your employer and they have 20 or more employees, you can delay Part B. If your insurance is from the marketplace or another source, you should enroll in Medicare at 65 to avoid penalties. Contact Medicare to discuss your specific situation.

What happens if I miss my enrollment window?

You will pay a permanent 10 percent increase on your Part B premium for each year you were may be able to access but did not enroll. You may still be able to enroll during a Special Enrollment Period if you experienced a may have access to life event like losing employer coverage.

How do I know if my employer coverage counts as creditable?

Creditable coverage means your employer has 20 or more employees and offers health insurance. Your employer's benefits office or HR department can confirm this. If you are unsure, ask them directly before you turn 65.