Author: Charles Amodio

When a business suffers a covered loss that interrupts its operations—such as a fire, storm, or other insured peril—business interruption insurance (often called business income insurance) is designed to reimburse the insured for lost income and continuing expenses during the period their operations are suspended. A central issue in preparing and evaluating these claims is how revenue and expenses are recognized, and this is where cash basis vs. accrual basis accounting becomes critically important.

What Are Cash and Accrual Accounting?

Cash basis accounting records revenue when cash is received and expenses when cash is paid out. This method reflects actual cash flows but can give a distorted picture of economic activity because it ignores amounts earned but not yet collected and costs incurred but not yet paid. 

Accrual basis accounting records revenue when it is earned and expenses when they are incurred, regardless of the timing of cash flows. It adheres to the matching principle, aligning costs with the associated revenues in the same reporting period, and provides a more accurate picture of a company’s financial performance. 

Why Accrual Accounting Matters in Business Interruption Claims

For business interruption claims, the objective is to estimate what a business’s income and expenses would have been “but for” the interruption. Simply tallying cash receipts and payments during the loss period often yields misleading results, because businesses frequently perform services or make sales that are paid weeks or months later. Similarly, expenses may be incurred before they are actually paid. 

Further, lost income in business interruption claims needs to be calculated using the accrual basis of accounting rather than the cash basis—so that sales/receipts and expenses/disbursements are matched and reflect the true economic activity of the business. Cash-basis calculations often produce improper and unjust results because they fail to capture receivables and payables associated with the period of loss. 

In practical terms, accrual accounting ensures:

• Revenue reflects earned income during the period the business was forced to suspend operations, even if the cash was collected later.
• Expenses reflect obligations incurred to generate revenue, even if cash payments occur outside the interruption period.
• The “but-for” scenario (what revenue would have been) is measured on a consistent basis with how normal operations were conducted historically. 

Insurance Policy and Accounting Method

While policy language typically defines the scope of recoverable losses (e.g., net income before taxes plus continuing normal operating expenses), the method of accounting becomes central when quantifying those items. Insurers and courts generally expect lost profits and continuing expenses to be quantified on an accrual basis, because it more closely aligns with economic performance and historical financial reporting.

Carriers sometimes begin with financial statements prepared by the insured, which may be on a cash basis. However, a claimant’s expert can demonstrate that an accrual basis more accurately reflects the business’s damages, and insurers often adjust accordingly. 

Common Challenges and Adjustments

Some of the key issues that arise when applying cash vs. accrual accounting in business interruption claims include:

• Receivables and payables: Cash statements ignore uncollected revenues and unpaid costs, potentially understating both lost income and continuing expenses.
• Saved expenses: During a shutdown, a business may avoid certain variable costs (e.g., cost of goods sold). These saved expenses need to be deducted from lost revenues using accrual figures to avoid double-counting. 
• Period of restoration: The chosen accounting basis affects how the period of loss is defined and measured; the accrual basis matches activities within that defined period. 

Role of Forensic Accountants

Given these complexities, business interruption claims frequently involve forensic accountants who:

• Convert cash-basis records to accrual figures.
• Reconstruct historical performance on an accrual basis.
• Estimate “but-for” revenues and expenses using consistent accounting treatment.
• Identify continuing vs. non-continuing costs under policy terms. 

Summary

Accrual accounting is generally the appropriate method for analyzing business interruption claims because it aligns revenues and expenses with the periods in which they are earned and incurred. Cash basis accounting, while simpler, can distort the measurement of lost profits and continuing expenses because it fails to recognize receivables and payables connected with the period of loss. Insurers, experts, and courts tend to favor accrual-based measures when quantifying damages, offering a more accurate and equitable basis for settlement. 

When a property becomes uninhabitable due to damage from fire, storms, water, or other covered perils, landlords may lose out on rental income. Fortunately, many insurance policies include Loss of Rent or Business Income coverage, which reimburses property owners for the rental income they would have earned during the period of restoration. Calculating lost rental income accurately is crucial for a successful insurance claim. Here are some points to consider when evaluating a lost rental income claim.  

1. The Insurance Policy

Before calculating your claim, review your insurance policy to determine:

• Coverage Limits: The maximum amount the insurer will pay.
• Covered Perils: Events for which you are eligible to file a claim.
• Period of Restoration: The reasonable time needed to repair or rebuild the property.
• Waiting Period: Some policies include a 24–72 hour waiting period before coverage kicks in.

2. The Period of Restoration

The period of restoration begins when the damage occurs and ends when the property is reasonably restored to its pre-loss condition, not necessarily when repairs are completed. This period must be:

• Reasonable and Necessary: Based on typical construction timelines.
• Documented: Through contractor estimates, permits, and repair schedules.

Insurers often require detailed evidence to support the claimed duration.

3. Identify Monthly Rental Income

You must determine how much rent you were collecting or expected to collect. Consider:

• Lease Agreements: Show actual rental rates and tenant responsibilities.
• Rent Rolls: Details the rental income and occupancy history per unit. 
• Comparable Market Rent: If the property was vacant, use market analysis or appraiser reports to estimate potential income.

Be sure to exclude non-rent payments like utility reimbursements unless otherwise specified in your policy.   

4. Calculate Gross Rental Income Loss

Use the following formula:

Lost Rental Income = Monthly Rent x Number of Months Property is Uninhabitable

Example:

• Monthly rent: $2,000
• Property uninhabitable for 6 months
• Lost rental income: $2,000 x 6 = $12,000

5. Deduct Expenses Saved During the Loss Period

Subtract any expenses you did not incur because the property was vacant. These may include:

• Utility costs (if landlord-paid)
• Maintenance or cleaning services
• Property management fees (if charged per unit or based on occupancy)

This yields your net lost rental income.

Net Loss = Gross Rental Income – Expenses Saved

6. Provide Supporting Documentation

A well-documented claim is less likely to be delayed or denied. Include:

• Lease agreements or rent rolls
• Monthly profit and loss statements
• Prior year income statements or tax returns
• Payroll reports
• Communications with tenants (e.g., notices to vacate)

Conclusion

Calculating lost rental income for insurance claims involves more than simply multiplying rent by the number of months the property is vacant. By carefully documenting income, understanding the policy, and factoring in saved expenses, you can present a well-founded claim.

For further information, please contact the experts at FAZ Forensics.