How Soon After Buying A Car Does It Need To Be Insured? 
In most if not all states , auto insurance is required in order to register a car for use on public access roads and highways . So the short answer to your question is right away because you will need to provide an insurance ID card and binder -LRB- if there is financing involved -RRB- to your dealership so that they can complete the transaction and register your car . Be sure to keep your INsurance Professional in the loop when you are shopping for a new car . That is the best way to make sure you have the insurance protection and documentation that you need , at the time you need it . 