Business interruption insurance exists to restore an insured to the financial position they would have occupied had a covered peril not occurred. This deceptively simple principle underlies one of the most complex areas of property insurance claims adjustment, requiring practitioners to navigate accounting concepts, legal interpretation, and commercial reality simultaneously. The calculation of a business interruption loss demands precision, professional judgment, and a thorough understanding of how revenue, expenses, and the indemnity period interact to determine the final indemnity amount. Canadian professionals working with these claims must appreciate both the theoretical framework that governs coverage and the practical challenges that arise when applying policy language to actual business operations.
The foundation of business interruption coverage rests on the concept of indemnity, which in the context of income loss means compensating the insured for the net profit that would have been earned plus those continuing expenses that must be paid even while the business remains inoperative. This formulation appears across standard commercial property forms used throughout Canada, including the IBC Commercial Property Broad Form and various manuscript forms employed by insurers in different provinces. The Insurance Companies Act, as federal legislation governing insurance companies operating in Canada, establishes the regulatory framework within which these policies operate, while provincial insurance statutes such as the Insurance Act in Ontario, the Insurance Act in British Columbia, and the Insurance Act in Alberta govern the contractual relationship between insurers and insureds. Quebec's framework, governed by the Civil Code of Quebec, approaches insurance contracts through its distinct civil law tradition, though the practical operation of business interruption coverage remains substantially similar across all jurisdictions as of the date of authorship.