Retirement Longevity Calculator
Calculate how many years your retirement savings will last based on your withdrawal rate, investment returns, and inflation.
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This calculator is for informational and educational purposes only. Results are estimates based on the information you provide and standard financial formulas. This is not financial advice. Consult a qualified financial advisor for decisions specific to your situation. Full Disclaimer
Things to Know
Essential concepts for understanding your results
Planning HorizonHow long should your retirement savings last?
Plan for 30-35 years minimum from retirement age. A 65-year-old today has a 50% chance of living to 85 and a 25% chance of reaching 92. For couples, the chance of at least one partner reaching 92 exceeds 40%. Running out of money at 88 with 5+ years of life remaining is catastrophic. Use age 95 as your planning horizon — it is better to leave a small inheritance than to exhaust savings while still alive.
Longevity RiskWhat is longevity risk and how do you manage it?
Longevity risk is the danger of outliving your savings. Mitigation strategies: delay Social Security to 70 for maximum guaranteed lifetime income, use a 3.5% withdrawal rate instead of 4%, maintain 40-50% stocks in your portfolio for continued growth, consider a partial annuity to create additional guaranteed income, and maintain flexibility to reduce spending during market downturns. Dynamic withdrawal strategies reduce longevity risk to under 2%.
Healthcare PlanningHow do healthcare costs compound over a long retirement?
Fidelity estimates a 65-year-old couple needs $315,000 for healthcare in retirement — and this assumes average longevity. For those living to 95, healthcare costs can reach $450,000-500,000. Long-term care (nursing home: $8,000-12,000/month, home aide: $5,000-6,000/month) is the biggest tail risk. Long-term care insurance, a Health Savings Account, and self-insuring through additional savings are the three main hedging strategies.
Inflation Over DecadesHow does inflation affect a 30-year retirement?
At 3% annual inflation, $5,000/month in purchasing power today requires $12,140/month in 30 years. Your portfolio must generate increasing income every year just to maintain the same lifestyle. This is why retirees must keep 40-60% of their portfolio in stocks — bonds alone cannot keep pace with inflation over decades. The 4% rule accounts for inflation by increasing withdrawals annually, but a 100% bond portfolio would fail under this approach.
Planning for Retirement Longevity
Whether you are looking for a retirement longevity estimator, calculate retirement longevity, how to calculate retirement longevity, retirement longevity formula, retirement longevity returns, or retirement longevity growth — this free retirement longevity calculator provides accurate estimates to help you plan and make informed financial decisions.
The biggest risk in retirement is outliving your savings. This calculator models how long your nest egg will last given your withdrawal rate, investment returns, and inflation. Inflation is critical — a $4,000/month withdrawal today needs to be ~$5,400 in 10 years at 3% inflation to maintain the same purchasing power.
The 4% Rule
The 4% rule suggests withdrawing 4% of your portfolio in year one, then adjusting for inflation each year. Historically, this strategy has a high success rate for 30-year retirements. However, many financial planners now suggest 3.5% for greater safety.
Sequence of Returns Risk
Poor investment returns in the first few years of retirement can dramatically reduce how long your savings last, even if average returns are good. This is called "sequence of returns risk" and is why many retirees keep 2-3 years of expenses in cash.
Factors That Determine How Long Your Savings Last
Withdrawal rate: The percentage of your portfolio you withdraw annually. The traditional 4% rule was designed for 30-year retirements, but many planners now recommend 3.5% or less for early retirees or longer time horizons.
Investment returns in retirement: Most retirees shift to a more conservative allocation (60/40 stocks/bonds or even 50/50). Expected returns of 4-6% are reasonable for a balanced portfolio, but returns aren't guaranteed.
Inflation: At 3% inflation, your purchasing power halves in 24 years. A retiree needing $4,000/month at 65 will need about $7,200/month at 85 to maintain the same lifestyle. Always plan with inflation-adjusted withdrawals.
Sequence of returns risk: If the market drops 30% in your first year of retirement, your savings take a massive hit that's hard to recover from — even if average returns over the full period are normal. This is why keeping 2-3 years of expenses in cash or short-term bonds is critical.
Strategies to Make Savings Last Longer
Guardrails approach: Reduce withdrawals by 10% when your portfolio drops below a threshold, and increase by 10% when it rises above another threshold. This dynamic approach can extend portfolio longevity by 5-10 years compared to rigid withdrawals.
Part-time income: Even modest income ($1,000-2,000/month) in early retirement dramatically reduces portfolio drawdown and extends longevity. Consider consulting, teaching, or freelancing — use our Freelance Rate Calculator.
Delay Social Security: Waiting from age 62 to 70 increases your benefit by roughly 76%. Each year you delay adds approximately 8% to your annual benefit — a guaranteed return that's hard to beat elsewhere.