What % of tax revenues should the rich (top 5%) pay?

[iBlah]

Kantor said:

Ideally, I would set it out something like this:

First $10,000 - Tax Free

Next $40,000 - 10%

Next $50,000 - 20%

Anything above - 30%

Britain's sytem is currently ridiculous.

how does Britain's system work? My cousin earns around $75,000 and he's taxed 43% or something like that.