Most people renew their motor policy without reading the breakdown. They look at the total, wince, pay, and move on. Sitting inside that renewal notice is a discount that, left to compound, halves one half of your premium. It is called the No Claim Bonus, and it rewards something very simple: not claiming.
The Basic Mechanics
No Claim Bonus, or NCB, is a discount you earn for every claim-free year. It starts at 20 percent after one clean year and rises in fixed steps to 50 percent after five. Those slabs are mandated by IRDAI and identical at every insurer, so this is not something you can negotiate or shop around for. What you can shop for is the underlying car insurance premium the discount is applied to, which varies considerably.Three points decide how much it is actually worth to you.
It applies only to the own damage portion of your premium. The third party component is fixed by the regulator and no discount touches it. It follows from this that a third party only policy earns no NCB at all, because there is no own damage premium to discount. And the bonus belongs to you as the owner, not to the car, so it moves with you when you change vehicles.How the Numbers Stack Up Over Five Years
Take an own damage premium of ₹10,000 and assume five clean years.
|
At renewal |
NCB |
OD premium
payable |
|
Year 1 (first
policy) |
Nil |
₹10,000 |
|
Year 2 |
20% |
₹8,000 |
|
Year 3 |
25% |
₹7,500 |
|
Year 4 |
35% |
₹6,500 |
|
Year 5 |
45% |
₹5,500 |
|
Year 6 onward |
50% |
₹5,000 |
Across those first five years, you pay ₹37,500 instead of ₹50,000, a saving of ₹12,500, or a quarter of the total. On a more expensive car with an own damage premium of ₹25,000, the same five years save you over ₹31,000.
One honest caveat on that illustration: it holds the base premium flat for clarity, but in practice your IDV falls each year as the car depreciates, so the underlying damage premium drifts down too. The percentages are exact; treat the rupee figures as the shape of the thing rather than a forecast.What Actually Resets It, and What Does Not
One own-damage claim wipes the bonus completely. Not down a step, not proportionately. To zero, and you begin the climb again from 20 percent.Two details here are widely misunderstood and both matter.
Fault is irrelevant. If a truck reverses into your parked car and you claim on your own policy for the repair, your NCB is gone just the same. Indian motor insurance does not distinguish between at-fault and not-at-fault claims for this purpose. The only way your bonus survives that situation is if your insurer recovers the full cost from the other party rather than paying it from your own damage cover.
Third party claims, on the other hand, do not touch your NCB. If someone claims against you for damage or injury you caused, that is settled under the third party section, which carries no bonus to lose. The same logic means a total loss or theft claim does wipe it out, because that is paid from your own damage cover with nothing to recover from anyone else.
The Real Cost of a Small Claim
The instinct is to compare the repair bill against one year of discount. That understates it substantially, because losing the bonus does not cost you one year, it costs you the whole rebuild.Say you are sitting at 45 percent with a ₹10,000 own damage premium. Stay clean and you pay ₹5,000 a year for the next five years, ₹25,000 in total. Claim once and you restart at zero, paying ₹10,000, then ₹8,000, ₹7,500, ₹6,500 and ₹5,500 across the same period. That is ₹37,500, so the claim has cost you ₹12,500 in lost discount.
Now look at what you actually recovered. On a ₹10,000 bumper repair, depreciation takes 50 percent of the plastic part and your compulsory deductible removes another ₹1,000 to ₹2,000, so you might see ₹5,000 back. You have spent ₹12,500 of future discount to recover ₹5,000 today.
That is why paying small damage yourself is usually right once you have three or more claim-free years behind you. The crossover shifts with your premium and your slab, but the calculation is always the same: compare the amount you will actually receive after depreciation and deductible against the full multi-year cost of restarting.
Protecting Your NCB
An NCB protection add-on lets you claim without losing the bonus, typically once or twice in a policy year, for a modest addition to the own damage premium.Read what it actually promises before assuming it holds you where you are. Some versions preserve your slab intact; others step you down one level rather than to zero, which is better than nothing but not the same thing. Many exclude total loss and theft claims, which are exactly the claims that hurt most. And it only earns its cost once the bonus is worth protecting. At 20 or 25 percent there is little at stake. At 45 or 50 percent, on a car you drive daily through city traffic, it starts to make sense.
It is worth being clear about what related products do, since add-ons are often bundled together at renewal and easily conflated. Eco Assure, for instance, is a repair protection add-on rather than a bonus protection one. It covers repairs using sustainably restored parts without a depreciation deduction, which reduces what a claim costs you out of pocket, but it does not stop a claim from resetting your NCB. The two address different problems and one is not a substitute for the other.
What a Lapse Costs You
If you do not renew within 90 days of expiry, the bonus is forfeited entirely. Five clean years, gone, and you restart at zero.The 90 days is often called a grace period, which misleads people badly. It grants no cover and no legal protection. Your car is uninsured from the moment the policy expires and driving it is an offence throughout. The window concerns your discount and nothing else. Set a reminder well before the date.
Transferring It Between Insurers and Cars
You are entitled to carry your NCB when you switch insurers, and the new insurer must honour the same slab. Ask your existing insurer for an NCB retention or transfer certificate, and keep a copy of the expiring policy. Most verification now runs through the Insurance Information Bureau database, so this is faster than it used to be, though it still occasionally needs chasing.When you sell a car, the bonus stays with you and does not pass to the buyer, who starts at zero on their own policy. You can carry it to your next car provided it is the same class of vehicle, so a car bonus moves to another car but not to a two-wheeler. Retention certificates carry a validity window, so if you are between vehicles for a while, check the date before assuming the bonus is still waiting.
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