Your reinsurance program might look solid on paper, but headline numbers don't reveal whether your counterparties can handle the next major event. They might already be overextended, chasing yield in unfamiliar lines.
The reinsurance industry has shown this gap. The Gallagher Reinsurance Composite reported a 19.9% ROE for H1 2026. However, excluding a 28% reduction in natural catastrophe losses, the underlying ROE dropped to 13.8%, down from 15.7% two years prior. This isn't a resilience story; it's a market benefiting from favorable weather.
As an enterprise risk manager relying on reinsurance to backstop catastrophic exposures, you need a systematic way to evaluate whether your counterparties can perform when conditions change. Here's how to build that evaluation framework.
What You Need Before Starting
You'll need access to three categories of information:
Financial disclosures: Annual and quarterly reports from your reinsurance counterparties, including reserve development schedules, combined ratio breakdowns, and capital adequacy statements. Most publicly traded reinsurers file these with regulators. For private or offshore entities, request disclosure as part of your counterparty due diligence process.
Industry benchmarking data: Composite reports from reinsurance brokers like Gallagher Re, Aon, and Guy Carpenter that provide sector-level metrics. These reports typically publish combined ratios, ROE figures, and capital supply trends twice yearly.
Your own exposure profile: A current inventory of your reinsurance placements, including attachment points, limits, counterparty concentrations, and the specific perils covered under each treaty or facultative agreement.
You'll also need a spreadsheet or risk modeling tool capable of running scenario analyses. Excel works if you're comfortable with sensitivity tables. More sophisticated teams use catastrophe modeling platforms that integrate reinsurer financial strength into portfolio optimization.
Step-by-Step Implementation
1. Separate Headline Performance from Underlying Fundamentals
Reconstruct your counterparty's underlying combined ratio. Take their reported combined ratio and add back:
- Natural catastrophe losses below historical averages
- Favorable prior-year reserve development
- One-time investment gains or realized capital appreciation
For H1 2026, the Gallagher composite's combined ratio improved by 6.8 percentage points due solely to lower natcat activity. The underlying combined ratio actually deteriorated by 1.1 percentage points to 84.7%. When you normalize for expected catastrophe losses, the adjusted figure rose to 94.2%.
This calculation reveals whether your reinsurer is improving operationally or just benefiting from calm weather. If their underlying metrics are weakening while headline figures strengthen, they're vulnerable to mean reversion.
2. Assess Capital Adequacy Under Stress
Calculate your counterparty's premium-to-capital ratio. This metric shows how much underwriting leverage they're carrying. Then model what happens to that ratio under adverse loss scenarios.
Gallagher Re's analysis found the sector could absorb a $50 billion to $75 billion industry loss above normal second-half activity and still earn its cost of equity. But returning the premium-to-capital ratio to 2023 levels would require losses exceeding $150 billion above normal.
Run similar calculations for your specific counterparties. If they're carrying premium-to-capital ratios above sector averages, they have less cushion. If they've been aggressively growing premium while capital growth lags, that's a red flag.
3. Evaluate Capital Deployment Strategies
Reinsurers with excess capital face pressure to redeploy it. That pressure creates risk for you in two ways:
Shareholder return acceleration: When reinsurers return more than 100% of profits to shareholders, as Hannover Re, Munich Re, and Swiss Re each did in H1 2026, they're drawing down capital buffers to maintain dividend commitments. Check your counterparties' payout ratios. A sustained ratio above 75% suggests they're prioritizing distributions over capital retention.
Line expansion into unfamiliar risks: Bermudian reinsurers with limited organic diversification options are under particular pressure to enter new lines or pursue M&A. If your property cat reinsurer suddenly starts writing significant casualty business or announces an acquisition in a specialty line, evaluate whether they have the underwriting expertise to price those risks accurately. Alternative capital moving into casualty lines, a trend Gallagher Re flagged over the past year, adds competitive pressure that can degrade underwriting discipline.
4. Test for Reserve Adequacy in Casualty Lines
Most reinsurers are flagging reserve uncertainty in US casualty. If your program includes casualty reinsurance, request specific disclosure on:
- Reserve development patterns over the past three accident years
- The actuarial methods they use to estimate ultimate losses
- Any changes to loss pick assumptions in recent quarters
A reinsurer maintaining aggressive growth in casualty while peers pull back may be under-reserving to defend market share. That's a timing risk: they'll post strong results until adverse development forces reserve strengthening, at which point their capital position deteriorates rapidly.
Validation: How to Verify It Works
Your stress test framework should produce three outputs:
A counterparty resilience score: Rank your reinsurers by their ability to absorb a major loss event without impairing capital below regulatory minimums or triggering rating downgrades. Use this ranking to inform concentration limits in your reinsurance program structure.
Scenario-specific recovery expectations: For each major peril in your exposure profile (earthquake, hurricane, cyber event, casualty shock), calculate the expected recovery from each reinsurer under a 1-in-100-year and 1-in-250-year scenario. If any counterparty shows material recovery shortfall in scenarios you consider plausible, reduce your reliance on that counterparty or require collateral.
Early warning triggers: Define thresholds that prompt immediate review. Examples include: underlying combined ratio deteriorating more than 3 points year-over-year, payout ratio exceeding 80% for two consecutive quarters, or premium growth in new lines exceeding 20% annually.
Test your framework quarterly when reinsurer results publish. If your rankings change materially, that's your signal to engage your broker and potentially restructure placements mid-term.
Maintenance and Ongoing Tasks
Run a full counterparty stress test twice yearly, aligned with reinsurer reporting cycles. Update your scenario assumptions annually based on emerging risk trends and your own exposure changes.
Monitor three leading indicators between formal reviews:
Rating agency actions: Downgrades or negative outlook changes from A.M. Best, S&P, or Moody's often precede capital deterioration visible in financial statements.
Premium rate movements: If your reinsurer is cutting rates faster than peers in lines where you have coverage, they're either gaining efficiency (rare) or chasing volume to deploy excess capital (common). Request justification.
Management commentary on capital deployment: Earnings calls and investor presentations telegraph strategic direction. If leadership emphasizes M&A activity or new line development more than underwriting discipline, recalibrate your risk assessment.
The goal isn't to predict which reinsurer will fail. It's to ensure you're not overconcentrated in counterparties whose resilience depends on conditions that won't last. Because when natural catastrophe losses revert to trend, and they will, you need to know your program can still perform.
