Aon has renewed the Aon Client Treaty (ACT) for 2027 and increased the share of eligible placements it supports to 35% from 28.5%.
The change expands one of the broker’s main tools for giving clients around the world faster access to capacity.
From January 1, ACT will provide 35% co-insurance on eligible business placed through Aon’s Global Broking Centre and on facultative reinsurance placed by its Reinsurance Solutions business. Where local law and regulation allow, and subject to eligibility, a 1.5% client dividend will apply to the larger share.
The facility is led by QBE and backed by Lloyd’s syndicates. Clients that use it access its capacity on the same terms and pricing as the lead placement. Use of the facility is subject to client agreement, and Aon said it manages placements under its conflicts of interest framework.
“As the risks our clients face grow more complex and interconnected, efficient access to risk capital has never been more important,” said Joe Peiser, chief executive of risk capital at Aon.
The expansion is particularly significant for facultative reinsurance, which ACT has supported since late 2025. Insurers in any market that place large or complex individual risks through Aon can now access committed capacity for a larger share of each placement, subject to eligibility.
Helene Madell, chief executive of Aon’s Global Broking Centre, said facultative reinsurance had quickly become one of the facility’s most important areas of growth.
Demand for facultative capacity has been driven by the growing size and complexity of individual risks, such as large infrastructure, energy and technology projects, which can exceed what insurers want to retain or place under their treaty programmes.
Since its launch in 2016, ACT has placed more than $5 billion of gross written premium.
Aon’s expansion reflects a broader shift in how specialty and large commercial risks are placed globally. Major brokers have built facilities that commit a fixed share of capacity across eligible placements, often backed by Lloyd’s and other specialty markets. As commercial and specialty pricing softens in many regions, these facilities give insurers a steady flow of business and give brokers more certainty in completing placements.
For insurers in Asia, the Middle East, Latin America and Europe that buy facultative reinsurance through London, the bigger ACT share means quicker placement of large and complex risks, and a small dividend on the share placed through the facility.
For corporate clients with global programmes placed through Aon’s Global Broking Centre, the facility can speed up placement and add certainty, particularly on difficult risks.
The trade-off is that more of each placement goes to a pre-agreed panel. Clients and cedents will want to be confident that using the facility delivers the best overall terms, and that the broker’s conflicts framework is applied rigorously. Underwriters outside the facility, meanwhile, will compete for a smaller share of each placement, which may add to pricing pressure in an already softening specialty market.
