Should I claim car insurance for small damage? The NCB break-even calculation
When paying a dent or scratch repair yourself beats claiming in India: the NCB you lose over five years, the deductible and depreciation, with a worked break-even and a quick rule.
For small own-damage repairs, compare what the insurer would actually pay (the bill minus deductibles and, without zero dep, depreciation on parts) with the NCB you would lose over the next few years (the discount gap until you climb back to your current slab, plus GST). If the insurer's payout is smaller than the NCB loss, pay the garage yourself. At 45–50% NCB, the NCB loss from one claim is often ₹10,000–₹25,000 for a typical hatchback or sedan, so many repairs under that range are not worth claiming. Use your own premium figures; the method matters more than the example.
This guide is part of the car insurance renewal checklist. The NCB slabs themselves are explained in NCB rules.
Step 1: work out what the insurer would pay
Insurer pays = repair bill − compulsory deductible − voluntary deductible − depreciation on parts (if no zero dep).
Illustrative. A scraped rear bumper and dented boot lid on a car 2 years 6 months old, no zero dep:
| Item | Cost | Depreciation | Deduction |
|---|---|---|---|
| Rear bumper (plastic) | ₹6,500 | 50% | ₹3,250 |
| Boot lid repair, no replacement (labour) | ₹4,000 | None | ₹0 |
| Paint material | ₹3,000 | 50% | ₹1,500 |
| Painting labour | ₹2,500 | None | ₹0 |
| Total | ₹16,000 | ₹4,750 |
Insurer pays: ₹16,000 − ₹4,750 − ₹1,000 compulsory deductible = ₹10,250. You pay ₹5,750 anyway. The claim payout estimator does the parts part of this calculation.
With zero dep, the insurer would pay ₹15,000 (bill minus the deductible), but note that many zero-dep add-ons limit the number of claims per year.
Step 2: work out the NCB you would lose
Take your basic OD premium before NCB from the renewal notice. Suppose it is ₹12,000, and you have 35% NCB now, so you would move to 45% at the next renewal and 50% the year after.
| Next renewal | NCB with no claim | NCB after claim | Extra OD paid |
|---|---|---|---|
| Year 1 | 45% | 0% | ₹5,400 |
| Year 2 | 50% | 20% | ₹3,600 |
| Year 3 | 50% | 25% | ₹3,000 |
| Year 4 | 50% | 35% | ₹1,800 |
| Year 5 | 50% | 45% | ₹600 |
| Total | ₹14,400 |
Add 18% GST: ₹14,400 × 1.18 = ₹16,992. This assumes the basic OD premium stays at ₹12,000; in practice it usually falls as the car ages, so the true loss may be somewhat lower.
Step 3: compare
- Insurer pays: ₹10,250
- NCB loss over five years: about ₹16,992
Pay the garage yourself. Claiming would cost you about ₹6,700 more over five years than paying the full ₹16,000 now. Even with zero dep (insurer pays ₹15,000), claiming would be roughly break-even, because the five-year NCB loss of about ₹17,000 is larger than the ₹15,000 payout.
A quick rule of thumb
- If your NCB is 0% or 20%, the NCB loss is small; claiming moderate repairs is usually sensible.
- At 35% or more, calculate before claiming anything under about one and a half times your annual basic OD premium.
- For large claims (major accident, theft, flood, fire), claim. The NCB loss is small compared with the bill.
NCB protection changes the calculation: if you have it and have not used the allowed number of claims this year, the NCB loss is nil and you should usually claim. You still pay the deductible and any depreciation not covered.
Things that change the answer
- The car's age. Older cars attract more depreciation on metal parts, so the insurer pays less.
- Whether the other driver was at fault. If another identified vehicle caused the damage, you may be able to recover from its insurer instead of using your OD cover; your own insurer can also recover from them, but your NCB may still be affected while that happens.
- Third-party involvement. If anyone was injured or another vehicle was damaged, inform your insurer regardless of what you decide about your own repairs. Not intimating a third-party incident can create problems later.
- Cashless repair. Paying yourself means paying the garage in full, so ask for the bill before work starts and compare outside-garage prices.
Do you have to report every incident?
Your policy requires prompt intimation of accidents that may give rise to a claim. If you report damage and then decide not to claim, ask the insurer to record the claim as withdrawn before any payment and keep the acknowledgement. If there was a third party, always report it.
Mistakes to avoid
- Claiming a ₹7,000 scratch at 50% NCB and losing far more in discount.
- Forgetting the depreciation deduction and assuming the insurer pays the whole bill.
- Not reporting an accident with an injured pedestrian because the car damage was small.
- Splitting one accident's damage into two claims, which looks like two incidents and may breach the policy.
Related guides
Frequently asked questions
Does a windscreen claim affect NCB?
Under many wordings, glass-only claims still count as OD claims and affect NCB. Some insurers treat them differently; check before you claim.
If I pay myself, can I still claim later for the same damage?
Generally no. Once repaired without a survey, the insurer cannot assess the loss. Decide before the repair starts.
Does claiming for theft of an accessory cost NCB?
Yes, if the insurer pays under the OD section.
What if the damage was caused by a flood?
Flood is an insured peril and the bill is often large. Claim, and do not restart a flooded engine.
Sources
- IRDAI — consumer guidance on motor claims
- Insurance Information Bureau of India — industry claims data used for NCB verification
- Bima Bharosa — if NCB is refused despite a withdrawn claim
