Under Arizona’s financial responsibility laws, a driver must demonstrate that he or she is financially able to pay for damages caused during an at-fault accident. Proof of financial responsibility must be produced before a vehicle can be registered in the state.
Having a valid insurance policy in effect that has at least the minimum level of coverage required by the state will satisfy this requirement. Buying a bond, showing a certificate of deposit or making a cash payment of $40,000 will also do so.
Most people would find it much easier to buy AZ car insurance and pay the premiums than to find 40K in cash to put up as a deposit. If you think about car insurance as an investment, it may make paying the rates you are being asked to pay a bit easier to swallow.
For the cost of your annual premium, you get financial protection that covers you if you are ever in an accident. Instead of having to pay for the injured person’s medical bills, lost wages and even funeral expenses if the accident is a fatal one, your insurance company will look after this for you. It will pay for the damages, up to the policy limit you have chosen. You will still need to pay your deductible before the insurer will pay out any money, though.