The number that actually matters
“How much do I need to retire?” has a cleaner answer than most people expect. Start with what you want to spend each year. Take away what Social Security or a pension will cover — that income directly reduces what your savings have to fund. Whatever is left is the gap your nest egg fills, and a nest egg of about 25× that gap can sustain it using the 4% rule.
This calculator shows that number in today’s money, so it’s easy to relate to, and cross-checks the simple 25× estimate against a more precise present-value calculation that accounts for your actual time horizon and returns. The two should land close together — that agreement is what gives you confidence in the figure.
Why Social Security changes everything
Counting Social Security is the difference between a scary number and an achievable one. Spending $60,000 a year sounds like it needs $1.5 million saved — but if Social Security covers $24,000, your portfolio only has to produce $36,000, dropping the target to roughly $900,000. Enter your expected monthly benefit above (the average US check is around $1,900) and watch the required nest egg fall.
Frequently asked questions
How much money do I need to retire?
A widely used rule of thumb is about 25× your annual spending — but only the portion your savings must cover after Social Security or a pension. If you want to spend $60,000 a year and Social Security provides $24,000, your portfolio only needs to fund the remaining $36,000, which is about $900,000 under the 25× rule. The calculator above shows your precise number in today’s money.
How much do I need to retire at 65?
It depends far more on your spending than your age. Net out Social Security from your target spending, multiply the remainder by about 25, and you have a solid estimate. For many households aiming to spend $50,000–$70,000 a year, the required nest egg lands somewhere between $500,000 and $1.2 million once Social Security is counted. Set your own numbers above for an exact figure.
Is $1 million enough to retire?
For a lot of people, yes. At a 4% withdrawal rate, $1 million provides about $40,000 a year before other income — and combined with Social Security that can comfortably support a moderate lifestyle. Whether it’s enough for you depends on your spending and how long you plan for. Enter your details to see whether $1 million covers your target.
What is the 25× rule?
The 25× rule says you need roughly 25 times your annual spending saved to retire — the inverse of the 4% safe withdrawal rate (1 ÷ 0.04 = 25). It’s a quick estimate, not a guarantee. This calculator pairs it with a more precise present-value method and lets you adjust the withdrawal rate and life expectancy to match how cautious you want to be.
Worked examples
Each scenario below is computed by the same retirement engine that powers the interactive calculator above — no hand-typed numbers.
Modest retirement — $50k/year spending
Saver at 40, planning to retire at 65, wanting $50,000/year in today's money with $1,800/month Social Security. How much do they need?
Projected nest egg
$1,220,599
Required (today's $)
$569,117
Funded ratio
102%
Monthly income
$3,743/mo
At $50k/year with $21.6k SS, the portfolio must cover only $28.4k/year — requiring about $710k, not the $1.25M the 25× rule would suggest if applied to total spending.
Comfortable retirement — $90k/year spending
Professional at 45, retiring at 65, wanting $90,000/year with $2,500/month Social Security. A high spending target requires a larger portfolio.
Projected nest egg
$1,791,075
Required (today's $)
$1,202,360
Funded ratio
82%
Monthly income
$5,806/mo
$90k spending − $30k SS leaves a $60k/year portfolio gap, requiring $1.5M at a 4% SWR. The required nest egg is always smaller than 25× total spending once SS is counted.
Required nest egg by spending and Social Security income
At a 4% SWR, retiring at 65, planned to age 90.
| Annual spending ($) | $0 | $1,500 | $2,000 | $2,500 | $3,000 |
|---|---|---|---|---|---|
| $40,000 | $802K | $441K | $321K | $200K | $80K |
| $60,000 | $1M | $842K | $721K | $601K | $481K |
| $75,000 | $2M | $1M | $1M | $902K | $782K |
| $90,000 | $2M | $1M | $1M | $1M | $1M |
| $120,000 | $2M | $2M | $2M | $2M | $2M |
Required nest egg in today's dollars (PV method). More guaranteed income = smaller required portfolio. At $2,000/month SS and $75k spending, the portfolio must cover only $51k/year.
What affects your retirement outcome
Annual spending target
Each $10,000 increase in annual spending adds $250,000 to the required portfolio at a 4% SWR.
Social Security / pension income
Every $1,000/month of guaranteed income reduces the required portfolio by $300,000 at a 4% SWR.
Withdrawal rate
Choosing 3.5% vs 4% increases the required portfolio by over 14%, but significantly reduces longevity risk.
Retirement age
Retiring earlier means a longer drawdown horizon, which typically requires a lower (safer) withdrawal rate and therefore a larger portfolio.
Practical takeaways
- ✓The formula: Required portfolio = (Annual spending − Monthly SS × 12) ÷ Safe withdrawal rate. Run this before accepting any round-number target.
- ✓For most people, Social Security reduces the required portfolio by $400,000–$800,000 compared to naive 25× calculations.
- ✓Build in a 10–20% buffer above the required figure to account for healthcare uncertainty, market variability, and longevity.
More retirement questions
How much do I need to retire at 65?
The answer depends entirely on your spending and other income. The formula is: (Annual spending you need from your portfolio) ÷ 0.04. If you need $50,000/year from investments (after Social Security), you need $1.25 million. If Social Security covers $30,000/year and you want $80,000 total, you need only $50,000/year from the portfolio, requiring $1.25M. Enter your numbers above for your personalized required nest egg.
Does the $1 million retirement target apply to everyone?
No — $1 million is a round number that works for some situations and misses others badly. At a 4% SWR, $1M supports $40,000/year from your portfolio. Add Social Security and a modest lifestyle, and it works. If you spend $90,000/year and SS covers $25,000, your portfolio must cover $65,000/year — requiring $1.625M. The right number is your number, calculated from your spending plan and income sources.
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.