Underinsurance is invisible until the claim cheque arrives short. What broker research actually measures, why average clauses cut payouts, and what would close the gap.
The insurance protection gap usually gets discussed as the distance between people who have insurance and people who have none. For small businesses there is a second gap hiding inside the first: firms that hold policies whose sums insured no longer match reality. This is underinsurance, it is close to invisible in normal times, and it converts directly into shortfall on the day a claim is paid. This piece reviews what the available evidence actually measures, how the shortfall mechanics work, and where the honest uncertainty lies.
The key takeaway up front: the best-documented evidence — largely from the UK, where brokers and loss adjusters publish research — suggests underinsurance in commercial property is not a tail problem affecting careless firms, but a condition affecting a large share of otherwise insured businesses. Whether the same proportions hold in Gulf markets is not directly measured, and we flag that limitation explicitly below.
What the research actually says
The most specific recent figures come from broker research. Gallagher's UK work, as reported by StrategicRISK, found around 46 percent of commercial properties underinsured, with an average coverage shortfall of roughly 40 percent against true reinstatement values. The same research surveyed claims professionals: 67 percent said they had been forced to reduce or reject claims in the previous year, and 54 percent identified business interruption cover as inadequate. The mechanism behind the drift is mundane — construction material costs rose sharply in the years after 2020, while sums insured were rolled over unchanged at renewal.
Business interruption deserves its own line of evidence, because there the gap runs through wordings as well as sums. During the pandemic, the scale of contested cover became unusually visible: the UK regulator's test case on business interruption wordings was, per the FCA, relevant to roughly 370,000 policyholders holding around 700 policy types across 60 insurers. The courts largely resolved that episode in policyholders' favour, but its research value stands independent of the outcome — it demonstrated how many insured businesses did not know what their policies covered until a systemic event forced the question.
How the shortfall actually bites
Underinsurance would matter less if a short sum simply capped the payout. The standard mechanics are harsher, through the average clause (also called proportional reduction) found in most commercial property wordings: if you insure for half the true value, the insurer pays half of any claim — including partial ones.
Worked example. A workshop's true reinstatement value is 4 million; it is insured for 2 million. A fire causes 1 million of damage — well within the sum insured. Under average, the payout is 500,000: the claim reduced in the same proportion as the underinsurance. The firm is not underpaid because the limit was reached; it is underpaid because the premium never reflected the real exposure. This is the mechanism that makes underinsurance a claim-time discovery, and it is why the research finding that most shortfalls exceed a third is so consequential: at those levels, average clauses turn survivable losses into existential ones.
Business interruption compounds it with a second failure mode: indemnity periods chosen too short. A sum insured can be perfectly adequate for twelve months of lost profit and still leave the business bare in months thirteen to twenty of a slow rebuild.
Why the gap forms
- Inflation drift: sums fixed at purchase, costs moving every year — the dominant driver in the recent UK data, where rebuild costs outran renewals.
- Growth drift: an SME growing 30 percent a year outgrows its own policy annually; last year's turnover is the wrong basis for next year's interruption cover.
- Valuation avoidance: professional valuations cost money and feel optional; the Gallagher research found claims professionals attributing a large share of gaps to skipped revaluations.
- Deductible thinking: owners set sums by premium budget rather than exposure, treating the sum insured as a price lever — which the average clause punishes precisely.
What we cannot measure
Honesty about the evidence base matters here. The published percentages describe UK commercial portfolios measured by brokers and loss adjusters with a commercial interest in the topic — real data, but not neutral census data, and not a random sample of all SMEs. Comparable published measurements for Saudi Arabia and the wider Gulf are scarce; we are not aware of an equivalent public dataset, so the honest statement is that the gap here is undimensioned, not that it is absent. The structural drivers — cost inflation, fast-growing firms, rolled-over renewals — are all present in the region, and fast growth in particular is more pronounced, which is suggestive but not proof.
What would close the gap
The remedies follow from the causes. Index-linking sums insured to construction and wage costs removes the inflation drift by default. Data-connected renewal — checking sums against live accounting figures rather than last year's form — attacks the growth drift, and is one of the strongest practical arguments for distributing SME cover through the software platforms that hold those figures. And plain-language disclosure of average clauses at purchase would at least convert silent underinsurance into a chosen risk. None of these is technically difficult; all of them cut against renewal-by-inertia, which is the business model the gap quietly sustains.
Sources for the figures cited are linked below. Where this piece interprets — particularly on the transferability of UK findings to this region — the judgement is ours and labelled as such.