Why would someone on true welfare pay any tax? No earnings should mean no taxes to pay.

The argument against a flat tax was that the percentage would be such that the bottom bracket would actually end up having to pay more than they do now. But if a flat tax were to cover all business as well I believe we would pay very little in tax. I've quoted Warren Buffet before on here but he stated that if the top 450 corporations would pay the tax they should be paying then no American would have to pay any tax at all. A zero deduction flat tax, however, would radically alter the American economy. There would be no subisdies for R & D, investments, real estate, etc. But, true capitalism shouldn't include subsidies that artificially prop up businesses and industries any way. And it would kill the tax prep profession but save the tax payer billions via a drastically reduced IRS. Imagine a world where congress decides on the next years budget which then equates into the tax percentage all Americans must pay. A huge incentive to keep that budget within reason without pork or the voters will have your head. Very measurable to the voters if their percentage went from 10% to 12%. It would have to be an absolute zero deductions or else Congress would gradually throw in perks and morph it into what it is now. Of course it's all idealistic and will never happen.