Reinsurance Under SAM and IFRS 17: A Practical Guide for South African Insurers

Reinsurance Is More Than Capital Relief

A well-designed reinsurance programme can reduce volatility, protect against large and catastrophe losses, support solvency, provide underwriting capacity and improve the resilience of an insurer's business plan. But those benefits depend on considerably more than purchasing sufficient limit.

The programme needs to be appropriate for the insurer's risk profile, provide genuine and enforceable risk transfer, remain recoverable when losses occur, be reflected correctly in SAM and IFRS 17, and be supported by appropriate governance, data and administration.

Outwards reinsurance — and retrocession where relevant for reinsurers — must be appropriately structured, documented and reflected in the insurer's financial-soundness calculations. GOI 3.3 explicitly requires insurers to maintain a Reinsurance and Other Risk Transfer Policy, perform reinsurer due diligence, administer and document arrangements appropriately, and satisfy eligibility requirements before reinsurance can be recognised as risk mitigation for financial-soundness purposes.

What Is the Programme Trying to Achieve?

A reinsurance programme should be assessed against more than its premium cost. The appropriate structure depends on the insurer's portfolio, risk appetite, capital position, earnings tolerance, catastrophe exposure, growth plans and capacity to retain losses.

Analysis may therefore consider the balance between proportional and non-proportional cover, retention levels, limits, catastrophe protection, aggregate cover and the concentration of risk within particular classes, geographies or perils.

How Reinsurance Affects the SAM Capital Position

Figure 1 · Flow

The capital benefit is not simply the gross risk less the ceded share. Several distinct steps determine the net impact on SCR.

1

Gross insurance risk

Underwriting exposure before reinsurance

2

Apply eligible reinsurance structure

Net underwriting exposure after recognised risk mitigation

3

Allow for counterparty / default exposure

The reinsurer itself introduces credit risk

4

Diversification and other SCR interactions

Structure, limits, retentions and portfolio composition

5

Net impact on SCR

Final capital position after reinsurance

The effectiveness of the programme therefore depends on its structure, recognition as eligible risk mitigation and the additional risks introduced by the reinsurance arrangement itself.

Where Reinsurance Becomes Difficult in Practice

A small number of themes recur in reinsurance work, and each can be the difference between a programme that delivers its intended benefit and one that generates avoidable questions at renewal, audit or regulatory review.

Capital Relief Is Not Automatic

Purchasing reinsurance does not automatically mean the full economic benefit can be recognised in the SAM capital calculation. For reinsurance to be recognised as a risk-mitigation instrument for financial-soundness purposes, the arrangement needs to satisfy the relevant eligibility requirements, including meaningful insurance-risk transfer and appropriate contractual terms.

This makes treaty structure and documentation important not only legally, but actuarially: the capital model needs to reflect the protection that is actually enforceable under the contract. GOI 3.3 recognises an arrangement as risk mitigation only where it qualifies as eligible reinsurance.

The Model and the Treaty Need to Describe the Same Cover

A capital or reserving model may assume a particular retention, limit, percentage cession or catastrophe recovery, but ultimately the legal contract determines what is recoverable. Differences between modelling assumptions and treaty terms — including exclusions, reinstatements, event definitions, aggregate limits, commissions or other contractual features — can change the economic and capital outcome.

GOI 3.3 requires clarity and certainty of coverage and complete agreement on material terms; where final contracts are not yet executed, binding documentation must capture key items such as premium, risks covered, basis of reinsurance, percentage assumed, duration and exclusions. Reconcile the model to the treaty — not the reverse.

Reinsurance Replaces One Risk With Another

Reinsurance reduces insurance risk but introduces exposure to the reinsurer. An insurer therefore needs to consider not only whether the reinsurer is highly rated today, but the size and concentration of the exposure, expected future recoverables, jurisdiction, collateral or other security where relevant, and the ability of the reinsurer to meet obligations under adverse conditions.

Large reinsurance recoverables can become particularly important following the very catastrophe event that caused the insurer's own claims to increase. GOI 3.3 requires ongoing reinsurer due diligence — including beyond treaty expiry where material IBNR recoverables remain — and requires insurers to consider counterparty concentration.

Gross Reserves and Reinsurance Recoverables Need to Reconcile

Reserving does not stop at determining the gross liability. The insurer also needs an appropriate estimate of amounts expected to be recovered from reinsurers. That assessment may depend on treaty terms, attachment points, limits, claims development, large losses, catastrophe events, timing and counterparty recoverability.

Difficulties arise when gross reserve models, reinsurance calculations and finance records have developed independently and no longer reconcile cleanly. For material claims, a recovery should be supportable claim-by-claim or through an appropriate actuarial methodology rather than simply applying a historic ceded percentage where the treaty does not operate that way.

IFRS 17: Reinsurance Held Is Not Simply “Net Insurance”

Reinsurance contracts held are accounted for separately from the underlying insurance contracts they protect. As a result, the gross insurance liability and the reinsurance asset do not simply collapse into a single net reserving calculation.

Currency, Cash Flows and Discounting Can Create Hidden Inconsistencies

Reinsurance programmes frequently involve foreign reinsurers and contracts denominated in currencies different from the underlying business or the insurer's functional currency. This can create complexities around projected recoveries, discounting, exchange-rate movements and reconciliation between the underlying insurance liability, the reinsurance asset, IFRS 17 reporting and SAM valuation.

Where material foreign-currency cash flows exist, the valuation basis should reflect the characteristics of those cash flows rather than relying mechanically on assumptions developed for another currency.

Reinsurance Administration Can Become an Actuarial Risk

Even a well-designed treaty can fail to deliver its intended benefit if the underlying administration is weak. Insurers need controlled processes for identifying covered claims, monitoring aggregate exposures, calculating ceded premiums and commissions, recording recoverables, collecting amounts due and maintaining treaty information.

GOI 3.3 requires controls around contract management, IT capabilities, aggregate claims tracking, collection of reinsurance receivables and timely reporting to reinsurers. Actuarial reconciliations should trace the flow from underlying claims and premiums through the reinsurance calculation into financial and regulatory reporting.

Reinsurance Should Work Under Stress, Not Just at the Reporting Date

An insurer's current solvency ratio can make a reinsurance programme appear adequate, but the more important question may be how the programme performs under adverse conditions. ORSA and stress/scenario analysis can test whether current retentions and limits remain appropriate under catastrophe events, adverse claims development, rapid premium growth, reinsurer default or changes in available market capacity.

APN 106/403 expects the HAF's assessment of reinsurance adequacy to consider current and future solvency, catastrophe events, capacity and retention, accumulations and stress/scenario results.

The Head of Actuarial Function Perspective

The Head of Actuarial Function is expected to express an opinion on both the insurer's Reinsurance and Other Risk Transfer Policy and the adequacy of the actual reinsurance arrangements. That assessment extends to programme structure, retention and capacity, catastrophe exposure, counterparty strength, data quality, current and future solvency, alternative structures and the models used to assess the programme.

Independent actuarial analysis can help the HAF challenge the existing programme, quantify alternative structures and document the reasoning supporting the opinion.

Reinsurance Needs to Be Audit-Ready Too

At year-end, the insurer should be able to demonstrate how treaty terms flow into gross-to-net reserving, reinsurance recoverables, IFRS 17 measurement, SAM capital, counterparty exposure and regulatory reporting. Material differences between actuarial models, reinsurance administration records, finance and QRT reporting should be understood and reconciled.

Where Independent Actuarial Support Adds Value

Reinsurance Does Not Operate in Isolation

Reinsurance is closely connected to an insurer's reserving, capital and regulatory reporting processes. A change in treaty structure can affect gross-to-net reserving, reinsurance recoverables, the SAM solvency position, IFRS 17 measurement, ORSA projections and annual regulatory reporting.

For related guidance, see our articles on SAM, Capital & ORSA and Local Reserving & Actuarial Audit Readiness, as well as our guide to QRT and annual QRT reporting under SAM.

How Wizard & Co. Can Help

Wizard & Co. provides independent senior actuarial capacity across the full reinsurance lifecycle — from programme design and capital optimisation through to IFRS 17 measurement, HAF support and audit readiness. In each case our focus is the same: turning technical calculations into results that are technically appropriate, traceable, reconciled, reproducible, explainable and defensible.