Then they must of have gotten it from House Speaker Dennis Haster a few years ago when he was being interviewed about a book he wrote on his life on H&C on Foxnews. Mr. Hannity asked Mr. Haster to throw out a theoritical number on a Nation Retail Sales Tax and Haster stated "23%".
The fair tax rate is 30% tax exclusive - which is how sales taxes are customarily done - which is also 23% inclusive - the way income tax rates are always done... whether they're income, payroll, estate, gift, self -employment etc.
I haven't seen much in the way of reports on the Tax Commission hearing featuring the Fair Tax witnesses. Too bad the small plane panic kept the hearing off CSPAN, at least so far as I could tell. Did John Linder appear as a witness?