Through Irwin's principal lines of business – Irwin Mortgage Corporation, Irwin Union Bank, Irwin Home Equity Corporation, Irwin Commercial Finance and Irwin Ventures – a comprehensive range of financial services are provided to consumers and small businesses in North America. People and finance are the focus of this organization, so the trademark, a capital "I" with a lower case dot, can either take on a playful human quality or morph into mathematical symbols.