What Is Longevity Risk — and How Do You Plan for It?
Running out of money before you run out of life is the retirement risk nobody talks about enough. Here is what longevity risk is, why it matters more than ever, and how to protect yourself.
Most people spend their working years afraid of the wrong retirement risk.
They worry about a market crash wiping out their savings. They worry about inflation eating their purchasing power. They worry about healthcare costs. All of those are real concerns — but there is a quieter, more fundamental risk that underlies all of them:
What if you simply live longer than your money does?
That is longevity risk. And in 2026, it is the retirement planning challenge that deserves far more attention than it gets.
What Is Longevity Risk?
Longevity risk is the possibility that you will outlive your financial assets — that your savings, investments, and income sources will run dry while you are still alive and still have bills to pay.
It is not a fringe scenario. It is a mathematical reality that a growing number of Americans will face, because we are living longer than any previous generation — and most retirement plans were not built with that in mind.
The Social Security Administration estimates that a 65-year-old man today has roughly a 1-in-3 chance of living to age 90. A 65-year-old woman has better than a 1-in-2 chance. For a married couple both aged 65, there is a 72% probability that at least one spouse will reach 85, and nearly a 50% chance one will reach 90.
A 25- to 30-year retirement is not an edge case. It is increasingly the norm.
Why Longevity Risk Is Growing
Several forces are converging to make longevity risk more acute than it was for previous generations.
We Are Living Longer
Medical advances, better nutrition, and improved healthcare have extended average lifespans significantly over the past 50 years. The average American who reaches 65 today can expect to live another 19 to 21 years — and those are averages. Half the population will live longer than that.
Pensions Have Largely Disappeared
Previous generations could count on defined-benefit pension plans that paid a guaranteed monthly income for life, no matter how long they lived. Those plans absorbed longevity risk on behalf of the retiree.
Today, fewer than 15% of private-sector workers have access to a traditional pension. Most Americans retire with a 401(k) or IRA — a lump sum they must manage and draw down themselves. The longevity risk that employers once absorbed has been transferred entirely to individuals.
Sequence-of-Returns Risk Amplifies the Problem
When you are drawing down a portfolio in retirement, the order of investment returns matters enormously. A significant market decline in the early years of retirement — before your portfolio has had time to recover — can permanently impair your ability to sustain withdrawals over a long retirement.
A retiree who experiences a 30% portfolio loss in year two of retirement and continues withdrawing at the same rate may run out of money a decade earlier than projected. The longer the retirement, the more exposure to this sequence-of-returns risk.
Inflation Compounds Over Decades
A 3% annual inflation rate cuts purchasing power roughly in half over 24 years. A retiree who retires at 65 with a fixed income stream may find that income buys significantly less by age 85 — right when healthcare costs are typically rising.
How Much Money Do You Actually Need?
This is the question longevity risk forces you to answer honestly.
The standard retirement planning rule of thumb — the 4% Rule — suggests that a diversified portfolio can sustain annual withdrawals of 4% of its initial value, adjusted for inflation, for 30 years. Based on this, your retirement savings target is roughly 25 times your annual expenses.
If you spend $70,000 per year in retirement, you need approximately $1,750,000 in investable assets.
But the 4% Rule was derived from historical data and assumes a 30-year retirement horizon. If you retire at 60 and live to 95, you are looking at a 35-year retirement. Some financial planners now recommend a 3% to 3.5% withdrawal rate — implying a savings target of 29 to 33 times annual expenses — for those who retire early or have family history of longevity.
The honest answer: there is no single number that guarantees you will not run out of money. What you can do is understand the variables, stress-test your plan, and build in buffers.
What Are the Best Strategies for Managing Longevity Risk?
There is no single solution. The most resilient retirement income plans layer multiple strategies.
1. Delay Social Security
Social Security is the most powerful longevity hedge most Americans have access to — and most people claim it too early.
Every year you delay claiming Social Security past your full retirement age (currently 67 for those born after 1960), your benefit increases by approximately 8%. Claiming at 70 instead of 62 can increase your monthly benefit by 76% or more.
Because Social Security is inflation-adjusted and guaranteed for life, delaying is essentially purchasing longevity insurance at a very favorable rate. For married couples, the strategy is especially powerful: the higher earner should delay as long as possible to maximize the survivor benefit.
2. Build a Guaranteed Income Floor
The goal is to cover your essential expenses — housing, food, healthcare, utilities — with income sources that cannot run out: Social Security, a pension if you have one, and potentially a portion of savings converted to guaranteed income.
When your essential expenses are covered by guaranteed sources, your investment portfolio becomes a source of discretionary spending and legacy wealth — not a survival mechanism. That changes your relationship with market volatility entirely.
3. Maintain a Diversified, Growth-Oriented Portfolio
Counterintuitively, one of the best defenses against longevity risk is staying invested in equities well into retirement. A portfolio that is too conservative — too heavy in bonds and cash — may not generate enough growth to sustain 25 to 30 years of withdrawals.
A common framework: keep 1 to 2 years of living expenses in cash or short-term bonds (your "spending bucket"), and keep the rest invested for long-term growth. This gives you the stability to weather short-term market downturns without being forced to sell equities at a loss.
4. Plan for Healthcare Costs
Healthcare is the largest wildcard in retirement spending. Fidelity estimates that the average couple retiring today will need approximately $315,000 to cover healthcare costs in retirement — and that figure does not include long-term care.
Long-term care (assisted living, memory care, in-home care) is a separate and significant risk. The median annual cost of a private room in a nursing facility exceeds $100,000. A multi-year long-term care event can deplete a retirement portfolio that looked entirely adequate on paper.
Options for managing this risk include long-term care insurance, hybrid life/LTC policies, and self-insuring through a dedicated healthcare reserve. None of these is a perfect solution, but ignoring the risk is not a strategy.
5. Keep Your Withdrawal Rate Flexible
Rigid withdrawal strategies — "I will take exactly $X per month no matter what" — are fragile. A more resilient approach adjusts withdrawals based on portfolio performance and remaining life expectancy.
In years when your portfolio performs well, you can spend a bit more. In years when it underperforms, you pull back. This flexibility, even modest amounts of it, significantly extends the life of a retirement portfolio.
6. Know Your FI Number — and Revisit It
Your Financial Independence number — the portfolio size at which your money can sustain your lifestyle indefinitely — is not a one-time calculation. It should be revisited annually as your expenses, life expectancy estimates, and market conditions evolve.
The families who navigate retirement most successfully are not the ones who made the perfect plan at 65 and never looked at it again. They are the ones who stayed engaged, adjusted when necessary, and understood the variables well enough to make informed decisions.
Frequently Asked Questions About Longevity Risk
What is the biggest financial risk in retirement? For most people, longevity risk — outliving their savings — is the primary threat. It amplifies every other risk: inflation, healthcare costs, and market volatility all become more dangerous the longer you live.
How do I know if I have enough saved for a long retirement? A starting point: multiply your expected annual retirement expenses by 25 (for a 30-year retirement) or by 30 to 33 (for a 35-year or longer retirement). Use the DIY Wealth Planning FI Calculator to see where you stand today.
Is Social Security enough to cover longevity risk? For most people, Social Security alone is not sufficient to cover all retirement expenses — but it is a critical foundation. Maximizing your benefit by delaying to age 70 is one of the highest-return financial decisions available to most Americans.
What is sequence-of-returns risk? It is the danger that poor investment returns early in retirement — when you are actively withdrawing from your portfolio — can permanently impair your financial security, even if long-term average returns are acceptable. It is why the first decade of retirement is the most financially vulnerable.
Should I buy an annuity to protect against longevity risk? A simple, low-cost immediate annuity (SPIA) can be an effective longevity hedge for a portion of your savings — particularly if your guaranteed income sources do not cover essential expenses. Complex, high-fee variable or indexed annuities are a different matter and require careful scrutiny. Always work with a fiduciary advisor before purchasing any annuity product.
The Bottom Line
Longevity risk is not a problem you can solve by saving a little more or picking better investments. It requires a deliberate, multi-layered strategy: maximizing guaranteed income, maintaining a growth-oriented portfolio, planning for healthcare, and staying flexible.
The families I work with who navigate long retirements most successfully share one trait: they did the math early. They knew their number. They understood the risks. And they built a plan that could adapt.
The alternative — hoping it works out — is not a plan. It is a gamble with the years you worked hardest to protect.
Not sure where you stand? Take the Cube Wealth Readiness Assessment for a personalized score across six financial pillars — including retirement income planning. Or use the FI Calculator to see your progress toward financial independence today.
Free tools for longevity planning:
- Milestone Allocator™ — Segment your current income into a three-tier capital blueprint. Building the right allocation now is the foundation for a portfolio that can sustain a 30-year retirement.
- Medicare IRMAA Calculator — Healthcare is the largest variable cost in a long retirement. See how your projected income maps to Medicare premium brackets before you get there.
Related reading:
- Social Security at 62, 67, or 70? Find Your Break-Even Age — Claiming age is one of the highest-leverage longevity decisions you make. See the numbers before you decide.
- Medicare IRMAA: The Hidden Cost of Retirement — Income-based Medicare surcharges are a direct longevity cost. Tax diversification now can reduce them later.
- High Income, No Wealth: The HENRY Trap — High earners face a specific version of longevity risk: high income that never converts to lasting assets. This article covers the fix.
- 9 Small Financial Habits That Can Build Lasting Wealth — The behavioral habits that make a long-term longevity strategy sustainable.
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Written by
Miguel Núñez, DIY Wealth Planning
Content creator and writer sharing insights and stories.
