Underinsurance in fire policies: how the average clause reduces every claim

Underinsurance is the most common and most expensive error in commercial property insurance, and it is expensive precisely because it does not announce itself. The policy is issued, the premium is paid, everything appears normal, and the shortfall only becomes visible in the settlement letter.

How the average clause works

If the sum insured is less than the value at risk, the insurer pays only the proportion of the loss that the sum insured bears to the true value. Insure a ₹4 crore facility for ₹2 crore, suffer a ₹40 lakh fire, and the settlement is ₹20 lakh before the excess.

The intuition that a ₹2 crore policy should pay a ₹40 lakh loss in full is entirely reasonable and entirely wrong. The clause exists because premium is charged on the sum insured, and a policyholder who declared half the value paid half the premium for a risk that included every small and medium loss in full.

Underinsurance does not reduce your cover for large losses. It reduces your cover for all of them.

The 15 per cent waiver

India's standardised small-enterprise fire products - Bharat Sookshma Udyam Suraksha and Bharat Laghu Udyam Suraksha - waive underinsurance up to 15 per cent. Within that margin, a shortfall is disregarded and the claim is paid in full.

That is a meaningful buffer against ordinary valuation drift. It is not a licence to under-declare, because beyond 15 per cent the average clause applies to its full extent, not merely to the excess over the waiver.

Where the shortfalls come from

Buildings insured at book value or at the original construction cost, sometimes decades old. Machinery insured at written-down value, which is an accounting figure with no relationship to replacement cost. Stock insured at average rather than peak. Sums insured rolled forward at renewal without revision while construction and equipment costs moved substantially.

And omitted items entirely: interior fitouts and improvements made by a tenant, boundary walls, external structures, electrical installations, and goods held for third parties.

Getting the number right

Buildings should be at reinstatement cost including demolition, debris removal, professional fees and the cost of complying with current building regulations. Machinery at the cost of replacing with new equivalent, including freight, duty, installation and commissioning. Stock at peak, or on a declaration policy that adjusts to actual values.

For substantial property, a professional valuation every three to five years costs a fraction of a single average-clause reduction. Between valuations, index the sums insured rather than leaving them static.

The check worth doing now

Take your current sums insured and ask what it would actually cost to rebuild and re-equip today. If the second number is materially higher, you are underinsured, and every claim you make between now and the next renewal will be reduced accordingly.

Sums insured can be increased mid-term on payment of pro-rata premium. It does not have to wait for renewal, and there is rarely a good reason to let it.