Both agencies said the benefit will hinge on how the five state-owned (re)insurance groups deploy the money, with heavier equity investment raising asset risk.
The figures cover losses from typhoons Maysak and Bavi and wider July flooding, with insurers having already advanced CNY2.89bn (US$427m) to policyholders across Zhejiang, Guangxi and Hubei.
China's insurers are processing thousands of claims following Typhoon Bavi's landfalls in Zhejiang, with Ping An, PICC and China Pacific reporting early losses and payouts.