The Rule Everyone Talks About
If you’ve ever Googled “How much can I safely withdraw in retirement?” you’ve probably run into the 4% rule. It’s one of the most widely cited retirement planning shortcuts, and for good reason — it’s simple and gives people a ballpark number.
But here’s the problem: retirement is more complex than a one-size-fits-all formula. The 4% rule was created in the 1990s based on specific assumptions about market returns, interest rates, and life expectancy. A lot has changed since then.
So, does the 4% rule still work in 2025? Let’s dive in.
1. What Is the 4% Rule?
The 4% rule originated in the 1990s when financial planner William Bengen studied historical market returns. He wanted to answer one big question: “How much can someone withdraw from their retirement portfolio each year without running out of money?”
Here’s the concept:
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In your first year of retirement, withdraw 4% of your total portfolio.
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Each year after that, increase the withdrawal by inflation.
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Based on historical data, this should make your money last at least 30 years.
Example:
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$1,000,000 portfolio.
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Year 1 withdrawal = $40,000.
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Year 2 = $40,000 + inflation adjustment.
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Continue for 30 years.
The result? According to Bengen’s study, retirees following this method historically would not have run out of money over a 30-year retirement.
2. Why the 4% Rule Became So Popular
There are three reasons the 4% rule spread like wildfire:
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Simplicity. No complex calculations — just multiply your retirement savings by 4% and you’ve got a spending target.
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Confidence. Retirees felt safer knowing there was a tested guideline for withdrawals.
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Quick math. It gave people an easy way to estimate their retirement “number.” For example:
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Want $80,000/year? You’ll need about $2 million.
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Want $40,000/year? You’ll need about $1 million.
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It became a go-to rule of thumb for financial independence and early retirement communities (FIRE), too.
3. The Flaws in the 4% Rule
While the 4% rule is useful as a benchmark, it’s not bulletproof. Here’s why:
Market Conditions Have Changed
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The original research assumed higher bond yields than what we see today. In the 1990s, bonds were yielding 6–7%. In 2025, many bonds yield 3–5%.
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Lower yields mean portfolios may not sustain the same withdrawal levels.
Longevity Risk
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When the rule was developed, planning for a 30-year retirement was reasonable. Today, many people live well into their 90s. A 40-year retirement horizon isn’t unrealistic.
Sequence of Returns Risk
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The order of returns matters. If you retire during a bear market and withdraw 4% as your portfolio drops, you risk running out of money even if long-term averages look good.
Spending Isn’t Linear
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Real retirees don’t spend in a steady, inflation-adjusted line. Spending often follows a “retirement smile” — higher in the early active years, lower in mid-retirement, and rising again with healthcare costs later.
These factors don’t make the 4% rule useless — they just mean it’s not a guarantee.
4. Does the 4% Rule Still Work in 2025?
So, does the 4% rule hold up today?
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As a starting point: Yes. It’s still a reasonable benchmark to estimate whether you’re in the ballpark for retirement readiness.
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As a guarantee: No. Market conditions, taxes, and your personal circumstances make it more complicated.
Many experts now suggest a range of 3–5% depending on:
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Your asset allocation.
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Your willingness to adjust spending.
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How long you expect retirement to last.
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The level of risk you’re comfortable taking.
For example:
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Conservative retirees or those with long time horizons may lean closer to 3%.
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Aggressive investors may push toward 5%.
5. Alternatives to the 4% Rule
Dynamic Withdrawal Strategies
Instead of sticking to a rigid 4%, you adjust based on portfolio performance. If markets do well, you take more. If markets struggle, you tighten the belt.
Guardrail Approaches
Set spending “guardrails.” For example:
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Withdraw more when your portfolio grows above a certain level.
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Cut back if it falls below a threshold.
This prevents overspending in down markets.
Bucket Strategies
Divide your portfolio into “buckets”:
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1–2 years of cash for immediate expenses.
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5–10 years of bonds for stability.
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Stocks for long-term growth.
This approach smooths volatility and gives retirees confidence.
Personalized Planning
The best solution is customized planning. Tools like Monte Carlo simulations (what I run in RightCapital) test thousands of market scenarios to see if your plan holds up, instead of relying on one historical average.
Conclusion: Use It as a Guide, Not a Rule
The 4% rule is a valuable benchmark, but it’s not a retirement plan.
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It can help you estimate whether you’re close to ready.
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But it doesn’t account for taxes, market volatility, healthcare costs, or your personal goals.
In 2025, a smarter approach is to view 4% as a starting point — then create a flexible, personalized plan that reflects your reality.
If you want to know what your personal “safe withdrawal rate” looks like, I help clients run customized retirement income plans every day. Schedule your free consultation at TheHourlyAdvisor.com.
Q&A Section (SEO-Optimized)
What is the 4% rule in retirement?
It’s a guideline that says you can withdraw 4% of your retirement portfolio in the first year and adjust for inflation each year after, making your savings last about 30 years.
Does the 4% rule still work in 2025?
It’s still a helpful starting point, but lower bond yields, longer lifespans, and market volatility make it less reliable as a hard rule.
What is a safe withdrawal rate today?
Most advisors suggest a range of 3–5%, depending on market conditions, risk tolerance, and retirement length.
Can the 4% rule fail?
Yes. If you retire into a bear market, live much longer than expected, or have a portfolio that’s too conservative it may fail.
What is better than the 4% rule?
Dynamic withdrawal strategies, guardrail approaches, bucket strategies, and customized financial planning provide more reliable results.