"Under Bush-republican economics, if you derive most of your income from dividends, interest on bonds, capital gains, or estate inheritance ....you'll never pay more than a 15% effective tax rate. At most. "
1) Dividends... taxed as ordinary income unless they meet the criteria for Qualified dividend income... then it is 15%
2) Taxable bonds... income is taxed at ordinary income tax brackets up to 28%
3) Muni bonds... city/state/non-profits can be federal tax exempt (state as well if your state allows and you live in the state the bond was issued). For profit muni bonds are subject to the AMT.
4) Capital gains... short term are taxed as ordinary income up to 28%. Long term gains at 15%.
5) Inheritance taxes... same rules apply, but it is generally the wealthy that pay estate taxes (although the minimums were never truly adjusted for inflation, so now more small business owners/farmers/land owners are getting hit with it.) and if you think that is only 15%, then you are nuts. They get hammered.