Aon has renewed its Aon Client Treaty (ACT) for 2027 and increased the share of eligible placements it will automatically co-insure to 35% from 28.5%.
The facility, led by QBE and backed by Lloyd’s syndicates, provides prearranged capacity that follows the lead insurer’s terms and pricing. From January 1, it will cover eligible business placed through Aon’s Global Broking Centre and facultative reinsurance placed by Aon Reinsurance Solutions. The 1.5% client dividend remains unchanged but will apply to the larger share where law and regulation permit.
“Increasing ACT to 35% gives clients greater efficiency and confidence when placing their risks,” said Joe Peiser, chief executive of risk capital at Aon.
Helene Madell, chief executive of Aon’s Global Broking Centre, said facultative reinsurance, added to the facility in late 2025, had quickly become one of its most important areas of growth. ACT has placed more than $5 billion in gross written premium since 2016.
Follow facilities let brokers fill a fixed share of each placement automatically, which speeds up placement and gives insurers a predictable flow of business. As specialty and large commercial pricing softens, that predictability is valuable to both sides.
The expansion also comes as US brokers face slower growth. Brown & Brown reported organic growth of 1.2% in the third quarter, citing a challenging rate environment, while Gallagher reported 5%. Tools that improve placement efficiency and client retention matter more when rate increases no longer drive revenue.
For US corporations with global programs placed through London, and for US insurers buying facultative cover on large risks such as energy, infrastructure and technology projects, the larger share means faster placement and a modest dividend.
The trade-off is concentration. With 35% of each eligible placement going to a pre-agreed panel, clients will want assurance that using the facility gives them the best overall terms, and that Aon’s conflicts of interest framework is applied rigorously. Underwriters outside the facility will compete for a smaller share of each risk, which could add to pricing pressure.
