Your 35 highest-earning years
Social Security averages your top 35 years of taxed earnings. Fewer than 35 years means zeros get averaged in, which pulls the benefit down.
Retirement planning
How is Social Security calculated?
Your benefit comes from your 35 highest-earning years, and the age you claim can raise or lower the monthly amount for life. Here is what moves the number — and how to see your own estimate inside a full retirement plan.
What decides your benefit
The Social Security Administration runs a specific formula, but these are the inputs that matter most.
The age you claim
You can claim as early as 62, but the monthly amount is reduced. Waiting past your full retirement age raises it, up to age 70. The difference is permanent.
Career gaps and part-time years
Years out of the workforce or at lower pay lower your average. Estimating from today's salary alone can overstate what you'll actually receive.
Your SSA statement
The most accurate starting point is your official statement at ssa.gov. Finnlight lets you enter that figure directly instead of estimating.
How it fits with everything else
A benefit on its own doesn't tell you when you can retire. It matters most alongside your savings, spending, and the years before Medicare.
Cost-of-living adjustments
Benefits rise with inflation most years. Finnlight shows your plan in today's dollars so the numbers stay meaningful without extra math.
How Finnlight estimates it for you
Finnlight builds your Social Security estimate into a year-by-year retirement projection, so you see the benefit in context — not as a standalone number.
- Estimate from your income, or enter your SSA statement figure for accuracy.
- Try claiming at 62, full retirement age, or 70 and see the trade-off instantly.
- See how the benefit combines with your savings to cover your spending.
- Ask Finn what-ifs like “What if I claim at 62 and work part-time?”
- Start free — no account or card needed to try it.
See your benefit in your full plan
Start a plan with your numbers and see how Social Security changes your retirement date. Finnlight is an educational planning tool and does not provide financial, tax, or legal advice.