Business Interruption Coverage Calculator
Calculate the appropriate business interruption insurance coverage based on revenue, profit margin, and expected recovery timeline.
About this calculator
This calculator estimates how much business interruption (BI) coverage a business might need to survive a covered loss, and projects a rough premium for that coverage. It starts from Annual Revenue and Gross Profit Margin to find Monthly Gross Profit, then multiplies that by Estimated Recovery Time to get Projected Lost Profit -- the income the business would lose while it can't operate normally. Continuing Fixed Expenses adds back roughly 60% of monthly operating expenses for the same recovery period, reflecting that many costs (rent, some payroll, insurance) keep accruing even when a business is shut down, while variable costs like inventory purchases typically don't. Extra Expense Budget is added directly on top for costs incurred specifically to minimize downtime, such as a temporary location or rented equipment.
Waiting Period then reduces the total: it works like a deductible period during which the business bears its own losses before coverage begins, so a longer waiting period lowers Recommended Coverage. Estimated Monthly and Annual Premium apply a flat 3% rate to the calculated coverage amount as a rough planning figure -- real BI premium rates vary widely (commonly cited as roughly 2-5% of coverage, but ultimately set per policy by the underwriting insurer) based on industry, location, building construction, and claims history, so treat the premium figures here as a ballpark starting point for budgeting conversations, not a quote. This tool does not model coinsurance penalties for underinsuring, a specific policy's actual indemnity period limit, or extended-period-of-indemnity provisions that some policies add beyond the physical repair period.
Financial Disclaimer
This calculator is for educational purposes only and does not constitute financial advice. Results are estimates based on the inputs provided. Consult a qualified financial advisor before making investment or financial planning decisions.
Inputs
Results
Recommended Coverage
$456,666.67
≈ 11 Teslas
How to Use This Calculator
- Enter your business's annual gross revenue and annual operating expenses.
- Set your gross profit margin as a percentage of revenue.
- Enter the estimated recovery time in months and any extra expense budget for minimizing downtime.
- Set the waiting period, in days, before coverage begins (similar to a deductible).
- Review the recommended total coverage needed, along with projected lost profit, continuing fixed expenses, and monthly revenue at risk.
- Check the estimated monthly and annual premium based on the calculated coverage amount.
How the result changes with Estimated Recovery Time
| Estimated Recovery Time | Recommended Coverage |
|---|---|
| 3 | $251,666.67 |
| 4.5 | $354,166.67 |
| 9 | $661,666.67 |
| 15 | $1,071,666.67 |
What each input means
- Annual Revenue
- Your business's annual gross revenue.
- Annual Operating Expenses
- Total annual operating expenses including payroll, rent, utilities.
- Gross Profit Margin
- Your gross profit as a percentage of revenue.
- Estimated Recovery Time
- How long it would take to fully recover operations after a loss.
- Extra Expense Budget
- Additional costs to minimize downtime (temporary location, equipment rental).
- Waiting Period
- Days before coverage kicks in (like a deductible). Typically 24-72 hours.
How this is calculated
Worked example, using the default values
- Identify Input Parameters6 parametersAnnual Revenue = 1000000, Annual Operating Expenses = 700000, Gross Profit Margin = 40, Estimated Recovery Time = 6, Extra Expense Budget = 50000, Waiting Period = 3 = 6 input(s) provided
- Calculate Recommended CoverageRecommended Coverage456666.67 = $456,666.67
- Calculate Projected Lost ProfitProjected Lost Profit200000 = $200,000
- Calculate Continuing Fixed ExpensesContinuing Fixed Expenses210000 = $210,000
Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Why does a longer Waiting Period reduce Recommended Coverage?
Waiting Period functions like a deductible period -- the business absorbs its own losses during those initial days before coverage kicks in. This calculator subtracts a portion of monthly gross profit proportional to the waiting period length from the total coverage need, so a longer waiting period (which shifts more of the early loss onto the business itself) lowers the coverage the calculator recommends.
Is the 60% figure for Continuing Fixed Expenses a standard number?
No, it's this calculator's illustrative assumption about how much of a typical business's operating expenses (rent, core payroll, insurance) keep accruing during a shutdown versus expenses that stop (like inventory purchases tied to sales). The actual share of continuing versus stopped expenses varies significantly by business type and should be estimated from your own cost structure for a real coverage decision.
Is the estimated premium rate an actual quote?
No. This calculator applies a flat 3% rate to the calculated coverage amount as a rough planning estimate. Real BI premium rates are commonly cited in the 2-5% range but are ultimately set by the underwriting insurer based on your specific industry, location, building construction, and claims history -- get an actual quote from a licensed insurance producer before budgeting around this figure.
Does Waiting Period affect Projected Lost Profit?
No. Projected Lost Profit is calculated from Monthly Gross Profit and Estimated Recovery Time only. Waiting Period is applied as a separate deduction when computing Recommended Coverage -- it reduces the total coverage recommendation but doesn't change the underlying lost-profit projection itself.
What isn't this calculator accounting for?
It doesn't model a coinsurance penalty for underinsuring relative to your policy's stated coinsurance percentage, a specific policy's maximum indemnity period, or extended-period-of-indemnity add-ons some policies include for the time it takes revenue to fully recover even after physical repairs finish. It's a starting-point estimate, not a substitute for a coverage review with a commercial insurance broker.
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