Simple definition
Longevity risk is the chance you live longer than your savings were built to last, and outlive your money. Living a long life is a blessing, but it stretches every dollar further. Think of it as packing food for a road trip without knowing how long the drive is — plan short, and you run out.
Why it matters
People are living longer, and a retirement can now stretch 30 years or more. Longevity risk means your savings may need to cover far more time than you expect. Planning for a long life — rather than an average one — lowers the odds of running short when you're least able to earn more.
Real-life example
Suppose you retire at 65 with savings meant to last until 85, but you live to 95. That's ten extra years your plan never accounted for. These are round, hypothetical numbers to show the gap — the risk is planning for an average lifespan when you might live well beyond it.
Common mistakes
- Planning only to an average life expectancy, when many people live years beyond it.
- Withdrawing too much early and leaving too little for a longer-than-expected life.
- Ignoring how a long life multiplies the effect of inflation on your savings.
- Assuming Social Security alone will cover a lengthy retirement.
Pro tips
- Plan for a longer life than average, especially if your family tends toward longevity.
- Consider guaranteed lifetime income sources to cover essential costs no matter how long you live.
- Use a conservative withdrawal rate so your savings can stretch further.
- Delaying Social Security, where possible, can raise your lifelong monthly benefit.
Related Money Dictionary terms
- AnnuityA contract with an insurance company that converts a sum of money into a stream of steady payments over time.
- Safe Withdrawal RateThe percentage of your savings you can spend each year with low risk of running out of money during retirement.
- 4% RuleA guideline suggesting you can withdraw four percent of your savings the first year of retirement, adjusting for inflation after.
- Inflation RiskThe chance that rising prices erode your buying power over time, making fixed retirement income stretch less each year.
- Nest EggThe total pool of money and investments you build up to fund your living expenses throughout retirement.
- Retirement IncomeThe money you live on after you stop working, drawn from savings, Social Security, pensions, and other sources.
Frequently asked questions
How long should I plan for my retirement to last?
Longer than you might guess. Average life expectancy is just an average — roughly half of people live beyond it. Many planners suggest budgeting to at least your early or mid-90s, especially if you're healthy or have long-lived relatives. Planning for a long life is safer than planning for an average one.
How can I reduce longevity risk?
Common tools include claiming Social Security at a later age to boost your monthly check, holding some guaranteed lifetime income, and using a cautious withdrawal rate so savings last. Keeping some growth investments can help too. A fee-only advisor can help you combine these based on your health and resources.
Is longevity risk the same as running out of money?
It's the risk that leads there. Longevity risk is specifically the danger of outliving your savings because you live longer than planned. Running out of money is the outcome you're trying to avoid. Addressing longevity risk early — through income planning and careful withdrawals — is how you lower that chance.
Knowing what Longevity Risk means is knowledge — the first half. A brick gets placed when you act on it: look up a life-expectancy estimate for your age and plan your savings to last several years beyond it.
Also builds: Income Protection
Sources & references
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Plain-English education — not personalized legal, tax, or investment advice.