Many times I am asked, “How much money do I need to retire”? This may be one of the most important questions anyone can ask an investment advisor. The usual answer found around the industry results in a very complicated and fuzzy description, filled with disclaimers, because it is one question most people have not spent any time figuring out.
There are some golden rules of thumb that people have used throughout the years such as: only spend the income generated from the portfolio, or you can safely spend 4% of the total value each year and most likely not run out of money in your lifetime. (I particularly like the “most likely” part.) The first rule has you finishing your life with your savings intact, but would you not have preferred to enjoy some of the savings as well as the income? The second can be risky because you are using a hard and fast rule, 4%, against a value that fluctuates, the market and cost of living.
While the answer to the golden question is not simple, it is not rocket science. There are just a few major, predictable factors that influence the decision and if you take them into consideration, a reasonable estimate can be made to satisfy the question. First, is how much do you wish to spend when you retire? The first idea that comes to mind is as much as possible, but that is not always an option. A realistic number can be obtained from examining several years of expenditures and then looking forward estimating future spending levels. This is usually an eye opening experience, and even though we have been managing our own personal budget for years, putting in on paper makes us reflect back on the time we obtained our first job, feeling rich, and then quickly realizing how much rent, car, gas, and food really cost. And, don’t forget the first item, taxes. At that point we became a realist in determining how much we needed to live.
The second item in the planning process is probably the most misunderstood part of the process. It is not only misunderstood by most of the population, but also by people in the investment industry that are supposed to be “retirement experts”. The question of how long do you plan on living, is sometimes confused with how long will you live. No one knows for sure how long they will live, but there are ways to estimate how much longer you may live once you have reached a certain age.
Most everyone is familiar with numbers produced by the National Vital Statistics Report commonly called average life expectancy. You may have seen some of the statistics such as the average age in 1900 being 49 years. By 1970, the average age had increased to 71 due to better medicine and diet for both infants and older adults; currently, the average age is near 76. You must keep in mind that the average age is impacted by deaths of infants as well as older adults. To demonstrate how such averages might be misleading, let us suppose there were only two people in the world and one died just after birth and the other lived to be 80. The average age would be 40. This number is meaningless to either person and worthless for retirement planning.
A more meaningful number would be how much longer you might expect to live once you have reached a certain age. For example, if you are determining how much you need to retire, it would be useful to take the age in which you plan to retire, let’s say, 65, and then answer the question of how long might I live if I reach this age? Life expectancy calculation is much different than the average age. Statistically, someone that reaches 65 has a life expectancy of 16 more years. This would be 81, which is much different than the average age of 76. Using the average someone might only plan on having enough income for another 11 years when the more likely outcome is another 16 years, or 5 more than planned. The last five years might be very uncomfortable.
Just as not using the average to plan for retirement, it is also not a good idea to restrict your planning to just using the average life expectancy value. What if you live beyond the average life expectancy? It would also be useful to know what is the likely hood of your living beyond the average and for how many years? No statistical office or government agency has published a specific number, or determined the spread around the average, but one can be estimated. Several people have examined the numbers and estimated the standard deviation is around 10 years. You can make your own estimate by examining the IRS life expectancy table known as RP2000.
Rather than recreating the estimate, we can use it as a good estimate. This value creates an interesting picture. Once you reach age 65, you have a 97% chance that you will live to reach an age between 71, (81 – 10 = 71) and 91, (81 + 10 = 91). Again, taking our original question regarding retirement at age 65, you would need an income replacement to last at least 6 years and possibly as long as 26 years.
This places new assumptions on the retirement planning process. Traditionally, planning involved using an average date and ignored the range of possible outcomes. The use of life expectancy provides a more realistic picture that also requires a bit more planning on the investment front.
In the next article, we will explore how the range of life expectancy impacts portfolio returns and some alternative planning strategies. Investments can be managed to reduce the concern of not having enough, but the time to manage these expectations is now.