Flat Tax

A controversial technique of Society Design.

Changing the Income Tax to have a single fixed %, rather than a progressive rate (where you pay a higher incremental % as you have more income).

http://en.wikipedia.org/wiki/Flat_tax

The key is to not just change the rate structures, but to eliminate all complexity in the system at one time (strange types of deductions/credits, etc.). That may actually increase the taxes of some tricky rich people.

SteveForbes is a fan, which doesn't help.