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🔁 '''Reinsurance cycle''' describes the recurring pattern of alternating "hard" and "soft" market conditions in the [[Definition:Reinsurance market | reinsurance market]], driven by the interplay of [[Definition:Reinsurance capacity | capacity]], [[Definition:Reinsurance rate | pricing]], [[Definition:Underwriting | underwriting]] discipline, and [[Definition:Loss experience | loss experience]]. During a soft market phase, abundant capital and intense competition among [[Definition:Reinsurer | reinsurers]] push [[Definition:Reinsurance cost | reinsurance costs]] down and [[Definition:Terms and conditions | terms and conditions]] in favor of [[Definition:Ceding company | cedents]]. A hard market emerges when capacity contracts — often triggered by large [[Definition:Catastrophe loss | catastrophe losses]], reserve deterioration, or declining [[Definition:Investment income | investment returns]] — and reinsurers respond by raising rates, tightening coverage, and being more selective about the business they accept.

📈 The mechanics behind the cycle are rooted in the economics of [[Definition:Capital | capital]] deployment. In soft phases, reinsurers competing for market share may under-price risk, which initially appears sustainable as long as losses remain benign. Over time, however, the accumulated effect of inadequate pricing manifests in deteriorating [[Definition:Loss ratio (L/R) | loss ratios]] and shrinking [[Definition:Surplus | surplus]]. A significant loss event — or simply the gradual realization that reserves are deficient — then triggers a correction. Reinsurers withdraw capacity, [[Definition:Primary insurer | primary insurers]] face higher costs and may need to increase [[Definition:Retention | retentions]], and new capital sources such as [[Definition:Insurance-linked securities (ILS) | ILS funds]] and [[Definition:Catastrophe bond | catastrophe bonds]] may enter to fill gaps, sometimes moderating the severity of the hard turn. The length and amplitude of each phase vary, but the cyclical pattern has been a defining feature of reinsurance economics for decades.

🌍 For participants across the insurance value chain, anticipating where the market sits in the cycle is fundamental to strategic planning. [[Definition:Primary insurer | Primary insurers]] that lock in multi-year reinsurance programs during soft markets can protect their cost structures, while those caught unprepared by a hardening market may face sudden margin compression. [[Definition:Managing general agent (MGA) | MGAs]] and [[Definition:Insurtech | insurtech]] companies that depend on reinsurer-backed [[Definition:Program business | programs]] are especially vulnerable to cyclical shifts, since their capacity partners may decline to renew on acceptable terms when the market turns. Rating agencies and regulators also monitor cycle dynamics closely: prolonged soft markets raise concerns about industry-wide reserve adequacy, while sharp hard-market swings can strain policyholder access to affordable [[Definition:Coverage | coverage]].

'''Related concepts'''
{{Div col|colwidth=20em}}
* [[Definition:Reinsurance capacity]]
* [[Definition:Reinsurance rate]]
* [[Definition:Insurance pricing cycle]]
* [[Definition:Catastrophe loss]]
* [[Definition:Insurance-linked securities (ILS)]]
* [[Definition:Reinsurance market]]
{{Div col end}}

Definition:Reinsurance cycle - Revision history

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