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. The program begins on the first day of that month. If you were born on any day in a given month, your coverage starts on the first of that month—you do not have to wait until your actual birthday.

You do not have to be retired to enroll. Even if you are working full-time and earning income, you can sign up for Medicare at 65. Some people delay enrollment if they have employer coverage through their job, but the enrollment window and age requirement remain the same.

There are exceptions to the age 65 rule. People under 65 with end-stage renal disease (permanent kidney failure requiring dialysis or transplant), amyotrophic lateral sclerosis (ALS), or who have received Social Security Disability Insurance (SSDI) for 24 months can enroll earlier. These situations are rare and have their own enrollment rules.

Key Takeaways

  • Medicare may be able to access begins the month you turn 65, on the first day of that month, not on your birthday itself.
  • You must enroll during your initial enrollment period, which runs three months before, the month of, and three months after the month you turn 65.
  • If you miss your initial enrollment period and do not have may have access to coverage, you will pay a permanent penalty on your premiums.
  • You can delay enrollment past 65 without penalty only if you have health coverage through an employer with 20 or more employees or through a spouse's employer plan.
  • People under 65 with SSDI, end-stage renal disease, or ALS have different age rules and should contact Social Security directly.

Your initial enrollment period: when you must sign up

Your initial enrollment period is a seven-month window centered on the month you turn 65. It runs from three months before your 65th birthday month through three months after. For example, if you turn 65 in June, your enrollment period is March through September.

You should enroll during this window even if you do not plan to use Medicare right away. Enrolling on time protects you from late penalties that can last for the rest of your life. The penalty applies to Part B (doctor and outpatient services) and Part D (prescription drugs) if you delay without may have access to coverage.

The easiest way to enroll is online at Medicare.gov, by phone at 1-800-MEDICARE, or in person at your local Social Security office. You will need your Social Security number and information about any current health coverage.

What happens if you miss the enrollment important date

If you do not enroll during your initial enrollment period and you do not have may have access to coverage, you will owe a late enrollment penalty for as long as you have Medicare. For Part B, the penalty is 10 percent of the standard premium for each full 12-month period you were may be able to access but not enrolled. For Part D, the penalty is 1 percent of the national average premium for each month you were late.

These penalties are permanent—they do not go away after a certain time. If you were supposed to enroll at 65 but did not enroll until age 68, you would owe three years of penalties on top of your regular premiums for the rest of your life.

There are limited exceptions. If you had creditable coverage—health insurance through an employer with 20 or more employees, a spouse's employer plan, TRICARE, the Veterans Administration, or certain other sources—you can enroll later without penalty. You must enroll within eight months of losing that coverage to avoid the penalty.

Delaying enrollment if you are still working

If you are still employed and covered by your employer's health plan, you may be able to delay Medicare enrollment without penalty. This works only if your employer has 20 or more employees. If it does, you can wait to enroll in Part B until you leave your job or lose the coverage, whichever comes first.

You must still enroll in Part A (hospital insurance) at 65 unless you are a non-citizen or have other specific circumstances. Part A has no premium for most people, so there is no financial reason to delay it.

Part D (prescription drug coverage) is different. If you delay Part D while on employer coverage, you must enroll within 63 days of losing that coverage or face a permanent penalty. Mark this important date on your calendar—it is shorter than the Part B window and straightforward to miss.

Special enrollment periods for life changes

If you miss your initial enrollment period but experience certain life changes, you may open a special enrollment period that lets you enroll without penalty. These changes include losing employer coverage, moving out of your plan's service area, getting married, or having a significant change in income.

You must enroll within two months of the event that triggered the special period. The rules vary depending on which part of Medicare you are enrolling in and what caused the change. Contact Medicare at 1-800-MEDICARE to report your situation and confirm whether you may have access to.

Do not assume a life change automatically opens a special period. Some events do not may have access to, and you must report the change yourself—Medicare does not monitor your circumstances.

Medicare Parts and what each covers at 65

When you turn 65, you become may be able to access for all four parts of Medicare. Part A covers hospital stays, skilled nursing care, hospice, and home health services. Part B covers doctor visits, outpatient services, and preventive care. Part D covers prescription drugs. Part C, also called Medicare Advantage, is an alternative to Parts A and B offered by private insurance companies.

Part A is automatic for most people at 65 if they or their spouse paid Medicare taxes for at least 10 years. You do not have to enroll in Part A—it starts whether you sign up or not. Part B, Part D, and Part C all require active enrollment during your initial enrollment period.

You do not have to take all parts at once. You can enroll in Part A and delay Part B if you have employer coverage. You can choose Part C instead of Parts A and B. The combination you choose affects your costs and which doctors and pharmacies you can use.

Turning 65 while on Social Security Disability

If you have been receiving Social Security Disability Insurance (SSDI) for 24 months, you become may be able to access for Medicare at that point, not at age 65. Your coverage begins the 25th month of your SSDI payments. You do not have to do anything—Medicare enrollment happens automatically.

When you turn 65, your SSDI payments convert to regular Social Security retirement benefits, but your Medicare coverage continues without interruption. There is no new enrollment period or action required on your part.

If you are unsure whether you have been on SSDI for 24 months, contact Social Security at 1-800-772-1213 to confirm your may be able to access date.

Frequently Asked Questions

Can I enroll in Medicare before I turn 65?

You can enroll starting three months before the month you turn 65. For example, if you turn 65 in June, you can enroll starting in March. You cannot enroll earlier than that unless you have end-stage renal disease, ALS, or have been on SSDI for 24 months.

What if I turn 65 but do not want Medicare yet?

You should still enroll during your initial enrollment period to avoid permanent penalties, even if you do not use the coverage right away. If you have employer coverage, you can enroll in Part A and delay Part B without penalty as long as your employer has 20 or more employees.

Do I lose Medicare if I go back to work after 65?

No. Once you are enrolled in Medicare at 65, your coverage continues even if you return to work or earn income. You can have both Medicare and employer coverage at the same time.

What if I was born outside the United States?

Non-citizens may have different may be able to access rules. You generally need to have been a permanent resident for at least five years and be age 65 or older. Contact Social Security or Medicare directly to understand your specific situation.

Can my spouse enroll in Medicare at 65 if I am younger?

Yes. Each person becomes may be able to access at their own age 65, regardless of their spouse's age. Your spouse can enroll at 65 even if you are younger and not yet may be able to access.