Australia's $4.8 trillion super system has become financial infrastructure
Australian superannuation assets have reached almost $4.8 trillion — around one-third of the financial system. The RBA says super has historically stabilised markets, but its growing size and ageing membership create new financial-stability risks.
Australia's superannuation system was created to finance retirement. At almost $4.8 trillion, it has become something more: a major component of Australia's financial infrastructure.
Total superannuation assets reached $4.77 trillion in June 2026, up 9.5% over the year. The Reserve Bank estimates super now represents around one-third of Australian financial-system assets, with the sector expected to continue growing until at least the 2050s.
That scale changes the financial-stability question.
Historically, superannuation has acted as a stabilising force. Members generally cannot withdraw their savings before retirement, leverage within funds is limited, and compulsory contributions provide a reliable stream of new money.
In the year to June, contributions totalled $236.3 billion, while benefit payments were $148.2 billion. Net contribution flows remained strongly positive at $77.7 billion.
That allows funds to invest through periods when other investors may be forced to sell.
APRA's first system-wide stress test illustrates the point. Four major banks and six large super funds were subjected to liquidity stresses more severe than anything Australian banks had experienced in the previous 50 years, alongside member withdrawals and switching well above COVID-era levels.
All participating institutions maintained sufficient liquidity. APRA also found super funds could help stabilise banks by supplying equity capital during a broad financial shock.
But size creates new vulnerabilities.
Around half of the assets of APRA-regulated super funds are now invested offshore. That improves diversification, but also increases foreign-exchange hedging and liquidity requirements when the Australian dollar falls.
The system is also ageing. More members will move from accumulating savings to retirement, when they can withdraw capital or receive pension payments.
The RBA stress-tests a scenario in which members switch out of risk assets at four times the quarterly rate observed at the start of COVID-19. It finds funds could largely meet that demand by selling international equities rather than Australian assets.
That is reassuring — but the RBA's warning is forward-looking.
As super grows and retirement withdrawals rise, decisions by a relatively small number of very large funds could increasingly affect banks, asset prices, foreign-exchange markets and market liquidity.
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