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How Much Do I Need to Retire? The Real Number Based on Your Lifestyle (2026)

This is the question everyone eventually asks — and almost nobody gets a straight answer.

"It depends" isn't helpful. "Save as much as you can" isn't either. What people actually need is a framework: a way to translate their spending habits into a portfolio target, run that number against the math, and figure out how far they are from the finish line.

That's what this article is. We're going to cover the 4% rule (where it came from and why it still matters), the 25x rule, real scenarios at $1M, $2M, and $3M, what inflation does to your number, and why the sequence of your market returns matters as much as the average.

And at the end, I'll tell you the free tool I use to track all of it.

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The Foundation: William Bengen and the 4% Rule

In 1994, a financial planner named William Bengen published a paper that changed retirement math forever. Bengen analyzed historical U.S. market data going back to 1926 and asked a simple question: what's the highest withdrawal rate a retiree could have sustained across every historical 30-year period without running out of money?

His answer: 4% of the initial portfolio value, adjusted upward for inflation each year.

Bengen's methodology was specific. He was modeling a portfolio of 50–75% stocks and 25–50% bonds. He tested every possible 30-year retirement window in the historical data — retiring in 1926, retiring in 1930, retiring in 1950, and so on. In every case, a retiree withdrawing 4% initially and adjusting for inflation would have had enough money to last 30 years.

This became known as the 4% rule. And it gave us the 25x rule as its direct corollary: if you withdraw 4% per year, you need your portfolio to be 25 times your annual withdrawal (because 1 ÷ 0.04 = 25).

The practical translation:

• Need $40,000/year from your portfolio? You need $1,000,000.
• Need $60,000/year? You need $1,500,000.
• Need $80,000/year? You need $2,000,000.
• Need $120,000/year? You need $3,000,000.

Clean math. That's why it stuck.

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The $1M vs $2M vs $3M Reality Check

Let's run the scenarios against real life.

$1,000,000 Portfolio

Under the 4% rule, a $1M portfolio supports $40,000/year in withdrawals, adjusted annually for inflation.

If Social Security adds another $20,000–$25,000/year (the average SS benefit was around $22,000/year in 2025), your total household income in year one of retirement is $60,000–$65,000/year.

For a single person or couple in a lower cost-of-living area with a paid-off home, this is workable. For a couple in a high cost-of-living city with ongoing housing costs, it's tight.

The biggest risk with $1M: healthcare costs. If you retire before 65, you're paying for private health insurance out of pocket. Even subsidized ACA plans can run $800–$1,500/month for a couple in their late 50s. That's $10,000–$18,000/year — a significant slice of a $40,000 withdrawal.

$2,000,000 Portfolio

A $2M portfolio supports $80,000/year in withdrawals. Add Social Security and you're looking at $100,000–$110,000/year for a couple — a comfortable income by any measure in most U.S. cities.

At this level, sequence-of-returns risk is meaningful but manageable. You have more cushion to weather a bad first decade without permanently impairing the portfolio.

This is the target number most financial planners point people toward — not because $2M is magic, but because $80,000/year in withdrawals covers median American household expenses with room for travel, healthcare surprises, and a few nice dinners.

$3,000,000 Portfolio

A $3M portfolio supports $120,000/year in withdrawals. At this level, the math becomes comfortable enough that most researchers would say you could push the withdrawal rate slightly above 4% if needed.

The bigger issue at $3M is Required Minimum Distributions (RMDs) starting at age 73. If most of that money is in pre-tax accounts (traditional 401k, traditional IRA), you'll be forced to withdraw — and pay taxes on — a certain amount each year regardless of whether you need it. This is why Roth conversions in your 50s and early 60s make sense: shifting money to Roth accounts before RMDs kick in gives you more control over your taxable income in retirement.

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What Inflation Does to Your Number

Here's the part most retirement calculators understate.

At 3% inflation, the cost of living doubles roughly every 24 years. A 62-year-old retiring today and living to 87 needs their purchasing power to survive 25 years of inflation.

That $60,000/year lifestyle in 2026 will cost $120,000/year by 2050 at 3% annual inflation.

The 4% rule accounts for this by adjusting withdrawals upward each year. But your portfolio has to grow enough to fund those increasing withdrawals. If markets underperform during your retirement — especially in the early years — the math can break down.

Practical implication: Don't calculate your retirement number based on today's expenses alone. Think about what your life will cost in 20 years. If anything, healthcare costs tend to inflate faster than general CPI as you age.

The other inflation trap: people underestimate how much their spending changes in retirement. The classic pattern is the "retirement spending smile" — you spend more in your early active retirement years (travel, hobbies, family), spending dips in your 70s, then spikes again in late retirement when healthcare costs dominate.

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Sequence-of-Returns Risk: The Retirement Killer Nobody Talks About

Two people retire on the same day with $1,000,000 portfolios. They have identical asset allocations. Over the next 30 years, the market delivers exactly the same average annual return for both of them.

But one person retires into the first year of a bull market. The other retires into the first year of a bear market.

The outcomes can differ by hundreds of thousands of dollars. Or the difference can be surviving retirement comfortably versus running out of money at 83.

This is sequence-of-returns risk. It exists because order matters when you're withdrawing. A 30% market drop in year one forces you to sell more shares at low prices to fund your withdrawal. Fewer shares remain to recover when markets rebound. The recovery can never fully compensate for the shares you sold at the bottom.

In contrast, a 30% drop in year 20 of retirement matters much less — your portfolio has had two decades of compounding and withdrawals, and you have fewer years remaining.

What reduces sequence-of-returns risk:

• Keeping 1–2 years of expenses in cash so you don't sell equities in a down market
• A bond allocation that you draw down during equity crashes, leaving stocks to recover
• Flexible spending — ability to reduce withdrawals modestly in bad market years
• Delaying Social Security — locking in higher guaranteed income reduces how much you need to pull from your portfolio each year

This is exactly why the timing of your Social Security claim matters so much — and why a tool that models your specific retirement scenario is more valuable than a rule of thumb.

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Updating the 4% Rule for 2026

Bengen himself has updated his work over the years. In a 2020 paper, he revised his estimate of the safe withdrawal rate upward to 4.7% when small-cap value stocks are included in the portfolio mix. Other researchers have found rates ranging from 3.3% to 5% depending on assumptions about bond returns, inflation, and time horizon.

The consensus takeaway:

• 30-year retirement (retire at 65, plan to 95): 4% is still a reasonable starting point
• 40+ year retirement (retire at 55 or earlier): Consider 3.5% to be safer
• Conservative markets / high starting valuations: Some researchers advocate 3.3–3.5%
• Flexible spending strategy: Can push safely above 4% if you're willing to reduce withdrawals modestly in bad years

There's no magic number that works for everyone. But having a target — even an imperfect one — is infinitely better than having no target at all.

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How to Find Your Number

Here's the framework:

Step 1: Calculate your annual retirement expenses. Be honest. Include housing (or rent), food, healthcare, transportation, travel, hobbies, insurance, and a buffer.

Step 2: Subtract guaranteed income. Social Security, pension, rental income, part-time work income. Whatever you have that doesn't depend on your portfolio.

Step 3: Multiply the gap by 25. The remaining amount your portfolio needs to cover × 25 = your baseline retirement number.

Step 4: Adjust for your timeline. If you're retiring before 65, use 28x instead of 25x to account for a longer horizon. If you're retiring at 70 with delayed SS benefits, 22x might be sufficient.

Step 5: Run the actual scenarios. This is where tools matter.

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Track Your Number: Use Empower (It's Free)

I've been using Empower (formerly Personal Capital) for years and it's the best free tool I know for this specific problem.

Here's what it actually does: you link all your accounts — 401k, IRA, brokerage, bank accounts — and Empower shows your total net worth, investment allocation, and projected retirement date based on your current savings rate. The Retirement Planner runs Monte Carlo simulations across thousands of market scenarios and tells you the probability of your current plan succeeding.

It's not perfect and it will try to get you on a call with their wealth management team (you can ignore that). But the free dashboard is genuinely excellent — better than most paid tools I've tried.

What it tells you that most calculators don't: it uses your actual account balances and contribution rates, not hypothetical numbers. When I logged in and ran it the first time, it showed me I was projected to run out of money at 83 under my existing savings rate. That was uncomfortable. That's also exactly the kind of discomfort that changes behavior.

Connect your accounts to Empower — free forever →

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Run Your Own Numbers

For a quick estimate right now, use the calculator at valueofstock.com/calculator — enter your current savings, monthly contribution, expected retirement age, and target withdrawal, and it'll project your retirement trajectory.

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The Bottom Line

There's no single number that applies to everyone. But the framework is clear:

• The 25x rule gives you a starting target
• The 4% rule tells you how much you can withdraw annually
• Inflation means your expenses in retirement will be significantly higher than today
• Sequence-of-returns risk means when bad markets hit matters as much as how often
• Your actual number depends on your spending, your timeline, and your guaranteed income sources

The most important thing you can do right now is know where you stand. Not approximately — actually. Which means tracking every account in one place and running real projections.

Start with Empower — free forever →

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Want the Full Retirement Toolkit?

My Retirement Planning Cheat Sheet covers the 4% rule scenarios, the 25x rule table for different income levels, a Roth vs Traditional decision tree, and the Social Security break-even calculator — all in one printable PDF.

Get the Retirement Toolkit on Gumroad →

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Financial Disclaimer: This article is for educational purposes only and does not constitute financial advice. Retirement planning involves complex decisions that depend on your individual circumstances, tax situation, and risk tolerance. Consult a qualified financial advisor before making investment decisions. Past market performance does not guarantee future results. Withdrawal rate studies are based on historical data and are not guarantees of future portfolio survival.

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Harper Banks writes about personal finance and long-term investing at valueofstock.com. Follow on Twitter/X: @PoorManStock