About Us The I. S. I. COMPANIES I. S. I. Consulting - Our Comprehensive Financial Services creates a Comprehensive - Holistic approach to helping clients in matters of Investment and Advisory services*, estate planning, charitable giving, business insurance, retirement planning, employee benefits, specific product, and plan design tailored to your needs.Our Mission - To help our clients become properly protected, debt-free, and financially independent. Insurance Services, Incorporated - "where Service is our middle name." Life, Health, Group, and Annuity Sales to the General Public. I. S. I. Marketing - Consulting services to Insurance Firms throughout the Midwest.