An Alternative to the 4% Rule

by | Dec 17, 2024

Getting your Trinity Audio player ready...

For decades, retirees have relied on the 4% rule as a simple and straightforward guideline for withdrawing money from their retirement portfolios. 

The 4% rule has become common practice for many retirees. Especially as defined benefit plans (ie. monthly pension benefits) have been phasing out in favor of defined contribution plans (ie. 401k plans). 

This plan has not been without criticism, however. 

As markets have evolved and lifespans lengthened, the need for more dynamic approaches has become clear. 

A Brief History of the 4% Rule

The 4% rule emerged in 1994 from financial planner Bill Bengen. 

His work found that retirees could withdraw 4% of their portfolio’s initial value in the first year, adjust for inflation annually, and avoid running out of money over a 30-year retirement. 

The simplicity of this rule made it popular, but it assumed a relatively stable market environment, which may not align with today’s realities.

Addressing the Unknowns

Two unknowns in retirement planning are:

  1. How long will you (and if married, your spouse) live?
  2. What will happen to your portfolio?

Being that we cannot predict either, the question should be raised – will the 4% rule accomplish my goals despite these 2 unknowns?

What we further need to do is find the balance between “you can’t take it with you” and “leaving it all behind.” 

In other words, is it possible to enjoy the good times in a responsible way, while tightening the belt a bit during the down years?Enter the guardrails approach, a flexible strategy designed to adjust withdrawals based on real-world performance.

Why the Guardrails Approach is Superior

The 4% rule is appealing in its simplicity, but it comes with several shortcomings:

  • Rigid Withdrawal Rates: Withdrawals remain fixed regardless of market performance, leading to potential over- or underspending.
  • Market Volatility: Significant downturns early in retirement can decimate a portfolio when withdrawals are rigid, creating a risk of running out of money.
  • Inflation Assumptions: The rule assumes a predictable inflation rate, which isn’t always realistic. The recent inflationary period we’ve just experienced is proof positive of this.

The guardrails approach addresses these issues by introducing flexibility. Instead of sticking to a fixed withdrawal amount, retirees adjust their spending within predefined “guardrails” that account for portfolio performance.

How the Guardrails Approach Works

At its core, the guardrails approach establishes upper and lower thresholds for a retiree’s withdrawal rate:

  • Upper Guardrail: If a portfolio grows significantly, withdrawals can increase, allowing retirees to spend more and enjoy their savings.
  • Lower Guardrail: If the portfolio shrinks due to poor market performance, withdrawals are reduced to preserve the portfolio’s longevity.

Here is a sample of what the income could look like with changes to the portfolio:

Practical Example

As we know, retirement balances change daily. However, we cannot practically change retirement income daily. What we should consider doing is using a dynamic approach with sustained market growth. 

For example, if Donald Donaldson is retiring with $1.2M in his 401(k) on the eve of the 2007-2009 Great Recession, we can walk through a practical example.

In the event market conditions would cause his account to hit the “lower guardrail,” we can reduce his normal monthly withdrawal. That is reflected in a temporary reduction in income:

This change gives the account time to recover, while not drastically affecting Donald’s lifestyle. While not a fun conversation to take a pay cut, assuming the market recovers, it is only a temporary one. 

When market conditions improve, Donald can increase his monthly income.

Key Advantages of the Guardrails Approach

There are major benefits that the guardrails approach offers. Those include the following:

  1. Flexibility: Spending adjusts with market performance, providing a more realistic framework for managing income.
  2. Longevity Protection: By reducing withdrawals during downturns, the strategy mitigates the risk of depleting savings.
  3. Lifestyle Enjoyment: When markets perform well, retirees can spend more and enjoy a higher quality of life.

Potential Downsides to Consider

While the guardrails approach is a significant improvement over the 4% rule, it isn’t without challenges:

  1. Complexity: Setting and monitoring guardrails requires more effort than the straightforward 4% rule. Retirees may need professional guidance to implement and maintain the strategy.
  2. Spending Adjustments: Reducing spending during market downturns can be emotionally and practically challenging, especially if fixed expenses dominate a retiree’s budget.

Balancing the Pros and Cons

For many retirees, the guardrails approach strikes the right balance between rigidity and chaos. However, it’s not a one-size-fits-all solution. Before adopting this strategy, consider:

Implementing the Guardrails Approach

If you’re interested in adopting the guardrails approach, here are some practical steps to get started:

  1. Establish Your Withdrawal Rate: Determine an initial withdrawal rate that aligns with your financial needs and risk tolerance. It may be the case that you’re still working part-time or have a spouse collecting income. 
  2. Define Your Guardrails: Set upper and lower thresholds based on your portfolio size and comfort level with spending adjustments. More conservative spenders may have different guardrails than ones who would prefer to spend more in their “go-go” years.
  3. Review Semi-Annually: Conduct a semi-annual review to assess portfolio performance and adjust withdrawals as needed with a team of Certified Financial Planners (CFP®).

Conclusion

The guardrails approach is a powerful tool for managing retirement income in an unpredictable world. 

By introducing flexibility, it addresses the weaknesses of the 4% rule while offering retirees a way to adapt their spending to market realities. 

While it may require more effort to implement and monitor, the benefits of preserving your portfolio and optimizing your lifestyle far outweigh the challenges.

If you’re ready to take a more dynamic approach to your retirement income, the guardrails strategy might be the solution you’ve been looking for. 

As always, consulting with a financial professional can help tailor the strategy to your unique needs. Our team at Hyperion Financial can help with this.