This result is based on a detailed study of 13 mergers that occurred over the past three years involving 22 super funds that represent $410 billion in member's money, highlighted in Rainmaker's Super Benchmarking Report.
Mergers have become more common since the findings of the Productivity Commission were publicly released in January 2019.
Of the 13 mergers, 11 were traditional mergers, while two were integrations of super funds, being the combining of Virgin Super and Mercer Super Trust and the integration of the trustee offices of Catholic Super and Equipsuper.
In all 11 of the traditional mergers the more expensive fund's fees lowered, with an average decrease of 21%.
For the fund with lower fees in the traditional mergers, seven of the 11 saw their fees drop, a reduction of 5% on average.
"Mergers have created efficiencies and economies of scale for the funds, which has led to members being better off,"said Alex Dunnin, executive director of research at Rainmaker Information.
"Regulators and political leaders continue to heap pressure on funds to merge, particularly if they lack scale or consistently under perform."
Nine of the 11 funds saw their fees drop or stay the same when comparing the average pre-merger fees against the post-merger fees.
Of these results the average fall was 14%.
However, of the two fund integrations, fees actually went up on average across the funds.
Dunnin said, "fees don't go down just because a super fund merges, they go down because the trustees redesign the product."
"Products are more likely to be redesigned in a merger but not when funds just combine their back offices."
Seven mergers occurred in the 18 months since the findings of the Productivity Commission were announced, compared to six in the two years prior.
Further to this, several other large-scale mergers have been announced since Rainmaker conducted this research, including:
On top of this, more details have been announced regarding the merger between MTAA Super and TasPlan.
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Ord Minnett, Count Financial and Industry Fund Services achieved the largest net growth in their number of financial advisers in 2022.
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