Social Security Calculator

Suppose your Average Indexed Monthly Earnings (AIME) work out to $5,000. Using the 2025 formula, your Primary Insurance Amount comes to about $2,311 a month - that is 90% of the first $1,226 ($1,103), plus 32% of the next $3,774 ($1,208). If you claim that benefit at your Full Retirement Age of 67 you get the full $2,311. Start at 62 instead and it drops roughly 30% to about $1,618; wait until 70 and it rises 24% to about $2,866. That spread - more than $1,200 a month between the earliest and latest start - is the single most important decision this Social Security calculator helps you think through.

The benefit formula

Social Security pays a progressive benefit: it replaces a much larger share of income for lower earners than for higher earners. The Primary Insurance Amount (PIA) is built from your AIME in three slices using the 2025 bend points:

The result is your benefit at Full Retirement Age. It is then multiplied by a claiming-age factor: reduced if you start before 67, increased if you wait. The $1,226 and $7,391 figures are the bend points for people first eligible in 2025; they rise a little most years with national wage growth.

What AIME means

AIME is your Average Indexed Monthly Earnings. Social Security takes the 35 years in which you earned the most, adjusts (indexes) each year's earnings for wage inflation so old dollars are comparable to recent ones, adds them up, and divides by 420 (35 years × 12 months). If you worked fewer than 35 years, zeros fill the gaps, which pulls your average down. Only earnings up to the annual taxable maximum count, so very high salaries are capped.

How to use this calculator

You only need two inputs to get a realistic estimate:

1. Enter your AIME. If you have your Social Security statement, use the AIME or the listed PIA. If not, a reasonable starting point is your average gross monthly earnings over your career; the quick-fill buttons cover common ranges.
2. Pick a claiming age from 62 to 70. Age 67 is Full Retirement Age and gives you 100% of your PIA. The field shows the percentage adjustment versus 67 as you change it.
3. Press "Estimate my benefit." Read the headline monthly figure, then review the PIA bracket breakdown to see how each slice of your earnings contributes.
4. Scan the comparison table to see your benefit at every claiming age side by side, in both monthly and annual dollars, with your selected age highlighted.

Try a few AIME values and claiming ages. You will quickly see how progressive the formula is and how much the start age matters. Once you have a monthly figure, drop it into the Retirement Calculator to check whether Social Security plus your savings actually covers your target income.

Who this calculator is for

This tool is for anyone trying to turn a fuzzy idea of "my Social Security" into a concrete monthly number. That includes:

• Pre-retirees in their 50s and early 60s deciding when to claim.
• Mid-career workers sanity-checking how much Social Security will replace so they know how much to save on top of it.
• Couples coordinating two claiming dates to maximize lifetime and survivor benefits.
• Anyone comparing offers - for example, weighing an early pension or buyout against waiting for a larger Social Security check.
• Curious savers who simply want to understand how the benefit formula and bend points work.

Key Social Security terms

• PIA (Primary Insurance Amount): your benefit at Full Retirement Age, before any early-claiming reduction or delayed credit.
• AIME (Average Indexed Monthly Earnings): the wage-indexed average of your 35 highest-earning years, the input the PIA formula works on.
• FRA (Full Retirement Age): 67 for anyone born in 1960 or later; the age you receive 100% of your PIA.
• Bend points: the AIME thresholds ($1,226 and $7,391 in 2025) where the 90% / 32% / 15% formula rates change.
• Delayed-retirement credits: the 8%-per-year increase for claiming after FRA, up to age 70 (+24% total).
• COLA (cost-of-living adjustment): the annual inflation increase applied to benefits already in payment.

Scenario 1: a long career, average earnings

Maria has an AIME of $6,000. Her PIA is roughly $2,631 at 67 (90% of $1,226 plus 32% of the remaining $4,774). If she retires at 62 the benefit falls to about $1,842; if she waits to 70 it climbs to about $3,263. Maria is healthy with a family history of longevity, so delaying toward 70 to lock in the larger lifetime check is worth considering.

Scenario 2: a higher earner above the second bend point

James has an AIME of $9,000, which is above the upper bend point. His PIA is about $3,318: 90% of $1,226 ($1,103), plus 32% of $6,165 ($1,973), plus 15% of the $1,609 over $7,391 ($241). Notice how little the top slice adds - just 15 cents per dollar - which is why high earners get a smaller percentage of their pay back from Social Security and why other retirement savings matter more for them. James leans on a 401(k) and a Roth IRA to fill the gap that Social Security leaves above the second bend point.

Scenario 3: claiming early to bridge a gap

Dana, AIME $4,000, has a PIA around $1,991. She is laid off at 62 and needs income now. Claiming at 62 gives about $1,394 a month for life - permanently lower, but it bridges the years until her other savings and a small pension kick in. The calculator's table lets her see exactly what each year of waiting would have added, so she can make the trade-off with eyes open.

What changes the result the most

• Your AIME: the biggest driver, but with diminishing returns - dollars above the second bend point add only 15 cents each to your PIA.
• Claiming age: moving from 62 to 70 raises the monthly check by roughly 77%, the largest lever you fully control.
• Years worked: filling in low or zero years among your top 35 raises your AIME and therefore your PIA.
• Wage indexing: the bend points and indexing factors update yearly, so the same career produces slightly different numbers depending on your eligibility year.

Tips to get the most from Social Security

• Check your earnings record at ssa.gov for errors - missing or understated years lower your benefit.
• Work at least 35 years when you can, so zeros are not averaged into your AIME.
• Consider delaying if you are healthy and can afford to wait; each year past 67 adds 8% for life.
• Coordinate as a couple - often the higher earner delays to maximize the survivor benefit, while the lower earner claims earlier.
• Mind the earnings test if you plan to keep working before FRA.

The break-even age: when waiting pays off

The most useful way to read the comparison table is to find your break-even age - the age at which the larger checks from waiting finally add up to more total dollars than the smaller checks you would have collected by starting early. Take a $2,000 PIA. Claiming at 62 gives roughly $1,400 a month; waiting to 67 gives the full $2,000, a difference of $600 a month. By starting at 62 you collect five extra years of checks (about $84,000) before the FRA claimant gets a dollar - so the higher benefit has to close an $84,000 head start at $600 a month, which takes about 11 to 12 years. That puts the break-even point in the late 70s to early 80s. If you expect to live past your early 80s, waiting wins on lifetime dollars; if not, claiming early does. Because no one knows their lifespan, treat this as a risk decision, not a math puzzle: delaying is essentially insurance against living a long time and running short, while claiming early is insurance against the opposite. The same longevity question drives how aggressively you can spend other accounts, which is what the Retirement Withdrawal Calculator helps you test.

Taxes, spousal and survivor benefits

This calculator shows your gross retirement benefit, but two things outside the core formula often change what a household actually keeps. First, Social Security can be taxable: depending on your "combined income" (adjusted gross income, plus tax-exempt interest, plus half of your benefits), up to 50% or up to 85% of your benefit can be subject to federal income tax. Many retirees with pensions, large withdrawals, or part-time wages cross those thresholds - so model your other income with the Income Tax Calculator before assuming the headline figure here is take-home. Second, spousal benefits let a lower-earning spouse receive up to 50% of the higher earner's PIA at full retirement age if that exceeds their own benefit, and survivor benefits let a widow or widower step up to roughly 100% of what the deceased was receiving. This is the strongest argument for the higher earner in a couple to delay: a bigger PIA does not just raise their own check, it raises the survivor benefit the longer-living spouse may collect for years. None of these adjustments are modeled here - use this tool for the base benefit, then layer the household rules on top.

Why the bend points shift each year

The $1,226 and $7,391 bend points are not fixed in law as dollar amounts - they are recalculated every year from the national Average Wage Index, so they creep upward as wages rise. The bend points that apply to you are the ones in effect for the year you turn 62 (your "year of eligibility"), even if you claim later. That is why two people with identical careers but different birth years can see slightly different PIAs: the formula brackets moved between their eligibility years. The annual cost-of-living adjustment (COLA) works differently - it is applied to benefits already being paid, tied to inflation rather than wages, and does not change your underlying PIA calculation. Because this tool uses the 2025 bend points, it is most accurate for people becoming eligible around now; if your year of eligibility is several years out, treat the result as today's-dollars estimate and expect the actual brackets to be a little higher.

Limitations and assumptions

This is a planning estimate, not an official projection. Keep these assumptions in mind:

• It uses a single AIME figure you supply rather than your full year-by-year indexed earnings.
• It applies the 2025 bend points and an FRA of 67; people with an earlier FRA or a different eligibility year will see slightly different numbers.
• It does not include COLAs, so figures are in today's dollars.
• It excludes spousal, survivor, disability, and dependent benefits, the earnings test, and federal income tax on benefits.
• Early-claiming reductions use the standard ~6.67%/year (first three years) and 5%/year (beyond) rates; the official monthly proration may differ by a few dollars.

How it compares to related calculators

Social Security is usually one leg of a three-legged retirement stool. If you have a different question, a sister tool fits better:

• To see whether your savings plus Social Security cover your goal, use the Retirement Calculator.
• To project an employer plan with matching, use the 401(k) Calculator.
• To estimate tax-free growth, use the Roth IRA Calculator.
• To model lump-sum and recurring investments, use the Investment Calculator.
• To understand how money grows over time, use the Compound Interest Calculator.
• To plan how fast you can safely draw down savings alongside your benefit, use the Retirement Withdrawal Calculator, and to see how rising prices erode a fixed check, the Inflation Calculator.

Sources

• Social Security Administration - Primary Insurance Amount and bend points.
• Social Security Administration - Early or late retirement (claiming-age adjustments).
• Social Security Administration - AIME and benefit computation.
• Social Security Administration - my Social Security (personalized statement).