I get that 50% is a nice round number, but what's the moral or reasonable significance of that? Meanwhile, you're looking at top marginal rates. That's not the

I get that 50% is a nice round number, but what's the moral or reasonable significance of that? Meanwhile, you're looking at top marginal rates. That's not the total rate. A single person making $500k a year has a total tax rate (federal plus state) of 41%. It gots up to 46% at $1,000,000/yr. And the rate goes down if they marry, have kids, etc.