Quote from gnome:
It's been estimated that there is $400 BILLION in non-paid income tax by those who don't file or otherwise evade income tax. If there were a Federal Consumption Tax, those folks would pay something whenever they bought goods and services.... an example of "broadening the tax base". [/QUOTE
They would even more likely try to evade a consumption tax because of what they would perceive to be sticker shock.
And no one has discussed stocks, real estate, and education. Would those be taxed at 20% or more? If not, why not?
If one were to make an exception for "investments," then what about collectibles (art, baseball cards, etc.)?
What about charities? Some people give out of the goodness of their hearts, but some also give because they want a tax break. If that incentive were removed, charities would feel it for sure.
Human nature would not change simply because of a tax change. Trying to stick it to the man is a timeless venture. With a new tax system, there would simply be new and innovative ways to get out of paying a new and innovative tax.