Aon will raise its Client Treaty co-insurance share to 35% in 2027

Aon has renewed its Aon Client Treaty (ACT) for 2027 and will raise its co-insurance share to 35% from 28.5% in 2026, the broker announced on 4 November. The change takes effect on 1 January 2027.

ACT gives clients committed capacity on the same terms and pricing as the lead placement. The 35% share applies to eligible business placed through Aon's Global Broking Centre and to facultative reinsurance placed by Aon's Reinsurance Solutions, which the facility has supported since late 2025. QBE leads the facility, with backing from Lloyd's syndicates. Aon says ACT has placed more than $5bn of gross written premium since its launch in 2016.

Clients may also qualify for a 1.5% ACT Client Dividend, which will now apply to the larger share where local law and regulation permit. Use of the facility needs the client's agreement, and Aon says it manages these placements under its conflicts of interest framework.

Joe Peiser, chief executive of Risk Capital at Aon, said efficient access to risk capital has never been more important. Helene Madell, chief executive of the Global Broking Centre, said facultative reinsurance has become one of the facility's most important growth areas.