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🎁 '''No-claim bonus (NCB)''' is a discount applied to an [[Definition:Insurance premium | insurance premium]] to reward a [[Definition:Policyholder | policyholder]] for not filing any [[Definition:Insurance claim | claims]] during a preceding policy period. Most commonly associated with [[Definition:Motor insurance | motor insurance]], the NCB is a core feature of personal lines pricing in markets across Asia, Europe, the Middle East, and beyond, functioning as both a financial incentive for careful behavior and a proxy for individual risk quality. In the UK and several Commonwealth markets the term "no-claims discount" (NCD) is more common, while in India the [[Definition:Insurance Regulatory and Development Authority of India (IRDAI) | IRDAI]] prescribes specific NCB percentage scales that [[Definition:Insurance carrier | insurers]] must follow.

⚙️ The bonus typically accumulates on a graduated scale — for example, 20% after one claim-free year, rising to 50% or more after five consecutive years without a claim. Each claim-free renewal moves the policyholder up a tier, while filing a claim generally resets the bonus partially or entirely, depending on the policy terms and market convention. Some insurers offer "NCB protection" as an add-on, allowing the policyholder to make a limited number of claims without losing the accumulated discount, effectively decoupling the bonus from strict claims-free status. When a policyholder switches insurers, the accumulated NCB is usually transferable, supported by documentation from the prior carrier — a mechanism that prevents [[Definition:Customer retention | customer lock-in]] and promotes competition. In certain markets, regulators mandate the portability and standardization of NCB entitlements to ensure transparency.

📈 Beyond its role as a customer benefit, the NCB serves an important [[Definition:Underwriting | underwriting]] function. It acts as a behavioural pricing signal: policyholders who stand to lose a substantial multi-year discount think twice before filing marginal claims, which reduces [[Definition:Claims frequency | claims frequency]] and the administrative cost of processing small losses. This self-selection effect means that policyholders at the highest NCB tiers tend, on average, to represent better risks — a dynamic that reinforces the actuarial rationale for the discount. From a competitive standpoint, insurers use the structure and generosity of their NCB scales as a differentiator, particularly in highly commoditized motor markets. For [[Definition:Insurtech | insurtechs]] and digital-first motor platforms, the NCB framework presents both a constraint — since legacy bonus structures must be honored — and an opportunity to layer more granular, data-driven pricing (such as [[Definition:Usage-based insurance (UBI) | usage-based]] or [[Definition:Telematics | telematics]]-informed adjustments) on top of the traditional discount ladder.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Motor insurance]]
* [[Definition:Claims frequency]]
* [[Definition:Premium discount]]
* [[Definition:Usage-based insurance (UBI)]]
* [[Definition:Bonus-malus system]]
* [[Definition:Policyholder retention]]
{{Div col end}}

Definition:No-claim bonus (NCB) - Revision history

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