The 4% Rule Isn’t Dead. But Flexible Retirees May Be Able to Spend More.
For decades, retirees have been told to start by withdrawing roughly 4% of their portfolio in the first year of retirement and then increase that dollar amount with inflation. The rule became popular because it offered a simple answer to an intimidating question: how much can you spend without running out of money? It remains a useful benchmark, but increasingly, retirement research suggests that people willing to adjust spending can often start higher than a rigid rule would allow.
The trade-off is straightforward. A retiree who insists on receiving the same inflation-adjusted paycheck every year needs a more conservative starting point because the portfolio has to survive bad markets without help from spending cuts. A retiree who is willing to trim vacations, gifts or other discretionary expenses after market declines can give the portfolio breathing room and potentially spend more during stronger years.
The 4% Rule Was Never a Guarantee
The original 4% framework was designed as a historical stress test, not a promise that every retirement should begin at exactly 4%. It looked at how portfolios would have performed through difficult historical periods and asked what initial withdrawal could have survived a roughly 30-year retirement. The attraction was its simplicity: start with a percentage, increase the dollar amount with inflation and avoid reacting to markets.
Current research produces a similar but slightly more conservative result. Morningstar’s 2026 retirement-income work estimates a 3.9% starting withdrawal rate for a retiree seeking inflation-adjusted spending over 30 years with a 90% probability of having money remaining at the end. That estimate assumes no Social Security or other nonportfolio income is included in the withdrawal calculation.
That translates to about $39,000 of first-year portfolio withdrawals from $1 million. The number is useful as a planning baseline, but it does not mean a retiree spending $40,000 is reckless or that someone withdrawing $35,000 is automatically safe. Time horizon, asset allocation, taxes, spending flexibility and guaranteed income all matter.
Flexible Spending Changes the Math
The traditional 4% approach assumes the retiree continues increasing withdrawals with inflation even after a difficult market year. Flexible systems work differently. They allow spending to rise after strong investment performance and require some restraint when the portfolio falls.
Morningstar’s latest research found that every flexible spending method it tested supported a higher starting withdrawal rate than the fixed real-spending approach. Some strategies supported starting rates approaching 6%, although the trade-off was greater year-to-year variation in spending.
That does not mean everyone should immediately withdraw 6%. A retiree whose budget consists mostly of mortgage payments, health insurance, food and other fixed costs may have little ability to cut spending during a downturn. Someone whose Social Security and pension cover basic expenses and whose portfolio mostly funds travel and entertainment has considerably more flexibility.
Guardrails Can Keep Spending From Drifting Too Far
One popular dynamic approach is often described as a guardrail strategy. Instead of increasing withdrawals mechanically every year, the retiree monitors how large the withdrawal has become relative to the remaining portfolio. Spending can be increased when the portfolio is comfortably ahead of plan and reduced when withdrawals begin consuming too large a percentage of the account.
Some versions use roughly 20% adjustments when upper or lower guardrails are crossed. The exact mechanics differ, however, and there is no universal rule that every retiree should increase or decrease spending by exactly 20%. What matters is having predefined rules before markets become emotional.
That discipline solves one of retirement planning’s hardest behavioral problems. Retirees do not have to guess whether a downturn is temporary or whether stocks are about to recover. The spending system tells them when an adjustment is needed, reducing the temptation to make dramatic decisions based on fear.
Sequence Risk Matters More Than Average Returns
A portfolio can earn an excellent average return over 30 years and still fail if the worst returns occur immediately after retirement. That is known as sequence-of-returns risk. Withdrawals during an early bear market force the retiree to sell more shares at depressed prices, leaving fewer assets available to participate in the eventual recovery.
Morningstar’s research found that retirees experiencing poor investment returns during the first five years were substantially more vulnerable to portfolio depletion if they did not adjust their spending. Early inflation shocks created a similar problem because spending rose quickly while the portfolio was under pressure.
This is why two retirees with identical portfolios and identical long-term market returns can have very different outcomes. The order of those returns matters when money is continuously leaving the portfolio. Flexibility during the first several years can therefore be especially valuable.
Early Retirees Need More Margin
The traditional 4% framework was designed around roughly a 30-year retirement. Someone leaving work at 50 may need the portfolio to last 40 or 50 years, which introduces considerably more uncertainty. More years mean more opportunities for recessions, inflation shocks and unexpected spending.
Morningstar’s current estimates illustrate the effect. Its fixed real-spending model suggests approximately 3.5% for a 35-year horizon, 3.3% for 40 years and about 2.9% for 50 years, assuming a 90% probability of success and the underlying asset allocation used in the research.
That does not mean every 50-year-old retiree must live on 2.9%. Someone willing to work part time, reduce spending during weak markets, downsize later or use other income sources can tolerate more initial spending. The important point is that retiring earlier increases the value of flexibility.
A Backup Plan Is Part of the Withdrawal Strategy
Retirement planning often treats success as an all-or-nothing outcome: either the portfolio lasts or it runs out. Real households have more options. A retiree can reduce discretionary spending, sell a second property, work temporarily, delay a major purchase or move to a lower-cost home.
Those options have real financial value. Someone with a $100,000 annual lifestyle but the ability to cut spending to $75,000 during a severe bear market is in a very different position from someone who absolutely must spend $100,000 every year. Flexibility effectively functions as another asset on the retirement balance sheet.
That is why planning should identify backup measures before they become necessary. A written list of which expenses can be reduced during a downturn makes the eventual decision less emotional. The retiree already knows what to do if the portfolio crosses a predetermined threshold.
Social Security Can Make Flexible Withdrawals More Powerful
Social Security provides an inflation-adjusted income floor that can reduce dependence on the investment portfolio later in retirement. For workers born in 1960 or later, full retirement age is 67, and delaying to 70 raises the retirement benefit to roughly 124% of the full retirement benefit. There is no additional delayed-retirement credit after age 70.
Delaying Social Security can therefore pair well with a dynamic withdrawal strategy. A retiree may intentionally draw more from investments during the first several years in exchange for a larger guaranteed monthly benefit beginning at 70. Morningstar found that flexible systems become more effective when retirees eventually have a substantial predictable income floor.
That strategy is not automatically best for everyone. Health, longevity expectations, survivor benefits, tax considerations and the opportunity cost of spending investments earlier all matter. The important correction is that waiting beyond age 70 does not produce a larger retirement benefit.
Roth Conversions Belong in the Withdrawal Plan
The years between retirement and the beginning of Social Security or required minimum distributions can create unusually attractive tax-planning opportunities. Earned income may fall substantially while large traditional IRA and 401(k) balances remain untouched. That can create room to convert some pretax assets to Roth accounts at lower marginal tax rates.
A Roth conversion creates taxable income in the year of conversion. The benefit is that future qualified Roth withdrawals are generally tax-free and Roth IRAs do not require lifetime RMDs for the original owner. Converting strategically can reduce the size of future pretax balances and potentially lower later RMDs.
There is no universal rule to “fill the 24% bracket.” One retiree may deliberately convert through the 22% bracket, another may accept 24%, while another may stop much earlier because a larger conversion would increase health-insurance costs or trigger other taxes. The optimal amount depends on current and projected future tax rates.
ACA Subsidies Can Make Early Roth Conversions Expensive
Early retirees before age 65 often purchase health insurance through an Affordable Care Act marketplace. Premium-tax-credit eligibility is tied to household income, and Roth conversions increase modified adjusted gross income. A large conversion can therefore increase taxes while simultaneously reducing health-insurance subsidies.
That does not make pre-65 Roth conversions a mistake. It simply means the cost of the conversion needs to include both income tax and the potential loss of ACA assistance. Sometimes a smaller annual conversion creates a better outcome than moving a very large amount in one year.
This is why a blanket recommendation to wait until 65 is also too simplistic. A market decline before Medicare may create an attractive opportunity to convert depressed assets, and a household with little or no ACA subsidy may have no reason to postpone. The calculation should be made year by year.
Medicare Creates a Different Income Constraint
At age 65, the ACA issue generally disappears for someone transitioning to Medicare, but another income threshold becomes important. Higher modified adjusted gross income can trigger Medicare’s Income-Related Monthly Adjustment Amount, increasing Part B and Part D premiums. IRMAA generally uses tax information from two years earlier.
That means Roth conversions after 65 can still create indirect costs. A large conversion at 65 might increase Medicare premiums at 67, depending on the income level and rules in effect at the time. Retirees should therefore evaluate the conversion’s tax savings alongside possible IRMAA consequences.
The existence of IRMAA does not mean conversions should stop. Paying a temporary Medicare surcharge can sometimes be worthwhile if the conversion prevents much larger future RMDs and taxes. The decision requires comparing lifetime consequences rather than minimizing one year’s premium.
RMDs Can Turn a Large IRA Into a Future Tax Problem
Traditional retirement accounts eventually force owners to withdraw money whether they need the cash or not. Under current law, RMDs generally begin at age 73 for people who reach 73 before 2033, while the applicable age rises to 75 for younger cohorts under SECURE 2.0.
For someone with a multimillion-dollar pretax account, those withdrawals can become substantial. They add to taxable income, can increase the taxable portion of Social Security and may push Medicare premiums higher. A retiree who spends relatively little may therefore face a larger tax bill simply because years of tax-deferred growth created a very large required distribution.
Roth conversions can reduce that future exposure. The objective is not necessarily eliminating every future RMD, which can require paying too much tax upfront. The goal is smoothing taxable income across retirement rather than allowing it to become heavily concentrated in later years.
Social Security Taxation Is Another Reason to Coordinate Withdrawals
Social Security taxation depends on provisional income, a calculation that includes adjusted gross income, tax-exempt interest and one-half of Social Security benefits. For single filers, the long-standing thresholds begin at $25,000 and $34,000, while married couples filing jointly use $32,000 and $44,000. Above those levels, up to 85% of Social Security benefits can become taxable.
That does not mean retirees face an 85% tax rate on Social Security. It means as much as 85% of the benefit can be included in taxable income. The actual tax owed depends on the household’s marginal tax bracket and other income.
Withdrawal sequencing can influence that calculation. Large traditional IRA distributions can increase provisional income, while qualified Roth withdrawals generally do not. Building tax diversification before Social Security begins can therefore create more flexibility later.
Brokerage Accounts Can Help Fund the Tax-Planning Years
Taxable brokerage accounts can be especially useful during the years between retirement and Social Security. Retirees can sell investments to cover living expenses while also executing Roth conversions from pretax accounts. Only the gain portion of a taxable sale is generally subject to capital-gains tax rather than the entire amount withdrawn.
This can allow a retiree to create spending cash without generating as much ordinary income as a large traditional IRA withdrawal. Long-term capital gains may also qualify for a 0% federal rate when taxable income remains below the applicable threshold. The actual result depends on basis, other income and state taxes.
The strategy works best when account types were diversified before retirement. A household with pretax, Roth and taxable assets has far more control over taxable income than one whose entire portfolio sits in a traditional 401(k). Tax diversification can be just as valuable as investment diversification.
Market Declines Can Create Roth-Conversion Opportunities
A bear market is unpleasant for retirees, but it can occasionally produce tax opportunities. If an investment inside a traditional IRA falls substantially, converting that asset to Roth means paying tax on the lower current value. If the investment later recovers inside the Roth account, the subsequent qualified growth can remain tax-free.
The strategy still requires cash to pay the conversion tax and confidence that the conversion makes sense within the broader tax plan. A falling investment is not automatically a good investment simply because it creates a tax opportunity. Asset allocation and long-term expectations should remain the primary considerations.
This is another reason retirement planning should not treat market declines entirely as emergencies. Retirees with liquidity and a plan may be able to use downturns for rebalancing, tax-loss harvesting in taxable accounts and selective Roth conversions. Flexibility creates opportunities that a rigid plan may miss.
Spending More Early in Retirement Can Be Rational
Retirement spending is frequently modeled as though people want exactly the same inflation-adjusted lifestyle from age 60 through age 95. Real life rarely looks that way. Travel, hobbies and physical activities may be much more important during the early active years than in the final decade of life.
That can support a deliberate “go-go, slow-go” spending approach. A retiree may allocate more money toward experiences during the first decade while still maintaining adequate reserves for later health care and support. Higher early spending is not irresponsible when it has been incorporated into a sustainable lifetime plan.
Dynamic withdrawal strategies can accommodate that reality better than rigid inflation-adjusted rules. The retiree can consciously decide which years deserve more spending rather than accidentally leaving a very large portfolio simply because a conservative formula prevented them from using it.
A Large Ending Balance Is Not Always Proof the Plan Was Better
Retirement simulations frequently celebrate strategies that leave the largest median ending portfolio. That makes sense for someone whose primary objective is leaving a large inheritance. It may be less relevant for someone with no children who intends to leave only a modest amount to charity or family.
A strategy that ends with $5 million is not automatically better than one that ends with $2 million if the second strategy allowed the retiree to enjoy substantially more during life. Retirement planning has to define success before selecting the withdrawal method. Portfolio preservation is only one possible objective.
This is where flexible spending can become powerful. It can shift some of the excess safety margin from the end of retirement into years when the retiree can actually use it. The challenge is maintaining enough discipline that flexibility does not become an excuse for uncontrolled spending.
Charitable Goals Can Change the Withdrawal Strategy
Retirees who expect to leave significant assets to charity have additional planning opportunities. Highly appreciated securities can sometimes be donated directly, potentially avoiding capital-gains tax while producing a charitable deduction subject to applicable rules. Donor-advised funds can also allow multiple years of planned giving to be grouped into a high-income year.
Later in retirement, qualified charitable distributions can be useful for IRA owners who are at least 70½. A QCD sends money directly from an IRA to an eligible charity and can count toward an RMD while keeping the distribution out of adjusted gross income, subject to annual limits and other requirements. That can be especially valuable for retirees who do not need their entire required distribution for living expenses.
These strategies further demonstrate why the retirement withdrawal question cannot be reduced to a single percentage. Taxes, charitable intentions, account types and legacy goals all influence which dollars should be spent first.
Advisor Incentives Are Worth Understanding
Some financial advisors charge a percentage of assets under management. Under that model, the advisor’s compensation generally declines when a client withdraws large amounts from the portfolio. That creates a potential conflict that clients should understand, even though it does not mean an advisor recommending conservative spending is acting improperly.
A cautious withdrawal rate can be completely appropriate when a household has little spending flexibility or a strong legacy objective. The important issue is transparency. Clients should understand how their advisor is compensated and whether recommendations reflect the client’s goals, the advisor’s incentives or both.
The same principle applies to overly aggressive advice. Someone selling financial products may have incentives to recommend strategies that generate commissions or encourage asset movement. Retirement decisions are important enough to justify understanding how everyone involved gets paid.
The Best Withdrawal Rate Is the One You Can Adjust
A retirement plan built around exactly 4% can work well, but the percentage itself is not the most important feature. The stronger plan includes rules for what happens when the market falls, inflation rises, taxes change or spending priorities shift. The ability to adapt can matter more than whether the initial withdrawal was 3.8%, 4% or 4.5%.
A retiree with guaranteed income covering essential costs has even more flexibility. Social Security and pensions can pay the bills while investment withdrawals fund travel and other discretionary goals. That allows portfolio spending to decline temporarily without damaging the retiree’s basic standard of living.
The opposite is true when nearly every dollar is essential. A household requiring the portfolio to cover housing, food and medical expenses has less room for dynamic reductions and may need a more conservative starting withdrawal. The withdrawal strategy has to fit the household rather than the other way around.
Retirement Planning Is a Process, Not a Percentage
The 4% rule remains valuable because it provides a simple starting point. What it cannot do is account for every retiree’s tax situation, longevity, guaranteed income, health, spending flexibility or desire to leave money behind. No single withdrawal percentage can solve all of those problems.
The better approach is to review the plan regularly. Recalculate spending, portfolio value, future Social Security, expected RMDs and tax opportunities each year. If markets have been strong, spending may be able to rise; if markets have been weak, modest temporary reductions can protect future flexibility.
Retirement does not require predicting the market correctly for 30 years. It requires building a plan capable of surviving the fact that predictions will often be wrong. For many retirees, flexibility, not a perfect withdrawal rate, is the real source of security.
Intended for educational purposes only. Opinions expressed are not intended as investment advice or to predict future performance. Past performance does not guarantee future results. Neither the information presented, nor any opinion expressed constitutes a solicitation for the purchase or sale of any security. Consult your financial professional before making any investment decisions. Opinions expressed are subject to change without notice.
IMPORTANT DISCLOSURES:
• Investment Advisory and Financial Planning Services are offered through Pure Financial Advisors, LLC. A Registered Investment Advisor.
• Pure Financial Advisors, LLC. does not offer tax or legal advice. Consult with a tax advisor or attorney regarding specific situations.
• Opinions expressed are subject to change without notice and are not intended as investment advice or to predict future performance.
• Investing involves risk including the potential loss of principal. No investment strategy can guarantee a profit or protect against loss in periods of declining values.
• All information is believed to be from reliable sources; however, we make no representation as to its completeness or accuracy.
• Intended for educational purposes only and are not intended as individualized advice or a guarantee that you will achieve a desired result. Before implementing any strategies discussed you should consult your tax and financial advisors.
