[DManA]

Most significantly, he would let Americans choose to file taxes under today's rules or volunteer for a simpler, flatter rate, perhaps at 25 or 15 percent.

So now you have to do your taxes twice to see wich way costs less. Great.

[foxfield]

So now you have to do your taxes twice to see wich way costs less. Great.

Make that three times. Under the present scheme you have to check to see if you come under that Alternative Minimum Tax (AMT).

Tinker, tinker, tinker.

[phil_will1]

“Most significantly, he would let Americans choose to file taxes under today’s rules or volunteer for a simpler, flatter rate, perhaps at 25 or 15 percent.”

“So now you have to do your taxes twice to see wich way costs less. Great.”

I think you are forgetting about the AMT. In many cases, you would have to calculate your taxes 3 times. BTW, if you like a parallel flat tax system, you should love the AMT.