MainSource Financial Group operates as the bank holding company for MainSource Bank. Through the Bank, the Company offers a range of financial services, including accepting time and transaction deposits; making consumer, commercial, agribusiness and real estate mortgage loans; renting safe deposit facilities; providing personal and corporate trust services, and providing other corporate services, such as letters of credit and repurchase agreements. The Bank offers various loans, such as commercial loans, commercial real estate loans, residential loans and consumer loans.