Ram bought a health insurance policy with a ₹10 Lakh cover in 2021. He stayed healthy, never went to the hospital, and didn’t make a single claim for three consecutive years. When his policy came up for renewal in 2024, something quietly changed. His effective coverage had grown to ₹16 Lakh. Same premium. Same insurer. No extra paperwork.
This isn’t magic. It’s called a No Claim Bonus. If you have a health insurance policy, it may already be working in your favour.
This guide explains everything you need to know about No Claim Bonus (NCB) in health insurance: what it is, how it works, its types, its limitations, and how to make the most of it.
What is No Claim Bonus (NCB) in Health Insurance?
A No Claim Bonus is a reward your health insurer gives you when you complete a policy year without making any claims. It is your insurer’s way of appreciating that you stayed healthy and claim-free during the year.
IRDAI allows NCB as either cumulative bonus (sum insured increase) or premium discount on renewal, depending on the product design, per policy design according to IRDAI’s 2024 master circular. The exact form depends on your specific policy.
The bonus accumulates with every claim-free year, up to a maximum limit set by the insurer. Once that cap is reached, the bonus stops growing, even if you continue to stay claim-free.
NCB is a useful booster, but it should never be the reason you choose a smaller base sum insured. One claim, especially in a family floater, can reduce years of accumulated bonus. So, the foundation of your cover still matters most.
To understand where NCB fits in your overall coverage, it’s important to first know how health insurance works in India.
Types of No Claim Bonus in Health Insurance
NCB typically comes in two forms. Understanding which type your policy offers helps you plan better.
Cumulative Bonus (Increase in Sum Insured): This is the more common and more valuable form of NCB. Every claim-free year, your sum insured increases by a fixed percentage of the base SI. You don’t pay anything extra for this added coverage.
Premium Discount: Some insurers offer a reduction in your renewal premium instead of increasing your sum insured. This works well if you already have adequate coverage and prefer to save on costs.
Some modern plans offer both options and let you choose which benefit you prefer at renewal. If your coverage already feels thin, always opt for the sum insured increase.
How Does No Claim Bonus Work in Health Insurance?
Suppose you buy a health insurance policy with a base sum insured of ₹10 Lakh, and your insurer offers an NCB of 20% for every claim-free year.
Your health cover will grow like this.
| Policy Year | Status | Effective Coverage (With NCB) |
| Year 1 | Base Year | ₹10,00,000 |
| Year 2 | Claim-Free (+20%) | ₹12,00,000 |
| Year 3 | Claim-Free (+20%) | ₹14,00,000 |
| Year 4 | Claim-Free (+20%) | ₹16,00,000 |
| Year 5 | Claim-Free (+20%) | ₹18,00,000 |
| Year 6 | Claim-Free (+20%) | ₹20,00,000 (Cap Reached) |
Note: In this example, 20% NCB is always calculated on the base sum insured of ₹10 Lakh, not on the growing total. So the addition remains a flat ₹2 Lakh every claim-free year. The bonus structure in health policies varies; always check your policy wording.
In 5 years, your cover grows 2x without paying for it. The additional coverage from NCB comes at no direct cost to you. However, your premium may rise at renewal because of your age or medical inflation.
But features like NCB are just one part of the policy. Understanding the full structure helps you make better decisions. Here’s a simple guide on how to read a health insurance policy document.
Key Features of No Claim Bonus
NCB Grows Every Claim-Free Year: The bonus builds up with each consecutive claim-free renewal. The accumulation is steady and predictable, which makes it easy to factor into your long-term financial planning.
Your Premium Doesn’t Rise Because of NCB: The additional coverage from NCB comes at no direct extra cost. Your premium may increase due to age or medical inflation, but NCB itself isn’t the reason.
There is a Cap: Insurers don’t let your bonus grow indefinitely. Most plans limit the NCB to grow up to 50% to 100% of your base sum insured. Once you reach that ceiling, the bonus stays constant, even if you remain claim-free.
A Claim Can Reduce or Reset It: This is the part most people miss. If you make a claim during a policy year, the accumulated NCB at renewal is either reduced or wiped out entirely depending on your policy terms.
NCB Doesn’t Port Directly: When you port your policy to another insurer, the accumulated NCB doesn’t transfer as-is. However, most insurers allow you to increase your new base sum insured to match your old base plus earned NCB. This way, you can have the total coverage without fresh waiting periods. However, you will have to pay a higher premium for your new significantly high base sum insured.
Portability is governed by specific regulations. Here’s a detailed guide for you on portability in health insurance.
Annual Health Check-Ups Don’t Count as Claims: Most insurers allow a free annual health check-up as a built-in benefit. Using this facility typically does not reduce your NCB.
What Happens to NCB When You Make a Claim?
This is where many policyholders are caught off-guard.
Say you’ve accumulated a 40% NCB over two claim-free years, taking your effective cover from ₹10 Lakh to ₹14 Lakh. In year three, you’re hospitalised and make a claim. At renewal, your NCB may be reduced by 20%, bringing it back to 20%, or ₹12 Lakh in effective cover.
To protect against this, many insurers offer an NCB Protection Rider, an optional paid add-on. This rider ensures that even if you make a claim, your accumulated bonus remains intact at renewal.
The NCB protection rider is worth considering. The additional premium depends on your age and health profile. If you’ve spent five claim-free years accumulating a significant bonus, losing it in one claim can be financially painful.
NCB vs Guaranteed Cumulative Bonus: Are They the Same?
Not exactly. NCB is earned only when you don’t make a claim. If you make a claim, the bonus doesn’t accrue for that year and may even reduce.
A Guaranteed Cumulative Bonus (also called a Loyalty Bonus) is different. It increases your sum insured simply for renewing your policy, regardless of whether you made a claim or not. It rewards continuity, not just claim-free behaviour.
Some modern health plans offer a guaranteed cumulative bonus. If you want the most comprehensive protection, look for plans that provide a loyalty bonus staying with the insurer long-term.
Benefits of No Claim Bonus in Health Insurance
Builds a Stronger Safety Net Without Extra Cost: Every claim-free year, your coverage quietly expands. Over five to six years, you could effectively double your sum insured at no additional cost for the bonus portion.
Rewards Responsible Health Habits: If you invest in preventive care, eat well, and avoid unnecessary hospitalisation, NCB makes sure your insurer recognises that. It’s a financial incentive for good health, built right into your policy.
Valuable for Long-Term Policyholders: The longer you stay insured and claim-free, the higher your effective coverage becomes. It pays off significantly in the long run. This is why buying health insurance young and maintaining it consistently matters. Buy it late or let it lapse, and you lose on this valuable feature.
Limitations of No Claim Bonus: What to Watch Out For
NCB is a good feature, but it’s not without fine print. Here’s what to keep in mind.
It Has a Fixed Ceiling: Once your NCB reaches its maximum, usually 50% to 100% of the base sum insured, it stops growing. If healthcare costs continue to rise at 10–15% per year, a capped NCB may not keep pace.
It Can Be Lost in One Bad Year: A single hospitalisation, especially in a family floater where even one member’s claim counts, can undo years of accumulated NCB.
It Doesn’t Fix a Weak Base Cover: NCB can boost ₹3L to ₹6L, but that’s still inadequate for major illness. Start with ₹10–15L base in metros.
Most people overestimate NCB and underestimate base cover. This is one of the biggest mistakes we see at Algates Insurance. NCB looks attractive, but in high-inflation healthcare, it’s not enough alone.
This is why understanding how much health insurance you actually need is critical before relying on features like NCB
How to Evaluate No Claim Bonus (NCB) When Choosing a Health Insurance Policy
Two policies with the same premium can offer very different bonus structures. Here’s how to evaluate whether the NCB in your policy actually adds value.
What Good NCB Looks Like
A strong NCB structure should meaningfully improve your coverage over time:
- 20%–50% increase every claim-free year: This ensures your coverage grows at a meaningful pace.
- Maximum cap of 100% or higher: Over time, your total cover should ideally double.
- Cumulative bonus (increase in sum insured), not just premium discount: Higher coverage is more valuable than small savings on premium.
- Availability of an NCB protection rider: This helps preserve your accumulated bonus even if you make a claim.
Red Flags to Watch Out For
Some NCB structures look attractive but add limited real value:
- Low NCB (10% per year): Growth is too slow to keep up with rising healthcare costs.
- Cap at 50% of base sum insured: Your bonus stops early, limiting long-term benefit.
- Full reset of NCB after one claim: Years of accumulated benefit can disappear in a single hospitalisation.
Key Insight: NCB should improve your coverage over time, not compensate for choosing a weak base sum insured.
Your base coverage matters far more. So, here’s a clear breakdown of how to choose the right health insurance coverage.
How to Preserve Your NCB
Avoid small, unnecessary claims. If your hospitalisation bill is only slightly above your deductible or is manageable out of pocket, consider paying it yourself to protect your NCB. However, never avoid hospitalisation because of NCB. Your health is always the priority.
Renew on time, every time. If your policy lapses beyond the grace period (usually 30 days for annual policies), your accumulated NCB can be lost entirely.
Final Thought
NCB is a feature in health insurance that genuinely rewards you for staying healthy. It can meaningfully grow your protection over time. But NCB should never be the reason you compromise on your base coverage.
At Algates Insurance, we help you build health coverage that works when it counts: solid base with smart bonuses. No sales pressure. No commissions influencing our advice.
Book a free consultation with an Algates Insurance expert and make sure your health cover is built on a base that works, including NCB.
Frequently Asked Questions
NCB is a benefit offered by health insurers to policyholders who complete a policy year without making any medical claim. It either increases the sum insured at renewal or offers a discount on the renewal premium, depending on the plan.
No. The NCB itself does not increase your premium. Your premium may rise at renewal due to age or insurer-specific reasons, but the additional coverage from NCB comes at no extra cost.
Depending on your insurer and policy terms, making a claim will reduce or reset your accumulated NCB at renewal. Some insurers offer an NCB Protection Rider to prevent this.
NCB does not transfer directly. However, most insurers allow you to increase your new base sum insured to cover the accumulated NCB amount, and continue the policy without fresh waiting periods.
Yes. Most policies cap NCB at 50% to 100% of the base sum insured. Once this limit is reached, the bonus does not increase further, even if you remain claim-free.
In most cases, no. A free health check-up is typically a built-in policy benefit and does not count as a claim. But confirm this in your specific policy documents.
Yes. NCB applies to family floater plans as well. If no member of the family makes a claim in a policy year, the entire family's sum insured increases at renewal.
It is an optional paid add-on that protects your accumulated NCB even when you make a claim. This ensures your sum insured does not reduce at renewal after a hospitalisation.
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