What Is a Safe Withdrawal Rate for Early Retirement?

3.3%. That's Morningstar's estimate of a safe starting withdrawal rate for a 40-year retirement. It's a lot lower than the 4% most people have heard of. So if you're asking what a safe withdrawal rate for early retirement is, here's the short answer: probably less than 4%. Plan on roughly 3.3% to 3.5% if you need your money to last 35 to 40 years, and possibly lower if you need it to last 50 or 60.

The reason is time. The more years your portfolio has to cover, the more bad markets it has to survive. Below we'll go through where these numbers come from, why respected researchers land on different figures, and what "safe" actually means.

The short answer: a safe withdrawal rate for early retirement is below 4%

Most well-known withdrawal research assumes a 30-year retirement. That fits someone who stops working at 65. It doesn't fit someone who stops at 45.

Here is what several sources suggest as the horizon gets longer:

The savings multiple is just 1 divided by the rate. At 4%, you need 25 times your annual spending. At 3.3%, you need about 30 times. For someone spending $40,000 a year, that's a difference of roughly $200,000.

A few notes on the sources:

• Morningstar puts its 2026 base case at 3.9%, up from 3.7% a year earlier. That figure assumes fixed withdrawals adjusted for inflation, a 30-year horizon, 30–50% in stocks and a 90% success rate (Morningstar, What's a Safe Retirement Withdrawal Rate for 2026?, drawn from The State of Retirement Income 2025, Dec 2025).
• Morningstar's early-retirement estimates of 3.5% for 35 years and 3.3% for 40 years use a 40/60 stock/bond mix and the same 90% success threshold (Morningstar, How Much Can You Safely Withdraw If You Retire Early?).
• The 50- and 60-year figures come from a ChooseFI community post that puts fail-safe rates at 3.82%, 3.58%, 3.35% and 3.25% for 30, 40, 50 and 60 years. Treat it as a secondary source. It does line up with Early Retirement Now's long-running series, which found 60-year safe rates below 3.25% even with 75–100% in stocks.

Why the 4% rule doesn't stretch to 40 or 50 years

The 4% rule came out of historical backtests of 30-year retirements. Its question was simple: what starting withdrawal, raised each year for inflation, would have lasted through every 30-year stretch in market history?

Add 15 or 20 years and things change. Your portfolio has to get through more recessions, more inflation spikes and more stretches of flat returns. Each extra year is one more chance for something to go wrong, and you have to keep withdrawing the whole time.

The math also gets less forgiving. Over 30 years, a retiree can draw the portfolio down toward zero by the end. Over 50 years, the money has to keep growing for much longer before it can safely be spent down. Early Retirement Now covers this in Part 2 of its guide. If you want to leave the principal intact for heirs or as a cushion, the safe rate drops further.

Why the experts give different numbers

You'll see 3.25%, 3.3%, 3.9%, 4% and 4.7% quoted, sometimes all in the same week. They aren't contradicting each other. They're answering different questions.

There are four main reasons the numbers differ:

1. History vs. forecasts. Bengen looks back at what actually happened. Morningstar uses expected future returns, which are currently more modest than the long-run historical average.
2. Portfolio mix. Bengen raised his worst-case rate from 4.15% to 4.7% partly because he tested a more diversified portfolio (Advisor Perspectives, Aug 2025).
3. Taxes. Bengen's rates are before taxes, as if all the money sat in a tax-free account. Your real spending power depends on which accounts you draw from.
4. Horizon. The headline numbers from both Bengen and Morningstar are for 30 years. Neither 4.7% nor 3.9% was designed for someone retiring at 45.

The takeaway: start with the figure built for your timeline, not the one that makes the headlines.

What "90% success" actually means

This is the part most articles skip.

A 90% success rate means that in 90 out of 100 simulated futures, the money lasted the full horizon. In the other 10, it didn't. It does not mean you're 90% safe in some general sense, and it says nothing about how the failures happen.

Some failures look like running out at 88 on a plan meant to reach 90. Others are worse. And many "successful" futures end with far more money than you started with. That usually means the retiree could have spent more along the way.

That's why a single average-return projection can mislead you. Markets don't deliver the average every year. They deliver a sequence, and the order of good and bad years matters a great deal.

A Monte Carlo simulation tests that directly. In plain terms, it runs your plan through many possible market futures, some calm and some rough, and counts how many of them stay funded. Our calculator runs your savings through 1,000 simulated futures and gives you that count as a percentage. A probability, not a promise.

The risks that hit early retirees hardest

Bad markets in the first few years

Analysts call this sequence-of-returns risk. A downturn early in retirement hurts much more than the same downturn 20 years in, because you're selling assets at low prices while the portfolio is at its largest. Early retirees face this risk with more years still ahead of them.

Health care before Medicare

Fidelity estimates that a 65-year-old retiring in 2025 will need $172,500 for Medicare premiums, deductibles and prescriptions over retirement. That figure leaves out long-term care entirely (Fidelity Investments, 2025 Retiree Health Care Cost Estimate, Jul 2025). If you retire at 50, you also have to pay for every year of coverage before Medicare. That cost belongs in your spending number, not in a footnote.

The gap before Social Security

Early retirees can face a long stretch with high spending and very little outside income. Social Security is still years away, and some retirement accounts may not be open to you without penalties. Early Retirement Now's research found that Social Security doesn't substantially raise the safe rate for early retirees. It arrives too late to rescue the risky early years.

Living longer than you planned

The Social Security Administration says about one in three 65-year-olds may live to at least 90 (Retirement Information for Medicare Beneficiaries, 2026). Someone retiring at 45 who plans to 90 is covering 45 years. A plan that ends too early quietly bets you won't be one of the long-lived ones. That's why the plan you build here runs to 95 by default, and you can extend it.

Starting valuations

Mad Fientist and ERN both point out that when stock prices are high relative to earnings at the start of retirement, historical safe rates have tended to be lower. You can't choose the market you retire into. You can account for it.

Ways to support a higher starting rate

A lower rate isn't the only option. The research points to a few levers:

• Be flexible with spending. Morningstar's research finds that flexible methods, which adjust withdrawals based on how the portfolio performs, support higher starting rates than rigid inflation-adjusted withdrawals. Guardrail strategies are one popular version (Nasdaq, 4% Rule vs. Guardrails). The trade-off is that your income will vary from year to year.
• Plan for spending to fall gradually. ERN's analysis suggests that planning for withdrawals that decline slowly over time could raise the starting rate by about 0.25 to 0.50 percentage points.
• Rethink an all-stock portfolio. ERN found that 100% stocks doesn't maximize the safe rate over very long horizons. Some diversification helps.
• Decide whether you'll spend the principal. Spending the portfolio down supports a higher rate than keeping it intact.
• Build in part-time income or a later start. Each year of earned income in the early years takes pressure off the portfolio when it's most exposed.

None of these is free. Each one swaps some certainty or comfort for a higher paycheck. Whether that's a good trade depends on your situation.

How to find your own number

Research tables give you a starting point. They don't give you your number.

Your number depends on your age, your savings, what you actually spend, how long the plan has to run, and how you'd react to a bad first few years. EBRI's 2025 Retirement Confidence Survey found that only 52% of workers have estimated the monthly income they'll need in retirement (Fact Sheet 3). If you haven't done it yet, start there.

Then test it. Enter three numbers: your age, what you've saved and what you spend each month. See how many of 1,000 simulated futures stay funded. If the answer raises more questions, ask William, our AI planner: "Am I on track?" or "What's a sustainable spend for me?" He shows his work.

It's planning software, not advice. It's a much clearer starting point than guessing, though.

Show my answer →

Frequently asked questions

Is the 4% rule safe for early retirement?

Usually not as-is. The 4% rule was built for roughly 30-year retirements. For longer horizons, Morningstar estimates about 3.5% for 35 years and 3.3% for 40 years, at a 90% success rate with a 40/60 stock/bond mix.

How much do I need saved to retire early?

Divide 1 by your withdrawal rate. At 4% you need about 25 times your annual spending. At 3.3% to 3.5%, which fits a 35–40 year retirement, you need roughly 29 to 30 times. For 50- to 60-year horizons, some analyses suggest 30 to 33 times.

Why does Bill Bengen say 4.7% while Morningstar says 3.9%?

They answer different questions. Bengen's 4.7% is a historical worst case for a diversified portfolio over 30 years, before taxes. Morningstar's 3.9% uses forward-looking return forecasts and counts a plan as safe if it stays funded in 90% of simulations. Neither figure was designed for retirements much longer than 30 years.

What does a 90% success rate mean in retirement planning?

In 90 of every 100 simulated market futures, the money lasted the full planned horizon. In the other 10 it ran out at some point. It's a probability, not a guarantee, and many successful futures end with money left over.

Does Social Security raise the safe withdrawal rate for early retirees?

Not by much. Early Retirement Now's research found Social Security doesn't substantially boost the safe rate for early retirees, because benefits start years after the riskiest early period of retirement.