Demystifying the Quota Share Treaty: Meaning, Mechanics, and Illustrations

Explore what a quota share treaty is, how it functions, and find illustrative examples to understand its application in reinsurance.


A quota share treaty is a type of reinsurance arrangement where the ceding insurance company transfers a specified percentage of each policy it underwrites to the reinsurer. This percentage, also known as the quota share percentage, is predetermined in the reinsurance agreement. Let's demystify the quota share treaty by explaining its meaning, mechanics, and providing some illustrations:

1. Meaning:A quota share treaty, often referred to as a quota share reinsurance or simply a quota share, is a reinsurance agreement where the ceding insurance company agrees to cede a fixed percentage of its risk and premiums from each policy it writes to the reinsurer. This type of reinsurance helps the ceding company reduce its risk exposure and manage its capacity by spreading the risk across the reinsurer.

2. Mechanics:The mechanics of a quota share treaty involve several key elements:

  • Quota Share Percentage: The agreement specifies the percentage of each policy that the ceding insurer will transfer to the reinsurer. For example, if the quota share percentage is 20%, the reinsurer will assume 20% of the risk and premiums for each policy.

  • Coverage Types: Quota shares can be applied to specific lines of business or to the entire book of business. For example, an insurer might have a separate quota share for property, liability, and other types of insurance.

  • Premium and Claims Sharing: The premiums and claims associated with the ceded portion are shared according to the specified percentage. If a policy generates $1,000 in premium, and the quota share percentage is 30%, the reinsurer would receive $300 in premium income. In the event of a claim, the reinsurer would pay 30% of the claim amount.

  • Consistency: Quota share treaties are typically ongoing, long-term agreements with a consistent percentage applied to all eligible policies under the treaty.

3. Illustrations:Here are some illustrations of how a quota share treaty works:

  • Insurance Company A: Insurance Company A writes a policy with a premium of $2,000 and a quota share percentage of 25%. Under the quota share treaty, they cede 25% of the policy to Reinsurer B.

  • Premium Sharing: Insurance Company A retains 75% of the premium ($1,500), while Reinsurer B receives 25% of the premium ($500).

  • Claims Sharing: If a covered loss occurs, Insurance Company A pays 75% of the claim, and Reinsurer B pays 25% of the claim amount.

  • Risk Reduction: Insurance Company A reduces its exposure to any single policy by spreading the risk with Reinsurer B, helping it manage its capacity and financial stability.

  • Profit and Loss Sharing: Under a quota share, both the insurer and reinsurer share in the profits and losses in proportion to the quota share percentage. If claims are lower than expected, both parties benefit. If claims are higher, both parties share the burden.

  • Consistency: Quota share treaties provide consistency in terms of the percentage ceded and are often used for a stable, long-term reinsurance relationship.

Quota share treaties are a fundamental component of the reinsurance industry, helping insurers manage risk, maintain financial stability, and access additional capacity to underwrite more policies. They are particularly suitable for insurers who want to reduce their exposure to large individual risks and achieve a consistent level of risk distribution.

Quota Share Treaty: Definition, How It Works, Examples.

A quota share treaty is a type of proportional reinsurance contract in which the insurer (ceding company) and the reinsurer agree to share premiums and losses according to a fixed percentage. This means that the reinsurer assumes a proportionate share of the risk associated with the insurer's policies, effectively spreading the risk and stabilizing the insurer's underwriting results.

How Quota Share Treaty Works:

  1. Establishing the Quota Share Percentage: The insurer and reinsurer agree on a fixed percentage, typically ranging from 20% to 90%, representing the reinsurer's share of the premiums and losses.

  2. Ceding Premiums and Risks: The insurer cedes a portion of the premiums and risks associated with its policies to the reinsurer based on the agreed-upon quota share percentage.

  3. Reinsurer's Participation: The reinsurer receives its share of the premiums and is obligated to pay its share of the losses for the reinsured policies.

  4. Claims Handling: The insurer typically handles claims administration for reinsured policies, but the reinsurer is involved in the process and ultimately responsible for its share of the claims payments.

Benefits of Quota Share Treaty:

  1. Risk Diversification: The insurer can diversify its risk portfolio by transferring a portion of its underwriting risk to the reinsurer.

  2. Capital Relief: The insurer can free up capital by ceding a portion of its liabilities to the reinsurer, allowing for increased underwriting capacity.

  3. Stabilized Underwriting Results: The insurer's underwriting results become more predictable and less volatile due to the shared risk with the reinsurer.

Examples of Quota Share Treaty:

  1. Property Insurance: An insurer cedes 50% of its property insurance portfolio to a reinsurer under a quota share treaty. The reinsurer receives 50% of the premiums and is responsible for 50% of the losses from covered property claims.

  2. Casualty Insurance: An insurer cedes 30% of its casualty insurance portfolio to a reinsurer under a quota share treaty. The reinsurer receives 30% of the premiums and is responsible for 30% of the losses from covered casualty claims.

  3. Health Insurance: An insurer cedes 40% of its health insurance portfolio to a reinsurer under a quota share treaty. The reinsurer receives 40% of the premiums and is responsible for 40% of the losses from covered health claims.

Quota share treaties are a common and effective form of reinsurance, particularly for insurers seeking to manage their risk exposure, stabilize underwriting results, and expand their underwriting capacity. By sharing premiums and losses with a reinsurer, insurers can achieve greater financial stability and enhance their ability to provide insurance coverage to their policyholders.