Your benefit amount depends on your earnings history and the age you start collecting

Social Security calculates your monthly benefit using three pieces of information: how much you earned during your working years, how many years you worked, and what age you claim benefits. The system does not look at your current income or savings — only your past earnings record. The older you are when you start, the larger your monthly check will be, but you will collect for fewer years. The younger you start, the smaller each check is, but you collect for longer.

The Social Security Administration (SSA) uses a specific formula that adjusts your historical earnings for inflation, counts your highest 35 years of work, and then applies a bend-point calculation that replaces a higher percentage of lower earnings than higher earnings. This is why two people with the same career length but different income histories receive different amounts.

Key Takeaways

  • Your benefit is based on your 35 highest-earning years; if you worked fewer than 35 years, zeros are counted for the missing years, which lowers your benefit.
  • Earnings are adjusted for inflation using a national wage index, so your 1990 income is not compared directly to your 2020 income.
  • The bend-point formula replaces 90 percent of your first $1,174 in average monthly earnings, 32 percent of earnings between $1,174 and $7,078, and 15 percent of earnings above $7,078 (these dollar amounts change yearly).
  • Claiming at age 62 gives you roughly 70 percent of your full retirement age benefit; waiting until age 70 gives you roughly 124 percent.
  • You can view your own earnings record and estimated benefit amount on your Social Security account at ssa.gov.

How the SSA counts your working years

Social Security looks back at your entire work history and selects your 35 highest-earning years. If you worked 40 years, the five lowest-earning years are dropped. If you worked only 20 years, the system counts 15 years of zero earnings, which significantly reduces your average.

A year counts as a working year only if you earned enough to receive a Social Security credit for it. In 2024, you earn one credit for every $1,730 in wages (the amount changes yearly). You can earn up to four credits per year, so you need $6,920 in annual earnings to max out credits for that year. The SSA uses credits to determine whether you have worked long enough to receive benefits at all — you typically need 40 credits total, which is roughly 10 years of work — but for calculating your benefit amount, the system uses your actual earnings, not just the number of credits.

If you took time out of the workforce for caregiving, illness, or unemployment, those years count as zeros in your calculation. There is no exception for these gaps; they pull down your average earnings and therefore your benefit. This is why people who left the workforce for several years often receive smaller benefits than those with continuous work histories.

The wage indexing adjustment for inflation

The SSA does not compare your 1985 earnings directly to your 2020 earnings. Instead, it adjusts all your historical earnings using a national wage index to account for inflation and wage growth. This means your earlier, lower-dollar earnings are scaled up to reflect what they would be worth in today's economy.

The SSA applies the wage index up to the year you turn 60. After that, your actual earnings are used without further adjustment. This protects workers who had lower wages early in their careers but higher wages near retirement — the early wages are boosted by the index, so they count more fairly in the calculation.

The wage index is published each year by the SSA and is based on total wages paid in the United States. You do not need to calculate this yourself; the SSA does it when they compute your benefit estimate.

Understanding the bend-point formula

Once the SSA has adjusted your earnings for inflation and calculated your average indexed monthly earnings (AIME), they explore the bend-point formula. This formula is progressive — it replaces a higher percentage of low earnings than high earnings, which means lower-income workers receive a larger percentage of their pre-retirement income as a benefit.

The formula has two "bend points" — dollar thresholds where the replacement rate changes. In 2024, the bend points are $1,174 and $7,078 (these change yearly). The formula works like this: you receive 90 percent of your AIME up to $1,174, plus 32 percent of AIME between $1,174 and $7,078, plus 15 percent of AIME above $7,078.

Here is a concrete example: if your AIME is $3,000, you would receive (90% × $1,174) + (32% × $1,826) + (15% × $0) = $1,056.60 + $584.32 + $0 = $1,640.92 per month. If your AIME were $6,000, you would receive (90% × $1,174) + (32% × $5,826) + (15% × $0) = $1,056.60 + $1,864.32 + $0 = $2,920.92 per month. Notice that the second person's AIME is double the first person's, but their benefit is less than double — that is the progressive structure at work.

How your claiming age affects your monthly amount

The age at which you claim benefits directly changes your monthly payment. The SSA defines your full retirement age based on your birth year. For people born in 1960 or later, full retirement age is 67. At that age, you receive your full benefit amount as calculated by the formula above.

If you claim at 62 (the earliest age), your benefit is reduced by roughly 30 percent. If you claim at 70 (the latest age to receive delayed retirement credits), your benefit is increased by roughly 24 percent. The exact percentages depend on your birth year, but the pattern is consistent: each year you delay claiming between 62 and 70 increases your monthly benefit by roughly 8 percent.

This creates a trade-off. Claiming early means smaller monthly checks but you start collecting sooner. Claiming late means larger monthly checks but you start later. The break-even point — where total lifetime benefits are roughly equal — is around age 80 to 82 for most people, though this varies based on individual health and longevity expectations.

Earnings after you start collecting

If you claim Social Security before your full retirement age and continue working, the SSA reduces your benefits based on your earnings. In 2024, your benefit is reduced by $1 for every $2 you earn above $23,400 (this limit changes yearly). Once you reach full retirement age, there is no earnings limit — you can work and collect your full benefit.

This earnings test applies only to benefits you receive before full retirement age. Spousal benefits and survivor benefits have their own rules. The reduction is temporary; once you reach full retirement age, your benefit is recalculated to account for the months you did not receive a payment, so you do not lose that money permanently.

How to find your own benefit calculation

You can view your Social Security earnings record and get an estimate of your future benefit by creating an account at ssa.gov. The SSA calls this your "my Social Security" account. You will need your Social Security number, email address, and a way to verify your identity (usually a phone number or address on file).

Your account shows your year-by-year earnings history as the SSA has it on record. If you spot an error — a missing year, an employer name that is wrong, or earnings that look incorrect — you can report it to the SSA. Corrections must usually be made within three years, three months, and 15 days of the year the earnings were reported, so it is worth checking your record periodically, especially early in your career.

The benefit estimate in your account assumes you continue working at your current pace until your full retirement age. If your earnings are likely to change — if you are about to retire, take a lower-paying job, or stop working — the estimate will not reflect that. You can adjust the estimate manually in your account to see how different earnings scenarios would affect your benefit.

Frequently Asked Questions

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

No. Your own benefit is based only on your own earnings record. However, if you are married, you may be may have access to to a spousal benefit based on your spouse's earnings record, which is calculated separately. Spousal benefits have their own rules and are typically smaller than your own benefit.

What happens to my benefit if I did not work for 10 years?

Those 10 years count as zeros in your 35-year average. If you worked 25 years total, the SSA counts 10 years of zero earnings, which lowers your average indexed monthly earnings and therefore your benefit. Working additional years later can replace some of those zeros if your later earnings are higher than your lowest 35 years.

Can I see how much my benefit would be if I claimed at 62 versus 70?

Yes. Your my Social Security account shows your estimated benefit at full retirement age. You can manually adjust the age in the estimate tool to see how claiming earlier or later would change your monthly amount. The SSA also sends benefit estimates by mail if you do not have an online account.

Does the bend-point formula change every year?

The dollar amounts at the bend points change yearly based on national wage growth. The percentages (90 percent, 32 percent, and 15 percent) do not change. This means the formula stays progressive, but the income thresholds shift to reflect wage increases.

If I worked in multiple countries, does that count toward Social Security?

Only earnings covered by the U.S. Social Security system count. If you worked in another country and paid into that country's system, you may be may have access to to benefits from that country, and the U.S. has agreements with some countries to coordinate benefits. Contact the SSA or the other country's social security office for details.