The three-legged stool is a metaphor that retirement planners use to describe the three most common sources of income for retirees. At one point in time, the three legs referred to Social Security, pension and personal savings — the multiple sources of income generally needed to achieve a financially secure retirement.
As the saying goes there are two things that are inevitable: death and taxes. And, out of those two sure things, you can only really plan for your taxes. It should be no surprise when tax season surely and steadily rolls around again, yet every year there are plenty of individuals who file for a tax extension (in 2014 there were approximately 12 million Americans who did so).