How Long Will $500,000 Last in Retirement? Let’s Run the Numbers

Updated for 2026

You’ve worked for decades and finally built a $500,000 retirement nest egg. Now comes the question that can be a little uncomfortable to ask:

How long will $500,000 actually last once I stop working?

The answer could be 10 years, 20 years, 30 years or potentially the rest of your life. It depends largely on how much you need to withdraw, how much income you receive from Social Security or a pension, how your investments perform, and how your spending changes over time.

That may sound like a frustrating answer, but there is good news: once you understand a few numbers, you can get a much clearer picture of what $500,000 might mean for your retirement.

Let’s run the numbers.

The Quick Answer: How Long Can $500,000 Last?

If you simply put $500,000 in a box and withdrew the same amount every year, the math would be easy.

Annual Withdrawal	Monthly Equivalent	How Long $500,000 Lasts*
$15,000	$1,250	33.3 years
$20,000	$1,667	25 years
$25,000	$2,083	20 years
$30,000	$2,500	16.7 years
$40,000	$3,333	12.5 years
$50,000	$4,167	10 years

*This simple illustration assumes no investment gains, no losses, no inflation, no taxes and the same withdrawal every year.

At first glance, the table seems to answer the question. Withdraw $20,000 a year and your $500,000 lasts 25 years.

But that’s not how retirement usually works.

Your remaining money may continue to be invested. Markets rise and fall. Your expenses change. Inflation makes things more expensive. Taxes can affect how much you need to withdraw. And Social Security may cover a significant portion of your living expenses.

Those factors can completely change how long your $500,000 lasts.

The Number That Really Matters Is Your Spending Gap

Instead of asking how much you spend in total, first figure out how much of that spending must actually come from your investments.

Annual spending − Social Security − pension and other dependable income = amount needed from your portfolio

Suppose you expect to spend $60,000 during your first year of retirement and receive $40,000 from Social Security.

Your $500,000 portfolio doesn’t need to produce $60,000. It initially needs to provide about $20,000.

$60,000 spending − $40,000 Social Security = $20,000 portfolio withdrawal

$20,000 ÷ $500,000 = 4% initial withdrawal rate

Now imagine another retiree who also has $500,000 but needs $75,000 a year and receives only $30,000 from Social Security.

That person’s portfolio needs to provide $45,000 during the first year — an initial withdrawal rate of 9%.

Same $500,000. Very different retirement problem.

Meet Tom and Linda: Retiring With $500,000

Let’s make this more realistic.

Tom and Linda are both 65 and ready to retire. Together they have $500,000 invested across their retirement accounts.

They expect approximately $42,000 a year from Social Security and want about $62,000 a year to support their lifestyle before considering the finer details of taxes.

Desired spending: $62,000

Social Security: $42,000

Needed from investments: $20,000

Starting portfolio: $500,000

Initial withdrawal rate: 4%

Does that mean their money will last exactly 25 years?

No.

If their remaining portfolio earns investment returns, it could potentially last considerably longer. If they experience poor returns, high inflation or larger-than-expected withdrawals, it could be depleted sooner.

The important point is that Tom and Linda aren’t trying to live entirely on $500,000. Their portfolio is filling the gap between their spending and Social Security.

What Does the 4% Rule Say About $500,000?

You’ve probably heard of the 4% rule. In its traditional form, it is a retirement-withdrawal guideline that starts with a percentage of the portfolio in the first year and adjusts the dollar withdrawal for inflation in subsequent years.

Using 4% as a simple illustration:

$500,000 × 4% = $20,000 during the first year

Add $40,000 of annual Social Security income and the household starts with roughly $60,000 of gross income before considering taxes and other adjustments.

But don’t confuse a rule of thumb with a guarantee. There is no withdrawal percentage that magically guarantees your money will last for life.

Your retirement length, investment mix, market performance, inflation and spending flexibility all matter. Even professional retirement-income research produces different starting withdrawal estimates depending on the assumptions being tested.

What If You Withdraw 3%, 4%, 5% or 6%?

Here’s another way to look at $500,000.

Starting Withdrawal Rate	First-Year Withdrawal	Monthly Equivalent
3%	$15,000	$1,250
4%	$20,000	$1,667
5%	$25,000	$2,083
6%	$30,000	$2,500
8%	$40,000	$3,333
10%	$50,000	$4,167

Notice what happens as the withdrawal rate rises. A household needing $15,000 from its portfolio is putting far less pressure on the $500,000 than a household needing $40,000 or $50,000 every year.

This is why Social Security, pensions and other dependable income can make such a large difference.

Social Security Can Dramatically Change How Long $500,000 Lasts

Suppose two retired households each spend $60,000 a year and each has $500,000 saved.

Household A receives $45,000 a year from Social Security and needs only $15,000 from investments.

Household B receives $25,000 from Social Security and needs $35,000 from investments.

Their retirement savings are identical, but Household B is initially drawing more than twice as much from its portfolio.

That’s why your Social Security claiming decision deserves careful thought. Starting benefits earlier generally means a smaller monthly benefit than waiting, while delaying beyond full retirement age can increase the monthly benefit up to age 70.

But delaying Social Security isn’t automatically the best answer either. If you retire before claiming, your investments may need to provide additional income while you wait.

Social Security claiming decision

Your $500,000 Doesn’t Stop Working When You Do

One of the biggest problems with the simple “$500,000 divided by annual withdrawals” calculation is that it assumes your remaining money earns nothing.

Most retirees don’t put their entire retirement portfolio under the mattress. They generally maintain some combination of stocks, bonds, cash and other investments based on their goals and risk tolerance.

If the portfolio grows, those investment gains can help replace some of the money being withdrawn.

But there’s an important catch: investment returns aren’t predictable.

A portfolio might have a very good year followed by a terrible year. Retirement planning has to account for that uncertainty.

Why a 6% Average Return Doesn’t Mean You’ll Earn 6% Every Year

It’s tempting to build a retirement spreadsheet that assumes:

$500,000 + 6% return − withdrawals = future balance

Then repeat that same 6% return every year.

The math is easy, but real markets don’t behave like that.

You could experience returns such as:

+18%, +7%, -21%, +14%, -8%, +24%…

Over a long period, the average return could look reasonable. But once you’re withdrawing money, when the bad years happen can matter almost as much as the average.

The Danger of a Market Crash Early in Retirement

Imagine retiring with $500,000 and immediately encountering a major bear market.

Your portfolio falls while you’re also withdrawing money to pay your bills. Some investments may have to be sold at depressed prices, leaving fewer shares available to participate when markets eventually recover.

This is called sequence-of-returns risk.

It is especially important during the early years of retirement because the portfolio may need to support decades of future withdrawals.

Someone who experiences strong returns during the first several retirement years may end up in a completely different position from someone who experiences a major downturn immediately — even if their long-term average returns eventually look similar.

Inflation Quietly Changes the Math

There’s another problem with saying “$20,000 per year means $500,000 lasts 25 years.”

Twenty thousand dollars today may not buy the same amount 10, 20 or 25 years from now.

If your grocery bill, insurance, utilities, property taxes and other expenses rise over time, you may need increasingly larger withdrawals just to maintain the same lifestyle.

That’s why a realistic retirement projection should consider inflation rather than assuming you’ll spend exactly the same dollar amount forever.

Taxes Matter Too

Where the $500,000 is held can affect how much you actually have available to spend.

If most of your money is in a traditional 401(k) or traditional IRA, withdrawals are generally taxable. A qualified Roth withdrawal can receive different tax treatment.

That means two people who each have a $500,000 account balance may not have exactly the same amount available for spending after taxes.

Taxes can also interact with Social Security and other parts of your retirement plan, so it’s better to think in terms of after-tax spending needs rather than simply looking at gross account withdrawals.

How Long Should You Plan For?

If you retire at 65 and plan only until age 80, you’re building a 15-year retirement plan.

But what happens if you live to 90? Or 95?

Retiring at 65 and living to 95 means approximately 30 years of retirement. Your money doesn’t necessarily need to remain untouched for 30 years, but your overall income plan needs to support you throughout that period.

This is longevity risk: the risk of living longer than your financial assumptions anticipated.

For retirement planning, living a long life is a good problem to have — but financially, it still needs to be planned for.

What About Required Minimum Distributions?

If some of your $500,000 is held in traditional retirement accounts, eventually the government generally requires you to begin taking minimum distributions.

These are known as Required Minimum Distributions, or RMDs.

RMDs don’t necessarily mean you have to spend the money. But they can affect taxable income and should be considered as part of a longer-term withdrawal and tax strategy.

Could $500,000 Last 30 Years?

Yes, it could. But whether it does depends heavily on how much you withdraw and what happens along the way.

A retiree who needs only $15,000 or $20,000 from a $500,000 portfolio during the first year starts from a very different position than someone who needs $40,000 or $50,000.

Investment growth can help extend the portfolio’s life, while inflation, taxes, poor markets and larger withdrawals can work in the opposite direction.

That’s why the answer can’t responsibly be reduced to “$500,000 lasts exactly X years.”

Could $500,000 Last the Rest of Your Life?

It may be possible, particularly if Social Security or a pension covers a large portion of your basic expenses and you don’t need large withdrawals from the portfolio.

It also helps if you can adjust discretionary spending during difficult market periods rather than increasing withdrawals automatically regardless of what is happening to your investments.

But no responsible retirement projection can guarantee how long a market-based portfolio will last. The goal is to understand the range of possible outcomes and build enough flexibility into the plan to respond when reality differs from your assumptions.

What If the Numbers Don’t Look Good?

If your $500,000 appears to be under too much pressure, that doesn’t automatically mean retirement is impossible.

You have several levers you may be able to pull:

Reduce your spending target. Even a few thousand dollars less each year can reduce portfolio withdrawals.
Work a little longer. This provides more time to save and shortens the number of years your portfolio must support.
Work part-time after retiring. An extra $10,000 or $15,000 a year can significantly reduce early withdrawals.
Review when you claim Social Security. Your claiming age affects your monthly benefit.
Lower housing expenses. Housing can be one of the largest retirement costs.
Use flexible spending. Reducing discretionary withdrawals after poor market years can take pressure off the portfolio.

Sometimes the difference between a weak retirement plan and a much stronger one isn’t another $500,000 of savings. It can be several smaller changes working together.

So, How Long Will Your $500,000 Last?

Start with one simple calculation:

Your annual spending

− Social Security

− Pension and other dependable income

= What your investments need to provide

Then compare that number with your $500,000 portfolio.

If you need $15,000 during the first year, that’s a 3% initial withdrawal.

If you need $20,000, that’s 4%.

If you need $30,000, that’s 6%.

If you need $40,000, that’s 8%.

That calculation doesn’t tell you everything, but it tells you much more than the $500,000 balance alone.

Don’t Guess How Long Your Money Will Last

A simple calculator can divide $500,000 by your annual spending. Retirement, unfortunately, isn’t that simple.

Your actual plan may need to account for Social Security, inflation, taxes, changing expenses, investment returns, bad market sequences, Roth conversions, required minimum distributions and a retirement that could last 30 years or longer.

That’s why RetireNerd built the Portfolio Analyzer & Withdrawal Simulator.

You can enter your own savings, spending, Social Security and investment mix and see how your retirement behaves under different assumptions instead of relying on somebody else’s example.

Your $500,000 deserves more than a guess.

Frequently Asked Questions

How long will $500,000 last if I withdraw $2,000 a month?

At $2,000 per month, you would withdraw $24,000 per year. With no investment returns, inflation, taxes or changes in spending, $500,000 divided by $24,000 equals about 20.8 years. In real retirement planning, investment performance and changing withdrawals can make the actual result significantly different.

How long will $500,000 last if I withdraw $3,000 a month?

At $3,000 per month, annual withdrawals equal $36,000. Without investment gains, inflation, taxes or spending changes, $500,000 would mathematically cover about 13.9 years. A real invested portfolio could have a very different outcome.

How much is 4% of $500,000?

Four percent of $500,000 is $20,000. That equals approximately $1,667 per month during the first year. The traditional 4% approach does not simply mean withdrawing exactly $20,000 every year forever; the classic concept includes subsequent adjustments for inflation.

Can $500,000 last 30 years in retirement?

It can, depending on withdrawals, investment performance, inflation, taxes and other income. Someone receiving enough Social Security to keep portfolio withdrawals relatively low has a much different chance of making $500,000 last than someone relying heavily on the portfolio for everyday expenses.

Can I live on $500,000 plus Social Security?

Possibly. The key calculation is the difference between your spending and Social Security income. If Social Security covers most of your expenses, your $500,000 portfolio may only need to fill a relatively small annual gap.

Does $500,000 include my house?

For the examples in this article, $500,000 refers to investable retirement savings rather than home value. Home equity can still be an important part of your overall financial picture, but it isn’t automatically available to pay everyday expenses unless you sell the home, borrow against it or use another strategy to access the equity.

Is the 4% rule guaranteed to make my money last?

No. The 4% rule is a retirement-planning guideline, not a guarantee. Market returns, inflation, taxes, portfolio allocation, retirement length and spending decisions can all affect the outcome.

Important: The examples in this article are simplified illustrations and aren’t predictions or guarantees. Investment returns fluctuate, and retirement outcomes depend on taxes, inflation, spending, Social Security, portfolio allocation, healthcare costs and many other factors. RetireNerd provides educational information and tools, not individualized investment, tax or financial advice.