As you say, tax should be asymptotic. Something like "You keep $a n^b$ of what you earn", for some b < 1. For example, say you keep n^.9, then a 40% pay increa

As you say, tax should be asymptotic. Something like "You keep $a n^b$ of what you earn", for some b < 1. For example, say you keep n^.9, then a 40% pay increase will be a 36% increase after tax. No worries about what tax brackets you may be in or be about to enter. This way the 'tax percentage' naturally converges from 0% for people who earn little, to 100% for people who earn a lot. While still basically letting everyone have asymptoticly all their money. Hell, even paying n(1-1/logn) would make more sense than what we have now.