Preparing a Large Business-Interruption Claim and the Role of Forensic Accountants in India in 2026

A large business-interruption (BI) claim is harder to settle than the property-damage claim it sits alongside, because it is not a claim for something that was destroyed but a claim for income that would have been earned had the damage not occurred. The property-damage claim measures what was lost: a building, machinery, stock. The BI claim measures a counterfactual: what the business would have earned over the period it was disrupted, less what it actually earned, adjusted for the costs it saved and the extra costs it incurred to keep going. That counterfactual has to be constructed from the accounts, projected forward, and defended against an insurer testing every assumption, which is why a large BI claim is an exercise in financial quantification rather than physical assessment.

The stakes are high because BI losses on a serious incident often exceed the property damage. A fire that destroys a production line costs the value of the line to rebuild, but the lost gross profit over the months the line is down, plus the extra costs of working around the disruption, can be a multiple of that. For a manufacturer, a hotel, a process plant or a logistics operator, the BI element is frequently the larger and the more contested part of a large loss, and the settlement turns on the quality of the quantification on both sides.

The mechanics of how a BI policy responds, the indemnity period, the gross-profit definition and the increased-cost-of-working provision, are the framework within which the claim is built, and getting them right is the foundation of a fair settlement. The policyholder that understands the mechanics, prepares the evidence and runs the process deliberately recovers what the policy promises; the policyholder that treats the BI claim as a residual of the property claim, to be sorted out later, tends to recover less and slower. This post sets out the mechanics, the evidence, the roles of the loss adjuster and the policyholder's own claim-preparation support, the recurring disputes, and how to run the process to a fair outcome. The same disciplines apply whether the trigger is a fire, a machinery breakdown or another insured event, and they build on the work of quantifying a business-interruption claim.

A BI claim is built on three mechanical elements, and the policyholder and its advisers have to work each one correctly.

The indemnity period

The indemnity period is the period, starting from the date of the damage, during which the policy responds to the loss of income, up to the maximum stated in the policy (commonly twelve, eighteen or twenty-four months). It runs until the business's results are no longer affected by the damage, or until the maximum period expires, whichever is shorter. Setting the maximum indemnity period correctly at the outset, when the policy is bought, matters because a business that genuinely takes eighteen months to recover from a major loss but holds a twelve-month indemnity period is uninsured for the last six months of its loss. At claim, the actual recovery period within that maximum has to be established from the facts: how long the business was actually affected, including the tail during which it was operating but not yet back to where it would have been.

Gross profit

The sum insured and the loss are measured on gross profit, which in BI terms is a defined figure, the turnover less the specified variable (uninsured working) costs that fall away when turnover falls, not the accounting profit. The insured gross profit is the part of turnover that has to keep paying the standing charges and the net profit, and it is this that the damage erodes when turnover drops. The loss of gross profit is calculated by applying the rate of gross profit to the shortfall in turnover caused by the damage, measured against what the turnover would have been but for the damage. Defining the variable costs correctly, the costs that genuinely vary with turnover and so are excluded from gross profit, is one of the technical cruxes of a BI claim, because misclassifying a cost shifts the gross-profit figure and the loss.

Increased cost of working

The increased cost of working (ICOW) provision covers the additional expenditure the business reasonably incurs to reduce the loss of turnover: renting temporary premises, hiring substitute machinery, subcontracting production, paying overtime, expediting repairs. The standard wording covers ICOW only up to the amount it saves in reduced loss of gross profit (the economic-limit test), so the business cannot recover extra costs that exceed the loss they avert. Some policies add additional increased cost of working that goes beyond that economic limit, which matters for businesses where keeping going at any cost protects a market position. The ICOW claim has to be evidenced as reasonable expenditure that genuinely mitigated the loss, and it is often a significant and contested part of the total.

These three elements together produce the BI loss: the reduction in gross profit over the indemnity period, plus the increased cost of working, less any savings in standing charges, subject to the sum insured and the average clause. Each element is a place where the claim is built or lost, which is why the quantification is detailed and why the evidence behind each assumption matters.

A BI claim is only as strong as the financial evidence behind it, and assembling that evidence is the bulk of the work in preparing a large claim. The number the policyholder presents has to be built from the records and defensible against challenge, because the insurer's adjuster will test every input.

The core evidence is the business's financial history and its forward projections. The historical accounts, the management accounts, the audited financial statements, the GST returns and the sales records establish the turnover and the rate of gross profit before the loss, and they are the baseline from which the loss is measured. The projections, what turnover and gross profit would have been over the indemnity period but for the damage, have to be built from that history adjusted for the trends and circumstances that would have applied, and supported by evidence such as order books, contracts, budgets and market data, so that the but-for figure is grounded rather than asserted.

The documentation a large BI claim typically needs includes:

1. Pre-loss financials: several years of accounts and management accounts, GST returns, and monthly turnover and gross-profit records, to establish the baseline and the rate of gross profit.
2. The but-for projection: the basis on which turnover would have grown or moved over the indemnity period, supported by order books, contracts, budgets and sector data, so the trends adjustment is evidenced.
3. Actual results during disruption: the turnover and costs actually achieved while disrupted, to measure the shortfall against the but-for figure.
4. Increased-cost-of-working evidence: invoices and records for the additional expenditure, with the rationale that each item mitigated the loss within the economic limit.
5. Savings evidence: the standing charges and other costs that did fall away during the disruption, which reduce the claim and which the policyholder should identify honestly rather than have the adjuster find.
6. The chronology: the dates of the damage, the disruption, the partial and full recovery, to establish the actual indemnity period within the maximum.

A large BI claim is settled through the interaction of two financial assessments: the one the insurer's loss adjuster builds and the one the policyholder, usually with its own claim-preparation support, presents. Understanding the two roles, and the difference between them, is central to running the claim well.

The insurer's loss adjuster

The loss adjuster is appointed by the insurer to investigate and quantify the loss on the insurer's behalf. On a large or complex loss this is typically a licensed surveyor and loss assessor, and on a significant BI claim the adjuster may bring in forensic-accounting support to test the financial quantification. The adjuster's job is to establish what the policy responds to and to arrive at a figure the insurer can settle on, which means testing the policyholder's assumptions: the rate of gross profit, the but-for projection, the trends adjustment, the savings, the reasonableness of the increased costs, and the indemnity period. The adjuster is not the policyholder's adviser; the adjuster works for the insurer, even though a good adjuster runs a fair and professional process. The policyholder should treat the adjuster as a professional counterparty, cooperate fully and provide the evidence, while recognising that the adjuster's figure reflects the insurer's interest in the assumptions.

The policyholder's claim-preparation support

The policyholder is responsible for proving its own loss, and on a large BI claim it is rarely equipped to do that unaided while also running a disrupted business. So the policyholder commonly engages its own claim-preparation support, often a forensic accountant or a specialist claim-preparation firm, sometimes through the broker, and sometimes funded by a claim-preparation-costs extension in the policy. This support builds the policyholder's quantification, assembles and presents the evidence, and negotiates the assumptions with the adjuster on the policyholder's behalf. The value of having dedicated support is that the policyholder's loss is built and argued by someone whose job is to maximise the legitimate recovery, matching the financial firepower the insurer brings through the adjuster, rather than leaving the policyholder to respond to the adjuster's figure without the means to construct and defend its own.

Why both sides bring forensic accountants

The quantification of a large BI loss is a forensic-accounting exercise, so it is common for both sides to involve forensic accountants: one supporting the adjuster and the insurer, one supporting the policyholder. The two forensic accountants then work through the gross-profit rate, the projection, the savings, the trends and the increased costs, narrowing the difference between their figures through evidence and argument until a settlement is reached. The settlement is, in effect, the resolution of the difference between two professionally-built numbers, which is why the quality and the evidence of the policyholder's number determines the outcome. A policyholder that presents a well-built, well-evidenced quantification negotiates from strength; one that presents a thin or poorly-supported figure concedes ground to the adjuster's assessment. The broker's claims-advocacy role is to ensure the policyholder has the support to build and defend its number and to keep the process moving to a fair settlement.

Large BI claims tend to dispute the same points, and a policyholder that anticipates them prepares the evidence to win them rather than concede them.

Sum-insured adequacy and under-insurance

The first recurring dispute is whether the BI sum insured (the insured gross profit) was adequate, because under-insurance triggers the average clause and reduces the claim proportionately. BI under-insurance is common because the gross-profit sum insured has to anticipate the gross profit during the indemnity period, including growth and inflation over a recovery that may end well after the policy was bought, and businesses frequently set the figure on stale numbers. If the sum insured turns out to be less than the gross profit at risk, average applies and the claim is scaled down. The defence is to set the sum insured correctly when buying and renewing the cover, including a realistic indemnity period and an uplift for projected growth and inflation, so that at claim the sum insured is adequate and average does not bite. A business-impact analysis to set the BI sum insured is the preventive discipline.

Savings

The second recurring dispute is savings: the standing charges and costs that fell away during the disruption, which reduce the loss. The insurer will look for costs the business stopped paying while disrupted, wages not paid, power not consumed, materials not bought, and net them off the gross-profit loss. The policyholder's interest is to ensure only genuine savings are deducted, that costs which continued or which the business was contractually committed to are not wrongly treated as saved, and that the savings analysis is accurate rather than a blunt assumption. Identifying the real savings honestly and documenting them, rather than overstating the loss and having the adjuster find the savings, keeps the claim credible.

Trends

The third recurring dispute is trends: the adjustment to the but-for figure for the circumstances that would have affected the business anyway, regardless of the damage. The trends clause adjusts the projection so the claim reflects what the business would actually have achieved, which can cut both ways. An insurer may argue that the market was declining, that the business was losing share, or that a downturn would have reduced turnover regardless, so the but-for figure should be lower. The policyholder may argue that a growing market, a new contract or an expansion would have raised turnover, so the but-for figure should be higher. The trends dispute is resolved by evidence: the order book, the market data, the contracts, the historical growth, all of which support a particular view of what the business would have done. The side with the better evidence on trends shapes the projection, which is why the trends evidence is assembled early and argued deliberately.

A large BI claim is run, not merely submitted, and the policyholder that manages the process actively reaches a better and faster settlement than one that reacts to the adjuster.

The sequence that works on a large BI claim is deliberate.

1. Notify and engage immediately. Notify the insurer promptly, start the BI claim file on day one, and engage the broker and, on a large loss, dedicated claim-preparation support early, so the quantification is built from the start rather than reconstructed later.
2. Establish the policy framework. Confirm the indemnity period, the gross-profit definition, the ICOW and additional-ICOW provisions, the sum insured and any claim-preparation-costs extension, so the claim is built within the actual cover rather than a misremembered version of it.
3. Mitigate and document. Take reasonable steps to reduce the loss, restart operations, source temporary capacity, retain customers, and document the increased costs and their mitigation rationale, because mitigation is a policy duty and well-documented ICOW is a recoverable part of the claim.
4. Build and present the quantification. Construct the loss from the financials and the evidenced but-for projection, identify the savings honestly, support the trends adjustment, and present a well-built number that the adjuster can test but not dismiss.
5. Negotiate on evidence. Work the differences with the adjuster on the gross-profit rate, the projection, the savings, the trends and the ICOW through evidence and argument, narrowing to a settlement that reflects the policy and the facts.
6. Use interim payments. On a large loss, seek interim payments on account against the agreed elements of the claim, so the business has cash flow while the final quantification is settled, rather than waiting months for a single payment.

A fair BI settlement is the product of a well-prepared claim, built on the right policy mechanics, evidenced in the financials, supported by dedicated quantification, and negotiated on the facts. That preparation depends on understanding exactly how the BI cover responds, the indemnity period, the gross-profit definition, the ICOW and additional-ICOW provisions, the trends and savings treatment, because the claim is built within those terms and they vary across wordings. Sarvada gives commercial insurance brokers structured, searchable access to insurer policy wordings, so the BI section a client is claiming under can be read precisely on its indemnity period, gross-profit basis, increased-cost provisions and trends and savings clauses, and the claim built and advocated within the actual cover. Request Access to bring that wording-level depth to your large-loss claim preparation and advocacy.