Last Updated: May 2026
What Is The 4 Percent Rule For Retirement: Complete May 2026 Guide
By Marcus Hale — 14 years self-educating in personal finance, former bank loan officer, Denver Colorado
The Short Answer
The 4 percent rule is a retirement withdrawal guideline suggesting that retirees can withdraw 4 percent of their portfolio in year one, then adjust that dollar amount for inflation each year, and historically have a strong chance of not running out of money over a 30-year retirement. It came from a 1994 study by financial planner William Bengen and has been a cornerstone of retirement planning conversations ever since. It is not a guarantee — it is a starting framework, and your situation will likely require adjustment. For investors who want a low-cost platform to build the kind of diversified portfolio the 4 percent rule was designed around, consider starting here:
Who This Is For ✅
- ✅ Pre-retirees in their 40s or 50s who are trying to figure out how much they actually need to save before they can stop working
- ✅ Early retirees or FIRE (Financial Independence, Retire Early) planners who need a rough framework for sustainable withdrawals
- ✅ People who already have retirement savings and want to understand how to think about drawing them down without running out of money
- ✅ Anyone who has heard “the 4 percent rule” mentioned and wants to understand what it actually means before taking it as gospel
Who Should Skip This Guide ❌
- ❌ Anyone looking for personalized retirement income advice — this is general financial education, not a plan tailored to your situation. A certified financial planner (CFP) can build something specific to your needs
- ❌ Retirees who are already drawing from accounts and need help optimizing their tax strategy around withdrawals — that requires a CPA or tax professional
- ❌ People with pensions, annuities, or substantial Social Security income as their primary retirement source — the 4 percent rule was built around portfolio-based retirement, and these income streams change the math significantly
- ❌ Anyone expecting a guaranteed formula — this rule has meaningful limitations, and if you need certainty, this guide will only frustrate you
How Marcus Evaluated These
I didn’t come to the 4 percent rule through a textbook. I came to it the way most working-class people do — late, after already making a lot of mistakes. In my 20s, I had no retirement savings, a pile of credit card debt, and genuinely no idea what a portfolio even was. When I finally started reading seriously about retirement planning, the 4 percent rule was everywhere. I spent years cross-referencing it against the original Bengen research, subsequent studies from institutions like Morningstar and the Stanford Center on Longevity, and what I saw on loan applications at the bank — where I watched people in their 60s still carrying significant debt with no real savings plan.
What I evaluated here is not which brokerage is the best in an absolute sense. It’s which platforms give everyday investors — people like my wife and me, working with real income constraints in a city like Denver — the most accessible, low-cost path to building the kind of diversified portfolio the 4 percent rule assumes you have. I looked at fee structures, investment minimums, account types, and whether the platform makes it realistic to actually stay invested through market volatility. I did not receive compensation from any of these platforms to include them, and I recommend verifying all current rates, fees, and features directly with each provider before opening an account, as these details change frequently.
Quick Reference Breakdown
| Option | Best For | Monthly Fee | Minimum Balance | Marcus’s Rating |
|---|---|---|---|---|
| SoFi Invest | New investors wanting no-fee access to stocks and ETFs | $0 | $1 | 4.5/5 — strong for beginners building a long-term base |
| Fidelity | Investors who want zero-expense-ratio index funds and deep tools | $0 | $0 | 4.8/5 — hard to beat for long-term, hands-on investors |
| Vanguard | Buy-and-hold investors focused on low-cost index investing | $0 | $0 for most accounts | 4.6/5 — built for exactly the kind of portfolio the 4% rule assumes |
| Betterment | Hands-off investors who want automated rebalancing | $0–$4/mo depending on plan | $0 | 4.2/5 — excellent automation, but less control for DIY investors |
| Charles Schwab | Investors wanting full-service access plus strong index options | $0 | $0 | 4.5/5 — well-rounded with strong retirement account support |
Fees and minimums change frequently — verify directly with each institution before opening an account.
Top Picks: Marcus’s Recommendations
| Pick | Why Marcus Recommends It | Best For | One Drawback |
|---|---|---|---|
| Fidelity | Zero-expense-ratio index funds, no account minimums, and retirement tools that actually explain what you’re looking at | Investors at any stage who want to build a low-cost, diversified retirement portfolio | The platform can feel overwhelming to brand-new investors |
| Vanguard | Pioneered index investing and still offers some of the lowest cost funds available — directly aligned with the diversified, low-cost approach Bengen’s research assumed | Long-term, buy-and-hold investors who don’t need to trade frequently | Interface is functional but less modern than competitors |
| Betterment | Automates the diversification and rebalancing that the 4 percent rule depends on, without requiring you to manage it yourself | Investors who want a set-it-and-mostly-forget-it approach | Less flexibility for investors who want specific fund control |
Verify current availability directly with the provider, as financial products change frequently.
What Marcus Likes ✅
- ✅ The 4 percent rule gives you a concrete savings target to work backward from — if you need $40,000 per year in retirement, the math suggests a $1,000,000 portfolio as a rough benchmark
- ✅ Historically, Bengen’s original research showed strong portfolio survival rates over 30-year periods using a balanced stock and bond allocation — the Federal Reserve’s research on long-term equity returns supports the logic behind this
- ✅ It’s simple enough to actually use as a planning starting point, which is valuable when most retirement planning conversations get complicated fast
- ✅ The rule has held up reasonably well across multiple market cycles, though past performance does not guarantee future results
- ✅ It naturally pushes investors toward diversified, low-cost portfolios — the kind of approach that tends to reduce unnecessary drag from fees over decades
Where These Fall Short ❌
- ❌ The 4 percent rule was built around a 30-year retirement horizon — if you retire at 55 or earlier, you may need a more conservative withdrawal rate, possibly 3 to 3.5 percent, to account for a longer timeline. Verify this with a CFP for your specific situation
- ❌ The original Bengen research used historical U.S. market returns — some researchers, including those at Morningstar, have raised questions about whether future returns will mirror historical ones given current market valuations and lower bond yields
- ❌ It doesn’t account for variable spending — most real retirees don’t spend the same amount every year. Healthcare costs, home repairs, and family needs make actual withdrawals messier than a formula suggests
- ❌ Sequence of returns risk is real and underappreciated — if markets drop significantly in your first few years of retirement, withdrawing at 4 percent can accelerate portfolio depletion in ways the rule’s average-case projections don’t fully capture
How I Tested These
I evaluated these platforms by reviewing their publicly available fee structures, fund offerings, account minimums, and retirement-specific tools as of early 2026. I also cross-referenced user experience reports, considered the types of accounts available (IRA, Roth IRA, taxable brokerage), and thought through how each platform would serve someone trying to build and eventually draw down a retirement portfolio in line with the 4 percent framework. I do not have paid relationships with any of these platforms, though MoneyCompass may earn a referral fee if you open an account through links in this article — that does not influence my editorial assessment. All fees and features should be verified directly with each provider before making any decision.
Marcus’s Verdict
The 4 percent rule is a useful starting point — not a finish line and definitely not a guarantee. If you’re in your 40s trying to figure out what number you’re actually saving toward, it gives you something concrete to work with. For my own family in Denver, knowing that rough framework helped us get serious about closing the gap between where we were and where we needed to be. But I want to be honest: the closer you get to retirement, or the earlier you plan to retire, the more this rule needs to be stress-tested with a certified financial planner who can model your specific income, spending, Social Security timing, and health situation. This guide gives you the vocabulary and the context — a professional helps you build the actual plan.
If you’re in the accumulation phase right now — still building — the most important thing is getting into a low-cost, diversified portfolio and staying there. Platforms like Fidelity and Vanguard were essentially built for that approach. If you want something more automated while you figure things out, Betterment handles the rebalancing for you. Any of these can serve as a starting point, but the account you actually open and fund matters more than which logo is on it.
Authoritative Sources
- Consumer Financial Protection Bureau
- Investopedia Personal Finance Education
- NerdWallet Personal Finance Research