Social Security Benefit Estimator
↻ Updated 2026See how claiming Social Security early or late changes your monthly benefit — from a reduced amount at 62 to delayed-retirement credits up to age 70, relative to your Full Retirement Age benefit.
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Runs entirely in your browser — nothing you enter is sent to us.How this works
How to read your Social Security estimate
Everything on this page hangs off one input you have to bring with you: your benefit at Full Retirement Age. The calculator doesn't compute it — it can't, without your 35-year earnings record — it just applies SSA's published adjustment to whatever you enter. Get the FRA figure from your ssa.gov statement, or every number here is wrong in proportion.
How claiming age adjusts your Social Security benefit
Two different rules meet at 67. Claim before Full Retirement Age and your benefit is reduced by a fraction of a percent per month — but at two different rates, steeper for the first three years early. Claim after and you earn delayed retirement credits at a flat 8% a year until they stop dead at 70.
The kink is deliberate. SSA reduces by 5/9 of 1% per month for the first 36 months early and only 5/12 of 1% per month beyond that, which is why the penalty for the fifth year early is milder than for the first.
if claiming before 67: months early = (67 − claim age) × 12 reduction = min(months early, 36) × 5/9 of 1% + max(months early − 36, 0) × 5/12 of 1% factor = 1 − reduction if claiming after 67: factor = 1 + (min(claim age, 70) − 67) × 8% monthly benefit = FRA benefit × factor
- FRA benefit
- Your monthly benefit at Full Retirement Age, from ssa.gov — the one input the calculator can't derive — it's your primary insurance amount
- claim age
- When you start benefits, from 62 to 70 — the earliest and latest ages that change anything
- months early
- How many months before 67 you claim — 60 at age 62 — the maximum
- reduction
- The permanent cut for claiming before FRA — maxes out at 30% at age 62 (36 × 5/9% + 24 × 5/12%)
- factor
- Your benefit as a share of the FRA amount — ranges from 70% at 62 to 124% at 70
Full Retirement Age is 67 for anyone born in 1960 or later, and this calculator hardcodes that — if you were born earlier your FRA is somewhere between 66 and 67, and the reductions here will be slightly overstated. The delayed credit is a genuine cliff: it accrues at 8% a year up to 70 and then stops entirely, so claiming at 71 pays exactly what claiming at 70 pays, minus a year of checks. There is no version of the rules where waiting past 70 helps.
Worked examples
Example: a $2,000 FRA benefit across every claiming age
The calculator's default benefit, read straight off the chart. This is the entire decision on one line — the same earnings record, nine different answers.
| Age 6270% — the floor, 60 months early | $1,400 |
| Age 6480% — 36 months early | $1,600 |
| Age 6586.7% | $1,733 |
| Age 67 (FRA)100% — the reference point | $2,000 |
| Age 68108% — one year of delayed credits | $2,160 |
| Age 70124% — the ceiling | $2,480 |
| Spread, 62 to 70$12,960 a year, for life | $1,080/mo |
$1,400 versus $2,480 — the age-70 check is 77% larger than the age-62 one. Notice the asymmetry around FRA: three years early costs 20% while three years late gains 24%. The reduction and the credit are set by different rules, and the late side is the more generous of the two.
Example: the breakeven between claiming at 62 and at 70
Eight extra years of $1,400 checks against a permanently larger one. Both figures come straight off the chart above; the arithmetic is deliberately simple — no COLA, no interest, no tax.
| Head start from claiming at 6296 months × $1,400, collected before 70 | $134,400 |
| Monthly advantage of waiting$2,480 − $1,400 | $1,080 |
| Months to catch up$134,400 ÷ $1,080 | 124 |
| Breakeven age70 + 10.4 years | 80.4 |
| If you live to 90240 × $2,480 vs 336 × $1,400 — waiting wins | +$124,800 |
Roughly age 80 — before that, claiming at 62 is ahead on cumulative dollars; after it, waiting is. That's why longevity, not investment return, is the variable people actually argue about. Two honest caveats: ignoring what the early checks could have earned if invested pushes the breakeven later, while COLAs compounding on a larger base pull it earlier.
Frequently asked questions
Should I claim Social Security at 62 or 67?
The arithmetic says wait if you'll live past roughly 80, and claim early if you won't — on the calculator's defaults, the 62-versus-70 breakeven lands at 80.4. Nothing else about the numbers is close to that decisive.
What the arithmetic can't price is why people actually claim at 62. You may not be able to work; you may need the income now rather than more of it later; you may have a health history that makes the breakeven irrelevant. Married couples have a further wrinkle the calculator doesn't model at all: the higher earner's benefit sets the survivor benefit, so delaying that one protects whichever spouse lives longer. There's also an earnings test — claim before FRA while still working and benefits are withheld above an annual limit, though those withheld amounts are credited back at FRA (SSA, Retirement Age and Benefit Reduction).
How much does Social Security increase if you wait until 70?
24% above your FRA benefit — 8% a year for each of the three years from 67 to 70, or 2/3 of 1% per month. On the $2,000 default that's $2,480 a month rather than $2,000, an extra $5,760 a year for life (SSA, Delayed Retirement Credits).
Two details the headline hides. The credits stop at 70 with no exceptions, so there's nothing to gain by waiting longer — that's a hard ceiling, not a diminishing return. And the 8% is a simple annual increment, not compounding: three years is 24%, exactly, not 25.97%. Against claiming at 62 the gap is larger still, 77%, because you're stacking the removal of a 30% reduction on top of the 24% credit.
Is Social Security taxable in retirement?
It can be, and how much depends on a figure called combined income — your adjusted gross income, plus any tax-exempt interest, plus half of your annual benefits. Below a first threshold none of it is taxable; between the first and second, a portion becomes taxable; above the second, a larger portion does. The thresholds differ by filing status and are set out in IRS Publication 915. They are not indexed to inflation, which is why the share of retirees paying tax on benefits has risen for decades.
The structural point matters more than the arithmetic: withdrawals from traditional retirement accounts raise your AGI, which raises your combined income, which can drag more of your Social Security into the taxable column. That's a second, hidden cost of a large pre-tax balance — and one reason Roth conversions get discussed for the window between retirement and RMDs. A handful of states tax benefits too; most don't.
Will Social Security run out in 2033?
No — but benefits would be cut, and that distinction is the whole answer. Social Security is largely pay-as-you-go: today's payroll taxes fund today's checks. The trust fund is the buffer on top, and SSA's trustees project it depleted around 2033.
If Congress does nothing, incoming payroll tax would still cover roughly 77% of scheduled benefits — a cut of about 23%, not a stop. Every fix on the table involves some combination of higher payroll taxes, a higher wage base, a higher retirement age, or reduced benefits; the trustees' own solvency analysis catalogues the options. This calculator projects your scheduled benefit under current law and makes no adjustment for any of it.
What this Social Security estimator doesn't do
It applies one published adjustment to one number you supply. Everything that makes Social Security complicated sits outside that.
- It doesn't calculate your benefit — The FRA amount is an input, not an output. Your actual primary insurance amount comes from your highest 35 years of indexed earnings run through a progressive bend-point formula — none of which is implemented here. Take the figure from your ssa.gov statement.
- FRA is hardcoded at 67 — Correct for anyone born in 1960 or later. Born earlier and your FRA is between 66 and 67, so this tool overstates the reduction for claiming early and understates the delayed credits available to you.
- Whole years only — The slider moves in years, but the real rules work in months — claiming at 64 years and 7 months has its own factor. The formula this page implements would handle it; the interface doesn't offer it.
- No COLA, no tax, no earnings test — Benefits get an annual cost-of-living adjustment; the numbers here are level. They may be partly taxable depending on combined income (IRS Publication 915). And claiming before FRA while still working triggers an earnings test that withholds benefits above an annual limit.
- Nothing about spouses or survivors — Spousal, survivor and divorced-spouse benefits are entirely absent, and for married couples they often dominate the claiming decision — the higher earner's benefit becomes the survivor benefit, which changes what delaying is worth.
Rates, brackets and limits here are checked against primary sources. If a number still looks off, email support@realmoneyiq.com and we'll review and fix it.
RealMoneyIQ provides free educational calculators, not financial, tax, investment or legal advice. Results are estimates based on the assumptions you enter and publicly published rates; your actual outcome will differ. Always confirm decisions with a licensed professional who knows your full situation.