What Is Full Retirement Age?

Your Full Retirement Age (FRA) is the age at which you qualify to receive your full, unreduced Social Security retirement benefit. It’s set by federal law based on your birth year — not a fixed age for everyone.

Claiming before your FRA permanently reduces your benefit. Claiming after your FRA (up to age 70) permanently increases it.

Understanding your FRA is essential for Social Security planning — and it also has direct implications for when and how you enroll in Medicare.

Full Retirement Age by Birth Year

Claiming Early vs. Waiting: The Trade-Offs

Claiming Early (as young as 62)

You can begin Social Security benefits as early as age 62 — but your monthly benefit will be permanently reduced. The reduction depends on how many months before your FRA you Claim.

• Claiming 36 months early: benefit reduced by 20%
• Claiming more than 36 months early: each additional month adds another 5/12 of 1% reduction

Example: If your FRA is 67 and you claim at 62 (60 months early), your benefit is reduced by approximately 30%.

Claiming at Full Retirement Age

You receive 100% of your calculated benefit — no reduction, no increase.

Delaying Past Full Retirement Age (up to 70)

For each month you delay past FRA, your benefit grows by 2/3 of 1% (about 8% per year). Delaying from 67 to 70 increases your benefit by approximately 24%.

The breakeven calculation: Delaying benefits means receiving a larger check but missing earlier checks. For most people, the breakeven point — where the higher delayed benefit surpasses the cumulative missed early benefits — falls somewhere in their late 70s to early 80s.

How Full Retirement Age Connects to Medicare

Medicare and Social Security are separate programs with separate rules — but they interact in important ways.

Medicare eligibility starts at 65, regardless of your Social Security FRA. This means even if your FRA is 67, you can and should consider enrolling in Medicare at 65.

If you’re receiving Social Security benefits when you turn 65: You’ll be automatically enrolled in Medicare Parts A and B. Your Part B Premium will be deducted from your Social Security check.

If you haven’t claimed Social Security at 65: You can still enroll in Medicare — but you must do so actively. You won’t be automatically enrolled. Missing your Medicare enrollment window can result in permanent late enrollment penalties, regardless of when you plan to take Social Security.

Delaying Social Security does NOT delay Medicare eligibility. These are independent decisions.

The Social Security and Medicare Decision Framework

Here’s how most people approach the combined decision:

Enroll in Medicare at 65. For most people, this is the right call regardless of Social Security plans. Medicare eligibility is separate from Social Security claiming age, and the penalties for missing Medicare enrollment windows are permanent.

Decide Social Security separately. Factors to consider include your health, life expectancy, whether you have a spouse whose benefit is affected by your claiming age, whether you’re still working, and your other income sources.

If you’re still working at 65 with employer coverage: You may be able to delay both Medicare (if your employer has 20+ employees) and Social Security without Penalty. Learn more about working past 65 →

Frequently Asked Questions

Does claiming Social Security early affect my Medicare eligibility?
No. Medicare eligibility starts at 65 based on your age, not when you claim Social Security. Claiming Social Security early (at 62, for example) means you’ll have a gap of several years before Medicare eligibility — during which you’ll need other health coverage.

If I delay Social Security past 65, will I be automatically enrolled in Medicare?
No. Automatic Medicare enrollment only happens if you’re already receiving Social Security or Railroad Retirement Board benefits when you turn 65. If you’re not, you need to actively enroll in Medicare during your Initial Enrollment Period.

Can I be on Medicare and Social Security at the same time?
Yes — and most people are. Medicare typically begins at 65, while Social Security can begin anywhere from 62 to 70. Many people are on Medicare for years before they claim Social Security.

Does my Social Security benefit affect my Medicare premium?
Your income affects your Medicare Part B premium through IRMAA (Income-Related Monthly Adjustment Amount). If your income exceeds certain thresholds, you pay a higher Part B premium. Social Security benefits are counted in MAGI for this purpose in some circumstances. Use our IRMAA calculator →

Can my spouse’s work record affect my Medicare?
Social Security yes — you may qualify for spousal benefits based on your spouse’s work record. Medicare eligibility based on a spouse’s work history applies to premium-free Part A: if you haven’t worked enough quarters yourself but your spouse has, you may still get premium-free Part A at 65.

Thinking Through Your Retirement Timeline?

If you’re approaching 65 and figuring out how Medicare fits into your broader retirement plan, our free Medicare eCourse walks you through every decision — in plain language, in the right order.

Enroll in the free REMEDIGAP Medicare eCourse →