I Followed the 4% Rule – and Still Ran Out of Money

The notorious withdrawal rule seemed foolproof. You know the one. Pull out four percent of your retirement nest egg in year one, then bump it up each year for inflation. Your golden years would be secure, they said. Decades of historical data backed it up, they promised.

Countless retirees bought into this conventional wisdom only to watch their carefully planned retirement savings evaporate faster than anyone anticipated. Here’s the uncomfortable truth behind why this once-sacred rule has left many Americans scrambling.

The Math Looked Perfect on Paper

Financial planner Bill Bengen developed the 4% rule back in 1994, suggesting an annual withdrawal rate of 4% would see investors through retirement in any economic scenario. The concept was elegantly simple and gave millions of Americans a tangible target. Honestly, it felt like having a roadmap when everything else about retirement seemed impossibly complex.

That “safe” withdrawal rate declined to 3.7% in 2025, from 4% in 2024, due to long-term assumptions in the financial markets, according to Morningstar research. Let’s be real, though. Most people planning their retirement years ago didn’t anticipate that what seemed bulletproof would need constant recalibration.

The Inflation Monster Nobody Saw Coming

The Consumer Prices Index for all items rose 2.9 percent from December 2023 to December 2024, yet those numbers don’t capture the full story. Recent years brought inflationary spikes that shredded purchasing power faster than anticipated. While the record 8.7% Social Security cost-of-living adjustment that went into effect for 2023 may have seemed nice, the extra money was mostly claimed by higher prices.

Here’s the thing about inflation: it doesn’t hit everything equally. Prices for meats, poultry, fish, and eggs increased the most, up 4.2 percent. Within this larger category, egg prices rose 36.8 percent. The 4% rule assumed neat, predictable inflation adjustments. Reality delivered chaos instead. Your withdrawal might technically increase with inflation, but the specific goods and services retirees need often outpaced those averages dramatically.

The Sequence of Returns Nightmare

The order and timing of poor investment returns can have a big impact on how long your retirement savings last. This concept destroys the notion that average returns tell the whole story. Two retirees with identical portfolios experiencing the same market conditions can end up in wildly different financial situations simply because of when they retired.

Sequence of returns risk is the danger that poor investment returns early in retirement, combined with ongoing withdrawals, will significantly reduce a portfolio’s value and limit its ability to recover. Imagine retiring in late 2007, right before the financial crisis. You’d be pulling money from a portfolio getting hammered, selling assets at rock-bottom prices just to cover living expenses. Meanwhile, someone retiring five years later enjoyed the recovery’s massive gains.

Even though the total average returns are the same, that one change in the sequence makes all the difference between financial security and running out of money years early. This single factor has blindsided countless retirees who thought they’d done everything right.

Healthcare Costs Devoured the Budget

A 65-year-old retiring this year can expect to spend an average of $165,000 in healthcare and medical expenses throughout retirement, according to Fidelity Investments’ 23rd annual Retiree Health Care Cost Estimate. That figure represents nearly a five percent jump from just the previous year.

The truly shocking part? Recent Fidelity research found the average American estimates costs will only be about $75,000 – less than half of Fidelity’s calculation. The 4% rule never adequately accounted for this massive expense category. The typical American paid about $6,300 a month for a home health aide and $8,700 a month for a semi-private room in a nursing home in 2023.

One serious illness or extended care need obliterates carefully calculated withdrawal rates. Medicare doesn’t cover everything, and the gaps are staggering.

The Rule Assumes You’re Inflexible

The 4% rule doesn’t include taxes or investment fees, and applies to a “very specific” investment portfolio – a 50-50 stock-bond mix that doesn’t change over time. It’s also “rigid,” assuming you never have years where you spend more, or less, than the inflation increase. Real life doesn’t work that way.

You need a new roof. Your kid needs financial help. You want to take that dream vacation before your knees give out completely. The rule also maximizes sequence-of-returns risk because retirees never adjust spending in relation to how their portfolios are performing. It treats every retirement year identically when experience tells us spending patterns shift dramatically as we age.

Taxes Took a Bigger Bite Than Expected

Each dollar Doug withdraws from his IRA is taxable. Over his retirement years, Doug’s estimated cumulative federal income taxes exceed $470,000. Thus, to cover the taxes, he must withdraw more and consume his financial capital faster than someone with tax-diversified accounts.

The 4% rule calculation doesn’t factor in where your money lives. Traditional 401(k)s and IRAs get taxed upon withdrawal. Every dollar you take out is actually less than a dollar in spending power. This forces you to withdraw more than planned, accelerating portfolio depletion. Required minimum distributions eventually compound this problem, potentially pushing you into higher tax brackets precisely when you can least afford it.

Bond Yields Collapsed the Foundation

Lower bond yields equate to decreased sustainability of a 4% inflation-adjusted withdrawal. While recent bond yields have increased, the long-term government bond yield in December of 2023 was 4.2%. From 1960 to 1991 the average bond yield was 7.63%, and the average yield from 1992 to 2023 was 4.0%.

The original 4% rule leaned heavily on the higher bond returns available in the 1990s. Wade Pfau made the following assessment: “I think there is something like a 65% to 70% chance that the 4% rule works for today’s retirees rather than being a near certainty.” Pfau places the actual safe withdrawal rate closer to 3%. That’s a massive difference when stretched across three decades of retirement.

Market Volatility Exceeded Historical Norms

Recent market swings have been nothing short of breathtaking. From 2007 to 2017, your average return was nearly zero if you were invested in an S&P 500 index fund. You earned nothing. In 2023 and 2024, the S&P 500 surged, delivering double-digit returns for two years.

Wild fluctuations destroy portfolio stability when you’re making regular withdrawals. The problem isn’t just bear markets. It’s the whiplash between extreme highs and devastating lows. If the economy enters a long recessionary period, retirees could be at an increased risk of running out of money. The 4% rule assumed smoother, more predictable market behavior based on 20th-century historical patterns that simply haven’t held.

You Lived Longer Than Expected

Modern medicine and healthier lifestyles mean many retirees outlive the 30-year horizon the 4% rule was designed for. That’s wonderful news for living longer but terrible news for retirement savings. The 4% rule is specifically designed for a 30-year retirement.

Retire at 62, live to 95, and suddenly you need funds for 33 years, not 30. Those extra years can drain any cushion you thought you’d built. Earlier retirement compounds this problem. Retiring in your 50s usually calls for a more conservative withdrawal approach. Assuming you’re healthy and stay that way, your retirement can last 35 years or longer. Over that span, even modest overspending early on can dramatically increase the risk of running out of money. For that reason, many financial models suggest starting with a withdrawal rate closer to 3%.

The Real-World Reckoning

Financial theory meets harsh reality when actual retirees face depleting portfolios. Retirees who encountered poor returns in the first five years of retirement and didn’t adjust their spending downward were much more likely to exhaust their savings than those who came through the first five years with positive returns. The 4% rule doesn’t prepare people for the psychological shock of watching their nest egg shrink rapidly.

Bear markets or periods of high inflation, especially at the outset of your retirement, could either force you to take more modest withdrawals or increase the risk that you’ll run out of money. Many retirees find themselves in impossible positions – continue withdrawing at planned rates and risk total depletion, or slash spending and sacrifice the retirement lifestyle they worked decades to achieve. Neither option feels remotely acceptable when you’re living it.

The 4% rule gave retirees false confidence, a seemingly safe harbor that turned out to be anything but secure. Markets evolved. Costs exploded. Life expectancy increased. The rule stayed static while everything around it transformed. Those who followed it religiously without adapting found themselves facing financial crises they never imagined possible. What seemed like prudent planning became a cautionary tale about the dangers of relying too heavily on simplified rules in an increasingly complex financial landscape. So did this surprise you? What would your plan look like now?