The 4% Retirement Rule Is Broken. Here Are the Real Numbers.

**Scenario 1: Robert, retiring at 62 with $1.2M** Robert had $1.2 million in a mix of 60% stocks, 40% bonds. The 4% rule said he could withdraw $48,000/year, adjusted for inflation, and almost certainly not run out of money for 30 years. For the first seven years, everything was fine. Then 2008 happened. His portfolio dropped 37%. He was withdrawing $54,000/year by then (inflation adjustments). A $720,000 portfolio losing 37% drops to $453,600. He withdrew $54,000 that year. Now he's at $399,600. The market recovered eventually, but his portfolio never fully did because he was selling shares at depressed prices to fund his withdrawals. Sequence-of-returns risk in action. By age 78, Robert's portfolio was $380,000. He cut spending to $36,000/year. He's fine — not starving, not miserable — but he's not living the retirement he planned either. The 4% rule "worked" in that he hasn't gone broke, but his quality of life took a hit he didn't anticipate. **Scenario 2: Linda and Tom, retiring at 58 with $900K** Early retirees face a different problem: their money needs to last 35-40 years, not 30. The 4% rule was never tested for 40-year horizons in the original study. Linda and Tom had $900K and needed $42,000/year (4.7% withdrawal rate — already above 4%). They planned to tighten their belts later. But "later" kept not arriving because healthcare costs kept climbing. At 58, they were spending $14,000/year on health insurance. By 67, it was $21,000/year (that's a 50% increase in 9 years). Medicare helped at 65, but supplements, Part D, dental, and vision still ran $8,400/year. Their actual healthcare inflation averaged 5.5% per year. General CPI averaged 2.8%. The 4% rule assumes one uniform inflation rate. Reality doesn't work that way. By year 25, their portfolio was $310,000 and they were 83 years old. Still alive, still spending. The math gets uncomfortable fast when you add another 10-15 years of life expectancy. **Scenario 3: The one where 4% actually worked** Derek retired at 65 with $800,000. He withdrew $32,000/year (exactly 4%). He lived modestly, had a paid-off house, Medicare covered most healthcare, and the market happened to have a strong first decade of his retirement (2010-2020). By age 85, his portfolio had grown to $1.1 million despite withdrawals. The 4% rule worked beautifully for Derek. He also had almost every variable break in his favor: late retirement, strong early returns, low healthcare costs, no long-term care needs. When everything goes right, 4% is generous. The question is whether you want to bet your retirement on everything going right. (I encourage every client to model their own scenario with our [retirement calculator](/en/calculator/retirement-calculator). Then model a bad scenario. Then model a catastrophically bad scenario. Plan for the third one.)

**Use 3% as your planning rate, not 4%.** This is the single most impactful change I make for clients. A 3% withdrawal rate has survived virtually every historical scenario including 40-year retirements, high-inflation periods, and poor sequence of returns. On a $1 million portfolio, that's $30,000/year instead of $40,000/year. Yes, it means you need more money to retire. But "needs more money" is better than "runs out of money." Use our [retirement calculator](/en/calculator/retirement-calculator) with 3% and see what you actually need. **The first 10 years determine everything.** Sequence-of-returns risk is the technical term. In plain English: if the market crashes in your first few years of retirement, you're selling more shares to cover withdrawals at lower prices. Those shares are gone forever. This is why I tell clients to keep 2-3 years of expenses in cash or short-term bonds when they retire. It's a buffer that lets you avoid selling stocks during a downturn. The cash drag costs you maybe 1-2% in returns during good years. It saves you from catastrophic depletion during bad ones. **Healthcare is your biggest unknown expense.** A couple retiring at 55 today needs to budget for 10 years of pre-Medicare health insurance. At current rates, that's $180,000-250,000 in premiums alone. Not copays. Not prescriptions. Just insurance. And premiums have been inflating at 5-6% per year, double general inflation. Use our [inflation calculator](/en/calculator/inflation-calculator) to see what healthcare costs look like in 15 years at 5.5% annual increases. The number will change your retirement timeline. **Your withdrawal rate should change every year.** The 4% rule implies a static withdrawal. Real retirements are dynamic. Some years you spend more (roof replacement, medical event, helping a kid). Some years you spend less. The flexible withdrawal strategy — taking less in down years, more in up years — significantly improves portfolio survival rates. I've seen simulations where a flexible 4% starting rate with guardrails (reduce spending if portfolio drops 20%, increase if it grows 50%) works as well as a rigid 3% rate.

Mistake one: ignoring taxes on withdrawals. If your $1 million is in a traditional 401(k), you'll pay income tax on every dollar you withdraw. A $40,000 withdrawal might only put $32,000 in your pocket after federal and state taxes. You thought you were using the 4% rule, but you're actually withdrawing 5% of your portfolio's gross value to net 4% after taxes. This alone explains why some "4% rule" retirees run into trouble. Mistake two: not accounting for Social Security timing. Every year you delay Social Security from 62 to 70, your benefit increases by about 8%. That's a guaranteed, inflation-adjusted, tax-advantaged return that no stock market investment can match. A client who delayed from 62 to 67 added $8,400/year in lifetime income. Over a 25-year retirement, that's $210,000 more in total benefits. Yet many retirees claim early because they "want what's theirs" without running the break-even calculation. Mistake three: forgetting required minimum distributions. At age 73 (as of 2025), you must start taking RMDs from traditional retirement accounts. If your portfolio has grown to $1.5 million, your first RMD is about $56,000. That might push you into a higher tax bracket, increase your Medicare premiums (IRMAA surcharges), and force you to withdraw more than you need. I've seen clients who planned for $40,000/year in spending get hit with $60,000 in RMDs they didn't want or need. The bottom line: the 4% rule is a reasonable starting point for a conversation, not a retirement plan. Your actual safe withdrawal rate depends on your age, health, tax situation, asset allocation, spending flexibility, and whether you're comfortable with a 95% or 99% success rate. The difference between those two percentages is usually 3-5 years of extra work or $200K-400K more in savings. Not trivial. But better to know now than to discover it at 78.