Reinsurance
The transfer itself
Insurance bought by an insurer to transfer part of the risk it has already accepted.
Open the interactive version → definition, quiz, structure diagram and progress tracking
Definition
- Buys four things: capacity to write larger risks, stability of annual results, catastrophe protection, and regulatory capital relief.
- There is no privity of contract between the policyholder and the reinsurer — the insured cannot sue the reinsurer directly (absent a cut-through clause).
- It is a transfer of risk, not of responsibility. Reinsurer default (credit risk) lands back on the cedent.
Worked example
Scenario · figures in USD
Why a coastal insurer survives a hurricane
Gulf Coast Mutual writes $100M of premium and holds $150M of capital. Its modelled 1-in-100-year hurricane loss is $400M — more than twice its capital. It buys a single catastrophe cover of $350M in excess of $50M and a hurricane duly arrives.| Capital (policyholder surplus) | $150M |
| Gross loss from the hurricane | $400M |
| Retention (cedent pays first) | $50M |
| Recovery from reinsurers | $350M |
| Net loss to Gulf Coast Mutual | $50M |
| Capital remaining after the event | $100M |
Check your understanding
A homeowner's claim is unpaid because the insurer is in liquidation. Can the homeowner claim directly from the reinsurer?
No, unless the treaty contains a cut-through clause. Reinsurance is a separate contract between two carriers. The policyholder has no privity with the reinsurer unless a cut-through (or insolvency) clause is expressly written in.
Which of these is NOT a normal reason to buy reinsurance?
Eliminate the cedent's liability to the policyholder. Liability to the policyholder can never be transferred by reinsurance. The cedent pays the claim first and recovers afterwards.
Word problem
Harbour General suffers a gross loss of $250M from a single event. Its retention is $60M and it holds one catastrophe layer of $150M in excess of $60M. How much does Harbour General end up paying net, and why is it more than its retention?
Show a hint
Reveal the worked answer
- Retention absorbed by the cedent: $60M
- Layer covers losses from $60M up to $60M + $150M = $210M
- Reinsurance recovery = $210M − $60M = $150M (the full limit)
- Loss above the top of the cover = $250M − $210M = $40M, which falls back on the cedent
- Net loss = $60M + $40M = $100M