The Australian general insurance sector carries one of the largest capital surpluses in its recent history. The Australian Prudential Regulation Authority's (APRA's) quarterly data, released in May, shows total eligible capital of $39.4 billion in the March 2026 quarter against a prescribed capital amount of $21.7 billion - leaving the industry with $17.7 billion above its regulatory minimum. The coverage ratio is approximately 1.81 times the requirement.
For regulators, policyholders and the reinsurance market, that capital position is reassuring. The industry is not under financial stress. But a closer look at the quarterly trajectory reveals something worth understanding: the December 2025 catastrophe losses eroded the capital buffer by $2.3 billion in a single quarter, and the March 2026 recovery has been only partial.
The other factor: reinsurance premiums. The APRA data also shows that Australia's ratio of reinsurance premiums to insurance service revenue is among the highest in any developed-world market. Grace Ng, a partner in KPMG's general insurance actuarial practice, agreed that the country's reinsurance spend is "relatively high" due to its exposure to natural perils.
"As a result, Australian insurers rely heavily on global reinsurers to access catastrophe capacity and diversify risk," said the Sydney based partner. "This reliance can increase exposure to global reinsurance pricing cycles and market conditions."
After last year's relatively benign period for natural perils, insurers' capital position looked good. Capital in excess of the prescribed capital amount reached $19.3 billion in the September 2025 quarter - its highest point in the dataset, which runs from September 2023. In the December 2025 quarter, following the householders catastrophe that produced a $1.08 billion underwriting loss for that class alone and reduced total industry profit after tax to $134 million, the capital surplus fell to $17.0 billion. That is a reduction of $2.3 billion in a single quarter.
The March 2026 quarter saw a partial recovery to $17.7 billion, as investment income and improved underwriting results in most classes contributed to capital replenishment. Total eligible capital rose from $38.95 billion to $39.39 billion over the same period.
The prescribed capital amount itself — the regulatory floor — has been broadly stable at $21.7 billion in recent quarters, reflecting a relatively consistent risk profile in the insured book and limited change in the asset risk charge and insurance concentration risk charge components.
The $2.3 billion reduction in the capital buffer between September and December 2025 is, in absolute terms, manageable. The industry remained comfortably above its regulatory minimum throughout. But the speed of the movement is instructive.
One severe catastrophe quarter - not an unprecedented event in the Australian context - compressed the industry's capital surplus by approximately 12% in three months. Two consecutive severe quarters, or a single event of greater magnitude than those seen in December 2025, would test that buffer more substantially.
As APRA itself has warned, the past year was the most expensive claims year since 2022 for the sector. Major bushfires in Victoria and flooding in North Queensland have already contributed to claims activity early in 2026, and APRA's general insurance Climate Vulnerability Assessment is examining how physical and transition risks may affect insurance affordability and capital planning over the medium term.
The capital position also has reinsurance implications. As Insurance Business has reported, the ratio of reinsurance premiums to insurance service revenue among Australian general insurers is among the highest of any developed-world market. That elevated reinsurance cost is, in part, the price of protecting the capital position against catastrophe volatility. The APRA data demonstrates why that cost, significant as it is, reflects a genuine economic purpose.
"A higher level of reinsurance purchase is generally consistent with the risk profile of the Australian market and serves as an important mechanism for protecting capital and earnings," said Ng. "However, it also highlights the ongoing challenge of maintaining financial resilience while managing insurance affordability for policyholders."
For brokers, the capital adequacy data is relevant in ways that go beyond the abstract. A well-capitalised industry is one that can honour claims at scale, maintain capacity through hard periods, and avoid the kind of abrupt market withdrawals that have characterised less stable insurance markets globally. Australia's capital position means that, despite the December 2025 stress quarter, the industry enters the remainder of 2026 in a position of financial strength.
The caveat is that the data covers the period through March 2026. Early 2026 catastrophe activity - including further bushfire and flood events - will have continued to test the book. The next APRA quarterly release will provide the first read on how capital has moved in response.
Source: APRA, Quarterly General Insurance Performance Statistics Database, September 2023 to March 2026, released 29 May 2026. All figures are in Australian dollars and based on APRA-authorised general insurers. Lloyd's Australian operations are not included.
