A business interruption policy pays for time. A continuity plan buys time. When the two are owned by different departments that rarely speak (insurance by finance or risk, continuity by operations or IT), companies end up paying twice for some exposures and holding others that are neither insured nor planned for.
This briefing explains how business interruption (BI) cover works, where it reliably stops, and how continuity data should drive the limits you buy. It is a practitioner's overview, not legal or insurance advice. Wordings vary widely, and your broker and coverage counsel should read your actual policy.
The moving parts
BI is usually written as part of a commercial property policy. Its core promise is narrow: if covered property suffers direct physical loss or damage from a covered cause, the policy replaces the income you lose and the extra costs you incur while the property is restored. Almost everything else is a modification of that promise.
| Term | What it does | What to check |
|---|---|---|
| Physical loss trigger | Cover starts only with direct physical loss of or damage to property from a covered cause | Which perils are excluded (flood and earthquake often are) |
| Business income | Net income you would have earned plus continuing normal operating expenses, including payroll as the policy defines it | Whether all payroll is covered, or only key staff for a limited time |
| Period of restoration | The time it should take, with reasonable speed, to repair or replace the property | It runs on a theoretical rebuild time, not your actual reopening date |
| Waiting period | Hours or days at the start of each loss that you absorb yourself | Widely used standard forms apply 72 hours to business income |
| Extra expense | Costs to avoid or reduce the shutdown: temporary premises, overtime, expedited shipping, rented equipment | Whether the limit matches your continuity strategy |
| Extended period of indemnity | Income cover after reopening while customers return | Standard forms include a short extension (often 60 days); longer is extra |
| Contingent BI (dependent properties) | Loss caused by damage at a supplier's or customer's premises | Named versus unnamed dependencies; sublimits; tier-two coverage |
| Civil authority | Loss when authorities bar access because of damage to nearby property | Distance limits (often one mile) and short time caps |
| Ingress/egress | Loss when access is physically blocked by nearby damage, with no order | Often an endorsement with a sublimit |
| Utility service interruption | Loss from damage to off-site power, water or communications property | Whether overhead lines are included; physical damage to the utility is required |
| Coinsurance | A penalty if the limit is too low relative to a year's business income | Agreed-value or monthly-limit options that remove the penalty |
Two of these deserve a closer look. The period of restoration is measured by how long rebuilding should take, which means delays from permits, contractor shortages after a regional disaster or long-lead equipment become arguments with the adjuster rather than automatic cover. And the waiting period means short outages are self-insured. If your recovery time objective for a site is 48 hours, a 72-hour waiting period means the policy will never pay for a loss your continuity plan handles as designed.
Why most COVID-19 claims failed
When closure orders shut restaurants, retailers and offices in spring 2020, thousands of businesses filed BI claims. The great majority lost, including in federal appeals courts across the country and several state supreme courts.
The reasoning came back to the trigger. Courts largely held that "direct physical loss of or damage to property" requires a tangible alteration of the property or a physical deprivation of it. A virus that can be cleaned off surfaces did not qualify, and neither did a government order limiting how a building could be used. Civil authority claims failed for a related reason: the orders responded to a public health threat, not to physical damage at a nearby property. Many policies also carried a virus or bacteria exclusion, a standard endorsement insurers introduced in the mid-2000s after SARS.
The lesson for continuity planners is structural rather than legal. Property BI is a property-damage product. Exposures that involve no physical damage fall outside it or need specialized cover:
- pandemics and public health closures
- cyber incidents and software failures, which belong to cyber policies
- supplier failures without physical damage (insolvency, labor disputes, export controls)
- wide-area utility failures where no utility property was damaged
For those scenarios the continuity plan, the balance sheet or a specialized product carries the risk. Our briefing on pandemic and infectious-disease continuity planning covers the planning side of the scenario that tested this most.
Let the business impact analysis set the numbers
Brokers often size BI limits from last year's financial statements and a 12-month assumption. The business impact analysis has better information, if anyone shares it.
Limits. Use projected business income for the policy year plus the full indemnity period, adjusted for seasonality. A loss that runs through your peak quarter costs more than an average one.
Indemnity period. Build it from the BIA's worst credible scenario for each major site: time to clear and assess the damage, permits and design, lead times for long-lead equipment (some specialized machinery and large electrical gear can take a year or more), installation and testing, then the time customers take to come back.
Extra expense. Price your continuity strategies. Activating an alternate site, paying a contract manufacturer, running overtime and expediting freight are extra expense. If the plan relies on a strategy, the limit should cover it.
Contingent BI. Use the supplier and customer map. Single-source suppliers and concentrated customers are the dependencies to name, and tier-two suppliers are often where the surprises are. Our guide to mapping third-party and supply chain dependencies shows how to build that map.
A worked example
Take a hypothetical single-plant food manufacturer with about $12 million of annual business income, 40 percent of it earned in the fourth quarter. Its BIA's worst credible scenario is a fire on the main production line. Engineering estimates four months for permits and design, eight months for replacement equipment and installation, then around three months for large customers to return.
That is 15 months of exposure, crossing a peak season. A $12 million limit sized on a 12-month assumption looks adequate on paper and is not: the outage exceeds a year, includes the most valuable quarter, and the customer ramp-up outlasts a 60-day extension. The BIA points to a higher limit and a longer extended period of indemnity. It also points to an extra expense limit sized for the continuity strategy, co-packing with a contract manufacturer while the line is rebuilt. If that strategy works, the income loss shrinks and the extra expense grows, which is why the two limits should be set together.
How continuity work shows up in underwriting
Underwriters estimate how large and how long a loss could be. Continuity evidence speaks directly to the "how long": tested recovery plans, documented alternate production, dual sourcing, spare critical components on hand, and pre-arranged contracts for temporary capacity.
Put that evidence in the renewal submission: a plan summary, the date and results of the last exercise, and the dependency map for critical suppliers. It will not always lower the premium. It can influence terms, deductibles, sublimits and how much capacity insurers are willing to offer, which matters most when the market is hard. When you build the case for continuity spending, treat insurance effects as a supporting argument rather than the main one; our article on building a resilience budget the CFO will approve explains why.
Coverage and gaps by scenario
| Scenario | Typical property BI response | Where the gap usually is |
|---|---|---|
| Fire at your own facility | Covered, subject to limits and waiting period | Ramp-up beyond the extension; rebuild delays |
| Key supplier's plant floods | Contingent BI if flood is covered and the supplier qualifies | Sublimits; unnamed or tier-two suppliers; flood exclusions |
| Your own site floods | Often excluded or sublimited; NFIP flood policies do not cover BI | Separate flood cover, or the plan carries it |
| Regional power failure | Utility service cover only if utility property was physically damaged | Grid events without damage; overhead line exclusions |
| Ransomware | Not property BI; cyber policy if purchased | Cyber waiting periods (often hours) and sublimits |
| Vendor software or cloud outage, such as the CrowdStrike Falcon outage of 19 July 2024 | Not property BI; cyber "system failure" or dependent cover if purchased | Many cyber forms cover only security failures, not errors |
| Pandemic or closure order | Generally not covered | Plan and balance sheet carry it |
| Street closed after nearby damage | Civil authority or ingress/egress, briefly | Distance and time caps |
Documenting a claim
The continuity team's incident records are the claim's raw material. Set this up before you need it:
- Notify early. Tell the broker and insurer promptly and diary the proof-of-loss deadline.
- Open cost codes on day one. Every incident-related expense gets its own code so extra expense can be proven.
- Record the damage. Photos and video before cleanup where it is safe, while still taking reasonable steps to limit further loss.
- Keep the decision log. Expensive choices are easier to recover when the log shows why they reduced the overall loss.
- Pull the financial history. Two to three years of monthly sales, margins, budgets and forecasts, plus evidence of seasonality.
- Track the restart. Partial production, lost orders and customers who have not returned.
- Consider specialist help. Forensic accountants or a public adjuster on complex losses; some policies include a sublimit for claim preparation costs.
A BI and continuity worksheet
A one-page worksheet, completed jointly by risk, finance and continuity before each renewal:
- Exposure: business income by site and product line; seasonality; growth assumptions.
- Scenarios: worst credible event per major site from the BIA; restoration time; customer ramp-up.
- Strategies: continuity strategies per scenario and their cost (the extra expense need).
- Dependencies: critical suppliers, customers, utilities and cloud services; which are named in the policy.
- Terms: limits, sublimits, waiting periods, indemnity periods, exclusions, coinsurance basis.
- Gaps: each gap marked accept, mitigate or transfer, with a named approver.
- Claim readiness: contacts, cost-code procedure, where financial records live.
FEMA's Ready Business materials are a reasonable starting point for the planning side if your program is new.
Frequently asked questions
Does business interruption insurance replace a continuity plan?
No. BI replaces lost income after physical damage, subject to waiting periods, limits and exclusions. It does nothing for customers who leave during an outage, losses with no physical damage, or the first days of most events. A continuity plan shortens the outage; insurance helps fund it.
How long should the indemnity period be?
Long enough to cover the worst credible rebuild plus the time customers take to return. Build it from the BIA: permits, design, equipment lead times, installation and ramp-up. Many companies find 12 months is too short once long-lead equipment and seasonality are counted.
Does BI insurance cover a cyberattack or a cloud outage?
Property BI generally does not, because there is no physical damage. Cyber policies can cover business interruption from a security incident, and some extend to non-malicious system failures and outages at vendors. Check the waiting period, sublimits and whether "system failure" is included.
Why didn't BI policies pay for COVID-19 closures?
Most courts held that the virus and the closure orders did not cause direct physical loss of or damage to property, which the policies required. Many policies also had a virus exclusion. Civil authority claims failed because the orders were not issued in response to physical damage nearby.