Insurance Australia Group Limited

The Business

IAG underwrites home, motor, commercial, and speciality insurance across Australia and New Zealand through brands including NRMA, CGU, RACV, and State (NZ). Together with Suncorp, IAG controls roughly 55% of Australian personal lines insurance, a market structure reinforced by regulatory barriers and brand-driven renewal rates around 90%. The company retains approximately 58% of gross written premiums after ceding the rest to reinsurers, most notably through a five-year catastrophe cover arrangement with Berkshire Hathaway and Canada Life that runs through FY29. This reinsurance platform is a genuine structural advantage, reducing earnings volatility by an estimated 200-300 basis points relative to peers.

Recent Performance

FY25 delivered reported earnings per share of 57.5 cents, up 52% on FY24's 37.9 cents, which itself reflected a weak prior year affected by elevated natural catastrophe costs. The headline flatters. Roughly 10 cents of that EPS came from a non-recurring $330 million release of COVID-era business interruption provisions. Strip that out and underlying earnings were closer to 47-48 cents. The stock has re-rated materially over the past two years as the hard pricing cycle lifted margins, with the underlying insurance margin reaching 15.5% in FY25.

Outlook

The next two years bring normalisation, not deterioration. FY26 earnings per share are forecast at 43.0 cents as the business interruption release drops out, representing a 25% headline decline that reflects accounting rather than operational weakness. Underlying insurance margins compress gently from 15.2% to 15.0% by FY28 as the hard pricing cycle fades and New Zealand margins revert from elevated levels. Net earned premium growth of 4-5% annually, driven by premium rate increases and the full-year contribution from the RACQI auto club acquisition, provides a modest tailwind. Claims modernisation savings of $245 million in run-rate benefits offer a structural offset to inflation pressure.

Key Risks

Natural catastrophe severity is the largest single risk, with a 55% probability of exceeding the annual allowance in any given year. Claims inflation driven by oil at $108 and elevated building costs could compress margins by 100 basis points. FY26 earnings normalisation, if consensus expectations of 48 cents prove too high versus our 43 cent estimate, creates a de-rating catalyst as the market reassesses normalised earnings power.

What to Watch

The thesis-defining event is the FY26 full-year result in August 2026, which will reveal whether the market's 48 cent consensus or our 43 cent estimate better captures normalised earnings power.

• Q3 2026 ACCC decision on RACI acquisition — approval (35% probability) would validate the growth-through-consolidation thesis and add meaningful premium scale.
• January 2027 CY27 reinsurance renewal — pricing outcome signals whether the favourable Berkshire arrangement can be sustained or extended beyond FY29.

Company Description

IAG operates through three divisions. Retail Insurance Australia (RIA) is the largest, contributing roughly $9.6 billion in gross written premiums in FY26 through the NRMA, CGU, RACV, and WFI brands across personal and commercial lines. Intermediated Insurance Australia (IIA) serves broker-distributed commercial customers, contributing approximately $4.6 billion. The New Zealand division, operating the State and AMI brands, adds around $3.8 billion. In total, IAG writes roughly $18 billion in gross premiums annually, retaining about 58% as net earned premium after reinsurance, which is the revenue base against which margins are measured.

The company completed the $855 million acquisition of RACQI (the Queensland auto club's insurance business) in FY25, adding roughly $1.5 billion in annualised premiums. A further acquisition of RACI (the South Australian equivalent) is pending but faces a hostile competition regulator, with a 65% probability of being blocked.

Where the Growth Is

The most consequential growth driver is not a revenue line but a cost one. IAG's Enterprise Platform and claims modernisation program has identified $245 million in run-rate savings, delivered through the migration of over five million policies onto a unified technology platform and the deployment of AI-assisted claims processing. The admin expense ratio has scope to decline by approximately 130 basis points over the coming decade as this investment scales. Execution on this program is the single most valuable lever management controls.

Competitive Position

IAG and Suncorp together control approximately 55% of Australian personal lines insurance, a concentration ratio that has held steady for over a decade. This duopoly is reinforced by three factors. First, brand-driven renewal rates near 90% create high switching costs for policyholders who value claims experience and familiarity. Second, regulatory capital requirements (APRA mandates substantial reserves relative to premiums) create barriers to scale entry. Third, the auto club partnerships (NRMA, RACV, RACQ) provide distribution channels that new entrants cannot easily replicate.

The five-year catastrophe reinsurance arrangement with Berkshire Hathaway and Canada Life, running through FY29, is a distinct competitive advantage. It smooths earnings volatility by transferring peak catastrophe risk to capacity providers with the strongest balance sheets in global reinsurance. No Australian peer has disclosed an equivalent arrangement at this scale or duration. These advantages are deeply entrenched and unlikely to erode within five to seven years, though they require continuous execution to sustain.

Management & Capital Discipline

CEO Nick Hawkins has led IAG since 2021, delivering consistent improvements in underlying insurance margin while maintaining a disciplined capital return framework. The company targets a 60-80% payout ratio and runs a $150 million annual share buyback, which reduces the share count by roughly 20 million shares per year. The RACQI acquisition was executed cleanly at $855 million, with reinsurance integration completed by January 2026.

One pattern worth noting: management's guidance framing is deliberately conservative. The phrase "bottom end expected" has historically preceded guidance upgrades, a signalling strategy that maintains credibility with the market but may cause estimates anchored to the conservative end to understate near-term earnings. This is not a criticism. It is a deliberate approach to expectation management that has built trust with institutional investors over multiple cycles.

Financial Position

IAG's CET1 multiple (a measure of regulatory capital adequacy, expressed as a ratio of capital held to the minimum required by APRA) sits at 1.18 times, which is adequate but not generous following the RACQI acquisition. The balance sheet carries $2.9 billion in subordinated notes, which function as regulatory capital instruments rather than traditional corporate debt. Total equity attributable to parent shareholders is approximately $7.3 billion. The dividend is well covered at a 70% payout ratio, and the buyback is discretionary, providing flexibility if capital needs to be preserved. The company could weather a moderate downturn without cutting its dividend, though a severe natural catastrophe event combined with RACI capital deployment would compress buffers meaningfully.