The 4% Rule for Retirement and How Self-Directed IRAs May Change the Equation

One of the most widely cited concepts in retirement planning is the 4% rule. For decades, financial advisors have used it as a straightforward framework to help determine how much retirees can safely withdraw from their retirement accounts without running out of money.

That said, retirement planning in 2026 looks very different from when the rule was first introduced. Investors are living longer. Inflation remains a real concern. And more individuals are turning to alternative investments through Self-Directed IRAs to gain greater control and diversification.

Understanding how the 4% rule works, and how it interacts with alternative assets and Self-Directed IRAs, can help you build a more resilient and flexible retirement income strategy.

What Is the 4% Rule?

The 4% rule was developed in the 1990s by financial planner William Bengen. After analyzing decades of historical market data, Bengen concluded that retirees could withdraw 4% of their retirement savings in the first year of retirement and then adjust that amount annually for inflation. His research suggested there was a high probability the portfolio would last approximately 30 years.

For example, if someone retires with $1 million in retirement savings, the rule suggests withdrawing:

• $40,000 in the first year of retirement
• Then adjusting that amount each year for inflation

The rule was originally tested using portfolios composed primarily of stocks and bonds. Historically, those assets generated enough long-term growth to sustain withdrawals over a typical retirement period.

Another way to look at it is this: retirees should accumulate roughly 25x their desired annual retirement spending before retiring. If someone wants $80,000 of annual income from investments, the rule suggests they would need roughly $2 million saved.

The concept is simple. But it’s not a one-size-fits-all formula. It’s a planning guideline.

Why the 4% Rule Is Being Revisited

The financial world has changed dramatically since the 1990s. Longer life expectancies, higher healthcare costs, and increased market volatility have caused many analysts to revisit what a “safe” withdrawal rate really looks like.

Recent research suggests the safe withdrawal rate for some retirees may be closer to 3.7% to 3.9%, depending on market conditions and portfolio structure.

There are several reasons for this reassessment.

First, many retirees today may spend 30 to 40 years in retirement, especially if they retire in their early 60s. The longer your portfolio needs to last, the more conservative your withdrawal rate generally needs to be.

Second, retirees face sequence-of-returns risk. If markets decline significantly in the early years of retirement while withdrawals continue, the portfolio can struggle to recover.

Finally, inflation erodes purchasing power over time. A retirement that lasts several decades must account for rising housing, healthcare, and living costs.

All of this has led financial planners to move toward a more flexible, adaptive approach to retirement income planning.

Where Self-Directed IRAs Fit Into the 4% Rule

The original 4% rule assumed a traditional portfolio composed primarily of publicly traded stocks and bonds. Today, that is not the only option.

Many investors are using Self-Directed IRAs to invest in alternative assets such as real estate, private credit, private businesses, and precious metals.

A Self-Directed IRA does not change the tax rules of an IRA. Contributions, distributions, and withdrawal rules remain the same. What changes is the type of investments the account can hold.

That expanded investment universe can influence how retirees think about the 4% rule.

Instead of relying exclusively on selling stocks to fund retirement withdrawals, some investors generate income directly from alternative investments held inside a Self-Directed IRA.

Examples include:

• Rental income from real estate investments
• Interest payments from private lending
• Cash flow from private business investments
• Royalties or other income-producing assets

In these situations, the portfolio itself may produce ongoing income streams. That can reduce the need to sell assets each year to meet retirement spending needs.

Example: The 4% Rule With Alternative Assets

Consider two retirees, each with $1 million in retirement savings.

Traditional Portfolio

The first investor follows a traditional stock-and-bond approach.

Using the 4% rule:

• First-year withdrawal = $40,000
• Portfolio income comes primarily from selling assets or receiving dividends

This strategy can work well if markets perform over time. But it depends heavily on continued portfolio growth.

Self-Directed Portfolio

The second investor uses a Self-Directed IRA with diversified assets:

• $400,000 in real estate generating $18,000 in annual rental income
• $300,000 in private credit generating $21,000 in interest income
• $300,000 in equities

In this case, the investor already receives $39,000 in annual income from alternative investments.

Rather than selling assets each year, the investor may only need to withdraw a small portion of the remaining portfolio.

This highlights an important point. The 4% rule is fundamentally a withdrawal framework. It does not account for the possibility that a retirement portfolio may generate direct income through alternative investments.

A More Flexible Approach to Retirement Withdrawals

Many modern retirement strategies treat the 4% rule as a starting point rather than a strict rule.

Instead of withdrawing the same inflation-adjusted amount every year regardless of market conditions, retirees may adjust withdrawals based on:

• Portfolio performance
• Income generated from investments
• Inflation levels
• Lifestyle needs

For investors with Self-Directed IRAs, retirement income may come from multiple sources at the same time.

A diversified retirement income strategy might include:

• Social Security benefits
• Rental income from real estate
• Interest from private loans
• Dividends from public equities
• Occasional portfolio withdrawals

When you have multiple income streams, the traditional withdrawal formula becomes less central to your overall strategy.

The Real Lesson of the 4% Rule

The most important takeaway is not the exact percentage.

The 4% rule reinforces the importance of sustainable withdrawal planning.

Retirement success ultimately comes down to balancing three key factors:

1. Investment growth
2. Spending discipline
3. Tax efficiency

When you combine diversified assets with a thoughtful withdrawal strategy, you put yourself in a stronger position to sustain retirement savings over the long term.

For many investors, Self-Directed IRAs provide an additional tool to help achieve that balance by expanding diversification beyond traditional markets.

How the 4% Rule Works with a Self-Directed IRA

The 4% rule was built around the assumption that retirees would periodically sell portions of a stock-and-bond portfolio to generate income while the remaining investments continued to grow.

With a Self-Directed IRA, the mechanics can look different.

A Self-Directed IRA follows the same contribution, tax, and withdrawal rules as any other IRA. However, it allows you to allocate retirement capital into a broader range of investments. Because many of these investments generate income, such as rental income or interest payments, retirees may rely on internal cash flow rather than selling assets.

For example, a retiree following the traditional 4% rule might sell shares of mutual funds each year. In contrast, an investor with a Self-Directed IRA may receive rental payments, interest from private loans, or distributions from private businesses that help fund retirement expenses.

In that sense, the 4% rule still serves as a useful benchmark. But the withdrawal strategy can be more dynamic.

If income streams cover a significant portion of annual expenses, the retiree may withdraw less from the underlying portfolio. That can allow more assets to remain invested and potentially continue compounding. Diversification also plays a role. The original 4% research assumed exposure primarily to public markets. By incorporating alternative investments through a Self-Directed IRA, some investors seek to diversify both return sources and income streams.

Alternative assets carry risks and are not suitable for every investor. However, when properly structured, they may complement a long-term withdrawal strategy.

Ultimately, the 4% rule should be viewed as a general planning guide. For Self-Directed IRA investors, it can serve as a foundation that is enhanced by income generated from alternative investments within the account.

Final Thoughts

The 4% rule remains a helpful starting point for thinking about retirement withdrawals. But it was never intended to be rigid.

In today’s retirement environment, you need to think about longevity, market uncertainty, inflation, and tax efficiency. For many investors, Self-Directed IRAs and alternative investments provide additional tools to diversify income sources and improve long-term sustainability.

The objective is not simply to follow a rule. The objective is to build a retirement strategy that can adapt to changing economic conditions and support financial security for decades.