It has nothing to do with income, just how much you spend. Under the fair tax, a person making a million dollars a year would pay no more in taxes than a person making 5000 dollars.
It all depends on how much you spend.
Thanks for info. As I see from posts - how much you spend depends on how much you make. Then if you have to spend all you make on food, medical expenses, clothing, transportation, college costs, housing, state and local taxes, then a quarter of your income must go to pay the fair tax. So if the costs of these items doesn't come down [and I gather, they won't], you are in the hole. This doesn't seem to make the case for 'fairness'.