Reinsurance Premium Cession

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Calculate Your Reinsurance Premium Cession

No insurance company retains 100% of every risk it underwrites. The risks that are too large or too volatile are passed on to reinsurers - and the portion of premium that goes with those risks is called the reinsurance premium cession. The Reinsurance Premium Cession Tool on ToolWard helps insurers, reinsurance brokers, and actuarial teams calculate ceded premiums under different treaty structures quickly and accurately.

What Is Reinsurance Cession?

Reinsurance is insurance for insurance companies. When an insurer writes a large policy - say, a N5 billion fire cover on an industrial complex - it typically can't afford to keep the entire risk on its own books. It cedes (transfers) a portion to one or more reinsurers. The reinsurer takes on a share of the risk and, in return, receives a share of the premium.

The amount of premium ceded depends on the type of reinsurance arrangement and the proportion of risk transferred. Getting these calculations right is critical for the insurer's financial planning, regulatory reporting, and profitability analysis.

Types of Reinsurance Treaties the Tool Supports

Quota share - the simplest form. The insurer cedes a fixed percentage of every policy in the treaty class. If the quota share is 40%, then 40% of every premium (and every claim) is ceded to the reinsurer. The tool calculates ceded premium simply as gross premium multiplied by the cession percentage.

Surplus treaty - the insurer retains a fixed amount (the "line") on each risk, and cedes the surplus up to a multiple of the line. For example, if the retention line is N100 million and the treaty allows 10 lines surplus, risks up to N1.1 billion are covered. The ceded premium is proportional to the ceded sum insured relative to the total sum insured.

Excess of loss - the reinsurer pays when claims exceed a specified threshold (the "deductible" or "priority"). The premium isn't directly proportional to the sum insured; it's calculated using an agreed rate, often expressed as a percentage of the underlying gross premium or as a flat amount based on actuarial models.

Facultative cession - individual risks ceded on a case-by-case basis, outside the treaty. The tool handles these as one-off calculations with user-specified cession terms.

How to Use the Tool

Select the reinsurance type: quota share, surplus, excess of loss, or facultative. Enter the gross written premium for the business class or individual risk. Then provide the treaty-specific parameters:

For quota share: enter the cession percentage (e.g., 30%, 40%, 50%).

For surplus: enter the retention line, the number of surplus lines, and the total sum insured for the risk.

For excess of loss: enter the layer structure (deductible and cover limit) and the rate on line or rate on premium.

The Reinsurance Premium Cession Tool then calculates the ceded premium, the retained premium, and the cession ratio. For surplus treaties, it also shows the cession on a per-risk basis if you enter individual risk details.

Who Uses This Tool?

Reinsurance managers and treaty underwriters at insurance companies. During treaty renewal negotiations, quick premium cession calculations help assess the financial impact of different treaty structures and terms.

Reinsurance brokers structuring programmes for their insurer clients. A fast calculation tool during broker-reinsurer discussions speeds up the negotiation process.

Actuaries modelling reinsurance costs as part of reserving, pricing, or capital modelling exercises. While full actuarial models are more complex, this tool provides quick sanity checks.

Finance teams at insurance companies preparing quarterly and annual accounts. Ceded premiums are a major line item in the revenue account, and accuracy is essential for financial reporting and regulatory returns.

Insurance students studying for ACII, AIIN, or actuarial exams. Reinsurance cession calculations feature prominently in professional insurance examinations.

A Practical Example

A Nigerian general insurer writes marine cargo business with gross premiums of N2 billion annually. The company has a quota share treaty ceding 25% of all marine premiums to a panel of reinsurers. Using the Reinsurance Premium Cession Tool, the reinsurance manager enters N2 billion gross premium and 25% cession. The tool shows N500 million ceded premium, N1.5 billion retained premium, and a cession ratio of 25%. The manager can then model what happens if the quota share is increased to 30% or reduced to 20%, seeing the impact on both ceded premium and retained exposure.

For a surplus treaty scenario, consider a fire portfolio where the retention is N200 million per risk with 8 lines surplus (total capacity N1.8 billion). A single risk with a sum insured of N1 billion and premium of N4 million would cede 80% to the surplus treaty (N800 million of the N1 billion sum insured exceeds the N200 million retention), resulting in a ceded premium of N3.2 million.

Important Considerations

Ceding commission - in proportional treaties (quota share and surplus), the reinsurer pays a ceding commission back to the insurer to cover acquisition costs. This tool shows the gross ceded premium; the net cost to the insurer is lower after ceding commission.

Profit commission - some treaties include profit-sharing clauses where the reinsurer returns a portion of underwriting profit to the insurer. This further reduces the effective cost of reinsurance.

Mandatory local cession - in Nigeria, NAICOM may require a portion of certain reinsurance cessions to be placed with Africa Re or other designated local reinsurers before going to the international market. Factor this into your cession planning.

Tips

Model multiple scenarios before committing to a treaty structure. Small changes in retention or cession percentage can have significant impacts on retained premium and profit.

Ensure your ceded premium calculations reconcile with your reinsurers' bordereaux (premium statements). Discrepancies create friction and delay commission payments.

All calculations happen locally in your browser - no treaty details or financial data is stored or transmitted.