Climate Insurance Gap May Cost $41.4 Trillion

Around 2.7 billion people were living in flood-prone areas globally as of 2020, underscoring the scale of escalating climate risk facing both developed and developing economies.

Uninsured losses from natural disasters and rising sea levels could drain as much as $41.4 trillion from the global economy over the next two decades, according to a new report by Moody’s. The figure reflects not only the growing frequency and intensity of extreme weather events but also a widening gap in global insurance coverage.

The report highlights an expanding “insurance protection gap”, defined as the difference between total economic damage caused by disasters and the amount actually compensated by insurers. Moody’s warns that this gap is now becoming a systemic risk, with the potential to destabilise long-term economic resilience.

When disasters strike and losses are not insured, the financial shock does not disappear. It is redistributed. Governments are forced to divert public funds towards recovery and reconstruction, businesses face disrupted operations and capital loss, and households often bear the heaviest burden of rebuilding without support. Over time, this weakens growth and slows development.

The disparity is particularly pronounced in developing economies. In many of these regions, insurance penetration remains low even as economic growth accelerates and cities expand. New infrastructure, rising property values and industrial assets are being created faster than insurance systems can adapt to cover them.

Regional contrasts underline the imbalance. In the Asia-Pacific region, insurance coverage averages just 0.83% of gross domestic product. By comparison, the G7 economies show significantly stronger protection levels, with insurance coverage averaging 2.38% of gross domestic product.

Population movement is further amplifying the risk. More people are settling in high-risk coastal and riverine zones, increasing exposure to flooding and storm surges. This trend adds pressure to already vulnerable systems.

Moody’s analysis estimates that by 2020, about one in every three people worldwide—roughly 2.7 billion individuals—were living in areas exposed to flooding risk. With climate patterns becoming more volatile, that number is expected to rise, placing even greater strain on insurance systems and public finances in the years ahead.