Like many Credit Unions and Building Societies in Australia today, Big Sky is an amalgam of several mutual organisations that were originally created to serve the employees of one specific employer.
Big Sky originates out of the BHP Employee’s Credit Co-Operative and today features the memberships of five other mutuals; Lysaght Employee’s Credit Co-operative, BP Employee’s Credit Co-Operative, RACV Credit Union, GMH Credit Union and Lifeplan Australia Building Society, (a wholly owned subsidiary of Australian Unity, itself a mutual organisation).