Social Security is the foundation of most retirement plans, yet people routinely leave it out of their math — and then overestimate how much they need to save. This tool puts it where it belongs: as guaranteed monthly income that offsets your spending, so your savings only have to fund the rest.
It isn’t a benefit estimator (that needs your full earnings history from ssa.gov). Instead, enter your estimated monthly benefit as “other monthly income,” and see exactly how much lighter the load on your own savings becomes.
How Social Security changes the math
Every dollar of Social Security is a dollar your portfolio doesn’t have to produce. If you want to spend $55,000 a year and Social Security provides $24,000, your savings only need to cover the remaining $31,000 — and at a 4% withdrawal rate that’s roughly a $775,000 nest egg instead of nearly $1.4 million. Guaranteed income does enormous work.
Because the benefit is inflation-adjusted and lasts for life, it also reduces your exposure to market downturns and longevity risk. The more of your spending it covers, the more resilient your plan.
When should you claim?
You can claim as early as 62, but your monthly check is permanently reduced; wait until your full retirement age (66–67 for most people today) for the full amount, or delay to 70 for roughly 8% more per year you wait. For many, delaying buys the cheapest inflation-protected lifetime income available.
The right age depends on your health, other savings, and whether you need the income sooner. Try raising the retirement age and the “other monthly income” above to see how a larger, later benefit reshapes the verdict.
Getting your real number
For an accurate benefit, create an account at ssa.gov and read your estimate at different claiming ages — it’s based on your actual earnings record. The U.S. average retired-worker benefit is around $1,900 a month, but yours could be meaningfully higher or lower.
Once you have it, plug it in here to see the whole picture: how much of your spending it covers, and the exact savings you still need to close any gap.
Frequently asked questions
How much Social Security will I get?
It depends on your earnings history and the age you claim. The average retired-worker benefit is around $1,900 a month, but the most accurate figure is your personalized estimate at ssa.gov. Enter it above to see how it fits your plan.
Does Social Security reduce how much I need to save?
Significantly. It offsets your spending directly, so your savings only have to cover what’s left. A $24,000-a-year benefit can cut the nest egg you need by hundreds of thousands of dollars.
When should I claim Social Security?
Claiming at 62 reduces your benefit permanently; waiting to full retirement age gives the full amount, and delaying to 70 adds roughly 8% per year. Delaying is often the best-value lifetime income if you can bridge the gap from savings.
Is this an official Social Security estimate?
No — for your exact benefit, use ssa.gov, which has your earnings record. This calculator shows how whatever benefit you enter changes your overall retirement readiness.
Worked examples
Each scenario below is computed by the same retirement engine that powers the interactive calculator above — no hand-typed numbers.
Standard retirement — SS at 67
Age 45 with $200,000 saved, $800/month contribution, retiring at 67 with $2,200/month Social Security at full retirement age.
Projected nest egg
$1,428,470
Required (today's $)
$724,386
Funded ratio
103%
Monthly income
$4,685/mo
$2,200/month in Social Security covers $26,400/year of spending, reducing the portfolio requirement by $660,000 at a 4% SWR — a massive impact on funding status.
Early SS claim at 62 vs delayed to 70
Same saver, but modeling $1,550/month if claiming at 62 (reduced benefit) vs $0 other income to show impact on portfolio need.
Projected nest egg
$967,248
Required (today's $)
$1,014,263
Funded ratio
58%
Monthly income
$3,501/mo
Claiming Social Security at 62 versus 70 can differ by 77% in monthly benefit, but the early claim also means the portfolio starts drawdown much sooner — a dual risk.
More retirement questions
How much Social Security will I receive?
The amount depends on your lifetime earnings record and the age you claim. Create a free account at ssa.gov/myaccount to see your personalized estimate. As a rough guide, the average Social Security benefit in 2024 is about $1,900/month; the maximum at full retirement age is about $3,800/month for high earners.
Does Social Security adjust for inflation?
Yes — Social Security benefits receive a Cost of Living Adjustment (COLA) each year based on the Consumer Price Index. This means Social Security income keeps up with inflation automatically, which makes it especially valuable in late retirement when inflation has had decades to erode the purchasing power of fixed withdrawals.
What this calculator does — and does not — compute
Retirement projections involve inputs that come from government agencies, employers, and tax rules this tool cannot access. Here is exactly what you are providing versus what this calculator handles on its own.
- 1.Social Security is not calculated here. You enter your own monthly estimate in the “Other monthly income” field. This tool does not access your earnings record or apply Social Security benefit formulas. To get your actual personalized estimate, create a free account at ssa.gov/myaccount.
- 2.Required Minimum Distributions (RMDs) are not modeled. The drawdown projection shows balance depletion under your stated withdrawal rate, but it does not enforce IRS RMD schedules (which begin at age 73 for most accounts) or calculate RMD amounts from IRS life-expectancy tables. If RMDs apply to you, actual withdrawals may differ from the projection shown.
- 3.Pension income is an input you provide, not a computed output. If you have a defined-benefit pension, enter your expected monthly payment in “Other monthly income.” This tool does not compute pension formulas (FERS, CalPERS, military, state, or private plan formulas) and does not connect to any employer or government pension system.
- 4.Withdrawal tax treatment is simplified and illustrative. The projection shows gross withdrawals from your portfolio. It does not calculate federal or state income taxes on traditional 401k or IRA distributions, does not model Roth tax treatment, and does not account for RMD-driven bracket changes. Actual after-tax income will differ. For tax planning specific to your situation, consult a qualified tax professional.
- 5.Any depletion result is a projection, not a guarantee. “How long your money lasts” and similar outputs are calculated under your stated return rate, inflation rate, and spending assumptions. Actual outcomes depend on market performance, sequence of returns, unexpected expenses, and life events that cannot be modeled in advance. A projection is a planning tool, not a promise.
This calculator is for educational and planning purposes only. It does not constitute financial, tax, or investment advice.