The FairTax is a revenue-neutral consumption (i.e., sales) tax that would completely replace all other federal taxes, including income, corporate, and the highly regressive payroll taxes. There would be no need to file a tax return, and the hated IRS would be abolished.
Sound interesting? You can learn more at FairTax.org. There are also several books written about the FairTax, including The FairTax Book, which I have read and recommend.
In my own words, here are some other things that I like about the FairTax and one small thing that I don't.
There is something that I don’t like about the FairTax. Namely, accumulated wealth that has already been taxed under the current system would be taxed again when it is spent at retail. This is offset by the fact that embedded taxes (that would be eliminated under the FairTax) accounts for almost the same amount anyway, so it is actually a very small price to pay for such monumental gains.