Motor vehicle sales tax rates differ greatly within your United States in the usa. 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 location to decide to purchase. However, if you are trying avert the car tax in your home address, then go ahead and buying a new home to park your car in because unless you keep a house or have a home in the state in question you risk tax evasion. Car d...