What is reinsurance in insurance? Definition, Importance, and Functioning

In summary

What is Reinsurance?

Reinsurance is a crucial practice in the insurance sector, where an insurance company (often called the ceding insurer) transfers part of the risks it has accepted to another company, the reinsurer. This operation allows the insurer not to bear all risks associated with its policies alone. By ceding these risks, the reinsurer assumes responsibility for covering a portion of claims in exchange for receiving part of the premiums collected by the initial insurer.

Function of Reinsurance:

By becoming the insurer for insurers, the reinsurer plays a fundamental role in stabilizing the insurance market. It enables insurers to maintain solvency and continue offering coverage even in the case of major or cumulative claims that could otherwise threaten their financial stability. Distributing risks across multiple financial entities helps limit overall financial exposure and increases the market’s capacity to absorb significant losses.

Types of Risks Covered:

Reinsurance can cover a variety of risks, from natural disasters such as hurricanes and earthquakes to other types of claims like car accidents or machinery breakdowns. By taking on these risks, reinsurers allow insurers to expand their service offerings without compromising their surplus capital.

Risk Transfer Mechanisms:

There are two main types of reinsurance: proportional and non-proportional. In the proportional model, the reinsurer receives a fixed share of premiums and covers a matching share of claims. In the non-proportional model, also called excess of loss reinsurance, the reinsurer only intervenes when losses exceed a predefined threshold, thus protecting the insurer against exceptionally high losses.

Strategic Advantages:

Besides managing financial risk, reinsurance allows insurers to meet regulatory capital requirements and increase underwriting capacity without significantly increasing their capital. This makes insurers more competitive and capable of responding to market demand for larger or more complex risks.

Why Do Insurers Use Reinsurance?

Insurers turn to reinsurance for several strategic reasons, all aiming to improve their financial robustness, expand their market, and optimize risk management.

Risk Transfer :

One of the main benefits of reinsurance is its ability to enable insurers to transfer part of the risks they carry. This reduces their direct responsibility in case of a claim, especially important for large or catastrophic risks. Sharing these risks with a reinsurer allows insurance companies to continue offering coverages for potentially devastating claims without risking their financial health.

Increased Underwriting Capacity :

Thanks to reinsurance, insurers can underwrite higher and more diversified risk policies than their capital alone would permit. This increased capacity allows insurers to meet a broader range of needs among consumers and businesses, thereby boosting their competitiveness and market share.

Financial Flow Stabilization :

Reinsurance also helps stabilize insurers’ financial flows. By spreading risks, insurers can avoid severe cash flow fluctuations resulting from large unforeseen claims. This helps maintain predictable and stable cash flows, crucial for long-term planning and operational stability.

Advances on Claims :

Reinsurers often provide advances on claims to insurers. This means that the insurer can receive funds from the reinsurer shortly after a major claim occurs, even before all claims are finalized and paid. This advance helps the insurer manage claim payments more efficiently and maintain good client relationships without liquidity constraints.

Solvency Improvement :

Finally, reinsurance is a way for insurers to meet regulatory solvency requirements. Regulators require insurers to maintain a certain level of capital to cover their commitments to policyholders. With reinsurance, insurers can expand capacity without proportionally increasing their capital needs, helping maintain or improve their solvency ratio.

Different Types of Reinsurance

Reinsurance plays a vital role in insurance risk management, offering insurers flexible and tailored ways to allocate their risk burdens. It divides into two main categories: facultative reinsurance and obligatory (or treaty) reinsurance. Each responds to specific needs and features distinct characteristics.

Facultative Reinsurance

Facultative reinsurance offers maximum flexibility for both insurer and reinsurer. In this model, each risk is presented individually to the reinsurer, who then chooses whether to accept or decline coverage. This method allows detailed, risk-specific evaluation, making the underwriting process highly targeted.

Advantages :

• Selectivity : The reinsurer can choose risks they are willing to cover, managing their exposure effectively.
• Flexibility : The insurer can find coverage for specific risks that may not fit a broader reinsurance treaty.
• Direct Negotiation : Terms are negotiated for each contract, enabling potentially better conditions based on risk quality.

Obligatory (Treaty) Reinsurance

Obligatory reinsurance, also called treaty reinsurance, involves a contractual agreement where the insurer commits to ceding, and the reinsurer agrees to accept, all risks within a certain category. This type of reinsurance is structured around treaties covering entire risk portfolios rather than individual risks.

Advantages :

• Administrative simplicity : Managing a reinsurance treaty is generally less complex than negotiating individual coverages for each risk.
• Stability : Treaties provide ongoing protection over a long period, helping to stabilize the insurer’s financial results.
• Automatic coverage : All risks within the agreed category are automatically covered, ensuring the insurer is never without protection.

Choosing Between Types of Reinsurance

The decision between facultative and obligatory reinsurance depends on several factors, such as the nature of insured risks, the risk management strategy of the insurer, regulatory requirements, and portfolio management preferences. Large insurers may use a mix of both to optimize coverage, while those with very specific needs may prefer the flexibility of facultative reinsurance.

Forms of Reinsurance

Reinsurance is divided into two main categories based on how risks are shared between the insurer and reinsurer: proportional and non-proportional reinsurance. Each form addresses different risk management needs.

Proportional Reinsurance

Proportional reinsurance is characterized by a predetermined sharing of premiums and claims between the insurer and reinsurer.

Quota Share

In quota share reinsurance, the reinsurer takes a fixed percentage of premiums and claims. This type of treaty promotes a symbiotic relationship, where profits and losses are shared proportionally. It is particularly useful for new markets or heavy-risk coverage like natural disasters, where capital needs are significant.

Surplus of Capital

The surplus of capital or full surplus model sets a threshold (or full amount) beyond which the reinsurer begins to cover claims. This system allows the insurer to limit its financial commitment on very high risks, transferring the excess to the reinsurer. It is especially suitable for policies with high coverage amounts.

Non-Proportional Reinsurance

Non-proportional reinsurance offers protection against exceptionally high claims by intervening only when claims exceed a certain threshold.

Excess of Loss

In excess of loss (Excess-Loss) reinsurance, the reinsurer commits to covering losses only if they exceed a predefined threshold, called the priority or deductible. This type is essential for risks with significant financial impacts, such as unlimited liability or large industrial risks.

Stop-Loss Excess

The stop-loss excess (Stop-Loss) is designed to protect insurers against a buildup of losses over a period. The reinsurer only intervenes if the loss ratio (claims to premiums, S/P) exceeds a certain percentage, safeguarding against catastrophic annual losses. This form is often used for cyclical or seasonal risks like weather-related events.

Difference between Reinsurance and Coinsurance

Although the terms reinsurance and coinsurance may seem similar, they refer to two distinct risk-sharing mechanisms in insurance, each with its own characteristics and specific functions.

Coinsurance

Coinsurance involves a horizontal sharing of risk among several insurers. Each participant directly shares the risk and has a contractual link to the client. This method is often used for large projects or high-value properties where the risk is too great for a single insurer.

Characteristics of Coinsurance:

• Direct sharing : Insurers share premiums and claims according to their participation share in the risk.
• Client relationship : Each co-insurer has a contractual link to the client and is generally listed in the policy.
• Proportional liability : Each insurer is responsible for a part of the risk, reducing the financial burden in case of a claim.

Reinsurance

Reinsurance, on the other hand, is a vertical risk sharing. In this case, the primary insurer (cedent) transfers part of the risks it underwrites to one or more reinsurers. This operation aims to limit the primary insurer’s financial exposure, stabilize results, and expand underwriting capacity.

Characteristics of Reinsurance:

• Vertical risk transfer : The insurer cedes part of the risk to a reinsurer, which may further cede parts of this risk (retrocession).
• No direct relationship with the client : The final client does not have a contractual relationship with the reinsurer and may not even be aware of the reinsurance arrangement.
• Flexibility and specialization : Reinsurance allows insurers to manage specific risks and adapt to various needs without proportionally increasing capital.