From FairTax Frequently Asked Questions:
11. Why is the FairTax better than out current system? Our present tax system is one of the reasons that people are finding it so difficult to get ahead these days. It is one of the reasons the next generation may not have a standard of living as high as this generation. Cars replaced the horse and buggy, the telephone replaced the telegraph, and the FairTax replaces the income tax. The income tax is holding us back and making it more difficult than it needs to be to improve our families’ standard of living. It makes it needlessly difficult for our businesses to compete in international markets. It wastes vast resources on complying with needless paperwork. We can do better and we must.
12.
Is the FairTax fair? Yes, the FairTax is fair, and in fact, much fairer than the income tax. Wealthy people spend more money than other individuals. They buy expensive cars, big houses, and yachts. They buy filet mignon instead of hamburger, fine wine instead of beer, designer dresses, and expensive jewelry. The FairTax taxes them on these purchases. If, however, they use their money to build job-creating factories, finance research and development to create new products, or fund charitable activities (all of which help improve the standard of living of others), then those activities are not taxed.