Re insurance and co insurance

Reinsurance and co-insurance are risk management strategies used by insurers to spread or share the risk associated with policies. While they both involve risk-sharing, they operate in different ways.



Reinsurance is a process by which an insurance company (the primary insurer or ceding company) transfers a portion of its risk to another insurance company (the reinsurer). In other words, the primary insurer buys insurance for its own portfolio of policies from another insurer.

Key Points:

1. Risk Transfer:

   – The primary purpose of reinsurance is to transfer a part of the risk assumed by the primary insurer to the reinsurer. This is done to reduce the exposure of the primary insurer to a large loss.

2. Risk Pooling:

   – Reinsurance allows for the pooling of risks on a broader scale. The reinsurer agrees to take on a share of the risks in exchange for a premium paid by the primary insurer.

3. Diversification:

   – Primary insurers often use reinsurance to diversify their risk portfolio and ensure that they are not overly exposed to specific types of risks or catastrophic events.

4. Financial Stability:

   – Reinsurance provides an additional layer of financial protection for the primary insurer, especially in the face of large and unexpected losses.

5. Types of Reinsurance:

   – Reinsurance can be treaty-based, where an agreement covers a specified type or amount of risk, or facultative, where the reinsurer reviews and accepts individual risks on a case-by-case basis.



Co-insurance involves multiple insurers participating in a single insurance policy. In co-insurance, each insurer covers a specified percentage of the risk, and they share in the premiums and losses accordingly.

Key Points:

1. Shared Liability:

– Multiple insurers share the liability for a single policy. Each insurer is responsible for a specified percentage of the coverage.

2. Premium Sharing:

   – Premiums are distributed among the participating insurers based on their agreed-upon percentage of the risk. Each insurer collects premiums and pays claims proportionally.

3. Risk Distribution:

   – Co-insurance is often used in large and complex risks where a single insurer may not be willing or able to assume the entire risk. This approach allows for risk distribution among multiple insurers.

4. Coordination:

– Coordination among co-insurers is essential for the efficient handling of claims and policy administration. Clear communication and agreements are necessary to ensure smooth operations.

5. Types of Co-insurance:

 – Co-insurance can occur in various forms, including property co-insurance, where multiple insurers cover a property, and marine co-insurance, where multiple insurers cover a marine risk.


In summary, reinsurance involves the transfer of risk from one insurer to another, while co-insurance involves multiple insurers sharing the risk on a single policy. Both strategies contribute to risk management and financial stability within the insurance industry.