Motor vehicle sales tax rates differ greatly within the United Nations. Car tax by state often varies within counties and locations. If you are moving to another state, calculating car tax prior to moving get useful in determining when and where to own. However, if you are trying avoid the car tax in a home office address, then go ahead and get a house to park your car in because unless your very own a house or live the state in question you risk tax evasion. Car dealers and local motor vehicle ...