Business Income Coverage Calculator
What Business Income Insurance Covers
Business income (BI) insurance — sometimes called business interruption insurance — replaces the revenue your business loses when a covered physical loss forces you to suspend or reduce operations. If a fire damages your building and you cannot serve customers for three months while repairs are made, BI coverage pays the gross profit you would have earned during that period, plus your continuing fixed expenses — rent, loan payments, utilities, and payroll for key employees you need to retain.
BI coverage is not standalone; it is typically included in a Business Owners Policy (BOP) or added as an endorsement to a commercial property policy. The coverage only applies when the income loss is caused by a covered physical peril — fire, wind, vandalism, burst pipes — not a general economic slowdown or loss of a major customer.
The Three-Step BI Coverage Calculation
Sizing your BI limit correctly requires three inputs:
- Step 1 — Monthly Gross Profit: Take your annual revenue and subtract the variable costs that stop when operations stop (cost of goods sold, variable labor, delivery costs). Divide by 12. This is the income stream your business needs to replace.
- Step 2 — Monthly Fixed Expenses: Add the obligations that continue even when your doors are closed: lease or mortgage payments, loan service, insurance premiums, utilities, and salaried staff you cannot afford to lose. Divide by 12.
- Step 3 — Months to Rebuild: Estimate how long it would realistically take to repair or replace your physical location and resume normal operations. Multiply Steps 1 and 2 by this number to arrive at your recommended BI limit.
Typical Rebuild Timelines by Business Type
Rebuild times vary significantly by industry and building complexity. Retail and restaurant spaces in strip centers often rebuild in 6–9 months. Medical and dental offices with specialized plumbing and equipment frequently take 12–18 months. Custom manufacturing facilities or multi-story commercial buildings can require 18–36 months. If you lease your space, also consider the time to negotiate a new lease or find an alternative location if your landlord does not rebuild.
Extended Period of Indemnity and Extra Expense
Two endorsements significantly enhance a standard BI policy. The extended period of indemnity endorsement continues coverage for a set period (commonly 30–360 days) after your business physically reopens, recognizing that revenue often does not return to pre-loss levels the day the doors reopen. The extra expense endorsement covers costs above your normal operating expenses that you incur to keep the business running during restoration — temporary location rental, expedited shipping, or equipment rental.
How TCDS Right-Sizes Your BI Limit
Many businesses are significantly underinsured for business income loss because their BI limit was set at policy inception and never revisited as the business grew. The calculator gives you a baseline estimate using your current revenue and cost structure. A TCDS commercial lines agent will review the result alongside your commercial property policy, identify any gaps between your estimated limit and your actual exposure, and recommend the right combination of BI coverage, extended period of indemnity, and extra expense for your operation.
Get a free commercial insurance review from TCDS Insurance Agency. We work with business owners across Alabama, Georgia, and Tennessee to make sure a temporary setback does not become a permanent closure.
Frequently Asked Questions
What is business income insurance?
Business income coverage (also called business interruption) replaces the profit and pays the ongoing fixed costs your business loses when a covered event, like a fire or storm, forces you to close temporarily. It keeps rent, payroll, loan payments, and lost net income flowing while you rebuild, so a covered shutdown does not become a permanent closure.
How much business income coverage do I need?
A solid estimate is your annual gross profit (revenue minus variable costs) plus your fixed operating expenses, multiplied by the number of months it would realistically take to rebuild and reopen. This calculator walks through it. Many small businesses underinsure by assuming a 3-month recovery when a serious fire can take 9 to 12 months.
Does business income coverage include payroll?
It can, and usually should. Most policies let you include payroll so you can keep key employees during the shutdown instead of losing them to competitors. Some owners limit ordinary payroll to lower the premium, but that gamble can cost you your trained staff. We help you set the payroll provision to match your business.
What is the restoration period?
The restoration period is the window your business income coverage actually pays for. It starts after a short waiting period (often 48 to 72 hours) and runs until your business is restored, up to your policy limit. Choosing too short a recovery estimate is the most common reason a claim runs out before the doors reopen.