Making reinsurance spend visible and decision-ready

Reinsurance is frequently discussed as a premium purchase, yet its true cost to an insurer also includes claims paid away, commissions or profit returns, brokerage, taxes, collateral and funding effects. A simple net premium figure can therefore conceal whether cover reduced volatility, protected capital or merely moved dollars between periods. Finance leaders need a calculation that separates cash movements from the economic value of risk transfer.

For Australian insurers, that analysis sits alongside prudential oversight from APRA, AASB 17 reporting and a market spread across Sydney, Melbourne and regional insurers. General insurers, life insurers and captives may place cover with counterparties in London, Singapore and other global hubs. Australian market shorthand matters too: a treaty may be discussed as a “spare”, the “burning cost” may drive renewal pricing, and every treaty needs its terms translated into comparable data.

The starting point is a complete register of programs, covering proportional and non-proportional treaties, facultative placements, captives and any collateral arrangements. For each agreement, capture premium, claims recoveries, expenses and assumptions in the same currency and time basis. This creates an audit trail from the signed contract to the premium ledger and management report, while allowing a renewal team to challenge an assumption without rebuilding the program from scratch.

At IASA Conference, sessions on insurance accounting, finance, technology and risk give finance professionals a useful forum for testing these methods. The exhibit hall adds another route to discussions with software providers, consultants and specialist advisers. Peer exchange can expose practical issues such as inconsistent recovery data, delayed reconciliation and poor visibility of net cover cost.

Define the economic question first

Start by defining cost from the insurer’s perspective. The cash view records premiums, fees and recoveries when settled. The underwriting view adds earned premium and incurred claims, revealing whether a treaty is earning its expected economic margin. A risk-adjusted view compares total expected risk costs with and without the program, incorporating retained claims, capital usage, tail exposure and the value of volatility protection.

The choice depends on the decision. A treasurer may prioritise timing and liquidity, an underwriting manager needs loss cost, and a capital team needs a risk-adjusted result. A board may require all three. The cost of reinsurance programs should therefore be presented as a bridge from gross premium to the net retained outcome, with timing and risk effects made explicit rather than hidden behind a single ratio.

Set the calculation perimeter

Fix the perimeter before opening a spreadsheet. State the treaty, covered perils, geographic scope, policy year, accounting period, renewal basis and functional currency. Separate ceded premium from premium assumed, and distinguish earned amounts from invoiced amounts.

Commercial terms that define the arrangement

Then create one reconciled data set rather than allowing the treaty schedule, premium ledger, claims system and general ledger to tell different stories. Every material assumption needs an owner and an effective date.

Inputs that must reconcile

This shared base prevents a treaty from appearing profitable merely because recoveries were booked late, or expensive because a claim crossed a reporting date. It also supports drill-down from program level to an individual placement.

Build the cash and underwriting view

A practical cash calculation starts with net program cost: ceded premium plus taxes, brokerage and direct administration, plus the cost of collateral or funding, less claims and other recoveries received. Keep gross cash paid beside this net figure because timing can distort the result.

For quota share and surplus cover, apply the cession percentage to the agreed premium and claims base. Then deduct ceding commissions and any profit return, subject to the contract’s experience rules. As an illustration, A$10 million of premium at a 20% cession produces A$2 million ceded; after a A$1.2 million recovery and a 5% ceding commission, the net cost is A$700,000 before fees and funding.

For non-proportional layers, allocate premium to the layer, model attritional and large-loss recoveries above the attachment, and include reinstatement premiums. Expected recoveries must be probability-weighted and aligned with the same exposure and catastrophe assumptions. The premium alone is the price of uncertain cover; the recovery estimate shows its expected transfer value.

Capture claims recoveries and volatility

Claims are the most volatile input. Build expected recoveries from earned exposure, policy-level burning cost, rate changes, claim frequency and severity, and separate attritional losses from catastrophe or large-loss bands. Refresh the estimate with paid and reported claims development rather than relying only on the original renewal assumption.

Report actual recoveries and expected recoveries side by side. Explain movement through experience, rate, mix, volume, reserve development, exchange rates and timing. Use sensitivity and scenario analysis for tail events; for example, show the cash and capital effect if a Melbourne hailstorm or bushfire loss penetrates the layer.

Apply a consistent basis for outstanding claims, IBNR, discounting, reinstatement and foreign currency. A recovery is not cash until it is received, so the report should display both earned value and a cash-timing profile. This distinction is especially important when comparing a multi-year program with a one-year placement.

Align the result with Australian reporting

Australian statutory and capital reporting should sit alongside, not be confused with, management cost reporting. AASB 17 affects how insurance contracts are presented, while the reinsurance calculation must still reconcile to the entity’s ledgers and assumptions. Management can use additional cash, underwriting and risk-adjusted views, but each needs a clear bridge to the applicable reporting basis.

APRA’s General Insurance Capital Adherence framework, which commenced in July 2025, is relevant to many general insurers. Reinsurance credit can depend on counterparty quality, collateral and legal enforceability, not simply on the existence of a treaty. Capital reporting should therefore trace from modelled risk to the contracted recovery and any recognised credit.

Operational review also needs Australian legal and tax context. State insurance-duty rules and GST treatment require transaction-specific checks rather than a uniform assumption, while collateral documents may need Australian legal review even when the reinsurer operates offshore. Broader insurance perspectives from Gurans Life can inform benchmarking, but they should not replace locally validated assumptions.

Present a decision-ready cost report

Design the report in layers: a one-page executive summary, a contract-level schedule and an underlying variance bridge. Include gross premium ceded, direct costs, recoveries, net cash cost and net cost as a percentage of gross written premium. Name the denominator on every ratio and explain whether it is written, earned or in-force premium.

Variance analysis should distinguish rate, volume, mix, claims experience, reserve development, fees, profit commission, foreign exchange and timing. A bridge can show opening budget, movement in exposure, program changes, actual recoveries and closing forecast. This makes clear whether variance came from the market, claims, execution or the structure of the cover.

Controls should reconcile ceded premium to the ledger, recoveries to claims, and collateral to bank and trust records. Relevant technology suppliers can be explored through the IASA Vendor Connect, but automation should support—not replace—contract ownership, judgement and reconciliation.

Turn the calculation into governance and action

Treat the calculation as a recurring management process. Assign ownership of the treaty inventory to finance and reinsurance, claims to actuarial or claims teams, and assumptions to underwriting. Hold a monthly close, a quarterly scenario review and a pre-renewal challenge. Exceptions should be visible, dated and signed off.

Set decision thresholds before renewal discussions: acceptable net cost, minimum protection value, counterparty concentration, collateral quality, capital impact and recovery timing. Compare the existing program with alternative layers, retentions and facultative options using the same assumptions. Record the decision and its evidence in the renewal file.

Use this framework to build the next reinsurance board pack from the signed treaty schedules, premium and claims ledgers, and collateral confirmations. Present cash cost, economic value, capital effect and unresolved data gaps together, then take the final recommendation to the executive committee with a clear view of the risk the organisation is buying.