I live in New Jersey but just bought a used car from a dealer in Ohio. The dealer did not charge me sales tax because I would have to pay NJ sales tax when I register the car. I registered the car today, but was not charged sales tax. I think the DMV registered the car as if I was transfering the title from OH to NJ (as you would do when moving between states), and not as a new purchase. Did I just get away with avoiding the taxes, or will they pick up on it in the system and charge me down the road? And can they even do anything since the car is already registered? Am I in the clear?