We still don't really know what his tax plan is.
I heard him in an interview that the upper federal tax bracket will be 55%. This combined with state and local taxes means it will be closer to 75% (not including sales tax and countless other taxes that are paid).
It's just like in Norway and Sweden (the countries he wants to emulate). On paper, it looks like a small amount. But when it actually comes down to it, it makes it nearly impossible for even things like startups to thrive.
I also heard him say that the money will only come from 'greedy wallstreet executives' (I got a flyer in the mail saying exactly this).
I think many people will be in for a rude awakening when the middle class has to foot the bill for all of this and the system is substandard compared to the rest of the world.