[Old North State]

Flat tax is the way to go.
I agree. Most of the ad valorem and sales tax schemes used in foreign countries that I am familiar with wind up being used to augment progressive income taxes anyway. The simplest solution is almost always the best(pace, William of Ockham).

[Phantom Lord]

Most of the ad valorem and sales tax schemes used in foreign countries that I am familiar with wind up being used to augment progressive income taxes anyway.

Under the Fair Tax the Income Tax and payroll taxes are eliminated. So there would be no augmenting of income taxes with the sales taxes.

[JeffAtlanta]

The simplest solution is almost always the best(pace, William of Ockham).

How is Flat Tax any simpler? The current system is very complex and just reducing the tax rate tiers doesn't make it any less complex.