Business interruption insurance covers the loss of income and additional expenses a business may face after an insured event stops or limits operations. It helps you stay financially stable while you recover from incidents like fires, floods, storm damage, or major theft.
While buildings, stock, machinery and contents insurance cover physical damage, business interruption insurance focuses on the financial impact of not being able to trade as normal. It can be essential for survival, especially for businesses with fixed overheads or seasonal income.
For a detailed walkthrough of how it works in real-life claims, see our Business Interruption Insurance Guide.
How does business interruption insurance work?
If your premises are damaged or access is restricted after an insured event (e.g. a fire or flood), a business interruption policy can:
- Replace lost gross profit or revenue
- Cover fixed running costs like rent, payroll, and utilities
- Fund additional expenses to help you stay operational (like temporary premises or outsourced services)
This cover allows you to keep paying staff, retain customers, and recover faster, without relying solely on savings or loans.
What does business interruption insurance cover?
Cover varies, but typically includes:
- Loss of gross profit or revenue – Based on pre-loss performance and adjusted for seasonal trends, growth forecasts, or planned expansions
- Fixed operating costs – Rent, utilities, business rates, and staff salaries
- Temporary relocation or equipment hire – Costs of setting up elsewhere during repairs
- Increased cost of working – Extra expenses to reduce downtime or maintain operations (e.g. outsourcing production, additional staff)
- Loss of rent – For landlords if a property becomes uninhabitable
Most policies only cover disruption caused by events already insured under your property policy. If the trigger isn’t listed there, your claim may not be valid.
What events trigger a business interruption claim?
Cover is usually linked to physical damage, denial of access, or certain external events. Common triggers include:
- Fire or explosion
- Flood or storm damage
- Burglary, vandalism, or major equipment theft
- Escape of water (e.g. burst pipes)
- Structural collapse or dangerous buildings
- Denial of access by local authority or emergency services
- Supplier failure (if specified)
- Infectious disease outbreaks (less common post-COVID, often excluded)
Always check your policy wording. Coverage for non-damage triggers (like denial of access or supply chain failure) may require specific extensions
How long does business interruption insurance last?
This depends on your indemnity period – the maximum time you’ll be covered for financial losses after an incident. Common indemnity periods include:
- 12 months
- 24 months
- 36 months or longer (for large or high-risk businesses)
Choosing the right indemnity period is crucial. If you underestimate the time it takes to fully recover, your cover could run out before your business is back to normal.
Example: Business interruption after a flood
A flood damages a bakery, destroying ovens and other critical equipment, forcing the business to close for 6 months. Business interruption insurance covers:
- Lost profit during closure
- Staff wages, despite the downtime
- Rent for a temporary kitchen space
- Extra transport costs to deliver products from the new location
Without this cover, the business might struggle to pay suppliers, retain staff, or stay afloat, even with property damage covered.
Do I need business interruption insurance?
If your business relies on physical premises, stock, or specialist equipment, or if you’d struggle to cover overheads during downtime, this cover is highly recommended.
It’s particularly important for:
- Retailers and high street businesses
- Manufacturers and logistics companies
- Hospitality and food businesses
- Landlords with commercial or mixed-use properties
- Offices with specialist systems or IT infrastructure
Even if you already have buildings and contents insurance, a serious incident could leave you unable to trade. Business interruption insurance bridges the gap and can be the lifeline that saves your business from disaster.
FAQ’s
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Is business interruption included automatically in commercial insurance?
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Not always. Some commercial combined packages include it as standard, but many offer it as an optional add-on. Always check your schedule and policy wording.
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How is a business interruption claim calculated?
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Insurers assess your gross profit or revenue based on your accounts, forecasts, and seasonal trends. They deduct any income you’ve still earned during the disruption and consider steps you’ve taken to reduce your losses.
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What’s not covered by business interruption insurance?
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Common exclusions include:
Losses due to uninsured events
Gradual losses or loss of reputation
Delays not caused by property damage
Losses beyond your indemnity period
Failure to mitigate the impact (e.g. refusing to relocate or adapt operations) -
What happens if I underestimate my indemnity period or turnover?
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You could be underinsured, meaning your claim won’t cover your actual losses. Always review figures with your broker or accountant and make sure your cover reflects your current risk.
