Reinsurance
Reinsurance is the practice whereby an insurance company transfers a portion of its risk portfolio to another insurer, known as the reinsurer, in order to reduce its net exposure and protect its solvency. It is often described as insurance for insurance companies.
Last reviewed: April 2026
In plain English
Reinsurance is when an insurance company buys its own insurance from another company to share the risk. This helps the original insurer handle very large claims without going bankrupt. The policyholder usually deals only with the original insurer and may not even know reinsurance exists behind the scenes.
Detailed explanation
Reinsurance is a cornerstone of the global and Indian insurance industry, enabling primary insurers to underwrite risks that would otherwise exceed their individual capacity or risk appetite. In India, the reinsurance market is governed by IRDAI regulations, which mandate that a prescribed percentage of every general insurance policy must first be offered to the General Insurance Corporation of India (GIC Re), the sole Indian reinsurer, before being placed with foreign reinsurers.
There are two primary forms of reinsurance: treaty and facultative. Treaty reinsurance involves a standing agreement where the reinsurer automatically accepts a defined share of all policies within a specified class of business. Facultative reinsurance is arranged on a case-by-case basis for individual large or unusual risks. Indian insurers typically use a combination of both to manage their portfolios.
Reinsurance can further be classified as proportional (quota share or surplus treaty), where the reinsurer shares premiums and claims in a fixed ratio, or non-proportional (excess of loss), where the reinsurer pays only when claims exceed a specified threshold. Catastrophe excess of loss treaties are especially important in India given the country's exposure to natural disasters such as cyclones, floods, and earthquakes.
The Indian reinsurance landscape has evolved significantly since IRDAI began allowing foreign reinsurers to set up branches in India from 2016 onwards. Lloyd's of London, Swiss Re, Munich Re, and several other global reinsurers now operate in India, increasing competition and capacity. This has benefited Indian commercial policyholders through broader coverage options and more competitive pricing for complex industrial risks.
Reinsurance is essential for maintaining the financial stability of the Indian insurance market, as it ensures that no single catastrophic event can threaten the solvency of a domestic insurer.
Indian example
After Cyclone Fani causes widespread damage across Odisha, a mid-sized Indian insurer faces claims totalling INR 1,200 crore. Thanks to its catastrophe excess-of-loss reinsurance treaty with GIC Re and Munich Re, the insurer's net liability is capped at INR 150 crore, with the reinsurers absorbing the remainder. This prevents the insurer from breaching IRDAI solvency margin requirements.
Frequently Asked Questions
Why does IRDAI require Indian insurers to offer reinsurance business to GIC Re first?
Can an Indian policyholder claim directly from a reinsurer?
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