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HMRC internal manual

General Insurance Manual

Reinsurance and other forms of risk transfer: types of reinsurance: non-proportional reinsurance: example of layered treaty

An example of layered treaty excess of loss reinsurance is as follows.

Layer Treaty Cover Max sum reinsured (cumulative) Amount reinsured by layer
4th layer £500,000 excess of £500,000 £1m £500,000
3rd layer £400,000 excess of £100,000 £500,000 £400,000
2nd layer £50,000 excess of £50,000 £100,000 £50,000
1st layer £50,000 excess of £10,000 £50,000 £40,000
      Deductible/excess £10,000

The overall effect is thus to insure £1m: the first loss of £50,000 is recoverable (less the £10,000 excess) from layer 1; the next £50,000 loss from layer 2 (making £100,000); the next £400,000 loss from layer 3 (making £500,000); and the final £500,000 loss from layer 4 (making £1,000,000). Under this treaty any claims in excess of £1,000,000 would not be reinsured.

In a treaty the term ‘excess of’ may be replaced by ‘less’ or shown simply as ‘xs’.