Zero earning years: what early retirement does to Social Security

By Tom, CPA · Updated October 25, 2026

TL;DR: Social Security averages your top 35 years of indexed earnings, so years of zero do lower your benefit. But the benefit formula replaces 90% of the first $1,286 of average monthly earnings and 32% of the next tier, so cutting your career short reduces benefits far less than proportionally.

Educational only, not tax, legal, or investment advice. Examples are illustrations, not predictions. Rules and limits change; verify current figures and talk to a qualified professional about your situation.

Retiring at 40 does not zero out Social Security. The bend points are your friends. A common worry in early retirement circles goes like this: "If I stop working at 45, I'll have 15 zero years in my 35-year average, so my benefit will collapse." The first half is true. The second half usually isn't.

This guide explains how the average works, how the progressive formula cushions the hit, a step-by-step example using 2026 figures, and how to adjust your SSA statement for the career you actually plan.

CPA Warning Label: Your SSA statement assumes you'll keep working until you claim. If you retired at 42, it is projecting the career of a person you no longer are.

35-year averaging

Social Security computes your Average Indexed Monthly Earnings (AIME):

1. Each year's earnings up to the taxable maximum are indexed to wage growth through the year you turn 60. Earnings after 60 count at face value.
2. The highest 35 years are selected. If you have fewer than 35 years of earnings, zeros fill the rest.
3. The total is divided by 420, the number of months in 35 years.

The taxable maximum is $184,500 for 2026 and $192,300 for 2027, so very high earners can't push AIME beyond the indexed maximum.

Bend points

AIME is converted into the Primary Insurance Amount (PIA), the benefit at full retirement age, with a progressive formula. For people first eligible (turning 62) in 2026, SSA's formula is:

• 90% of the first $1,286 of AIME, plus
• 32% of AIME over $1,286 and through $7,749, plus
• 15% of AIME over $7,749.

For those turning 62 in 2027, the bend points are $1,340 and $8,077. The bend points are indexed each year, and your formula is locked in by the year you turn 62. The dollar amounts are then increased by COLAs.

Why the impact is smaller than feared

The first tier is replaced at 90%, the second at 32%, the third at 15%. Zero years mainly pull AIME down out of the 15% and 32% zones, where each dollar of AIME produces fewer benefit dollars. You lose cheap dollars first, and keep the expensive 90% ones.

In other words, the last 10 years of a 35-year career produce much less benefit per dollar of payroll tax than the first 10 did. That's the formula working as designed: it favors lower lifetime earnings, and an early retiree's lifetime earnings look lower.

Example

Illustration: Jo has indexed earnings of $80,000 a year. Compare three careers, using the 2026 bend points (today's dollars, ignoring COLAs):

Math for 20 years: $80,000 × 20 ÷ 420 = $3,810. PIA = 0.90 × $1,286 + 0.32 × ($3,810 − $1,286) = $1,157 + $808 = $1,965.

Working 43% fewer years (20 instead of 35) cuts the benefit by 32%, not 43%. Each extra year from 20 to 25 adds about $61 a month of benefit at full retirement age, or roughly $730 a year for life, plus COLAs. Try your own numbers with the zero years calculator.

Reading your statement

Your SSA statement at ssa.gov shows estimates at 62, at full retirement age and at 70. The fine print: it assumes you continue to earn about what you earned recently until you claim. For an early retiree, that overstates the benefit. To adjust:

1. Download your earnings record.
2. Index past earnings using SSA's average wage index factors, or use SSA's detailed calculator.
3. Add your planned future working years and zeros.
4. Apply the bend points for the year you'll turn 62.

See reading your SSA statement for a guided tour.

Ways to replace zero years

• Part-time work. Any year of earnings that beats your lowest current year in the top 35 raises AIME. A year of $20,000 replaces a zero.
• Self-employment. Net earnings from self-employment count, and self-employment tax funds them.
• Earning after 60. These years count at face value, not indexed, but can still replace zeros.

But weigh it: payroll tax is 12.4% Social Security plus Medicare tax, and the extra benefit per year may be small. Don't take a job you don't want only to tweak AIME.

Policy uncertainty

As of Oct 2026, Social Security's trustees project that the trust funds can't pay full scheduled benefits indefinitely without legislative changes. Nobody knows what changes Congress will make. Many planners model a haircut scenario. Treat any projection as a range, and recheck after any legislation.

What zero years do and don't affect

• Your own retirement benefit: yes, through a lower AIME and PIA.
• Spousal benefits on your record: yes, because they're up to 50% of your PIA.
• Survivor benefits on your record: yes, because they're based on your benefit.
• Eligibility: generally no, once you have 40 credits (about 10 years of covered work). Early retirees almost always have this.
• Early-claiming reduction and delayed credits: no. The percentages are the same; they apply to a smaller PIA.
• COLAs: no. Once you're 62, COLAs increase your PIA the same way regardless of your work history.

Illustration: high earner who stops at 40

Illustration: Sam earned at or near the taxable maximum from 23 to 40, 18 years. Suppose that, indexed to today's wages, each year is about $180,000. AIME = $180,000 × 18 ÷ 420 = about $7,714, just under the second bend point. PIA = 0.90 × $1,286 + 0.32 × ($7,714 − $1,286) = $1,157 + $2,057 = about $3,214.

Had Sam worked 35 years at the maximum, AIME would be about $15,000, and PIA = $1,157 + 0.32 × ($7,749 − $1,286) + 0.15 × ($15,000 − $7,749) = $1,157 + $2,068 + $1,088 = about $4,313.

So 17 fewer working years, about half the career, cut Sam's PIA by roughly 25%. The last 17 years at the cap would have bought Sam about $1,100 a month of extra benefit, almost all from the 15% tier. That's the bend point effect in its purest form, and it's why high-earning early retirees are often surprised by how much Social Security they keep.

Planning with a lower but real benefit

For a portfolio plan, the adjusted PIA matters more than the statement's headline. A realistic Social Security estimate reduces how much your portfolio must fund after claiming, which can lower your required savings or raise your safe spending. Run the plan with a cautious number, such as your adjusted estimate reduced by a policy haircut, and treat any surplus as margin. Then recheck every few years as SSA publishes new bend points and as your plans change.

Common mistakes when estimating

• Using nominal earnings. A $30,000 salary from 1995 is worth far more after wage indexing. Unindexed math understates AIME.
• Forgetting the cap. Earnings above the taxable maximum in any year don't count.
• Using the wrong bend points. Use the bend points for the year you turn 62, not the current year. Until then, current bend points are a reasonable stand-in in today's dollars.
• Ignoring the claiming age. AIME and PIA describe benefits at full retirement age. Claiming at 62 or 70 changes the check.
• Double-counting inflation. If you estimate in today's dollars, compare with today's spending, not future spending.

Couples: whose zero years matter more

In a couple, the higher earner's PIA drives the survivor benefit, and up to half of it may drive a spousal benefit. So zero years in the higher earner's record ripple further than zero years in the lower earner's. If one spouse is considering a few more working years for Social Security reasons, the higher earner's extra years usually move the household total more, especially if they fall in the 32% tier. If the lower earner's own PIA is already below half of the higher earner's, extra work by the lower earner may change little, because the spousal benefit would top them up anyway.