Insurance is essentially a contract between the insurer and policy owner. Insurer agrees to pay an amount to the person insured or his nominee at any unfortunate event (according to the policy) or at the date or maturity or at death of the policy owner. Policy owner has to pay a fixed amount called premium in periodic intervals (monthly, quarterly, half yearly or yearly). Premium amount varies depends on many factors like age of the policy owner, scheme, type of the policy, sum assured etc.