The general answer is soon. You really need to get a new insurance policy as soon as you move to a new state, particularly if that state is going to be your “domicile” and you have employment there. If you are visiting a state without any intention to work there, the insurance from your domiciled state will be active and will in fact change a bit to conform with the minimum limits required by the new state. If you are going to work and live in the state your current insurance carrier will most likely transfer your policy and issue a conforming policy based upon state law with little or no hassle. You will usually be assigned to an agency that is close to where you are going to live. This is really a painless process unless the insurance company currently insuring your car isn’t “admitted “to do business in the state where you are moving.