What is Your Marginal Tax Rate, and Why is It Important to You?

Unless you make your living by helping people complete their returns, you probably prefer to spend as little time as possible thinking about income taxes. The rules and forms are generally opaque and the process is often stressful. However, there is at least one concept in the U.S. tax system that is both very simple and really important, and yet I find that it is unfamiliar to many. That concept is the Marginal Tax Rate, and the short version goes  like this:     read the rest here