Taxachusetts is not considered a tax friendly state but, aircraft purchases are exempt from the 6.25% sales tax.
Also, there is a sliding scale of excise tax based on aircraft weight, payable yearly and is in lieu of personal property tax.
N4ZQ weighs less that 2500lbs [ :-) ], so I cough up $165 to the state.

Angier Ames
N4ZQ