A universal wage would work. It's no sense in hiding from receiving it, in case that should be a problem. And the money has to come from somewhere, and the poor

A universal wage would work. It's no sense in hiding from receiving it, in case that should be a problem. And the money has to come from somewhere, and the poor simply can't pay, so the rich will have to. Not directly, necessarily, but whatever part of the economy ends up having the capacity to be taxated that much must be a sector the rich own.