What's the most appropriate tax rate for the highest earners?
That's been the raging debate in recent months, from the fiscal cliff negotiations to France's 75 percent tax rate.
So, we asked some of the top business minds attending the World Economic Forum what they thought the top tax rate should be.
We asked them to pin their preference on a board. It looked suspiciously like pin the tail on the donkey – but that wasn't intentional.
(Read More: French Government Denies Dropping 75% Tax Plan)