No-claim bonus on car insurance: how it builds, and how one claim wipes it

A no-claim bonus is one of the best deals in car insurance: drive claim-free and your premium falls, year after year, until you're paying half of what someone with the same car pays. The sting is in how easily it vanishes. In most policies, a single own-damage claim resets the whole thing to zero.

Here's how NCB builds, what a claim does to it, why it belongs to you rather than your car, and when it's smarter not to claim at all.

What NCB is on car insurance

A no-claim bonus (NCB) is a discount on your own-damage premium, earned for each year you don't make an own-damage claim. Two things are worth fixing in your mind from the start:

• It's a discount, not extra cover. Unlike a health policy's cumulative bonus (which grows your sum insured), motor NCB only lowers what you pay.
• It applies to the own-damage portion only. Your mandatory third-party premium is fixed by the regulator and never gets the discount.

The NCB slab

The discount climbs on a fixed ladder for each consecutive claim-free year:

Claim-free years	NCB discount
After 1 year	20%
After 2 years	25%
After 3 years	35%
After 4 years	45%
After 5 years	50%

Fifty percent is the ceiling. Five clean years roughly halve your own-damage premium, which on a well-insured car is real money every renewal.

The catch: one claim resets it

Here's the part that costs people the most. In a standard policy, making one own-damage claim resets your NCB to zero at the next renewal. You don't drop one rung; you fall off the ladder. A 50% discount built over five years can be gone after a single claim for a modest repair.

That's why a no-claim bonus is as much about discipline as luck: the cheapest claim is often the one you don't make.

NCB belongs to you, not the car

A common myth is that NCB is tied to the vehicle. It isn't. The bonus belongs to the owner, which has two useful consequences:

• Change your car and keep the bonus. When you sell and buy another car, your NCB carries over. Ask your insurer for an NCB retention letter when you sell; it's valid for a set period.
• Switch insurers and keep it too. NCB is portable. Moving to a new insurer at renewal doesn't reset your earned discount, as long as you transfer it.

So never let an agent tell you a new car or a new insurer means starting from zero.

NCB protection, and when not to claim

Two tools protect the bonus you've built:

1. NCB-protection add-on. For a small extra premium, it lets you make one or more own-damage claims in a year without losing your accumulated NCB. It's most worth it once you're at 45-50%, where there's the most to lose.
2. Skipping small claims. Before claiming for a minor dent, do the maths. If the repair is, say, ₹6,000 and claiming would cost you a ₹15,000 NCB discount next year (plus your deductible), paying out of pocket is cheaper. Compare the payout against the NCB you'd forfeit, every time.

This is also where it pays to know your other motor numbers, your IDV, deductible, and whether you have zero-depreciation, because together they decide what a claim is really worth.

The bottom line

NCB rewards careful drivers with a discount that can reach 50%, but it's fragile: one own-damage claim usually wipes it. Treat it as an asset. Protect it with the add-on once it's high, port it when you change car or insurer, and don't surrender years of discount for a small repair you could pay yourself. Played right, the no-claim bonus is one of the most valuable lines on your policy.

Want to see your NCB and how the rest of your motor cover stacks up? FinDecode reads your policy against IRDAI rules and flags your IDV, NCB, deductibles and add-ons in plain English, every figure from your own document. Scan your policy free → · Related: why car insurance claims get rejected and zero-depreciation cover.

FAQ

What is a no-claim bonus in car insurance? A discount on your own-damage premium for each claim-free year, rising from 20% to 50% over five years. It lowers your premium without reducing cover.

Does a claim affect my NCB? Yes. One own-damage claim usually resets accumulated NCB to zero at renewal, unless you have an NCB-protection add-on.

How do I transfer my NCB to a new car? NCB belongs to you, not the car. Ask for an NCB retention letter when you sell; it lets your new car's policy apply the earned discount.

What is NCB protection? An add-on that lets you make one or more claims without losing your NCB. Worth considering once you're at 45-50%.

Should I always claim for minor damage? No. If the repair is small and your NCB is high, the discount you'd lose can exceed the claim. Compare the two first.

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FinDecode provides AI-assisted analysis to help you understand your policy. It is not legal or financial advice. NCB slabs and transfer rules follow standard Indian motor-insurance practice and your insurer's wording; your exact discount is stated in your policy. Third-party premium is set by IRDAI and is not subject to NCB.