Nobody enjoys filing taxes, but a considerable number of Americans are most certainly putting them off this year. According to a recent IRS analysis, more than 5.5 million fewer Americans have filed tax returns this year than they did at the same point last year. In fact, the number of returns received this year has gone from 66.7 million down to 61 million, representing an 8.5% drop. And while some of the decline might boil down to good old procrastination, there may be another reason at play.