Reviewed against official SSA methodology · Last reviewed: June 2026
Your Social Security retirement benefit is not a random figure — it is built from your lifetime earnings through a precise, three-stage formula. SSA indexes your wages, averages your top 35 years into your AIME, runs that through a bend-point formula to get your PIA, and then adjusts for the age you claim. This 2026 guide walks through each step with the current bend points so you can see exactly how your check is calculated.
Quick summary — the benefit formula
- SSA uses your 35 highest-earning years, indexed for wage growth.
- Those become your AIME (Average Indexed Monthly Earnings).
- The PIA formula applies 90%, 32%, and 15% at two bend points.
- 2026 bend points: $1,286 and $7,749.
- Your PIA is then adjusted up or down for the age you claim.
Quick Answer
Social Security builds your retirement benefit from your lifetime earnings through a three-stage formula. SSA indexes your wages, averages your 35 highest-earning years into your AIME, runs that through the PIA bend-point formula using fixed 90%, 32%, and 15% rates, and then adjusts the result for the age you claim. See the 2026 figures in the worked example above.
Key Takeaways
- SSA uses your 35 highest-earning years, indexed for wage growth; fewer than 35 years are filled with zeros that pull your average down.
- Your Average Indexed Monthly Earnings (AIME) is found by adding those 35 indexed years and dividing by 420, the number of months in 35 years.
- The PIA formula applies fixed rates of 90%, 32%, and 15% at two bend-point thresholds; only the bend-point dollar amounts change each year with wage growth.
- Your PIA is your benefit at full retirement age; claiming as early as 62 permanently reduces it, while waiting up to 70 adds delayed retirement credits.
- The bend-point dollar amounts shown apply to people who reach 62 in 2026, and each birth-year cohort has its own set.
Official sources: SSA — Social Security · Last reviewed: June 2026
Step 1: Your 35 highest-earning years
SSA looks at your entire earnings history and selects your 35 highest-earning years. Each year’s earnings are indexed — adjusted upward to reflect wage growth over time — so that wages you earned decades ago are comparable to today’s. If you worked fewer than 35 years, SSA fills the missing years with zeros, which pulls your average down.
Step 2: Your AIME
SSA adds up your 35 highest indexed years of earnings and divides by 420 (the number of months in 35 years). The result is your Average Indexed Monthly Earnings (AIME) — the single number that feeds the benefit formula. A higher AIME means a higher benefit, but as we will see, the formula deliberately gives more weight to lower earnings.
Step 3: The PIA formula and 2026 bend points
Your Primary Insurance Amount (PIA) — the benefit you get at full retirement age — comes from applying three fixed percentages across two bend points. For workers who turn 62 in 2026, the formula is:
| Portion of your AIME | Multiplied by |
|---|---|
| First $1,286 | 90% |
| From $1,286 up to $7,749 | 32% |
| Above $7,749 | 15% |
The three results are added together and rounded down to the next dime. The 90% / 32% / 15% percentages are set by law and never change; only the bend-point dollar amounts adjust each year with wage growth.
A worked example (2026)
Suppose your AIME works out to $6,000. Using the 2026 bend points:
- 90% of the first $1,286 = $1,157.40
- 32% of the next $4,714 ($6,000 − $1,286) = $1,508.48
- 15% above $7,749 = $0 (your AIME is below it)
Add them: about $2,665 a month at full retirement age. That is your PIA — before any adjustment for when you claim.
Step 4: Adjusting for the age you claim
Your PIA is the benefit at your full retirement age (FRA). Claim earlier (as early as 62) and it is permanently reduced; wait past FRA (up to 70) and it grows with delayed retirement credits. So two people with the same PIA can receive very different checks depending on timing. Our guide to Full Retirement Age 2026 breaks down the exact reductions and credits.
Why the formula favors lower earners
Notice the percentages drop sharply — 90%, then 32%, then 15%. This makes Social Security progressive: it replaces a much larger share of income for lower earners than for high earners. That is also why earning a little more late in your career often raises your benefit only modestly once you are past the first bend point.
How to increase your calculated benefit
Because the formula is mechanical, the levers that raise your benefit are clear:
- Work at least 35 years so no zeros are averaged in.
- Replace low years — a year of higher earnings late in your career can knock out an old low or zero year and lift your AIME.
- Delay claiming past full retirement age (up to 70) to add delayed retirement credits on top of your PIA.
- Check your earnings record at my Social Security — an employer error or missing year can quietly lower your AIME.
Even one or two corrected years can change your monthly benefit for life, so it is worth reviewing your record before you file.
Key takeaways
- Benefit = 35 best indexed years → AIME → PIA → claim-age adjustment.
- 2026 bend points: $1,286 and $7,749; rates 90/32/15%.
- Fewer than 35 years means zeros drag down your average.
- The formula is progressive — it replaces more income for lower earners.
Common misunderstandings
- Thinking only your last few years count — it is your top 35.
- Ignoring zero years — they can substantially lower your AIME.
- Assuming the PIA is what you receive — claim age changes it.
- Expecting high earnings to scale 1:1 — the 15% tier is small.
Related resources
- Average & maximum benefit 2026 — what the formula produces in practice.
- Full Retirement Age 2026 + when to claim
- How the COLA is calculated
- Social Security in 2026: the complete guide
Frequently asked questions
How is my Social Security benefit calculated?
SSA indexes your lifetime earnings, averages your 35 highest years into your AIME, applies the PIA formula (90%, 32%, and 15% across two bend points), and then adjusts the result up or down based on the age you claim.
What are the 2026 bend points?
For workers turning 62 in 2026, the PIA bend points are $1,286 and $7,749. The formula pays 90% of AIME up to $1,286, 32% between $1,286 and $7,749, and 15% above $7,749.
What is AIME?
Average Indexed Monthly Earnings — the total of your 35 highest indexed earning years divided by 420 months. It is the figure the PIA formula is applied to.
What is PIA?
Primary Insurance Amount — the monthly benefit you would receive at your full retirement age, before any adjustment for claiming earlier or later.
Why does working fewer than 35 years lower my benefit?
SSA always averages 35 years. If you worked fewer, it fills the missing years with zeros, which lowers your AIME and therefore your benefit.
Does claiming age change the formula?
The formula produces your PIA at full retirement age. Claiming before FRA permanently reduces it; delaying past FRA up to age 70 increases it with delayed retirement credits.
Do the 90/32/15 percentages ever change?
No. Those percentages are fixed in law. Only the bend-point dollar amounts are updated each year to reflect national wage growth.
The Guru Gazette is an independent publisher and is not affiliated with the Social Security Administration. This is general information, not financial advice — confirm details with SSA. Last reviewed: June 2026.
Sources
- SSA — Primary Insurance Amount: https://www.ssa.gov/oact/cola/piaformula.html
- SSA — Benefit Formula Bend Points (2026): https://www.ssa.gov/oact/cola/bendpoints.html
- SSA — Average Indexed Monthly Earnings (AIME): https://www.ssa.gov/oact/cola/Benefits.html
- SSA — Benefit Calculation Examples for Workers Retiring in 2026: https://www.ssa.gov/oact/progdata/retirebenefit2.html
People Also Ask
What does it mean for SSA to index my earnings?
Indexing means each year’s earnings are adjusted upward to reflect wage growth over time, so that wages you earned decades ago are comparable to today’s. This keeps older earnings from being undervalued when SSA averages your 35 highest years. Only earnings up to a certain point in your career are indexed; later years are typically counted at their actual value.
Why do the bend-point dollar amounts differ by birth year?
The bend-point dollar amounts are tied to the year you reach 62, and they adjust each year with national wage growth, so each birth-year cohort has its own set. The 90%, 32%, and 15% percentages stay the same for everyone. Because of this, two people with identical earnings but different birth years can have slightly different benefit calculations.
How can I increase my calculated Social Security benefit?
Because the formula is mechanical, the levers are clear: work at least 35 years so no zeros are averaged in, and replace low years, since higher earnings late in your career can knock out an old low or zero year and lift your AIME. Delaying past full retirement age adds delayed retirement credits, and checking your earnings record for errors can correct a quietly lowered AIME.
Are delayed retirement credits part of my PIA or added separately?
Delayed retirement credits are added on top of your PIA, not built into it. Your PIA is the benefit calculated at full retirement age through the bend-point formula. If you wait past full retirement age, up to 70, those credits increase your monthly payment above your PIA. Claiming before full retirement age instead applies a permanent reduction to the PIA.
Why is the AIME calculated by dividing by 420?
AIME stands for Average Indexed Monthly Earnings, and it is a monthly figure. SSA adds your 35 highest indexed years of earnings and divides by 420, which is the number of months in 35 years (35 multiplied by 12). The result is the single monthly earnings number that feeds the PIA formula. A higher AIME generally produces a higher benefit.
Related guides
- Social Security 2026 Guide
- SSDI Eligibility 2026: Do You Qualify for Disability Benefits?
- Taxes on Social Security Benefits 2026
- Average & Maximum Social Security Benefit 2026
- Medicare 2026 Guide
- Tax Credits 2026 Guide
Reviewed by the Guru Gazette Editorial Review Team · Last reviewed June 2026. Figures are verified against official government sources; see our Fact-Checking Policy.