My 70-Year-Old Friend Refuses to Retire: Are They Right to Fear the 4% Rule?

Retiring is a big life change with serious financial implications. Many people are reluctant to take the plunge because they are concerned that their money will not last. This is the case for a Reddit user’s friend.

The original poster (OP) said that his friend is around 70. The OP is trying to convince the friend to retire, but the friend is deeply worried that following the 4% rule will leave him short of money later in life. Can the friend trust the 4% rule, or should he follow a different path?

What is the 4% rule?

The 4% rule is a guideline designed to help retirement savings last the full length of retirement. In practice, a retiree withdraws 4% of the portfolio balance in the first year, then adjusts that dollar amount upward each year to keep pace with inflation. The idea is that sticking to this safe withdrawal rate gives retirees roughly a 90% chance of their money lasting at least 30 years. The rule traces back to financial planner William Bengen, who in 1994 published his findings in the Journal of Financial Planning after analyzing U.S. market data going back to 1926. His original analysis produced a rate of 4.15%, which was rounded down to 4% when published, and that round number stuck. Bengen later revised his recommendation upward to 4.7%, describing the original figure as a worst-case-scenario floor rather than a target.

The OP’s friend carries two distinct concerns. First, he questions whether he can realistically hold withdrawals to 4%, or whether actual living costs will force him to take out more. Second, he worries that even a disciplined 4% rate may not provide enough protection, given that both of his parents lived into their 90s. With that kind of family history, he may need his savings to stretch 25 years or longer from today.

How can you make sure your money lasts in retirement?

The friend’s caution is well-founded. Morningstar’s 2025 State of Retirement Income report, published December 3, 2025, set the base-case safe withdrawal rate at 3.9% for a balanced portfolio targeting a 90% probability of success over a 30-year horizon. That figure rose modestly from the 3.7% rate in the prior year’s research, thanks to improved capital-market assumptions, but it still sits below the traditional 4% threshold. Morningstar’s analysis assumes a 30-year spending window and excludes Social Security and other non-portfolio income sources.

There is a meaningful silver lining for someone already at age 70. The 3.9% base case is built around a 30-year horizon (roughly age 65 to 95), so a retiree who starts later faces a shorter planning window. Morningstar’s research notes that older retirees can reasonably spend above the 3.9% base rate precisely because their time horizon is compressed. The calculus shifts further in the friend’s favor if he incorporates flexible strategies: Morningstar found that combining a “guardrails” withdrawal approach with delayed Social Security benefits can push the starting safe withdrawal rate as high as 5.7% in some scenarios. A third option, building a 30-year Treasury Inflation-Protected Securities ladder, could support an inflation-adjusted withdrawal rate of 4.5%, though that approach exhausts principal entirely by year 30.

Social Security is also worth quantifying directly. According to Social Security Administration data as of June 2025, 70-year-old retired workers receive an average benefit of about $2,188 per month, or roughly $26,000 per year in inflation-protected income before a single dollar of portfolio is touched. Each dollar of guaranteed income reduces the portfolio draw required to cover living expenses, which makes any given withdrawal rate far more sustainable.

The concern about needing to withdraw more than 4% just to cover day-to-day expenses is a genuine warning sign. If a retiree cannot comfortably live within a safe withdrawal rate, the honest conclusion is that the portfolio may not yet be large enough. Waiting and continuing to save, even for another year or two, can meaningfully reduce the annual drawdown required and give the nest egg more time to grow.

The bigger picture on longevity also deserves attention. The CDC reported that U.S. life expectancy at birth reached 79 years in 2024, its highest level on record. That population-wide figure understates the reality for someone who has already reached 70 in good health. In fact, CDC data show that life expectancy at age 65 was 19.7 years in 2024, meaning a healthy 65-year-old can statistically expect to reach 85 on average. Financial planning experts recommend using the upper end of actuarial ranges rather than the average, and for a 70-year-old, planning to age 90 or beyond is prudent. With parents who lived into their 90s, the friend is right to stress-test his plan against a longer timeline.

The most practical step the OP’s friend could take is a conversation with a fee-only financial advisor. A professional can assess whether retirement is truly feasible, model scenarios based on actual spending needs and longevity expectations, and design a withdrawal strategy that goes beyond blanket rules of thumb. At age 70, getting personalized guidance sooner rather than later can make the difference between a secure retirement and a stressful one.

Editor’s note: The Social Security average monthly benefit figure for 70-year-old retired workers was corrected to $2,188, based on Social Security Administration data as of June 2025, down from the $2,275 figure previously cited. CDC life expectancy data at age 65 (19.7 years in 2024) was added to sharpen the longevity context.

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