Contributions

BLANCHETT | FRANK

A Dynamic and Adaptive Approach to Distribution Planning and Monitoring by David M. Blanchett, CFP®, CLU, AIFA®, QPA, CFA, and Larry R. Frank, Sr., CFP®

David M. Blanchett, CFP®, CLU, AIFA®, QPA, CFA, is a full-time MBA candidate at the University of Chicago

Executive Summary

Booth School of Business in Chicago, Illinois. He won the Journal of Financial Planning’s 2007 Financial Frontiers Award with a paper titled “Dynamic Allocation Strategies for Distribution Portfolios: Determining the Optimal Distribution Glide Path.”

Larry R. Frank, Sr., CFP®, a wealth advisor and author, lives in Rocklin, California. He shifts people’s focus from an income-centric to a wealth-centric viewpoint to help them better understand how to live on their investments. He can be reached at LarryFrankSr@BetterFinancial Education.com.

D

istribution planning research is entering its second generation. The first generation of distribution research provided answers to relatively static questions such as “what is an initial safe withdrawal rate” and “what is the best (constant) allocation for a distribution portfolio.” Recognizing that distribution decisions are not made only once at retirement, an expanding body of research is exploring retirement as a more dynamic period, in which changes can be made as situations warrant. This paper will explore the question, “What is a safe withdrawal rate?” not only initially, but also currently. It will do so from an adaptive perspective, where the withdrawal rate is revisited annually based on the performance of the underlying portfolio or unforeseen expenditures. It will also be revisited simultaneously with the effects of the dynamic relationships of (1) constantly 52

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• This paper advances the “secondgeneration approach” to the sustainable withdrawal rate question.The study evaluates the ongoing sustainability of the withdrawal rate that is revisited every year. The withdrawal rate itself (not the dollar value) is increased, decreased, or stays the same based on the probability of failure for the remaining target distribution period. • This adaptive approach recognizes that sustainability decisions do not occur just once at retirement, but should change as situations warrant throughout retirement. To support ongoing sustainability decisions, annual probability of failure of the current withdrawal rate is presented in this paper, summarized in five-year slices through the data. • As a person ages, this allows for slowly changing to higher withdrawal rates associated with those shorter remaining distribution periods. For example, a

decreasing distribution periods as the client ages, which in turn allow for (2) an increasing supportable withdrawal rate with a similar probability of failure rate throughout retirement. The study modeled the revisits annually, but the data are displayed as fiveyear slices through the data for simplification of reporting purposes.

15-year distribution period is more appropriate for an 80-year-old than for a 60-year-old retiree. Essentially, a person “ages through the data” from longer distribution periods to ever shorter distribution periods. • Revisiting the withdrawal annually allows for higher withdrawal rates if the portfolio performs well, for unplanned or unforeseen additional expenses, or for lowering withdrawal rates if the portfolio is underperforming. This is done through comparison of the current withdrawal rate to benchmark data to evaluate the associated probability of failure rates of a given portfolio mix and remaining distribution time. • The revisiting approach introduced in this paper is simpler than some of the complex decision rules that have been previously introduced, and is therefore easier to implement and change as the client ages and portfolio values change.

An adaptive approach to distribution planning, where the withdrawal rate is fluid and not constant, can dramatically improve the probability of success of a distribution strategy. Reviewing the withdrawal rate also allows for the withdrawal amount to be increased as situations warrant, which ensures that a retiree is maximizing his or www.FPAjournal.org

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her lifetime income. As the client ages, his or her remaining time dynamically gets shorter. The adaptive approach in this study demonstrates that the withdrawal rate may be slowly increased as the client ages through management of the client’s exposure to probability of failure with his or her current withdrawal rate and remaining distribution time.

Previous Research The assumption of a constant real withdrawal amount from a portfolio is a consistent theme in past distribution research. The sustainable withdrawal rate is typically defined as a percentage of assets where an initial amount, adjusted for inflation, is assumed to be taken from the portfolio for the entire distribution period. For example, a 5 percent withdrawal rate from a $1 million portfolio would result in a $50,000 withdrawal in year one. The withdrawal in year two, though, would not be based on 5 percent of portfolio assets; instead the withdrawal would be $50,000 plus inflation. The $50,000 withdrawals, adjusted for inflation, are typically assumed to continue until the end of the distribution period, where the strategy would either be judged as “passing” (that is, it was able to withstand the withdrawal for the entire distribution period) or “failing” (in other words, it ran out of money). Recognizing that distribution planning is more dynamic than just an initial withdrawal decision, a number of studies have introduced logic, or decision rules, to help advisors determine how and when to adjust a withdrawal amount over time. Guyton (2004) introduced perhaps the most well known study involving decision rules, which were tested in a follow-up paper by Guyton and Klinger (2006). Guyton employs a variety of rules, such as the Portfolio Management Rule, the Inflation Rule, the Withdrawal Rule, and the Prosperity Rule, to help an advisor determine how to adjust the withdrawal over time to ensure the ongoing sustainability of the portfolio. www.FPAjournal.org

While Guyton’s research provides valuable insight into distribution planning, it takes a very “one size fits all” approach to distribution planning. For example, he uses a fixed 40-year period for his study. Forty years is a relatively conservative estimate for the distribution period, and each retiree (or retired couple) will have a distribution period that is unique based on his or her unique age, health, and family history. In contrast, the analysis conducted for this paper considers nine different time periods (10 to 50 years in 5-year increments) and takes a simpler approach to adjusting withdrawals. Bengen (2001) tested a variety of performance-based withdrawal methodologies where the distribution rate was adjusted during retirement in response to changing portfolio conditions. One test involved potentially increasing the real distribution rate by 25 percent or decreasing it by 10 percent based on whether the client was in a bull or bear market. For this paper, the authors use a more precise methodology than Bengen’s to determine whether an adjustment is necessary. Bengen’s analysis was also limited to 55 test “runs” due to his reliance on historical time series sequence data; in contrast, this paper takes a bootstrap approach and uses 100,000 runs per scenario. Pye (2001) addressed the probability that a withdrawal amount will need to be reduced over various periods and for various withdrawal rates. Stout and Mitchell (2006) took a similar approach to Pye where the withdrawal is potentially increased or decreased annually, based on the likely sustainability of the portfolio. Stout and Mitchell’s dynamic model employs three types of controls— portfolio deviation thresholds, withdrawal adjustment rates, and absolute withdrawal rate limits—in order to prevent overreactions to short-term market movements. Stout and Mitchell note that downward adjustments should be more immediate than upward adjustments, and this paper incorporates that concept. This paper could be seen as an extension of Stout and Mitchell’s work.

Portfolio Ruin, Balancing Sequence Risk and

Contributions

Longevity Risk A key consideration when constructing a distribution portfolio is how much to allocate between equities and fixed income/ cash. The long-term importance of the allocation decision has been well documented by Brinson, Hood, and Beebower (1986), and more recently by Tokat, Wicas, and Kinniry (2006). The potential benefit of non-constant equity allocations for distribution portfolios has been noted by Blanchett (2007). Two key risks must be addressed when making the allocation decision: sequence risk and longevity risk. Sequence risk is the risk, or really the implication, of starting the distribution period in a bear market (or a market with low or negative returns). Sequence risk will affect clients differently since people retire at different times. A recent study by Watson Wyatt (Watson 2008) found that retirees with a substantial portion of their assets in defined-contribution type investments are especially prone to encounter sequence risk because they tend to retire during market booms (that is, when their 401(k)s are doing well). Market busts tend to follow market booms, which is the type of market these retirees are likely to face shortly after they retire (think mean reversion). Sequence risk is directly correlated to the market risk of the portfolio. Therefore, more conservative portfolios with lower equity allocations will have a lower likelihood of encountering sequence risk. But more conservative allocations increase longevity risk, or the risk of the outliving one’s resources. As life expectancies continue to increase, the need to create portfolios that can sustain 40 or more years of inflationadjusted withdrawals is becoming increasingly important. Studies by Cooley, Hubbard, and Walz (1998); Tezel (2004); Cassaday (2006); and Guyton and Klinger (2006) all confirm the importance of equities in order to maintain an inflationadjusted withdrawal over a prolonged period. Equities are important because APRIL 2009

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they have historically increased the return of a portfolio versus cash or fixed income. Return is a key driver of portfolio success; however, higher returns are typically accompanied by higher variability, or standard deviation. Higher equity allocations, therefore, decrease longevity risk but increase sequence risk. Viewed differently, if a client is unlucky and encounters poor initial returns (sequence risk) during the distribution period, it is likely that the withdrawal amount will need to be reduced in order for

equity piece of the allocation is split twothirds to domestic large equity and onethird to international equity, while the cash/fixed income allocation is split evenly between cash and fixed income. For example, the allocation for the 60/40 portfolio would be 40 percent domestic large blend equity, 20 percent international equity, 20 percent cash, and 20 percent intermediateterm bond.¹ The withdrawal is revisited each year for this study. Based on the underlying probability of failure for the portfolio, the withdrawal amount can either be increased by 3 percent, decreased by 3 percent, or stay the same. Note, this As the client ages, his or her change is in addition to a remaining distribution period decreases potential increase due to inflation. All withdrawal and the client dynamically moves amounts are considered to through the ever-shortening distribution be in real terms, eliminating the effect of inflation on the periods. As a result, their current analysis. This was done by benchmark withdrawal rate and subtracting the monthly inflation rate, which was associated probability of failure defined as the increase in adjusts with time. the Consumer Price Index for all Urban Consumers (CPI-U)², from the monthly returns used in the analysis. CPI-U was used as the definition of inflation because it is the most the portfolio to survive. If a client is lucky, though, and encounters high initial returns, common definition. The probability of failure of the withit is likely the withdrawal amount can actudrawal is calculated each year based on the ally be increased. The key is revisiting the portfolio allocation, the number of years withdrawal to determine whether it is still remaining in the target period, the previreasonable given the current value of the ous year’s withdrawal, and the portfolio portfolio. This is the primary concept that value at the end of the previous year. The will be explored in this piece. withdrawal dollar amount is decreased by 3 percent if ‘Revisiting’ Methodology • The probability of failure for the portfolio is greater than 20 percent when Four different equity allocations were conthe target end date is 20+ years away sidered for the analysis because risk toler• The probability of failure is greater ances differ across investors and testing than 10 percent when the target end only one allocation (60/40, for example) date is 11–19 years away would ignore this fact. The four different • The probability of failure is greater allocations considered for the paper were than 5 percent when the target end 20/80 (20 percent equity and 80 percent date is 10 years or fewer away cash/fixed), 40/60, 60/40 and 80/20. The





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The withdrawal amount is increased by 3 percent if the probability of failure is less than 5 percent. If neither of the above conditions is met, the distribution dollar amount does not change (except for inflation or deflation adjustments). The target period is defined as the length of the assumed distribution period (30 years, for example). As the portfolio progresses over time, the remaining target distribution period, or planning period, decreases. For example, if the target period is 30 years, after 4 years the target period would be 26 years. To build a reference table where the withdrawal rate (as percentage of current assets) based on the equity allocation and remaining period could be determined, the probabilities of failure were calculated for each of the four equity allocations (20/80, 40/60, 60/40, and 80/20) for periods between 1 and 50 years (in one-year increments) and for withdrawal rates from 0 percent to 100 percent (in 1 percent increments). (A sampling of the data points used in the reference table can be found in Figure 2 on page 56.) For the revisiting strategy, the probability of failure was calculated for each year of each run of each scenario to replicate the dynamic approach an advisor would take when working with a retired client as markets change. The probability of failure is a very fluid number that can change a great deal over time. As an example, Figure 1 includes the probability of failure for 50 runs of a Monte Carlo simulation with a 6 percent initial real withdrawal rate over a 30-year period for a 60/40 portfolio where the withdrawal is adjusted during the distribution period based on the previously described methodology. The probability of failure at the beginning (year zero) is the same for each of the 50 Monte Carlo runs, 39.01 percent. But as the portfolio progresses through the distribution period, the probability of failure changes for each of the runs. In the aggregate, the probability of failure tends to decrease because the initial failure rate is higher than the respective target probabilwww.FPAjournal.org

BLANCHETT | FRANK

www.FPAjournal.org

4WUc`S (

=\U]W\U >`]POPWZWbWSa ]T 4OWZc`S T]` # AO[^ZS ;]\bS 1O`Z] @c\a @c\a BVOb 4OWZSR

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ity of failure (20 percent). This causes the withdrawal amount to be reduced by 3 percent a year until it falls within an acceptable probability of failure range. Figure 1 demonstrates why it is important to regularly revisit the likelihood of failure for a distribution strategy, as the probability of a portfolio failing (or succeeding) is always changing over time. The actual returns used for testing purposes were created through a process known as bootstrapping. This is a type of simulation analysis where the in-sample test period returns are randomly recombined to create annual test returns. For the analysis, monthly return information was obtained on the four test asset classes from 1927 to 2007 (81 calendar years) and randomly recombined to create hypothetical real annual rates of return for the analysis. For example, the monthly real returns for each of the four categories for the same month (such as June 1961) would be recombined with monthly real returns from 11 other months (such as March 1930, January 1995, May 1979, and so on) to create each hypothetical annual real return. A benefit of the bootstrapping process is that no assumptions need to be made about the distribution of hypothetical returns (for example, leptokurtic and positively skewed). Distributions from the portfolio were assumed be taken once a year at the beginning of each year. Each test scenario was subjected to a 100,000 run bootstrap Monte Carlo simulation. The simulator used for this research was built in Microsoft Excel by one of the authors. The original simulator built for this analysis used 10,000 runs; however, the simulator was expanded to accommodate more runs (from 10,000 to 100,000) due to the variability in the results of the 10,000 run series. Over two billion Monte Carlo simulations were performed for this analysis, the majority of which were used to create the reference table (Figure 2 shows a sample of the data points) to calculate the ongoing sustainability of a given withdrawal rate. The portfolios were assumed to be held

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in tax-deferred accounts and therefore any tax implications of the withdrawals are ignored. Based on the bootstrapping methodology, it is implicitly assumed that the portfolios are rebalanced back to their target allocations monthly. Any potential costs associated with the rebalancing were also ignored. Nine target distribution periods (10, 15, 20, 25, 30, 35, 40, 45, and 50 years) and nine real distribution rates (4, 5, 6, 7, 8, 9, 10, 11, and 12 percent) were tested for the four different equity allocations (20/80, 40/60, 60/40, 80/20), for a total of 324 dynamic scenarios. Selecting the appropriate initial distribution period is typically a function of the planned length of the distribution period. For example, if you use age 95 as the base mortality date for all retirees (this methodology is discussed in a paper by the authors titled “In Search of the Numbers,” currently unpublished), then for a client 65 years old the initial distribution period would be 30 years. As that client ages, his or her remaining distribution period decreases and the client dynamically moves through the evershortening distribution periods. As a result, their current benchmark withdrawal rate and associated probability of failure adjusts with time.

Before reviewing the potential benefits of revisiting a distribution portfolio see Figure 2, which illustrates for baseline comparison purposes the probabilities of failure for a static distribution strategy. After reviewing Figure 2, it is possible to understand why 4 percent has widely been noted as the safe initial withdrawal rate. The probability of failure for a static 4 percent withdrawal rate for a 60/40 portfolio over a 30-year distribution period was only 4.07 percent, and only 2.01 percent for a 20/80 portfolio. Viewed differently, approximately 1 of every 25 clients who take $40,000 a year from a $1 million initial portfolio (adjusted for inflation) is likely to run out of money during the 30-year period. Even for a 50-year distribution period the probability of failure for a 4 percent initial withdrawal rate for a 60/40 portfolio was only 16.91 percent. Higher withdrawal rates, such as 6 percent, are commonly viewed as too aggressive because the probability of failure is much higher (such as 39.01 percent for a 60/40 portfolio with a 30-year distribution period). But not everyone retires precisely at age 65 (age 95 minus 30 years of distributions), and a 6 percent withdrawal is an incredibly conservative withdrawal for a 15-year distribution period.

Results: Static Withdrawals for Comparison

Results: Dynamic Distributions APRIL 2009

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Contributions

BLANCHETT | FRANK

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Figure 2 includes a sampling of the information used to create the reference table to determine the ongoing success rates when testing the dynamic strategies. As an example, if a 60/40 portfolio with 20 years remaining in its target period had a value 56

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of $800,000 and a $40,000 real withdrawal, the withdrawal rate, as a percentage of current assets, would be 5 percent ($40,000/$800,000), which corresponds to a probability of failure of 2.07 percent. Because the probability of failure at this point is less than 5 percent, the withdrawal

amount for the next year would be increased by 3 percent to $41,200 (from $40,000). If, however, the portfolio value was only $500,000, the withdrawal rate would be 8 percent ($40,000/$500,000). Because this corresponds to a probability of failure that is greater than 10 percent www.FPAjournal.org

BLANCHETT | FRANK

www.FPAjournal.org

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(actually 55.25 percent), the withdrawal amount for the following year would need to be reduced by 3 percent, from $40,000 to $38,800. As a reminder, this calculation was performed for each year for each of the 100,000 runs for each of the 100 different scenarios. But when the withdrawal amount is revisited on an ongoing basis, as it likely would be when working with an advisor, the actual real withdrawal amount received by a client will likely change based on the performance of the underlying portfolio due to market forces. Figure 3 illustrates the results of the five different percentile slices from a $1 million portfolio over a sample 30-year distribution period. The initial withdrawal rate is assumed to be 6 percent ($60,000 from $1 million), the target period is 30 years, and the portfolio allocation is 60/40. The withdrawal amounts are based on those runs that survived the entire distribution period. As is evident in Figure 3, the range of potential withdrawals changed over time, primarily based on the performance of the underlying portfolio—or viewed differently, the luck of the retiree. For example, based on the information in Figure 3, and the revisiting methodology discussed previously, those unlucky retirees (in the 95th percentile or the worst 1 in 20), would see their initial $60,000 withdrawal reduced to $39,210 by the 30th year. But those lucky retirees in the fifth percentile (or the best 1 in 20) would see their initial $60,000 withdrawal increased to $121,968 by the 30th year. The median expected withdrawal at the 30th year was $82,133. Revisiting the withdrawal amount also reduced the likelihood of failure versus using a static withdrawal amount. An example of this is included in Figure 4, which is based on the same assumptions for Figure 3. Sequence risk is best controlled by evaluating the current withdrawal rate, since declining markets push the current withdrawal rate up. (Sequence risk is always present for all retirees who take a higher withdrawal associated with higher probability of failure.) Time does

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not cure sequence risk unless near-term rising market values (lucky retiree) reduce the current withdrawal rate such that the probability of failure is now lower. It is important to note that using the revisiting approach is going to result in

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clients who take the same initial withdrawal rate (say 5 percent) ending up with very different withdrawal amounts during the distribution period, depending on their actual markets experienced. To give the reader a better idea of the distribution APRIL 2009

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Journal of Financial Planning

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APRIL 2009

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(best 1 in 5) are included in Appendices 1–5. The corresponding probabilities of failure for each of the scenarios is included in each appendix to help the reader easily reference the probability of that revisiting strategy surviving the target

distribution period. Revisiting, or adjusting, the withdrawal amount throughout the distribution period reduced the probability of failure significantly. A static real withdrawal amount, based on a 6 percent initial distribution (or www.FPAjournal.org

Contributions

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$60,000 from a $1 million portfolio), had a 39.01 percent probability of failure at 30 years, while the probability of failure for the revisited strategy was only 9.83 percent. Figure 5 includes the probabilities of failure for the same scenarios in Figure 2; however, unlike Figure 2, the probabilities of failure for Figure 5 incorporate the revisiting methodology where the withdrawal amount was increased, decreased, or kept the same based on the ongoing probability of success for the portfolio. The revisited strategy also had a consistently lower probability of failure as seen in Figure 6. Some readers may question how it is possible to have both a lower probability of failure and a higher median withdrawal amount when revisiting is used. This occurs for two reasons. First, the withdrawal amount was reduced with poor www.FPAjournal.org

portfolio performance. Based on the data used to develop Figures 3 and 4, 88.47 percent of the runs had withdrawal amounts less than the initial $60,000 at year 5, 69.70 percent at year 10, 55.31 percent at year 15. Reducing the withdrawal amount as situations warranted better enabled the portfolio to survive the entire distribution period if the market returns were low. Second, the dispersion of the ending account values was much tighter for the revisited methodology than the constant approach. The revisiting methodology ensures that the withdrawal amount is tailored to the underlying portfolio; if the portfolio performs well the withdrawal increases, if the portfolio performs poorly the withdrawal decreases. Contrast this dynamic approach with the constant withdrawal approach, where the same with-

drawal is taken regardless of the underlying portfolio value. It is worth noting that the probability of failure actually increased for some of the more conservative scenarios. For example, the probability of failure for a 4 percent distribution for a 20/80 portfolio over 25 years based on the constant methodology was only .05 percent, yet was 3.54 percent based on the revisit methodology. The primary reason for the increase was that a probability of failure of less than 5 percent was deemed acceptable when there were ten or fewer years to the target end date when determining whether to adjust the withdrawal. For this scenario (4 percent withdrawal, 20/80 portfolio, 25 year distribution period), the 95th percentile withdrawal amount (or worst 1 in 20) at the 25th year was $52,834. The failure rate in APRIL 2009

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the 24th year of this strategy was only .01 percent. In other words, the revisited approach resulted in a higher lifetime withdrawal amount, which is arguably each retiree’s objective, and virtually every run that failed did so in the last withdrawal year. Figure 6 compares the table data from Figures 2 and 5 for the portfolio composition 60/40 (other portfolios would yield similar figures) for the withdrawal amounts from 4 percent to 8 percent for the 20- to 50-year periods. This figure illustrates the gap between Revisited (RV) withdrawal rates, which have lower probability of failure rates relative to Fixed (F) withdrawal rates, which is why the RV columns are to the right of the F columns. In reality, people withdraw dollar amounts from their portfolios. Without changing those dollar amounts (except for increasing them for inflation), the withdrawal rate is still constantly changing due to the dynamic factor of fluctuating portfo-

lio values are less, which forces a higher withdrawal rate from the portfolio. A second dynamic factor is the effect of aging where distribution periods are, in fact, dynamically and continually shrinking. An initial withdrawal rate for 35 years remaining, then 34, 33, and so on, is quite different from a sustainable withdrawal rate when the retiree has 10 years remaining. Withdrawal rates tend to be linear when aligned for distribution periods from 20 to 40 years (ages 55 to 75) versus parabolic when aligned for periods under 20 years (ages 76 and older).

‘Safety’ of 4 Percent and Early Versus Later Withdrawal Strategies

Distribution planning is not a “one size fits all” exercise. Each client and retiree will have different needs that are going to influence the sustainable real withdrawal rate decision. Past research on adaptive strategies has noted that 4 percent is likely too conservative an estimate for an initial withdrawal rate, generally sugSequence risk can be managed by gesting a higher withdrawal amount. Being able to take reviewing current withdrawal rates to higher withdrawals earlier ensure they are still prudent given the versus later has raised the strategy of trying to reverse relevant time remaining. As time this timing, or “smoothing” remaining is reduced by client aging withdrawal rates over the entire distribution period. dynamics, the withdrawal rate may Observe in the previous figincrease over time. ures that, given similar probability of failure rates, a higher withdrawal rate correlates with shorter distribution periods, and vice versa. Attempting to take a lio market values. Advisors are able to higher withdrawal rate early in retirement benchmark and compare their client’s curwith the intention of changing to a lower rent withdrawal rate (current dollar withwithdrawal rate later in retirement attempts drawal amount divided by the current disto reverse these findings. Considerations: tribution portfolio market value) to Figures • It has been difficult to assess what rate 3 and 6 to obtain an idea what the client’s to use early on, unless the advisor has current withdrawal probability for success relative probability of failure rates for or failure may be. This is especially imporall the choices. tant during market declines where portfo• Smoothing strategies require the





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client to have the ability to cut expenditures during poor markets. This is difficult to explain unless the advisor has relative probability of failures of the client’s current withdrawal rate (current annual withdrawal divided by the current portfolio value). • Higher initial withdrawal rates result in still higher current withdrawal rates even when the portfolio value declines with poor markets (sequence risk). • Portfolio value volatility accentuates the sale of more shares. The higher the smoothing rate over a sustainable rate, the more the relative number of shares are needed to be sold (negative dollar cost averaging effect) versus the non-smoothed rate. • The negative dollar-cost averaging effect has led to the strategy of placing the first few years of distributions into cash or more conservative portfolios/ buckets. • Because the total value supporting distributions includes these conservative buckets, this strategy is essentially shifting the overall portfolio to one more conservative. • Figures 2 and 5 provide probabilities of failure rates for different portfolio compositions for different withdrawal periods. Sequence risk can be managed by reviewing current withdrawal rates to ensure they are still prudent given the relevant time remaining. As time remaining is reduced by client aging dynamics, the withdrawal rate may increase over time. How to determine a client’s time remaining is based on using a common mortality-base age as discussed in the white paper by the authors titled “In Search of the Numbers.” But each retiree can potentially incur market declines at any time. Controlling the risk of having to reduce a retiree’s withdrawals is a function of setting the current withdrawal rate lower, rather than higher, at any given point. Benchmarking the current withdrawal rate provides the ability to assess the probability of failure over time. A client can reduce the likelihood they would need to reduce their withdrawals, www.FPAjournal.org

BLANCHETT | FRANK

hence cut their expenses, by using a withdrawal rate appropriate for the time remaining as well as a lower current withdrawal rate relative to other rates possible for that time frame remaining. In other words, higher rates are generally possible for smaller distribution periods (such as 20 years) versus longer distribution periods (such as 40 years).

Conclusion Because it is impossible to predict with certainty the exact path each of your clients will take during retirement, an adaptive approach should be used when determining the appropriate withdrawal amount from a distribution portfolio. Past distribution research has been based primarily on the assumption where a constant, inflation-adjusted withdrawal is taken from a portfolio for the length of the distribution period, regardless of the underlying portfolio. The static methodology ignores the dynamic needs of clients, market fluctuations, and client responses to those fluctuations, where the ongoing value provided by advisors who regularly meet with clients to ensure the future success of the distribution strategy rests with an ability to benchmark the client’s probability of success or failure. Revisiting the withdrawal can materially improve the probability of success for a distribution portfolio and, therefore, is an essential component of any distribution plan.

Endnotes 1. Data definitions: a. Intermediate-term bond: defined as the return on the Moody’s Seasoned Aaa Corporate Bond Yield, assuming a ten-year duration. Data obtained from the St. Louis Federal Reserve: http: //research.stlouisfed.org/fred2/. b. Cash: defined as the yield on the three-month Treasury bill. Secondary www.FPAjournal.org

Market Rate data obtained from Tradetools.com (1927-1933) and the St. Louis Federal Reserve (19342006): http://research.stlouisfed. org/fred2/. c. Domestic large blend equity: defined as the return on the “Big Neutral” portfolio based on the 2×3 portfolio return information publicly available on Kenneth French’s Web site: http:// mba.tuck.dartmouth.edu/pages/faculty/ken.french/data_library.html. d. International equities: defined as the return on the Global Financial Data World ex-USA Return Index, data obtained from Global Financial Data from January 1927 to December 1969 and the return on the MSCI EAFE Standard Core Net USD from January 1970 to December 2007. Because pure historical data is used forthis analysis, as is common among distribution research, the authors would caution the reader that if future returns are lower than historical returns, the actual result of a distribution portfolio may be materially different from what this research suggests. 2. Data obtained from the Bureau of Labor Statistics.

References Bengen, William P. 2001. “Conserving Client Portfolios During Retirement, Part IV.” Journal of Financial Planning 14, 5 (May): 110–118. Blanchett, David M. 2007. ”Dynamic Allocation Strategies for Distribution Portfolios: Determining the Optimal Distribution Glide Path.” Journal of Financial Planning 20, 12 (December): 68–81. Brinson, Gary P., L. Randolph Hood, and Gilbert L. Beebower. 1986. “Determinants of Portfolio Performance.” Financial Analysts Journal 42, 4 (July/August): 39–44. Cassaday, Stephan Q. 2006. “DIESEL: A System for Generating Cash Flow During Retirement.” Journal of Financial Planning 19, 9 (September): 60–65.

Contributions

Cooley, Phillip L., Carl M. Hubbard, and Daniel T. Walz. 1998. “Retirement Savings: Choosing a Withdrawal Rate that is Sustainable.” Journal of the American Association of Individual Investors 20 (February): 16–21. Guyton, Jonathan T. 2004. “Decision Rules and Portfolio Management for Retirees: Is the ‘Safe’ Initial Withdrawal Rate Too Safe?” Journal of Financial Planning 17, 10 (October): 54–61. Guyton, Jonathan T. and William J. Klinger. 2006. “Decision Rules and Maximum Initial Withdrawal Rates.” Journal of Financial Planning 19, 3 (March): 49–57. Pye, Gordon B. 2000. “Sustainable Investment Withdrawals.” Journal of Portfolio Management 26, 4 (Summer): 73–83. Stout, R. Gene and John B. Mitchell. 2006. “Dynamic Retirement Withdrawal Planning.” Financial Services Review 15, 2 (Summer): 117–131. Tezel, Ahmet. 2004. “Sustainable Retirement Withdrawals.” Journal of Financial Planning 17, 7 (July): 52–57. Tokat, Yesim, Nelson Wicas, and Francis M. Kinniry. 2006. “The Asset Allocation Debate: A Review and Reconciliation.” Journal of Financial Planning 19, 10 (October): 52–61. Watson Wyatt 2008. “Influences on Workers’ Asset Allocations in Defined Contribution Accounts.” www.watsonwyatt. com/us/pubs/insider/showarticle.asp?Ar ticleID=18489.

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Contributions

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62

Journal of Financial Planning

|

APRIL 2009

www.FPAjournal.org

Contributions

BLANCHETT | FRANK

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www.FPAjournal.org

APRIL 2009

|

Journal of Financial Planning

63

Contributions

BLANCHETT | FRANK

/^^S\RWf !( &bV > >S`QS\bWZS S`QS\bWZS E E]`ab ]`ab  W\ # # @ @SOZ SOZ EWbVR`OeOZ EWbVR`OeOZ /[] /[]c\ba c\ba O Obb B BO`USb O` O USb 2O 2ObS bS 3\R EVS\ E CaW\U CaW\U @SdWaWbW\U @SdWaWbW\U dWaWbW\U 2Wab`WPcbW]\ >S`W]R GSO`a 2Wa b`WPcbW]\ > S`W]R G GS SO`a

7\WbWOZ 7\WbWO OZ >]`bT]ZW] > ]`bT]ZW] EWbVR`OeOZ WbVR``OeOZ O  /ZZ]QObW]\ /ZZ]QO bW]\ E



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64

Journal of Financial Planning

|

APRIL 2009

www.FPAjournal.org

Contributions

BLANCHETT | FRANK

/^^S\RWf "( #bV > >S`QS\bWZS S`QS\bWZS ;SRWO\ @ @SOZ S E SOZ EWbVR`OeOZ WbVR`OeOZ /[]c\ba O Obb B BO`USb O` O USb 2O 2ObS bS 3\R EVS\ EVS\ Ca CaW\U W\U @ @SdWaWbW\U SdWaWbW\U dWaWbW\U 2Wab`WPcbW]\ >S`W]R GSO`a 2Wa b`WPcbW]\ > S`W]R G GS SO`a

7\WbWOZ 7\WbWO OZ >]`bT]ZW] > ]`bT]ZW] EWbVR`OeOZ WbVR``OeOZ O  /ZZ]QObW]\ /ZZ]QO bW]\ E



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Journal of Financial Planning

65

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66

Journal of Financial Planning

|

APRIL 2009

www.FPAjournal.org

A Dynamic and Adaptive Approach to Distribution ...

the performance of the underlying portfolio or unforeseen ... Distribution Planning and Monitoring by David M. .... performance-based withdrawal methodolo-.

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