A fire, a flood, a burst sprinkler main, a supplier’s plant going down, or an equipment failure stops the business. Property insurance pays to rebuild the building and replace the machine. Business interruption coverage is supposed to pay for the income the business did not earn while it was down.
The gap between what a policyholder believes they lost and what the policy will pay is often wide, and it is rarely because the insurer is acting in bad faith. It is because business interruption measurement follows specific policy language that does not match how owners think about their own losses.
General information about claim quantification. Coverage is determined by the specific policy; work with your broker and, where appropriate, coverage counsel.
What the coverage actually measures
Most business income forms cover the net income that would have been earned plus continuing normal operating expenses, during the period of restoration, subject to the policy limit.
That formulation has three components, and each is a source of dispute.
Net income that would have been earned. A but-for projection. What would the business have done had the loss not occurred? This requires the same analytical discipline as a lost profits damages calculation: trend the business forward from its own history, adjust for known market conditions, and account for factors unrelated to the loss.
Continuing normal operating expenses. Costs the business kept paying while shut down. Rent, insurance, loan interest, salaried staff retained, utilities at a base level, and depreciation in some forms. These are covered because the business incurred them without the revenue to support them.
Discontinued expenses are not covered. Costs that stopped because operations stopped, such as raw materials, hourly production wages if laid off, freight, and sales commissions, are saved expenses and are deducted. This is the point policyholders most often misunderstand: the claim is not lost revenue, it is lost revenue less the costs that were not incurred.
The period of restoration
The indemnity period typically begins after any waiting period and runs until the property should be repaired, rebuilt, or replaced with reasonable speed and similar quality.
Two features matter:
It is theoretical, not actual. The period runs for the time restoration should have taken. If the policyholder took eleven months because of an unrelated delay in their own decision-making, and reasonable restoration would have taken six, the insurer will argue for six. Conversely, delays outside the insured’s control, such as permitting or a genuine materials shortage, generally extend it.
It may not equal the period of lost income. A restaurant that reopens on day 120 does not return to pre-loss revenue on day 121. Extended period of indemnity coverage, where purchased, continues payment for a defined additional period while the business recovers its customer base. Without that endorsement, recovery generally stops at reopening.
Extra expense
Costs incurred specifically to reduce the loss or to continue operating: temporary premises, equipment rental, expedited shipping, overtime, outsourcing production to a competitor, temporary staff.
Extra expense is often the most valuable part of a claim and the most under-documented. The test is generally whether the expenditure reduced the business income loss by at least as much as it cost, or whether it was necessary to continue operations.
Document these in real time. Separate general ledger accounts or job codes set up on day one make the claim provable; reconstructing them nine months later from a box of invoices does not.
Contingent business interruption
Covers loss caused by damage to someone else’s property: a key supplier, a major customer, or a location that attracts traffic to yours. Increasingly relevant given supply chain concentration, and frequently subject to sublimits and specific scheduling requirements. Many policyholders discover after a loss that their critical supplier was never scheduled.
How the calculation is built
- Establish the pre-loss trend. Several years of monthly revenue and profitability, adjusted for seasonality and for any growth or decline trend.
- Project but-for revenue for the indemnity period. Using the trend, plus known information: a contract signed before the loss, a planned expansion, an announced customer departure. Industry and local market data supports or tempers the projection.
- Determine actual revenue during the period. Including any revenue earned from temporary operations, partial resumption, or alternative locations.
- Compute lost revenue. But-for less actual.
- Analyze cost behavior. Classify each expense line as continuing, discontinued, or partially continuing, based on the actual records rather than an assumed percentage. This is the most labor-intensive and most disputed step.
- Apply saved expenses. Deduct the costs not incurred.
- Add extra expense, supported by documentation and by the test of whether it mitigated the loss.
- Deduct any mitigation revenue and account for make-up sales after reopening, which insurers will identify.
- Apply policy provisions. Deductible or waiting period, coinsurance, limits, sublimits, and any ordinance or law considerations.
Where claims run into trouble
Poor pre-loss records. A business without reliable monthly financials cannot establish a trend. Cash-intensive businesses with underreported revenue face an obvious and uncomfortable problem: the claim can only be built on reported income.
Records destroyed in the loss. Off-site or cloud backup of accounting data is a claim-preparation measure as much as an IT measure.
No contemporaneous extra expense tracking. Money spent without documentation is money that will be challenged.
Aggressive but-for projections. A claim projecting 30% growth from a business that has been flat for four years invites scrutiny of the entire submission.
Ignoring market conditions. If the entire local market declined during the indemnity period for reasons unrelated to the loss, the but-for projection must reflect it.
Missing the extended period. Reopening does not mean recovering. Check whether the policy includes extended indemnity and for how long.
Late notice and missed proof-of-loss deadlines. Policies impose time limits. These are among the few ways a valid claim gets denied on procedure.
Practical steps after a loss
- Notify the insurer promptly and confirm in writing.
- Open separate accounts or codes for all loss-related costs before spending anything.
- Preserve records, including the pre-loss financials, offsite.
- Document the decision-making on restoration timing, so the reasonable-speed question has contemporaneous support.
- Photograph and log everything, including conditions that caused delays.
- Engage a forensic accountant early. Claim preparation costs are sometimes covered by a claim preparation expense endorsement, and early involvement usually improves both the size and the speed of the recovery.
- Keep mitigating. Reasonable efforts to resume operations are generally required and are also good business.
FAQ
Is business interruption the same as lost profits in litigation?
The analytical framework is similar, but insurance recovery is governed by policy language rather than by damages law. Continuing expenses are treated differently, and the indemnity period is defined by the policy.
Does the claim cover lost revenue?
No. It covers lost net income plus continuing expenses. Revenue that would have been consumed by costs the business did not incur is not part of the loss.
How long does a business interruption claim take?
It varies widely with complexity and cooperation. Well-documented claims with clean pre-loss records settle materially faster.
Can I claim for a supplier’s shutdown?
Only with contingent business interruption coverage, and often only if the supplier was scheduled in the policy. Check before a loss, not after.
