AustralianSuper was the worst retirement fund for complaints last financial year, as grievances more than doubled to 1750, or more than two times the average of other big providers on a per-member basis.

There were 6.1 complaints per 10,000 customers made to the Australian Financial Complaints Authority in the 2023 financial year about AustralianSuper, compared with an average of 2.7 and far outstripping the next highest, which was Cbus with 4.4.