He wants to transition to the "Fair" tax, which is 33%. He's a nutcase.
Huntsman is a dyed in the wool Progressive, but he is the only one of the candidates to come up with a coherent policy thus far that is both doable and makes sense. The flat tax at 33% is murder and Mittens 59 points of double talk is insane.
http://online.wsj.com/article/SB10001424053111904583204576544703176083600.html