A Simple Retirement Calculator is No Good Unless it is Also an Accurate Retirement Calculator

Have you ever entered an internet search for theThe "Retirement Risk Evaluator," a simple retirement
term "simple retirement calculator?" If you have, yourcalculator available at my web site, does the job. It
retirement plan may be in a lot of trouble.does not report a single withdrawal rate as the
I have looked at a good number of the retirementwithdrawal rate that is safe at all valuation levels. It is
calculators available today on the internet. Most getrooted in an understanding that the historical
the numbers wrong. Not a little bit wrong. Most getstock-return data shows that the valuation level that
the numbers wildly wrong. It's hard to believe. But it'sapplies on the day a retirement begins is the single
so.biggest factor affecting the long-term safety of that
The problem is easy to understand. There was a dayretirement.
when most investing experts believed in somethingThe old calculators tell you that you can safely
called "the efficient market." An efficient market iswithdrawal 4 percent from a high-stock portfolio
one that sets prices properly. Most of today's simpleregardless of the valuation level that applies when
retirement calculators assume an efficient market.your retirement begins. Not the Retirement Risk
Unfortunately,. the theory on which these retirementEvaluator. The new planning tool says that there are
planning tools are based has been discredited. Yalesome valuation levels (extremely high ones) at which
Professor Robert Shiller published research in 1981you can safely withdraw only 2 percent from your
showing that valuations affect long-term returnshigh-stock portfolio each year. And there are other
(that is, that the market is NOT efficient). Shiller'svaluation levels (extremely low ones) at which you
research has been confirmed in numerous studiescan safely withdrawal as much as 9 percent from
done in the time since. Even the big names haveyour high-stock portfolio each year.
been expressing doubts about the Efficient MarketIf the idea that valuations affect long-term returns
Theory in scores of articles published since the onsetmakes sense to you, don't get burned by making use
of the stock crash in September 2008.of one of the Old School retirement calculators. A
If the market is not efficient, then the simplesimple retirement calculator is no good unless it is an
retirement calculator that you used to plan youraccurate retirement calculator. Give the New School
retirement steered you wrong. You had better lookretirement planning tool, The Retirement Risk
for a new simple retirement calculator and redo theEvaluator, a spin.
plan.