Definition:Reversionary bonus
🎁 Reversionary bonus is a form of annual bonus declared by a life insurer on a with-profits policy, which, once added to the policy's guaranteed sum assured, becomes a permanent, irrevocable entitlement of the policyholder. This mechanism is central to the with-profits tradition that originated in the United Kingdom and has been adopted in various forms across markets including Australia, India, Singapore, Hong Kong, and parts of Africa. Unlike a terminal bonus, which is discretionary and paid only at maturity or claim, a reversionary bonus vests immediately upon declaration and cannot be taken away — even if the fund's investment performance deteriorates in subsequent years.
⚙️ Each year, the insurer's with-profits committee or appointed actuary evaluates the performance of the with-profits fund and determines what level of reversionary bonus, if any, to declare. The bonus is typically expressed as a percentage of the sum assured (a "simple" reversionary bonus) or as a percentage of both the sum assured and previously accumulated bonuses (a "compound" or "super-compound" reversionary bonus). The compound approach accelerates growth over time but commits the insurer to larger guaranteed liabilities, which is why many firms have shifted toward lower compound rates or reverted to simple structures in recent decades. Once declared, the bonus increases the insurer's guaranteed technical provisions, meaning it must be supported by assets and capital under the applicable prudential regime — whether Solvency II in Europe, IRDAI regulations in India, or other local frameworks.
📊 The reversionary bonus mechanism was designed to give policyholders a smooth, progressive share of investment returns while protecting them from the full volatility of financial markets. For insurers, however, the irrevocable nature of these bonuses creates a ratchet effect on liabilities — each declaration permanently raises the floor of guaranteed payouts. This tension between policyholder expectation of meaningful annual bonuses and the insurer's need to manage asset-liability risk has been a defining challenge of with-profits management, particularly during prolonged low-interest-rate environments. The decline of reversionary bonus rates over the past two decades in the UK and other mature markets reflects both lower investment returns and a more conservative approach to reserving. Nonetheless, with-profits business supported by reversionary bonuses remains a significant legacy book for many insurers, and the actuarial management of these guaranteed obligations continues to demand considerable expertise.
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