Universal Life is a type of permanent life insurance based on a cash value. That is, the policy is established with the insurer where premium payments above the cost of insurance are credited to the cash value. The cash value is credited each month with interest, and the policy is debited each month by a cost of insurance (COI) charge, which is drawn from the cash value if no premium payment is made that month. The interest credited to the account is determined by the insurer; often it is pegged to a financial index. Because only the amount of interest credited and not the cash value itself varies, UL policies offer a stable investment option.

Universal life is similar in some ways to, and was developed from whole life insurance. The potential advantage of the universal life policy is in its flexibility and the potential for greater cash value growth if the interest rates offered outperform the insurer's general account (that whole life policy cash value growth is based on). Universal life is more flexible than whole life in two primary ways: the death benefit and usually the premium payment are flexible. The death benefit can be increased (subject to insurability) and decreased without surrendering the policy or getting a new one as would be required with whole life.