@maporsche,
Here's how my income bracket would break down if someone's income was at the upper end of each bracket.
Rate--Income---------Taxes------------Total Taxes---Total Tax Rate
5%----$10,000---------$500-------------$500------------5%
10%---$20,000---------$1,000----------$1,500----------8%
15%---$70,000---------$7,500----------$9,000----------13%
20%---$140,000--------$14,000---------$23,000--------16%
25%---$210,000--------$17,500---------$40,500--------19%
30%---$375,000--------$49,500---------$90,000--------24%
35%---$500,000--------$43,750---------$133,750-------27%
40%---$750,000--------$100,000--------$233,750------31%
50%---$3,000,000------$1,125,000-----$1,358,750----45%
60%---$10,000,000-----$4,200,000-----$5,558,750----56%
70%---$40,000,000-----$21,000,000----$26,558,750---66%