pb4uski
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Actually I don't need to follow the thread; doing that is optional.
My point is that when one compares buying a car from a private party to buying a car from a dealer, one consideration -- in SOME states -- is that if you buy a car from a private party, you will pay tax on the full purchase price, when you go to register that car, whereas if you buy a car from a dealer, and trade your old car into that dealer, you will pay tax only on the "net" purchase price (that is, the price of the new car less the value given for the trade). This is not the case in every state. And there may be countervailing considerations that suggest it is better to buy privately. But in at least some states, it is a potentially relevant consideration.
I agree that if one is in a state that does not allow a credit against the tax on the replacement car for a car that you sold rather than traded that it would be a consideration... I'm not sure how many states to that... it seems a bot onerous but the auto dealers are politically powerful and I can se it would be in their interest to have such a process.