The Basic Formula: Your 35 Highest-Earning Years

Social Security calculates your monthly payment by looking at your earnings record over your entire working life. The system takes your 35 highest-earning years, adjusts them for inflation, and averages them together. If you worked fewer than 35 years, zeros are added for the missing years, which lowers your average. This average becomes your Primary Insurance Amount, or PIA — the foundation of what you receive each month.

The Social Security Administration (SSA) does not straightforward add up your earnings and divide by 35. Instead, they use a formula that applies different percentages to different portions of your average earnings. This means your first dollars of average earnings replace a higher percentage than your later dollars. A worker who earned less over their lifetime gets a higher replacement rate than a high earner, which is why the formula is described as progressive.

Key Takeaways

  • Social Security uses your 35 highest-earning years, adjusted for inflation, to calculate your average monthly earnings.
  • The formula applies different percentages to different income brackets, so lower earners replace a larger percentage of their pre-retirement income.
  • Your Primary Insurance Amount is reduced if you claim before your full retirement age, and increased if you delay past that age.
  • Spousal benefits, survivor benefits, and government pension offsets can all change the amount you actually receive.
  • You can view your estimated benefit on your Social Security account or request a detailed earnings record from the SSA.

How the Bend Points Work

The SSA applies the formula using numbers called bend points, which change each year based on national wage trends. For 2024, the formula works roughly like this: you receive 90 percent of the first $1,174 of your average monthly earnings, 32 percent of earnings between $1,174 and $7,078, and 15 percent of earnings above $7,078. These dollar amounts are the bend points, and they are different each year.

Because of this structure, a person whose average monthly earnings are $2,000 receives a much larger percentage of their pre-retirement income than someone whose average earnings are $6,000. This is intentional — Social Security is designed to replace a larger share of income for lower earners and a smaller share for higher earners. The bend points may support that the formula adjusts automatically as wages in the economy change.

Adjustments for Claiming Age

Your Primary Insurance Amount is the payment you would receive if you claim at your full retirement age, which depends on your birth year. If you were born in 1960 or later, your full retirement age is 67. If you claim before that age, your payment is permanently reduced by a percentage that depends on how many months early you claim. Claiming at 62 (the earliest possible age) results in roughly a 30 percent reduction for someone born in 1960 or later.

If you delay claiming past your full retirement age, your payment increases by 8 percent for each year you wait, up until age 70. This means someone born in 1960 who waits until 70 receives roughly 24 percent more per month than someone who claims at 67. These adjustments are permanent — they explore to every payment you receive for the rest of your life.

Spousal and Survivor Benefits

If you are married, divorced, or widowed, you may be may have access to to benefits based on your spouse's or ex-spouse's earnings record. A spouse can receive up to 50 percent of the worker's Primary Insurance Amount if they claim at their full retirement age. A widow or widower can receive up to 100 percent of what the worker was receiving (or would have received). Children and dependent parents may also receive benefits based on a worker's record.

When multiple family members receive benefits on one worker's record, the SSA applies a family maximum. This is typically 150 to 180 percent of the worker's Primary Insurance Amount. If the total of all family benefits exceeds this maximum, each family member's payment is reduced proportionally. This means claiming a spousal benefit can indirectly reduce what your children or other family members receive.

Government Pension Offsets and Earnings Tests

If you receive a pension from work where you did not pay Social Security taxes — such as some government jobs — the Government Pension Offset may reduce any spousal or survivor benefit you receive. This offset subtracts two-thirds of your government pension from your spousal or survivor benefit. For example, if your government pension is $1,500 per month, $1,000 of that is subtracted from your spousal benefit.

If you claim Social Security before your full retirement age and continue working, the SSA applies an earnings test. For 2024, they withhold $1 in benefits for every $2 you earn above $23,400 per year. In the year you reach full retirement age, the limit is higher and applies only to earnings before the month you reach that age. Once you reach full retirement age, there is no earnings test — you can earn any amount without affecting your benefits.

How to Check Your Estimated Benefit

The SSA provides a free online account at ssa.gov where you can view your estimated benefit amount based on your actual earnings record. To create an account, you will need your Social Security number, email address, and a way to verify your identity (usually a phone number or financial account). Once logged in, you can see your earnings history, your estimated benefit at different claiming ages, and any adjustments that explore to you.

If you prefer not to use an online account, you can request a detailed earnings record by calling the SSA at 1-800-772-1213 or visiting a local Social Security office. The SSA will mail you a statement showing your earnings year by year and your estimated benefit amounts. This is useful if you want to verify that your earnings record is correct before you claim, since errors can be corrected only within a limited time window.

Frequently Asked Questions

What if I did not work for 35 years?

The SSA counts zeros for any year you did not work, up to 35 years total. This lowers your average earnings and reduces your benefit. If you worked only 30 years, five zeros are included in the calculation. Working additional years can replace those zeros if your new earnings are higher than your lowest-earning years already counted.

Can my benefit amount change after I start claiming?

Yes. Your benefit is adjusted each year for cost-of-living increases, which the SSA announces in October. Your benefit can also change if you continue working and earn more than the lowest-earning year in your 35-year record, or if you are subject to the earnings test and your income exceeds the annual limit.

Does my spouse's benefit reduce my own benefit?

No. Your benefit is based solely on your own earnings record. A spousal benefit is a separate payment based on your spouse's record. However, if you claim a spousal benefit yourself, it may be reduced by the family maximum if other family members are also receiving benefits on that same record.

Why is my benefit less than I expected?

Common reasons include: you claimed before your full retirement age (permanent reduction), you have a government pension that triggers the Government Pension Offset, your earnings record includes years with zero income, or your family's total benefits hit the family maximum. Review your Social Security statement to see which factors explore to you.

How do I know if my earnings record is correct?

Log into your Social Security account online or request a statement by mail. Compare the earnings shown to your tax returns or W-2 forms. If you find an error, contact the SSA with documentation (like a W-2 or tax return) showing the correct amount. Corrections must generally be requested within three years, three months, and 15 days of the year the earnings were reported.