[LIforrelaxin]

So, yes you can register the car in NH, to your residence at mirror lake.... But you will have to sign a waiver stating you will not operate said vehicle outside of New Hampshire. I have done this with Boat trailers many times.

But that is only the NH part of the story. If you end up taking that car into Ma. NH will waive the waiver you signed when Ma. gets angry at them, and you will have no where to hide. Massachusetts will then come after you for the sales tax, excise tax, registration etc. and also charge you with driving an unregistered vehicle.

Lots of people got caught in this scenario, back in the 80s.... and NH had to create the wavier for people to sign to keep them out of the middle. The major issue, comes down to the sales Tax, that you are trying to get around having to pay.... And to the Commonwealth of Mass. that is the only thing they see when and if they catch you.

My advice, is to wait to by the car if you can... or look into changing your permanent residence to NH which should be fairly straight forward.... If you know your moving in April or May......