How This Calculator Works
This calculator estimates your Social Security retirement benefit using the same method the Social Security Administration (SSA) uses, simplified for education. It builds a year-by-year earnings history from your current income, indexes those earnings to today's wage levels, and applies the official benefit formula.
Step 1: Your Earnings History
Social Security looks at your entire working career, not just your final salary. This calculator estimates each year's earnings from your current income: past years are scaled down using national wage growth, and future years grow at your expected annual raise. Average U.S. wages grow about 3.5% a year, so a 3.5% raise keeps you at the same level relative to everyone else. If you know what you actually earned in a specific year, expand Fine-tune your earnings and enter it — your real numbers always beat the estimate.
Each year's earnings are capped at that year's Social Security taxable maximum (the "wage base"), because income above the cap is neither taxed for Social Security nor counted toward your benefit.
Step 2: Indexing and Your Top 35 Years
The SSA adjusts ("indexes") your past earnings to reflect wage growth, so a $30,000 salary from 2002 counts for much more than $30,000 today. It then takes your highest 35 years of indexed earnings and averages them into a monthly figure called the AIME (Average Indexed Monthly Earnings).
This is why years worked matter: if you worked fewer than 35 years, the missing years count as zeros and pull your average down. Working longer can replace low-earning early years with higher-earning recent ones.
To qualify at all, you need 40 work credits. You can earn up to four a year, and it takes only modest earnings to get all four, so about 10 years of work is enough.
Step 3: The Benefit Formula
Your AIME is run through a progressive formula with two "bend points." For someone becoming eligible in 2026, roughly:
- 90% of the first portion of your AIME
- 32% of the middle portion
- 15% of anything above the second bend point
The result is your Primary Insurance Amount (PIA) — the monthly benefit you would receive at your full retirement age (67 for anyone born in 1960 or later).
Step 4: When You Claim Changes Everything
You can claim as early as 62 or as late as 70:
- Claiming early permanently reduces your check — about 30% less at 62 if your full retirement age is 67.
- Claiming late earns delayed retirement credits of 8% per year, up to a 24% boost at 70.
The chart shows your estimated monthly benefit at every claiming age so you can see the trade-off directly.
Assumptions and Limitations
- Results are shown in today's dollars. Future cost-of-living adjustments (COLAs) are not added, so the number is directly comparable to today's paychecks. If you're already 62 or older, the COLAs you've earned since 62 are included.
- Claiming at 62 assumes 62 and one month, the first month most people can start benefits.
- Estimated earnings assume your income followed national wage growth in the past and grows at your expected raise going forward.
- The calculator uses current-law bend points, wage bases, and full retirement ages. Congress can change the law.
- Spousal, survivor, and disability benefits, the earnings test for working while claiming, and taxation of benefits are not modeled.
This is an educational tool, not financial advice and not an SSA statement. For your official earnings record and estimate, create an account at ssa.gov/myaccount.