Retirement
Compare projected savings with a retirement income target based on age, contributions, spending, inflation and returns before and after retirement.
Projected savings at retirement
$2,031,620.74
Modeled capital needed
$1,647,727.93
Funded ratio
123.3%
Modeled shortfall
$0.00
Sustainable monthly income at retirement
$9,051.93
Result comparison
This projection is not financial advice and does not model taxes, Social Security rules, required distributions, fees or market sequence risk.
Calculation method
Savings grow monthly from the current balance and contributions. Desired spending and other income are expressed in today’s money, then increased to the retirement date with the inflation assumption.
Detailed guide
This retirement calculator combines an accumulation phase with an income phase. It first grows current savings and monthly contributions to the chosen retirement age. It then estimates how much capital is needed to cover the gap between desired spending and other retirement income through the planning age.
Unlike a simple FIRE target based on one withdrawal percentage, this model uses separate returns before and after retirement, inflation, life expectancy and other income. The result is still a scenario, not a prediction: varying the return, inflation and retirement age reveals which assumptions have the greatest effect.
Savings grow monthly from the current balance and contributions. Desired spending and other income are expressed in today’s money, then increased to the retirement date with the inflation assumption.
The income phase uses a real return derived from the retirement return and inflation. The annuity factor spreads the income gap across the selected retirement years while allowing the remaining balance to earn the assumed return.
Decision guide
The leading calculators explain current savings, contributions, retirement spending, inflation, and results. A projection is most useful when it exposes the assumptions that create the ending balance instead of presenting one future value as certain.
Start with expected annual spending rather than a generic replacement percentage. Housing, health care, taxes, travel, and support for family may change at different ages. Express future expenses consistently in today’s dollars or future dollars.
Contributions and earned income support the portfolio before retirement; withdrawals begin afterward. Use different return assumptions if the asset mix will become more conservative. Include other income only when its amount and timing are reasonably understood.
Living longer, retiring earlier, or encountering weak early returns can materially change sustainability. Compare later retirement, higher contributions, lower spending, and a lower return. The range is more informative than false precision in a single balance.
Save a baseline, then change only one input at a time: amount, rate, term, or recurring payment. Record the supporting outputs as well as the headline result—contributions, interest, total cost, remaining balance, or target date. This isolates the assumption that actually changes the decision instead of hiding it inside several simultaneous edits.
Do not tune every assumption until the calculator produces a preferred answer. Start with a cautious case, follow with a central case, and treat the favorable case as an upside scenario. A calculator result is not a lender quote, market forecast, or tax determination; actual dates, rounding, fees, contract rules, and required payments must be checked in primary documents.
Keep enough precision in the inputs and round only the output used for a decision. If the estimate supports a transaction, loan, tax calculation, or long-term plan, repeat it with figures from the contract or official statement. Any difference helps identify the assumption that still needs verification.
A funded ratio above 100% means projected savings exceed the modeled target. It does not guarantee that every future market or spending path will work.
Enter an estimate for pensions or Social Security in today’s monthly dollars. Verify eligibility and benefit estimates separately.
Constant returns hide the effect of poor markets early in retirement. Test lower returns, higher inflation and a longer lifespan as stress scenarios.
The answer depends on spending, other income, retirement length, inflation and return assumptions. The required-capital result combines those inputs.
FIRE focuses on financial independence and withdrawal-rate targets. This page models retirement ages, life expectancy and separate accumulation and income phases.
Only the amount you enter as other retirement income. The calculator does not fetch or estimate government benefits.
These primary sources explain the rules and concepts referenced by this calculator. The calculation itself uses only the assumptions entered above.
Updated: August 1, 2026
Useful comparisons
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