Learn why you may be able to retire earlier than you think.
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Why You May Be Able To Retire Earlier Than You Think

Much of the research done on how much money can safely be withdrawn from retirement nest eggs focuses on an initial amount that is withdrawn in the first year of retirement and then assumes that this initial amount is increased by an inflationary factor every year thereafter. So what does this look like? Is this realistic? What does this practically mean for you as an investor?

Bengen’s Four Percent Rule

A widely accepted study on this topic that has received great attention was originally popularized by Bill Bengen in 1994. Mr. Bengen suggested that, with a portfolio consisting of half large-company stocks and half intermediate-term U.S. Treasury bonds, the maximum starting rate that one could safely withdraw was about four percent.1

To arrive at this figure, he assumed that every year the amount withdrawn would increase by an inflation factor and that based on historical investment returns of the investment classes mentioned, a portfolio could withstand this type of withdrawal for at least 30 years. Today this is widely known as the Four Percent Rule.

So, for example, if an investor’s total portfolio at retirement is $1,000,000, a four percent starting withdrawal rate will equate to $40,000 of income in year one. If year two is adjusted by a three percent inflation factor, the withdrawal in year two will increase to $41,200. This annual amount would continue to increase with inflation over a theoretical 30-year retirement time horizon.

This is a hypothetical example. An annual inflation rate of 3% is assumed.

Is This Even Necessary?

Bill Bengen’s Four Percent Rule has been challenged by many researchers. Some have argued that four percent is too high, while others have suggested that you can start with more than four percent if you apply certain rules during poor market conditions. However, the assumption of inflation adjustments is usually still present.

Despite the fact that the financial planning profession has generally accepted inflation adjustments when conducting retirement planning, there is a growing body of knowledge that this assumption may artificially overestimate how much an investor needs to maintain their desired lifestyle in retirement.

In my experience with helping numerous clients with retirement planning over many years, it is rare that clients will request inflation adjustments from their investment income. This observation led me to write an article in 2005 for the Journal of Financial Planning on this topic called “Reality Retirement Planning.”2

In this article, I incorporated reduced spending data acquired from the Bureau of Labor Statistics into the retirement income planning process. Critics of this article suggested that the data used was not an accurate reflection of true spending reductions, and it could not be substantiated that the spending reductions were voluntary.

Since this 2005 article was published, additional research has been completed using updated data. One particular study was recently summarized in Investment News.3 The study was completed by the Employee Benefit Research Institute (EBRI), using data from 1992 – 2015; all numbers in the study were measured using 2015 dollars.4 In the study, EBRI found that households with less than $200,000 in non-housing assets experienced about a 25% drop in their assets in their first 18 years of retirement. Retirees who started with more than $500,000 in non-housing assets spent down only 12% on average in the first 20 years of retirement. Furthermore, about one-third of retirees had more assets after 20 years of retirement than at the beginning of retirement. This new research, when coupled with past research, could imply that many retirees tend to spend less by choice rather than out of necessity.

Reduced spending may impact what you need in your nest egg

Reduced real spending needs in retirement can have significant implications as it applies to the size of the nest egg you need to maintain a desired lifestyle throughout retirement. This is especially significant when considering that some forms of retirement income may increase in retirement, including Social Security income and, in some cases, pension income. The increases in some forms of retirement income can help further alleviate pressure on retirement investment distributions.

To understand the demands that annual inflation adjustments have on a portfolio, let’s revisit the hypothetical example above. If we assume an initial withdrawal of 4% on a $1,000,000 portfolio that is adjusted annually by a 3% inflation rate, the total amount of income withdrawn over a 30-year retirement would equal $1,903,017. If we exclude the annual inflation adjustments over the same 30 year period, the amount of income withdrawn would be $1,200,000, which would equal a $703,017 reduction in withdrawals.

Which method?

If you use Bengen’s research and assume you will need to adjust your income upward every year throughout your retirement years, then you may plan on needing to either save more, spend less, retire later, or pick up work during your retirement years.

If, however, you believe that your later years in retirement will be met by reduced real spending needs, similar to many clients we’ve worked with, you may be able to retire earlier than what traditional retirement planning would imply and/or spend more in your early, more active retirement years.

As with any type of financial planning, the actual real spending decrease, if any, can vary greatly between investors, and it is important to consider your unique circumstances before making bold decisions on your official retirement date.

Originally posted in Forbes May 31, 2019. 

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Learn why you may be able to retire earlier than you think.
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