Monday, May 11, 2020

How Surplus Treaty Reinsurance Works

The capacity of a surplus treaty is always a multiple of the ceding company's retention. Further multiples of the retention or lines can be added beyond the 'first' surplus treaty, becoming the 'second' surplus treaty.

The mechanics of ceding a risk under a surplus treaty do not differ from those of an individual facultative proportional cession. There are, however, substantial differences in the creation of any surplus treaty.

Let us assume a four-line surplus treaty, giving the insurer an automatic underwriting capacity of USD 5,000,000 (USD 1,000,000 own gross retention plus USD 4,000,000, comprising four surplus lines each of USD 1,000,000).

The insurer has accepted five risks, all of the first-class construction. If the insurer decided to retain its maximum gross retention then the risks would be apportioned to the surplus treaty as follows:

Risk

Original sum insured
Company retains

Cedes to surplus
(iv)

in USD
in USD
in %
in USD
in %
(i)
(ii)
(iii)
(iv) = (iii)/(ii)
(v) = (ii)-(iii)
(vi) = (v)/(ii)
1
1000000
1000000
100.00%
Nil
0.00%
2
2500000
1000000
40.00%
1500000
60.00%
3
3200000
1000000
31.25%
2200000
68.75%
4
4000000
1000000
25.00%
3000000
75.00%
5
5000000
1000000
20.00%
4000000
80.00%

It is important to note that a cession does not have to be a direct multiple of the gross retention, nor does the insurance company have to retain its stated maximum on a particular risk. If this were to be the case, the surplus capacity would be commensurately reduced. Once a cession has been made, it remains at that percentage. Only rarely would reinsurers allow revised retention and cession to be made.

If a claim of USD 500,000.00 occurred, then the insurer and reinsurers would share the loss proportionate to the risk they undertook:

Claim
Original sum insured
Company retains
Cedes to surplus
Claim to surplus


in %
in USD
in %
in USD
(i)
(ii)
(iii) = 
1000000/(ii)
(iv) = 
(iii)x(i)
(v) = 
100%-(iii)
(vi) = 
(v)x(i)
500000
1000000
100.00%
500000
0.00%
0
500000
2500000
40.00%
200000
60.00%
300000
500000
3200000
31.25%
156250
68.75%
343750
500000
4000000
25.00%
125000
75.00%
375000
500000
5000000
20.00%
100000
80.00%
400000

Two important words need explanation:

A 'cession' is that amount of an original risk that is ceded to a proportional treaty. The word applies to all forms of proportional reinsurance, whether facultative or treaty.

A 'line' describes the monetary amount of the insurance company's gross retention taken on an original risk. Surplus treaties are normally a specified multiple of that gross retention, resulting in surplus capacity being described as 'x lines of y maximum gross retention.' There are also cases where surplus capacity is constructed on the insurer's net retention or gross retention after quota share cession, but we shall concentrate here on surplus capacity geared to gross retention.

One the terms and conditions of a surplus treaty have been finalised, then the insurer is obliged to cede all risks greater than its chosen retention and falling within the scope of the treaty agreement and the reinsurer is obliged to accept all such cessions.

Both contracting parties, the insurer and reinsurer, therefore have identified obligations under the treaty and they are automatically bound in advance to transact business in the manner specified, with no freedom of choice available to either party.

Whereas an individual facultative cession has to be specifically agreed between the parties, a cession to a proportional treaty is of immediate effect.

Source:
John Pyall. 1999. Reinsurance. The Chartered Insurance Institute.

Surplus Treaty
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