The basic concept of insurance is that one party, the insurer, will guarantee payment for an uncertain future event. Meanwhile, another party, the insured or the policyholder, pays a smaller premium to the insurer in exchange for that protection on that uncertain future occurrence.
Insurance is a way to manage your risk. When you buy insurance, you purchase protection against unexpected financial losses. The insurance company pays you or someone you choose if something bad happens to you. If you have no insurance and an accident happens, you may be responsible for all related costs.
Its aim is to reduce financial uncertainty and make accidental loss manageable. It does this substituting payment of a small, known fee—an insurance premium—to a professional insurer in exchange for the assumption of the risk a large loss, and a promise to pay in the event of such a loss.