A No-Claim Bonus (NCB) in health insurance is a reward mechanism that increases your coverage — or reduces your premium — every year you do not make a claim. It is one of the most underutilised features in Indian health policies, often because policyholders do not realise how much it can grow their effective sum insured over time, or what triggers its loss. This article explains the mechanics, the limits, the NCB Protect add-on, and what to consider when deciding whether to make a small claim.
Key Takeaways
- NCB adds 10–50% to your base sum insured for each claim-free year, depending on the insurer.
- NCB is cumulative — it stacks year after year up to a cap (commonly 50–100% of the base sum insured).
- A single claim resets or reduces NCB — how much depends on the policy and whether you hold an NCB Protect rider.
- NCB Protect allows a specified number of claims in a policy year without losing the accumulated bonus.
- Two types of NCB exist: cumulative bonus (higher cover, same premium) and discount NCB (same cover, lower premium).
How the Cumulative Bonus Mechanism Works
Most Indian health insurers offer NCB as a cumulative bonus: the sum insured increases by a fixed percentage each claim-free policy year, while the premium stays constant (or increases only by the standard renewal loading, not as a penalty for no claims).
For example: You buy a ₹5 lakh policy. Your insurer offers 10% NCB per claim-free year, capped at 50%.
| Policy Year | Effective Sum Insured | NCB Added |
|---|---|---|
| Year 1 (base) | ₹5,00,000 | — |
| Year 2 (no claim) | ₹5,50,000 | ₹50,000 |
| Year 3 (no claim) | ₹6,00,000 | ₹50,000 |
| Year 4 (no claim) | ₹6,50,000 | ₹50,000 |
| Year 5 (no claim) | ₹7,00,000 | ₹50,000 |
| Year 6 (cap reached) | ₹7,50,000 | ₹50,000 (max) |
After Year 6, the sum insured is capped at ₹7.5 lakh regardless of further claim-free years, unless you opt for a formal sum insured enhancement at renewal.
What Happens to NCB After a Claim
The standard NCB clause reduces the accumulated bonus proportionally after a claim. Common structures:
- Full reset: The NCB reverts to zero on any claim, regardless of claim amount. Less common in newer policies.
- Step-down: NCB reduces by one increment (say 10%) per claim year. At ₹7.5 lakh effective cover with 50% NCB accumulated, one claim might bring it back to 40%, meaning ₹7 lakh cover next year.
- Partial retention: Some policies protect the first claim within a threshold (e.g., claims below ₹25,000) and do not reset NCB.
The exact rule is in your policy's NCB clause. Read it before making a small claim — sometimes it is cheaper to pay a ₹8,000 bill out of pocket than to lose ₹50,000 of accumulated cover.
NCB Protect: How the Add-On Works
NCB Protect (or NCB Guard, as some insurers label it) is a paid rider that shields your accumulated bonus from the impact of a claim. Broadly, it allows:
- One or two claims in a policy year without any reduction in NCB.
- Or claims below a specified amount without NCB impact.
The premium for this add-on is modest — typically ₹300–₹800 per year for an individual plan — and can be worth it once you have built up 30–50% NCB. Without the add-on, a single hospitalisation can erase three to five years of accumulated cover.
NCB Protect does not change what the policy covers or pays — it only affects whether a claim triggers the NCB reset clause.
Discount NCB vs Cumulative NCB
A small number of policies offer NCB as a premium discount rather than a cover increase:
| Type | What Changes | Premium | Cover |
|---|---|---|---|
| Cumulative NCB | Sum insured grows | Stays same | Increases |
| Discount NCB | Premium falls | Decreases | Stays same |
In an inflationary healthcare environment where medical costs rise 8–12% annually, cumulative NCB is almost always more valuable than a discount. A 10% premium saving on a ₹12,000 annual premium is ₹1,200; a 10% cover increase on a ₹5 lakh policy is ₹50,000 of additional protection.
Does NCB Transfer if You Switch Insurers?
Under IRDAI's portability guidelines, the accumulated NCB on your policy follows you if you port to a new insurer at renewal. The new insurer must give you credit for the waiting periods you have served and the NCB you have built — subject to underwriting and the new insurer's own NCB cap structure.
In practice, porting with NCB requires you to apply at least 45 days before your renewal date and submit proof of claim-free years (your renewal notices or a certificate from the existing insurer). The receiving insurer may cap the portable NCB at their own maximum.
When comparing health insurance plans, check the NCB cap, the step-down rule post-claim, and whether NCB Protect is available — these three factors can significantly affect the long-term value of your policy.
Should You File a Small Claim or Pay Out of Pocket?
The break-even calculation is straightforward:
- Find your current NCB amount (effective cover beyond the base sum insured).
- Calculate how much NCB will be lost if you file — use your policy's step-down table.
- Compare that lost cover value with the claim amount.
Example: You have ₹50,000 of accumulated NCB. Filing a ₹12,000 claim resets it entirely. The "cost" of filing is ₹50,000 in lost cover — for a ₹12,000 recovery. Pay out of pocket.
Conversely, if you have NCB Protect, filing the ₹12,000 claim costs nothing in terms of bonus. File it.
Also consider: cashless claims often feel "free" and tempt policyholders to use the policy for small expenses. Building your NCB over several years and reserving claims for genuinely large hospitalisations is usually the smarter financial move.
Frequently Asked Questions
Is NCB applicable on individual and family floater policies?
Yes, but floater NCB applies at the policy level, not per member. If any family member makes a claim, the entire floater policy's NCB is affected. Individual policies accumulate NCB separately for each insured person.
What is the maximum NCB I can accumulate?
Most policies cap NCB at 50% of the base sum insured, though some products (like certain Star Health or Niva Bupa plans) allow up to 100%. After the cap, additional claim-free years do not add further cover unless you separately enhance the base sum insured at renewal.
Does NCB apply to term insurance as well?
The term NCB applies in motor insurance (where claim-free years reduce premium) and health insurance (where they increase cover or reduce premium). In term life insurance, there is no equivalent mechanism — the premium is locked at policy inception for the entire term.
Can I increase my sum insured separately from NCB?
Yes. At renewal, most insurers allow you to formally enhance the base sum insured (subject to underwriting and sometimes a fresh waiting period on the enhanced portion). This is different from NCB and sits on top of it. Combining a base sum insured increase with accumulated NCB is the most efficient way to keep pace with rising medical costs.