Definition
Quota share reinsurance is a proportional reinsurance structure in which the reinsurer assumes a fixed percentage of every policy in a defined block of business, taking the same percentage of premium and bearing the same percentage of losses on every individual policy in that block.
Why it matters
For a contract owner, quota share reinsurance distributes the economic backing of policies in the block proportionally between the ceding carrier and the reinsurer on a policy-by-policy basis. The structure is the most common starting point for analyzing a carrier's reinsurance program because it cleanly separates the share of risk and premium that has been ceded from the share that has been retained.
How it works
Under a quota share treaty, the ceding carrier and reinsurer agree on a fixed cession percentage — for example, 50% — that applies uniformly to every policy in a defined block. The reinsurer receives the agreed share of premium and funds the corresponding share of claims and benefits, less a ceding commission paid by the reinsurer to the ceding carrier to compensate for the carrier's acquisition costs and ongoing administration. A stylized illustration: under a 50% quota share treaty on a block of single-premium immediate annuities, every dollar of premium splits with 50 cents to the reinsurer and 50 cents to the ceding carrier, and every dollar of monthly income paid to a contract owner is funded 50% by the reinsurer through the reinsurance settlement and 50% by the ceding carrier directly. Quota share is typically combined with one of the underlying full-risk-transfer mechanisms — coinsurance, modified coinsurance, or funds withheld — which governs how the assets supporting the ceded share are held.
In practice
Quota share reinsurance is disclosed in carrier statutory filings as part of the reinsurance schedule. For an individual evaluating a commercial annuity, the cession percentage and the counterparty matter because they determine how much of the carrier's reported business has been effectively shared with a reinsurer. A carrier with 50% of its annuity block under a quota share treaty with an unaffiliated, well-capitalized domestic reinsurer presents a different risk picture than the same carrier with 50% under quota share to an affiliated offshore reinsurer. For a plan fiduciary characterizing a carrier's reinsurance program, the quota share percentage is one of the first parameters to identify, alongside the supporting structure and the counterparty profile.
In the Longevity Standard Framework
Quota share reinsurance is supporting vocabulary in the Longevity Standard framework. It describes the proportional sharing structure most commonly applied to lifetime income blocks — where a fixed percentage of every contract in the block has its economic backing redistributed between the ceding carrier and the reinsurer. The realized value of any individual contract within the block is unchanged by the quota share mechanic — the contract owner's payments are governed by the original contract — but the structural backing of the asset-backed claim is distributed across two entities in the proportion specified by the treaty.
Related terms
- Reinsurance
- Coinsurance
- Modified coinsurance
- Funds withheld reinsurance
- Excess of loss reinsurance
- Asset-backed claim
- Affiliated reinsurance
- Statutory accounting principles