The Retirement Risk Nobody Sees Coming: When Your Plan Works on Paper but Not in Real Life

By Brent Meyer — Founder & Editor, SafeMoney.com Reviewed by Licensed Financial Professionals | SafeMoney.com — The Open Book on Retirement | Updated September 2026

Quick Answer

A retirement plan can look perfectly reasonable on paper and still struggle in real life because retirement rarely unfolds according to a single set of assumptions. Markets decline. Inflation changes. Healthcare costs arise. Tax rules affect withdrawals. One spouse may live much longer than expected. A family emergency can require money at the worst possible time.

That is why retirement planning shouldn’t stop with asking, “Does my plan work?” A better question is: “What happens to my plan when something doesn’t go according to plan?”

A retirement projection shows what may happen under a particular set of assumptions. A retirement stress test examines what could happen when those assumptions change. For people approaching retirement, that distinction can be extremely important.

The Problem With a Retirement Plan That Only Works Under Ideal Conditions

Most people understand that retirement planning involves estimates. The problem is that those estimates can begin to feel like facts.

You might assume:

• a particular investment return,
• a certain inflation rate,
• a retirement date,
• a Social Security claiming age,
• predictable healthcare expenses,
• a certain amount of annual spending,
• and a particular life expectancy.

Put all those assumptions into a retirement calculator and you may receive a reassuring answer. But retirement doesn’t happen inside a spreadsheet.

A Projection Is Not a Promise

Suppose your retirement projection assumes your savings earn an average return over the next 25 years. That may be mathematically reasonable for modeling purposes. But you aren’t going to experience an “average” year every year. You might experience strong years, weak years, flat years, and significant declines. More importantly, the order in which those years occur can matter enormously once you’re withdrawing money.

The same is true for inflation. An average inflation assumption doesn’t tell you what happens if higher inflation occurs during your first five years of retirement. And an estimated healthcare budget doesn’t tell you what happens if you or your spouse suddenly require substantially more care.

The purpose of stress-testing isn’t to predict which problem will occur. It is to determine how dependent your retirement is on things going right.

Stress Test #1: What If the Market Drops Just After You Retire?

This is one of the most important differences between accumulating money and spending it.

Losses Can Matter Differently Once Withdrawals Begin

While you’re working, a market decline can be uncomfortable, but you may still have employment income and the ability to continue contributing to retirement accounts.

Retirement changes the equation. You may now be withdrawing from the same assets experiencing the decline.

Imagine two retirees with identical starting portfolios and identical long-term average returns. One experiences strong markets early in retirement. The other experiences significant losses during the first several years. Their long-term outcomes can be dramatically different because the second retiree may have to sell assets while values are depressed.

This is commonly called sequence-of-returns risk. SafeMoney.com’s broader retirement-planning guidance identifies sequence risk alongside market, longevity, inflation, healthcare, and other retirement risks.

Ask This Question

Instead of asking only: “What return do I expect?”

Ask: “If the market fell significantly during my first few years of retirement, where would my income come from?”

That question shifts retirement planning from return assumptions toward income design.

Stress Test #2: What If Inflation Is Higher Than You Expected?

Inflation doesn’t need to be dramatic to change a retirement plan. It only needs time.

Retirement Could Last Decades

If you retire in your 60s, your retirement income may need to support you for 20, 25, 30 years—or longer. That means purchasing power matters. An income that feels comfortable at retirement may not buy the same lifestyle many years later.

Consider expenses such as:

• groceries,
• utilities,
• insurance,
• home maintenance,
• transportation,
• travel,
• property taxes,
• and healthcare.

Many of these expenses won’t remain frozen simply because you’ve retired.

Stress-Test Purchasing Power

Try modeling your retirement expenses at several inflation assumptions rather than just one. Then ask: If my essential expenses rise faster than expected, which income sources have the ability to increase?

That is a different question from simply asking whether you have enough money today.

Stress Test #3: What If You Live Longer Than Expected?

Living a long life is something most of us hope for. Financially, however, longevity changes the mathematics of retirement.

Life Expectancy Isn’t an Expiration Date

A retirement plan shouldn’t assume that you will conveniently live exactly as long as an average life-expectancy statistic suggests. Some retirees will live considerably longer. For married couples, the planning horizon can be especially important because the plan may need to continue until the second spouse dies. That’s why longevity should be treated as a risk to manage—not because living longer is bad, but because outliving income can be.

SafeMoney.com offers a free Longevity Calculator that can help illustrate why planning horizons matter. The result is an estimate for educational purposes, not a prediction of lifespan.

Run the “Long Life” Scenario

If your plan currently assumes age 90, what happens at 95? What about 100? The goal isn’t to guess your date of death. It’s to determine whether living longer creates a financial problem.

Stress Test #4: What If Healthcare Costs More Than You Planned?

Retirement healthcare deserves its own stress test. Medicare can provide important coverage, but Medicare does not mean healthcare becomes free.

For 2026, for example, the standard Medicare Part B premium is $202.90 per month, while beneficiaries can also face deductibles, coinsurance, copayments, prescription costs and potentially income-related premium adjustments.

Don’t Treat Healthcare as One Number

Your retirement healthcare plan may need to consider:

• Medicare premiums,
• supplemental coverage,
• prescription drugs,
• dental care,
• vision care,
• hearing expenses,
• deductibles and copays,
• income-related Medicare charges,
• and potential long-term-care needs.

Try SafeMoney.com’s free Medicare Calculator to begin estimating potential Medicare-related retirement costs. Calculator results are educational estimates and should not be treated as individualized Medicare, financial, or tax advice.

Stress Test #5: What If Taxes Change Your Spendable Income?

Retirees don’t live on account balances. They live on spendable income. Those aren’t necessarily the same thing.

A $1 Million Retirement Account Isn’t $1 Million of Spending Money

The tax treatment of retirement assets depends on the type of account and the circumstances surrounding withdrawals. Traditional retirement accounts can create taxable income when distributions are taken. Roth accounts can have different treatment when distribution requirements are satisfied. Social Security benefits may also be taxable depending on your circumstances.

Eventually, required minimum distributions can affect the amount that must come out of certain retirement accounts. The IRS says RMDs generally begin at age 73 under current rules for traditional IRAs and many retirement-plan accounts, with important exceptions and plan-specific rules.

Test After-Tax Income

Instead of asking: “How much income will my accounts generate?”

Ask: “How much of that income will I actually be able to spend after taxes and other costs?”

Tax planning can be an important part of retirement-income planning, particularly when multiple account types are involved.

Stress Test #6: What If Social Security Starts at a Different Time?

Social Security is often one of the largest lifetime income sources retirees have. The decision about when to claim therefore deserves more attention than simply choosing an age.

Claiming Age Changes the Benefit

Social Security retirement benefits can generally begin as early as age 62, but claiming before full retirement age reduces the monthly retirement benefit. Delaying beyond full retirement age can increase benefits through delayed retirement credits, with those increases stopping at age 70.

For people born in 1960 or later, for example, full retirement age is 67. SSA says delaying from 67 until 70 results in a benefit equal to 124% of the full-retirement-age amount.

That doesn’t mean everyone should delay. The appropriate claiming strategy depends on individual circumstances.

Stress-Test Multiple Claiming Ages

Run your retirement plan using different Social Security start dates. Then examine what changes:

• monthly guaranteed income,
• portfolio withdrawals,
• taxes,
• survivor income,
• and longevity exposure.

Social Security shouldn’t be analyzed in isolation from the rest of your retirement plan.

Stress Test #7: What Happens When One Spouse Dies?

A retirement plan for two eventually becomes a retirement plan for one. That transition can alter both income and expenses.

Income May Decline Faster Than Expenses

Some household expenses disappear or decrease after a spouse dies. Many do not.

• Housing costs may remain.
• Property taxes remain.
• Utilities continue.
• Insurance continues.
• Healthcare continues.
• Home maintenance continues.

Meanwhile, certain household income sources can change. That means couples should test both survivor scenarios.

Ask: If I die first, what happens financially to my spouse?

Then reverse it: If my spouse dies first, what happens to me?

A retirement plan shouldn’t merely get both spouses to retirement. It should consider whether either spouse can remain financially secure afterward.

Stress Test #8: What If You Need More Money Than Expected?

Retirement budgets often contain neat categories. Life does not.

• A roof needs replacing.
• An adult child needs help.
• A vehicle fails.
• A hurricane damages the house.
• A family member needs care.
• A major trip becomes important.

These aren’t necessarily irresponsible expenses. They’re life.

Build Flexibility Into the Plan

A retirement strategy that allocates every available dollar to routine spending can leave very little room for surprises.

Consider separating retirement resources conceptually into different jobs:

• Income money supports recurring expenses.
• Emergency money handles unexpected short-term needs.
• Growth money may help address longer-term inflation and legacy objectives.
• Protected or guaranteed income sources may cover part of essential spending.

The exact structure will differ from person to person. The larger principle is important: Every retirement dollar doesn’t have to perform the same job.

Stress Test #9: What If You Retire Earlier Than Planned?

Many people have a retirement date. Life sometimes has another one. Health problems, layoffs, caregiving responsibilities, corporate restructuring or family circumstances can push someone into retirement earlier than expected.

Test an Early-Retirement Scenario

If you’re planning to retire at 67, run the numbers at 65. Then 63.

What changes? You may have:

• fewer years of saving,
• fewer years of employer contributions,
• additional years requiring income,
• different Social Security choices,
• healthcare coverage issues before Medicare,
• and a longer period before other retirement-income sources begin.

If retiring two or three years early seriously compromises the plan, you’ve identified a vulnerability before it becomes an emergency.

Stress Test #10: What If Your Spending Changes?

Retirement spending isn’t necessarily a straight line. Many retirees experience phases.

Early Retirement

Travel, hobbies, home improvements and entertainment may increase.

Middle Retirement

Activity may slow and discretionary spending may decline.

Later Retirement

Healthcare and support costs may become more important.

A retirement plan based on one fixed spending number may miss these transitions. Rather than asking what you’ll spend in “retirement,” consider what you might spend during different stages of retirement.

The Retirement Stress-Test Scorecard

You don’t need to predict every possible crisis. Start by asking whether your plan can tolerate several reasonable changes.

You don’t need every scenario to produce the same outcome. What you’re looking for are breaking points.

What Happens If Your Retirement Plan Fails a Stress Test?

Don’t panic. Finding a weakness before retirement is useful information.

You May Have More Options Than You Think

Depending on your circumstances, possible adjustments might include:

• saving more before retirement,
• working somewhat longer,
• modifying retirement spending,
• reconsidering Social Security timing,
• maintaining a larger liquid reserve,
• changing how retirement assets are allocated,
• creating additional predictable income,
• reviewing existing annuity or life-insurance contracts,
• planning withdrawals more tax-efficiently,
• or reducing unnecessary financial risk.

No single solution is appropriate for everyone. The objective is to understand which risk you’re trying to solve before selecting a financial product or strategy.

Where Guaranteed Income May Fit

Stress-testing can reveal an important distinction between money you can afford to expose to market fluctuations and money you depend on for essential expenses.

For some retirees, Social Security and pensions cover much of their essential spending. Others have a significant gap.

The Income-Gap Question

Start with: Essential monthly expenses minus Reliable monthly income equals the essential-income gap.

If a meaningful gap exists, some retirees may explore insurance products such as fixed or fixed indexed annuities to provide contractual guarantees, subject to the financial strength and claims-paying ability of the issuing insurer.

That doesn’t mean an annuity automatically belongs in every retirement plan. It means the conversation starts with the problem: What income needs to keep arriving regardless of what the market is doing?

Products come after that question—not before it.

Your Retirement Plan Should Have a Margin for Error

Perhaps the biggest lesson from stress-testing is that retirement shouldn’t require mathematical perfection.

If your retirement succeeds only if:

• markets cooperate,
• inflation remains modest,
• healthcare stays inexpensive,
• you live exactly as long as expected,
• taxes don’t surprise you,
• and no major emergency occurs,

you may not have a retirement plan. You may have a collection of optimistic assumptions. A stronger plan has room for life to happen.

Resilience Matters More Than Precision

Nobody can accurately forecast every market return, inflation rate, medical expense or tax change over the next 30 years. The goal therefore isn’t perfect prediction. It’s preparation.

A retirement projection tells you what could happen if assumptions cooperate. A retirement stress test asks what happens when they don’t. That second question may tell you much more about how prepared you really are.

Start With Your Numbers

Before making major changes, establish a baseline.

SafeMoney.com’s free Retirement Calculator can help you model retirement income and explore how different assumptions affect the picture.

You can also use the Retirement Savings Calculator to examine savings and income assumptions, or complete the free Retirement Readiness Score, which evaluates preparedness across savings, income, health planning and risk management.

These tools provide educational estimates based on the information and assumptions entered. They are not predictions, guarantees, investment recommendations, or individualized financial advice.

Once you’ve run the numbers, change them.

That is where the real stress test begins.

Key Takeaways

• A retirement projection is only as useful as the assumptions behind it.
• Average returns don’t show the potential impact of poor market performance early in retirement.
• Inflation, longevity, healthcare and taxes can materially change how much income you actually need.
• Social Security claiming decisions should be evaluated as part of the entire retirement-income plan.
• Married couples should test what happens financially after either spouse dies.
• Retirement plans should include flexibility for unexpected expenses and an earlier-than-planned retirement.
• Guaranteed income may help address specific income needs, but the problem should be identified before selecting a product.
• A resilient retirement plan doesn’t require everything to go perfectly.
• Retirement calculators are useful starting points, but their results are estimates—not guarantees.
• The purpose of a retirement stress test isn’t to predict the future. It’s to discover vulnerabilities while you still have time to address them.

Frequently Asked Questions

What is a retirement stress test?

A retirement stress test examines how a retirement strategy responds when important assumptions change. Examples include lower investment returns, higher inflation, longer life expectancy, increased healthcare expenses, early retirement or the death of a spouse.

How often should I stress-test my retirement plan?

There is no universal schedule, but reviewing the plan periodically and after major financial or life changes can help keep assumptions current. Approaching retirement is an especially important time to test multiple scenarios.

What is sequence-of-returns risk?

Sequence-of-returns risk refers to the effect that the timing and order of investment returns can have when withdrawals are occurring. Significant losses early in retirement can be particularly challenging because money withdrawn during a downturn is no longer invested to participate in a potential recovery.

How much money do I need to retire?

There is no single number that works for everyone. Retirement needs depend on spending, income sources, taxes, healthcare, longevity, inflation, retirement age and other factors. SafeMoney.com’s retirement calculators can help you begin estimating your individual numbers.

Should I delay Social Security until age 70?

Not necessarily. Delaying beyond full retirement age can increase the monthly retirement benefit until age 70, but claiming decisions depend on individual circumstances including health, income needs, employment, marital situation and other resources. SSA confirms that delayed retirement credits stop accumulating at age 70.

Should guaranteed income cover all of my retirement expenses?

Not necessarily. Some retirees prefer to evaluate how much of their essential spending is covered by reliable income sources such as Social Security, pensions or qualifying insurance guarantees. Other assets may serve different purposes. The appropriate balance depends on individual circumstances.

Are annuities necessary for retirement?

No. Annuities are insurance contracts that may address particular retirement needs, including predictable income or principal-protection objectives depending on the contract. They are not appropriate for every person or every dollar.

What happens if my retirement calculator says I’m not ready?

Treat the result as information rather than a verdict. You may be able to adjust savings, spending, retirement timing, Social Security strategy, income sources or other assumptions. Calculator outputs are estimates and should be reviewed in the context of your complete financial situation.

Should I plan to live to age 100?

Not everyone will live to 100, and no calculator can predict an individual’s lifespan. Testing a longer-life scenario can nevertheless reveal whether longevity would create an income problem.

How should I account for Medicare in retirement?

Include premiums as well as potential deductibles, copays, prescription costs, supplemental coverage and other out-of-pocket healthcare expenses. Medicare costs and rules can change, so current information should be verified directly with Medicare.gov.

When do required minimum distributions begin?

Under current federal rules, RMDs generally begin at age 73 for traditional IRAs and many retirement-plan accounts, although exceptions and plan-specific rules apply. Roth IRAs and designated Roth workplace accounts generally do not require lifetime RMDs for the original owner under current rules. Verify your circumstances with the IRS RMD guidance or a qualified tax professional.

Where can I get help stress-testing my retirement plan?

After running your own numbers, you may want a financial professional to examine how the pieces interact—including income, taxes, Social Security, insurance, investments, longevity and survivor planning.

SafeMoney.com’s Find an Advisor network can help you locate a financial professional in your area.

The Bottom Line

The most dangerous retirement plan may not be one that obviously doesn’t work. It may be one that looks excellent—as long as everything happens exactly as expected.

Retirement planning isn’t about predicting the next 20 or 30 years perfectly. It’s about building enough flexibility that you don’t have to.

Run the projection. Change the assumptions. Test the bad years. Test the long life. Test the unexpected expense. Test the surviving spouse.

Then ask the question that matters: Does my retirement still work when real life gets involved? That is where retirement confidence begins.