BMO Harris Bank Logo and Tagline BMO Harris Bank, N.A. is a United States bank based in Chicago, Illinois. It is a member of the Federal Reserve System. The bank is a subsidiary of the Canadian multinational Bank of Montreal, commonly known as "BMO", which owns BMO Harris Bank through the holding company BMO Financial Corporation. Quick info \tType Subsidiary \tIndustry Banking \tFounded 1882 \tHeadquarters Chicago, Illinois, United States \tParent Bank of Montreal \tWebsite bmoharris.com Tagline We're here to help. The bank you know... and More! Logo BMO Harris Bank Logo Search tags: BMO Harris Bank tagline, BMO Harris Bank slogan, BMO Harris Bank logo, bank taglines, bank slogans.