Roy Morgan Research CBA leads the Big 4 banks for customer satisfaction, while Beyond Bank tops the sector overall Country: Australia Source: Roy Morgan Single Source (Australia). January 2005 â October 2020, n = 23,526. Base: Australians 14+. New data from Roy Morgan shows small drops in customer satisfaction between September and October 2020 across most parts of the industry. But the Big 4 banks, Building Societies and Credit Unions are all still scoring higher than they were a year earlier. In October 2020, 80.1% of Australia’s bank customers were satisfied. This is down 0.2% from the previous month, but up 0.6% compared to the October 2019 rating. Satisfaction for the major four banks as a group is 76.9%, down 0.4% on September but up 0.1% compared to a year earlier.