When selecting life-insurance a person has to rely on subjective decisions of insurance agents or try to analyze all existing life-insurance products for himself. Not only there is a considerable amount of life-insurance products, but also their rules differ significantly. Therefore, a person who wants to choose the best life-insurance for himself must dedicated vast time to this task and have a great understanding of life-insurance in general. The outlined best life-insurance problem is solved by designing the Best Life Insurance Selection System, which is able to assess person’s finance liabilities, determine which type of life-insurance and on what conditions he needs, and where he is able to purchase it. The Most Suitable Life-Insurance Selection System designed in this work was subdivided into the following subsystems: Information about Life-Insurance, Finance Liabilities Assessment, Life-Insurance Type Selection, Conditions of Life-Insurance Selection, and the Best Life-Insurance Selection subsystems. The Life-Insurance Type Selection subsystem design was based on CommonKADS knowledge engineering methodology.