Sliding scale commission

Textbook case: on 41 million euros of ceded premium, a sliding scale commission of 20 to 35% drops to its floor when the loss ratio reaches 74%. The cedant then repays 7 points of its 27% provisional commission, or 2.87 million. The commission paid to the cedant depends on the loss ratio actually recorded: the better the treaty performs, the higher the commission, and conversely. A minimum and a maximum bound the scale, with a balance point around the expected loss ratio. It is settled by successive adjustments as losses develop. The mechanism aligns interests on a proportional treaty. A flat commission pays the cedant the same rate whether it underwrites well or badly, and the reinsurer alone absorbs any drift. A sliding scale ties remuneration to result, so the cedant carries part of the consequence of its own underwriting. The treaty does not turn into pure retention, since the bounds cap the movement. It is the most common structure on quota shares of volatile lines, and the most debated parameter at renewal. A steep slope hands the cedant much of the result; a shallow one leaves the reinsurer most of the technical risk.