If every worker in the US and all corporations paid the flat rates of 6 and 4 percent ..the figures came out higher than what the US is getting from taxes(income) now..quite a bit higher if I remember correctly. Remember no write offs..every body would pay. No getting out of it. Of course this will never happen. Too many people would fight it tooth and nail...especially the politicians. They wouldn't be able to peddle their influence in tax issues any longer..Lobbyists.. Tax lawyers..Lot of money there. Fabs is right..they wouldn't let it float. And a lot of people would go ahead and pay their taxes if they knew it was done fairly and equitably..which isn't true now. The tax code should not be too hard for the average taxpayer to understand...much less a tax lawyer.