The Effect of Taxes on Market Timing
In a recent post , I described a market timing experiment where a market timer decides each month whether to own the S&P 500 or to hold all cash. The result was that the market timer had to guess right 60% of the time from December 1990 to March 2008 to keep pace with an investor who simply bought and held through the whole time period. That experiment assumed that the investor was using a tax-sheltered account, as the Canadian Capitalist observed in his comment on that post. What happens if you have to pay taxes on the interest, dividends, and capital gains? I ran the experiment again, this time taking into account taxes. To give the market timer as much help as possible, I assumed that the buy-and-hold investor sells everything at the end of the complete time period and pays capital gains taxes. Tax rates vary from one jurisdiction to the next. For this experiment, I assumed a tax rate of 40% on interest income and 20% on dividends and capital gains. I assume that the marke...