While looking at some stats on Powerball, I found that Puerto Rico residents do not have to pay US income tax on lottery winnings. WTF??? After doing a bit of googling, it seems that PR residents do not pay Uncle Sam any taxes on money earned within the Commonwealth of PR. Is that true for all territories, or just PR? What's the logic here? Why should they get a free ride.
On a related note (but not a tax question), what's the net flow to/from Puerto Rico? Do more dollars flow from DC to PR, or vice versa.