Designing Sustainable Reinsurance Programmes in Volatile Markets

Good reinsurance programme design is rarely tested when conditions are benign. It is tested when currencies move, claims costs drift upwards and capacity changes its mind. For cedants across Africa, all three tend to happen in the same year. A programme that looks efficient at the January renewal can look fragile by the third quarter if it was built around today's price rather than tomorrow's volatility.

At Reinsurance Solutions we see the market from both sides of the table, and we have come to treat sustainability as the main test of reinsurance programme design. A sustainable programme protects the balance sheet through a bad year, keeps its reinsurers committed through a good one, and costs a sensible amount of capital in between. This article sets out how we approach that, using the current market evidence rather than hopeful assumptions.

What the current market is telling cedants

The headline is softer pricing. Howden Re reported that global property catastrophe rates-on-line fell 14.7% at the 1 January 2026 renewals, the largest year-on-year reduction since 2014, according to Artemis. Guy Carpenter's global property catastrophe rate-on-line index was down 16% by mid-year, and Aon reported double-digit reductions at the June and July renewals, as summarised by Insurance Journal. Aon also put global reinsurance capital at a record USD 790 billion at 31 March 2026, driven largely by alternative capital.

Cheaper cover is welcome, but it is not a reason to relax. Fitch expects pricing to soften further at the 2027 renewals, while noting that attachment points and retentions have mostly held steady. Swiss Re Institute's latest sigma report forecasts global inflation averaging 4.0% in 2026 and warns that rising claims inflation could limit pricing corrections. In other words, the cost of cover is falling at the same time as the cost of claims is rising. That gap is exactly where under-designed programmes get hurt.

Softening cycles also reverse. Swiss Re Institute expects non-life return on equity to fall from 14% in 2025 to 7.7% by 2028. Reinsurers that earn less will price and behave differently, and cedants who treated a soft market as permanent will find the adjustment uncomfortable. Our advice is to use favourable terms to strengthen the structure, not simply to bank the saving.

Reinsurance programme design starts with retentions your capital can carry

Retention is the single most important decision in reinsurance programme design, because it determines how much volatility stays on your own balance sheet. The right level is not the cheapest one. It is the level at which a bad year hurts earnings but does not threaten solvency, regulatory capital or your ability to keep underwriting.

We begin with the cedant's risk appetite expressed in plain financial terms: the largest single loss and the worst annual aggregate outcome the company can absorb without a capital call, a rating action or a breach of its regulatory minimum. Retentions are then set so that expected retained losses sit comfortably inside that tolerance, with a margin for the years that behave worse than the model suggests. In markets where capital cannot be moved freely across borders, that margin should be generous.

The temptation in a soft market is to lower retentions because buy-downs look cheap. Aon observed at mid-year 2026 that insurers generally kept their core retentions while selectively exploring buy-down structures and frequency covers. We think that is the right instinct. Hold a retention you understand and can fund, and spend any saving on the layers where volatility actually threatens your capital efficiency. Gallagher Re noted that reinsurers have rewarded cedents who hold the line on deductibles and structural integrity, which is a useful reminder that discipline is also a commercial asset.

Balancing proportional and non-proportional protection

A resilient treaty programme rarely relies on one instrument. Proportional treaties, such as quota share and surplus, transfer a fixed share of premium and loss, provide capital relief for growing portfolios and give reinsurers a direct stake in underwriting quality. Non-proportional covers, in particular excess of loss, protect against severity and shock at a lower cost in ceded premium, but leave the cedant with more of the attritional experience.

The right mix depends on the stage of the portfolio. A younger or fast-growing book often benefits from a larger proportional component because it supports solvency and passes on a share of uncertainty about the loss ratio. A mature, well-priced book with strong data can usually retain more of the frequency and buy excess of loss to protect against the tail. Many of our clients move along this spectrum over time, and a sustainable programme is designed so that the move can be made gradually, without a disruptive restructure.

It also helps to be realistic about how reinsurers are rewarded. Proportional capacity is generally valued by reinsurers who want steady, diversified income, while excess of loss capacity responds sharply to loss experience and modelled catastrophe exposure. Knowing which reinsurers prefer which layer lets us build a panel whose appetite matches the structure, rather than asking each market to stretch beyond what it wants to write.

Aggregate cover, reinstatements and the structures that smooth volatility

The losses that damage cedants are often not single large events but the accumulation of many mid-sized ones. Frequency is where the cheapest excess of loss programmes tend to leave a gap. An annual aggregate deductible, an aggregate excess of loss or a stop-loss cover can protect earnings against a run of losses that individually sit below the main retention but collectively erode the year.

Market conditions currently favour this kind of design. Aon reported that terms and conditions improved at mid-year 2026, with reinsurers more open to flexible structures including aggregate covers and earnings protection, and Fitch expects terms and conditions to offer cedants growing flexibility at the 2027 renewals. We encourage clients to ask for these structures while they are available, because the willingness to provide them can shrink quickly after a heavy loss year.

Reinstatements deserve the same attention. The number of reinstatements, and whether they are paid or free, decides how much protection remains after the first loss and what the second event costs. A programme with limited reinstatements may look efficient on paper yet leave the cedant exposed to a second event in the same year. We model the cost of reinstatement premium alongside the layer price so that the true cost of cover is visible before the decision is made.

Currency, payment terms and long-term reinsurer partnerships

Currency risk is an underwriting issue, not only a treasury one. Africa Re's first half 2026 results illustrate the point: the reinsurer reported a net result of USD 96.7 million, down 6.1%, and attributed the decline entirely to a USD 19.6 million net foreign exchange loss caused by depreciation across several operating markets, while its combined ratio was a healthy 84.7%. Strong underwriting can still be overwhelmed by currency movements when premiums, claims and reserves sit in different denominations.

For a cedant, this means designing the currency of the programme deliberately. Where claims are paid in local currency but reinsurance recoveries are denominated in dollars, a depreciation raises the local cost of premium while leaving the recovery intact, and exchange controls can slow remittances in both directions. We recommend agreeing the currency of the contract, the basis of conversion, settlement timelines and treatment of delayed remittances in the wording at inception, not after a loss. Clear payment terms and well-drafted cash call provisions are also a quiet source of reinsurer goodwill.

That goodwill matters, because the panel is part of the design. AM Best affirmed ZEP-RE's B++ (Good) financial strength rating with a stable outlook in November 2025 and cited its USD reporting currency as a factor limiting the effect of inflation, which shows how closely security and currency are linked. We favour a stable, well-rated panel with a clear lead reinsurer and, where possible, multi-year arrangements with agreed principles on pricing and loss experience. Reinsurers that know a cedant will be there after a loss year are far more likely to stay committed when the cedant needs them most.

Testing the structure and looking beyond traditional capacity

No structure should be bought on instinct. Stochastic modelling and dynamic financial analysis allow a cedant to test candidate programmes against thousands of simulated years, measuring the effect on earnings volatility, solvency ratios and the cost of capital. The useful question is not which programme is cheapest but which one delivers the most stable outcome per dollar of ceded premium across a range of scenarios, including inflation, currency shocks and a sharp reversal of the cycle.

Alternative capital and parametric cover can complement a traditional treaty programme. Guy Carpenter noted at mid-year 2026 that many cedants are exploring parametric solutions and sidecars alongside conventional placements. For African risks exposed to drought, flood or windstorm, a parametric trigger can pay quickly and without a lengthy claims process, which helps liquidity when it is needed most. It will not replace indemnity cover, because basis risk is real, but it can sit alongside it as a fast, targeted layer.

Practical takeaways for your next renewal

Sustainable reinsurance programme design is a set of disciplined decisions rather than a single clever structure. Before your next renewal, we suggest the following:

• Set retentions from your own capital tolerance, and resist lowering them simply because buy-downs are cheap.
• Combine proportional and excess of loss cover in a mix that fits the maturity of your portfolio.
• Use the soft market to secure aggregate or stop-loss protection and sensible reinstatement terms.
• Agree currency, settlement and remittance terms in the contract wording, before any loss occurs.
• Build a stable, well-rated panel and discuss multi-year principles with your lead reinsurers.
• Test every structure with modelling or DFA, and consider parametric cover as a complement.

Our team across Mauritius, South Africa, Kenya, Zambia, Rwanda, Cote d'Ivoire and London works with cedants to build programmes that hold up in all of these conditions. If you would like to review your structure ahead of the next renewal, we would be glad to talk.