My partners in four startup investments live in the Netherlands and Switzerland. Both have wealth taxes. The negative impact on NL's and CH's growth and employment rates is a very simple number: zero. None of us has ever, ever considered tax rates when evaluating a startup investment. We've invested in startups in the USA, Latvia and Ukraine (now relocated to Warsaw) with utter indifference to tax rates. This zombienomics argument for trickle down prosperity is an old repeated failure and discredited enough to be retired. Before you sound off on how tax rates impact investor returns talk to some real capitalists instead of showing once more why economists make the worst traders and investors. The exception was, of course, John Maynard Keynes, who was the Warren Buffett of his generation (12% compounded annual returns from 1921-46 and a fortune made in forex trading). As George Bernard Shaw once said, if you laid every economist end to end around the world you'd never reach a conclusion.