The Basic Formula: Your 35 Highest-Earning Years

Social Security takes your earnings record from your entire working life, finds your 35 highest-earning years, and averages them together. That average becomes the foundation of your monthly benefit. If you worked fewer than 35 years, the formula includes zeros for the missing years, which lowers your average. The Social Security Administration (SSA) adjusts all your past earnings to account for wage inflation, so earnings from 1985 are not compared dollar-for-dollar against earnings from 2023.

Once the SSA calculates your average monthly earnings, it applies a bend point formula — a three-part calculation that replaces a higher percentage of lower earnings than higher earnings. This is why someone who earned $20,000 a year receives a larger percentage of their income as a benefit than someone who earned $150,000 a year. The bend points themselves change each year based on national wage trends.

Key Takeaways

  • Your benefit is based on your 35 highest-earning years; years with no earnings count as zeros and reduce your average.
  • The SSA adjusts past earnings for inflation so that wages from different decades can be compared fairly.
  • A bend point formula replaces a higher percentage of lower earnings than higher earnings, creating a progressive benefit structure.
  • Claiming before your full retirement age permanently reduces your monthly benefit; claiming after increases it.
  • Your spouse or ex-spouse may receive a benefit based on your record, which does not reduce your own payment.

How the Bend Point Formula Works

After the SSA calculates your average indexed monthly earnings (AIME), it applies three separate percentages to three separate income bands. For 2024, the formula works roughly like this: 90 percent of the first $1,174 of your AIME, plus 32 percent of earnings between $1,174 and $7,078, plus 15 percent of earnings above $7,078. These dollar amounts (called bend points) change every January.

The result is your primary insurance amount (PIA) — the benefit you receive at your full retirement age. If your AIME is $2,000, you would receive 90 percent of $1,174 ($1,056.60), plus 32 percent of the remaining $826 ($264.32), for a total PIA of $1,320.92. Someone with an AIME of $5,000 would receive $1,056.60 plus 32 percent of $5,826 ($1,864.32), plus 15 percent of zero, for a total of $2,920.92 — a higher absolute amount, but a lower percentage of their earnings.

What Counts as Earnings for Social Security

Social Security counts covered wages — money you earned as an employee or self-employed person and paid Social Security taxes on. This includes W-2 wages, self-employment income, and certain military service credits. It does not include investment income, rental income, pensions from non-covered work, or benefits from other programs.

If you worked for a government employer (such as a city, state, or federal agency) and did not pay Social Security taxes on that income, those years do not appear in your earnings record. Some government employees have a Government Pension Offset or Windfall Elimination Provision that reduces their Social Security benefit if they also receive a pension from non-covered work — these are separate rules that modify the basic calculation.

How Your Claiming Age Changes Your Benefit

Your full retirement age depends on your birth year. For people born in 1960 or later, it is 67. You can claim as early as 62, but doing so permanently reduces your benefit by roughly 30 percent. You can also delay claiming until age 70, which increases your benefit by roughly 24 percent per year of delay.

The SSA calculates these adjustments as a percentage of your PIA. If your PIA is $1,500 and you claim at 62, you might receive around $1,050 per month for life. If you claim at 67, you receive $1,500. If you claim at 70, you might receive around $1,860. These percentages are fixed by law and do not change based on how long you live.

Spousal and Ex-Spousal Benefits Based on Your Record

Your spouse can receive a benefit based on your earnings record if they are at least 62 years old (or any age if they are caring for your child under 16). The maximum spousal benefit is 50 percent of your PIA if the spouse claims at their full retirement age. An ex-spouse can also receive a benefit on your record if the marriage lasted at least 10 years, you are both at least 62, and you have been divorced for at least two years (or any length of time if your ex is already receiving benefits).

Importantly, a spouse's or ex-spouse's benefit does not reduce your own payment. The SSA pays them from a separate pool. However, if your spouse also has their own earnings record, the SSA calculates both a benefit on their own record and a benefit on yours, then pays the higher of the two (not both).

How Work After Claiming Affects Your Benefit

If you claim before your full retirement age and continue to work, the SSA reduces your benefit by $1 for every $2 you earn above an annual limit (for 2024, that limit is $23,400, but it changes yearly). Once you reach your full retirement age, there is no earnings limit — you can work and receive your full benefit.

If you earn enough to trigger the earnings test and your benefit is reduced, the SSA does not simply subtract money from your account. Instead, it recalculates your benefit at your full retirement age to account for the months you did not receive a payment. This means the reduction is temporary, and your benefit increases later to make up for the months you were not paid.

Frequently Asked Questions

Does my spouse's income affect my Social Security benefit?

No. Your benefit is based only on your own earnings record. Your spouse's income, savings, or other benefits do not change the amount you receive. However, if your spouse also worked and has their own Social Security record, they will receive a benefit based on their own earnings, not yours.

What happens to my benefit if I did not work for 35 years?

The SSA includes zeros for any years you did not work (up to 35 years total). These zeros lower your average earnings and reduce your benefit. If you worked only 30 years, five zeros are included in the calculation. Working longer can replace those zeros with actual earnings and increase your benefit.

Can I see my actual benefit calculation before I claim?

Yes. You can create a my Social Security account at ssa.gov to view your earnings record and see an estimate of your benefit at different claiming ages. The SSA also mails a Social Security Statement to people who do not have an online account, though you can request one anytime.

Does my benefit change after I start receiving it?

Your benefit increases each year by a cost-of-living adjustment (COLA) if inflation has occurred. The SSA announces the COLA in October for the following year. Your benefit does not change based on how much money you have in the bank or other assets, but it may be reduced if you work before reaching full retirement age.

How does the bend point formula affect high earners differently than low earners?

The bend point formula replaces 90 percent of the first portion of your earnings but only 15 percent of higher earnings. This means a low earner receives a larger percentage of their lifetime income as a benefit, while a high earner receives a smaller percentage. Both receive higher absolute dollar amounts, but the replacement rate is progressive.