Social Security calculates a retirement benefit from your covered earnings record, not simply from your last salary or your average earnings over your entire career. The Social Security Administration (SSA) wage-indexes earlier earnings, generally selects the highest 35 years, and uses them to calculate average indexed monthly earnings (AIME). It then applies a progressive formula to get the primary insurance amount (PIA). Your PIA is a starting point: your claiming age, later cost-of-living adjustments (COLAs), rounding, and possible deductions affect the amount ultimately paid.
How does Social Security calculate a retirement benefit?
The calculation has two main stages. First, SSA turns a worker’s covered earnings history into AIME. Second, it applies a formula to AIME to calculate the PIA. The PIA is associated with claiming at full retirement age before adjustments for claiming early or late; it is not necessarily the monthly payment a person receives.
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- Wage-index earlier earnings. SSA adjusts past earnings using wage-indexing factors so that older earnings are considered in the context of changes in average wages. Earnings in the year a worker reaches age 60 and later are not wage-indexed in the same way.
- Choose computation years. For a typical retired worker, SSA selects the highest indexed earnings years, up to 35.
- Calculate AIME. SSA adds the selected indexed earnings, divides by the number of months in the computation period, and rounds the result down to the next lower dollar. For 35 years, the divisor is 420 months.
- Apply the PIA formula. SSA applies three percentages to successive portions of AIME. The dollar thresholds between those portions are called bend points, and they depend on the year a person first becomes eligible.
- Adjust the PIA for payment. Claiming age relative to full retirement age, COLAs, rounding, and possible deductions affect the payable monthly amount.
This sequence explains why a benefit estimate depends on both the earnings record SSA has for you and when you plan to claim. A salary figure by itself cannot determine a personal benefit. The formula also separates the calculation into stages: an earnings history determines AIME, the applicable bend points determine the PIA, and timing and later adjustments shape the payment.
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How do the highest 35 years affect AIME?
For a typical retired-worker computation, SSA uses the highest 35 years of indexed earnings. “Highest” refers to the earnings after applicable wage indexing, not necessarily the years with the largest raw dollar amounts. The indexing step puts earlier earnings into the framework used for the benefit calculation; it does not mean that every year is converted in the same way. In particular, the earnings in the year a worker reaches age 60 and later are not wage-indexed in the same way as earlier earnings.
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If you have fewer than 35 years with earnings, SSA can include zero-earnings years in the computation. Those years occupy places among the 35 years and reduce the average used to calculate AIME. If you have more than 35 years, the calculation selects the highest indexed years rather than automatically using every year in your work history. That means the relevant comparison is not simply “more years worked” versus “fewer years worked”: the indexed earnings selected for the computation matter.
Once the selected years are known, their indexed earnings are added and divided by the number of months in those years. With 35 computation years, that is 35 × 12, or 420 months. SSA rounds AIME down to the next whole dollar. AIME is therefore a monthly average used as the input to the benefit formula, not the worker’s actual average monthly paycheck.
A simplified illustration of the 35-year calculation
Suppose a worker’s 35 selected years have total indexed earnings of $1,000,000. Dividing by 420 months gives about $2,380.95, so the AIME would be $2,380 after rounding down. This is an arithmetic illustration only, not an estimate of a Social Security benefit: the selected earnings, indexing, and the applicable eligibility-year formula must all be known to calculate an individual amount.
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The illustration also shows why a career total alone is not enough. A personal calculation depends on which years qualify among the highest computation years and the indexed values SSA uses for those years. If a record contains fewer than 35 years with earnings, zero-earnings years can be part of the average; if it contains more, not every year is necessarily used.
What are the 2026 bend points and PIA formula?
The PIA formula is progressive: 90%, 32%, and 15% apply to successive portions of AIME. The percentages are not applied to all of AIME as one flat rate. Bend points mark where one portion ends and the next begins.
For people first eligible in 2026, the bend points are $1,286 and $7,749. In retirement cases, the first-eligibility year is generally the year the person reaches age 62. The 2026 thresholds do not apply universally to people who became eligible in other years. The eligibility year therefore matters even when two workers have the same AIME: they may be subject to different bend points if they first became eligible in different years.
| Portion of 2026 AIME | Percentage used in PIA formula |
|---|---|
| First $1,286 | 90% |
| Amount above $1,286 through $7,749 | 32% |
| Amount above $7,749 | 15% |
To calculate a PIA, apply each percentage only to the part of AIME in its range, add the results, and round the total down to the next dime. The formula’s lower percentage on higher portions makes it progressive: an additional dollar of AIME does not translate into a dollar of PIA. The bend points are cutoffs for the formula’s portions, not benefit amounts paid to a worker.
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SSA’s 2026 example uses an AIME of $5,825. Because that amount is above the first bend point but below the second, the calculation is:
- 90% of the first $1,286: $1,157.40.
- 32% of the amount from $1,286 to $5,825: 32% of $4,539, or $1,452.48.
- No amount falls above the second bend point in this example, so the 15% portion contributes $0.
The unrounded total is $2,609.88. Rounding the PIA down to the next dime gives $2,609.80. This illustrates the formula for a worker retiring in 2026; it is not an estimate for a particular reader. A different AIME would change the amounts falling into each portion, and a different first-eligibility year can mean different bend points.
Why your PIA may differ from the check you receive
The PIA is the baseline benefit associated with claiming at full retirement age before early- or delayed-claiming adjustments. Claiming before full retirement age lowers the amount. Claiming after full retirement age raises it under rules tied to age and birth year. The applicable adjustment cannot be stated as one universal percentage: the worker’s birth year and claiming month matter.
That is why comparing claim dates requires more than looking at the PIA alone. Compare the actual SSA estimates for the dates you are considering, with the same earnings assumptions, and note the monthly amounts associated with each date. The relevant comparison includes claiming age relative to full retirement age, birth year, and the size and timing of future monthly payments. There is no single best claiming age established by the PIA formula itself.
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These are distinct parts of the calculation: the earnings record produces AIME; the eligibility-year formula converts AIME to PIA; and claiming timing and later adjustments help determine the payable amount. A personal estimate requires the person’s actual earnings record and intended claim timing.
How to check what earnings and timing mean for your estimate
Use SSA’s own estimate and earnings record as the starting point for a personal figure. The record matters because an omitted or incorrect earnings year can affect which years are selected and the resulting AIME. The intended claiming month matters because the adjustment from PIA depends on when you claim relative to full retirement age and on birth-year-specific rules.
- Review your earnings record. Check the covered earnings history used for your SSA estimate. Look for years that appear missing or inconsistent with your records.
- Compare possible claim dates. Use SSA’s estimate for the ages or dates you are considering, rather than applying a generic early- or delayed-claiming percentage to your PIA.
- Keep the estimate’s assumptions in view. An estimate is tied to the earnings information and claim timing used to produce it. If either changes, the result may change.
- Ask SSA about a discrepancy. If your earnings history appears wrong or you need a calculation for a specific claiming month, consult SSA using your records and circumstances. The formula alone cannot resolve a personal record question.
For a useful comparison, keep the claim dates and other assumptions consistent, and compare the monthly estimates that SSA provides. Whether a particular claiming age is preferable depends on individual and household circumstances; the formula does not establish one best age for everyone. Treat an estimate as a result tied to the earnings record and claim timing used, rather than as a permanent number independent of those inputs.
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What the formula can—and cannot—tell you
- It can show how covered earnings become a baseline benefit. The 35-year computation, AIME, bend points, and PIA formula explain the main calculation.
- It cannot produce a personal amount from salary alone. SSA needs the earnings record, the applicable eligibility year, and intended claim timing.
- It does not make 2026 bend points universal. Those values apply to people first eligible in 2026; other eligibility years have different bend points.
- It does not make PIA identical to the deposit. Claiming-age adjustments, COLAs, rounding, and applicable deductions affect the amount paid.
SSA’s source materials for these rules include Social Security Benefit Amounts, Social Security Retirement Benefit Calculation: Benefit Calculation Examples for Workers Retiring in 2026, Application of COLA to a Retirement Benefit, and Annual Statistical Supplement, 2025, Appendix C: Computing a Retired-Worker Benefit.
Frequently Asked Questions
How does Social Security calculate my retirement benefit?
SSA wage-indexes earlier covered earnings, selects the highest computation years—generally up to 35—then divides their indexed total by the months in those years to calculate AIME. SSA applies the progressive PIA formula using the bend points for the person’s first-eligibility year. Claiming timing and later adjustments affect the amount paid.
What happens if I have fewer than 35 years of earnings?
For a typical retired-worker calculation, SSA can include zero-earnings years when there are fewer than 35 years with earnings. Those years are included in the computation and reduce the average used to calculate AIME.
Are the 2026 Social Security bend points used for everyone?
No. The $1,286 and $7,749 bend points apply to people first eligible in 2026. For retirement cases, first eligibility is generally the year a person reaches age 62; other eligibility years have different bend points.
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Not necessarily. PIA is the baseline associated with claiming at full retirement age before early- or delayed-claiming adjustments. Claiming age, COLAs, rounding, and possible deductions can affect the payment.
How can I compare different claiming dates?
Use SSA’s estimates for the dates you are considering, based on your earnings record. Compare the monthly estimates and keep the assumptions consistent. The applicable adjustment depends on birth year and claiming month, so a generic percentage may not represent your result.
The Bottom Line
Social Security turns indexed covered earnings—generally the highest 35 years—into AIME, then applies an eligibility-year-specific formula to calculate PIA. Your actual monthly payment can differ because of claiming age, COLAs, rounding, and applicable deductions. For a personal amount, check your SSA earnings record and compare estimates for the claim dates you are considering.
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