The top few percent will pay a lower _percentage_ of their income to the
government in tax than a middle earner would (a high earner will
typically save more, or in other words their marginal propensity to save
is higher) - they are also able to save more and afford better
accountants who will help them avoid paying tax !
It matters how you look at income taxes (figures never lie, but
liars figure). The top 3% of earners pay about 40% of all income
taxes. The top 1/12% pay about 10% of the taxes. Why do the super
rich guys want a flat tax? And the other obvious problem, you pay
a lot of taxes, probably more than you realize, besides income tax.