Full Retirement Age: What It Is by Birth Year and Why It Matters

In 1983, Congress quietly changed a number that would affect every American worker for decades. They raised the Full Retirement Age from 65 to 67. Not all at once. Gradually, over 39 years, phasing it in so slowly that most people born after 1960 never noticed the shift. They just know they can't collect their full Social Security check at 65 like their parents did.

That two-year delay doesn't sound like much. But for someone whose benefit would be $2,000 a month at Full Retirement Age, claiming at 62 instead of waiting until 67 permanently cuts the check to $1,400. Every month. For life. Over a 20-year retirement, that's $144,000 in lost income.

Your Full Retirement Age is the hinge point for one of the biggest financial decisions you'll make. Here's how it actually works.

The short version: Full Retirement Age (FRA) is the age when you qualify for 100% of your Social Security benefit. It ranges from 66 to 67 depending on your birth year. Claiming before FRA permanently reduces your benefit by up to 30%. Delaying past FRA increases it by 8% per year, up to age 70. The math is straightforward; the decision is personal.

The Full Retirement Age Table

This table covers everyone currently approaching retirement. If you were born before 1943, your FRA was 65 or younger, but that ship has sailed.

If you were born on January 1st of any year, the SSA considers you to have been born in the previous year. Born January 1, 1960? Your FRA is 66 and 10 months, not 67. It's a minor quirk, but it matters when every month counts [1].

What Happens When You Claim Early

You can start collecting Social Security at 62, but "can" and "should" are different words.

The SSA reduces your benefit by 5/9 of 1% for each month you claim early during the first 36 months before FRA, then by 5/12 of 1% for each additional month beyond that [2]. The math sounds arcane. The result is concrete.

For someone born in 1960 or later (FRA of 67):

These reductions are permanent. They don't "catch up" when you hit 67. The check you get at 62 is the check you get at 82 (adjusted for inflation through annual COLA increases, but the base reduction never goes away).

Let's say Tom, born in 1964, has a projected FRA benefit of $2,000 per month. He claims at 62 and gets $1,400. His neighbor Karen, same birth year, same FRA benefit, waits until 67. Karen gets $2,000.

By age 80, Karen has collected more total money than Tom, even though Tom started five years earlier. That's the "break-even" point, and it typically falls between ages 78 and 82 for most people [3].

What Happens When You Delay

For every year you wait past FRA (up to age 70), your benefit increases by 8% annually. This is called a "delayed retirement credit" [4].

That's a guaranteed 8% annual return on money you haven't withdrawn. No investment in the world offers guaranteed 8% returns. The trade-off is that you need other income sources to live on while you wait.

There's no benefit to waiting past 70. The credits stop accumulating. If you're turning 70 and haven't filed, do it now.

The maximum possible Social Security benefit for someone retiring at age 70 in 2026 is $5,181 per month [5]. That requires maxing out earnings subject to Social Security tax for 35 years. Most people won't get there, but it shows the ceiling.

The Earnings Test: Working While Collecting

If you claim Social Security before FRA and continue working, the SSA may temporarily withhold some benefits. This is the "Retirement Earnings Test."

For 2026 [6]:

The money isn't gone forever. The SSA recalculates your benefit at FRA and credits back the withheld amounts by increasing your monthly check going forward. But in the years before FRA, the temporary reduction can feel painful.

Here's a concrete example. Diane is 63 in 2026, collecting $1,500 per month ($18,000/year) in Social Security, and working part-time earning $34,480.

• Excess earnings: $34,480 − $24,480 = $10,000
• Withholding: $10,000 ÷ 2 = $5,000 withheld for the year
• Net effect: She keeps $13,000 in Social Security for the year instead of $18,000 (she loses about 3.3 months of checks)

Once Diane hits FRA, the earnings test disappears completely. She can earn $500,000 a year and collect every penny of her Social Security check.

FRA Is Not the Same as Medicare Age

A common source of confusion: Full Retirement Age for Social Security and Medicare eligibility are different things.

Medicare starts at 65. Period. Your Social Security FRA might be 67, but Medicare doesn't wait. You need to enroll during your Initial Enrollment Period (the 7-month window around your 65th birthday), or you may face permanent premium penalties [7].

If you're still working at 65 with employer-provided health insurance, you may be able to delay Medicare Part B without penalty. But the rules are specific, and getting them wrong is expensive.

For a chronological view of all the key ages and deadlines you need to track, see our retirement milestones guide from age 50 to 72.

Should You Claim Early, On Time, or Late?

There's no universally right answer. But there are situations that tilt the math:

Claim early (62–64) if:

• You have a serious health condition and shorter life expectancy
• You need the income to cover basic expenses and have no other sources
• You've already stopped working and are depleting savings at an unsustainable rate

Claim at FRA (66–67) if:

• You're in average health and want a balanced approach
• You have enough savings to bridge the gap from retirement to FRA

Delay to 70 if:

• You're in good health and have longevity in your family
• You have a spouse who will benefit from a higher survivor benefit
• You can live off other income sources (portfolio, part-time work, pension)

Here's the opinion I'll put a stake in the ground on: most people should delay longer than their gut tells them. Only about 10% of workers actually wait until 70, despite studies showing the vast majority would benefit from delaying [8]. The psychology of "I want my money now" is powerful. The math of "you'll have more money total by waiting" is more powerful.

Your Next Move

1. Find your FRA in the table above. Then go to SSA.gov and create a my Social Security account to see your projected benefit at 62, FRA, and 70.

2. Run the break-even math. Multiply your early benefit by the number of months you'd collect it, and do the same for your FRA or age-70 benefit. Where do the lines cross? Use our early retirement calculator to model this.

3. Factor in your spouse. If you're married, the higher earner's claiming decision affects the survivor benefit. Delaying the higher earner's benefit to 70 can provide a much larger check to the surviving spouse.

4. Don't forget the earnings test. If you plan to work and collect before FRA, estimate your earnings against the $24,480 limit to avoid surprises.

5. Separate Medicare from Social Security in your planning. Medicare enrollment at 65 is its own deadline with its own penalties. Mark your calendar 7 months before your 65th birthday.

For context on how the average American's savings stack up against what Social Security covers, see our retirement statistics breakdown. And if you're considering how to build your broader investment portfolio, that's where the bridge between Social Security and your living expenses gets funded.

References

1. Social Security Administration. (2025). Full Retirement Age. SSA.gov.
2. Social Security Administration. (2025). Benefit Reduction for Early Retirement. SSA.gov.
3. Social Security Administration. (2025). Retirement Benefits: When to Start Receiving Retirement Benefits. SSA.gov.
4. Social Security Administration. (2025). Late Retirement: Delayed Retirement Credits. SSA.gov.
5. Social Security Administration. (2026). Retirement Benefits: Benefits Calculated for 2026. SSA.gov.
6. Social Security Administration. (2025). How Work Affects Your Benefits. SSA.gov.
7. Centers for Medicare & Medicaid Services. (2025). Original Medicare (Part A and B) Eligibility and Enrollment. CMS.gov.
8. The Motley Fool / NBER Study. (2026). Why 90% of Retirees Should Delay Social Security. Fool.com.