Explainer · Health Coverage
Medicare Eligibility Age: When You Qualify and How to Sign Up
Most people qualify for Medicare at age 65. You can apply three months before your birthday to start coverage without delays.
Benefits Research Desk
Published Sep 21, 2026 · Reviewed Sep 21, 2026 · 2 min read
Quick answer: You qualify for Medicare at age 65. You should apply about three months before your birthday so your coverage starts right when you turn 65.
Who Qualifies for Medicare at 65
Medicare is health coverage for people age 65 and older. It also covers some younger people with disabilities or certain medical conditions.
You become eligible for Medicare automatically on the first day of the month you turn 65. You don't have to wait to reach exactly age 65—Medicare enrollment starts the month of your birthday.
How to Apply for Medicare
You should apply about three months before you turn 65. This gives time to process your application so coverage begins on your eligibility date.
You can apply in several ways:
- Visit Medicare.gov and create an account
- Call Social Security at 1-800-772-1213 (TTY 1-800-325-0778)
- Visit your local Social Security office in person
- Contact your local Medicare office
Applying is free. Only Medicare decides if you qualify.
What Happens If You Miss the Sign-Up Window
You have a seven-month initial enrollment period to sign up for Medicare. This period starts three months before the month you turn 65 and ends three months after.
If you miss this window, you may face late penalties. These penalties add to your monthly Medicare costs and usually stay with you permanently. The longer you wait to enroll, the higher your penalties may be.
Even if you're still working at 65, you should consider enrolling. The enrollment deadline applies regardless of your work status.
What Medicare Covers
Medicare has different parts that cover different services:
- Part A covers hospital care, skilled nursing, hospice, and some home health services
- Part B covers doctor visits, outpatient services, and medical equipment
- Part D covers prescription drugs
- Part C (Medicare Advantage) combines Parts A, B, and usually D through a private insurance plan
Most people who worked and paid Medicare taxes qualify for Part A at no monthly cost. You usually pay a monthly premium for Part B.
Special Circumstances
Some people qualify for Medicare before age 65:
- People who have received Social Security disability benefits for 24 months
- People with end-stage renal disease (ESRD)
- People with amyotrophic lateral sclerosis (ALS)
If any of these apply to you, contact Social Security or Medicare directly to learn about your options.
Next Steps
Start planning about three months before your 65th birthday. Visit Medicare.gov to create an account and review your coverage options. Choose the plan that works best for your health needs and budget.
Questions? Contact Medicare or Social Security. Both agencies can help you understand your coverage options and complete your application at no cost.
Frequently asked questions
What's the earliest I can apply for Medicare?
You can apply three months before the month you turn 65. This ensures your coverage starts on your eligibility date without gaps.
Do I have to pay to apply for Medicare?
No. Applying for Medicare is free. Only the Medicare agency decides if you qualify.
What if I'm still working at 65?
You should still enroll in Medicare even if you're working. Missing the enrollment window can result in permanent late penalties.
Can I get Medicare before age 65?
Yes, if you've received Social Security disability benefits for 24 months, have end-stage renal disease, or have ALS. Contact Social Security to learn more.
What happens if I miss the enrollment deadline?
You may face late penalties that increase your monthly Medicare costs and usually stay with you permanently.
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Last reviewed Sep 21, 2026. Found an error? Tell us.
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