Business Overhead Calculator
Break down your total overhead and see the true hourly cost of running your business.
What Is Business Overhead?
Business overhead represents all the ongoing costs of running your company that are not directly tied to producing a specific product or delivering a specific service. Think of overhead as the cost of keeping the lights on, the doors open, and the team paid -- regardless of whether you make a single sale that month. It includes rent, utilities, insurance, administrative salaries, office supplies, software subscriptions, accounting fees, and equipment depreciation. Understanding your overhead is critical because it determines your minimum revenue threshold for survival and directly impacts your pricing. If your overhead is $16,800 per month and you have 160 billable hours, your hourly overhead cost is $105. That means before you earn a single dollar of profit, every billable hour must cover $105 just for the privilege of existing as a business. Your billing rate must exceed this number significantly to generate profit. The overhead-to-revenue ratio is perhaps the most important metric here. A healthy ratio varies by industry: professional services firms typically target 25-40%, while retail and manufacturing often run 15-25%. If your overhead exceeds 50% of revenue, the business model itself may be structurally unprofitable without significant changes.
How to Use This Calculator
Enter Your Fixed Costs
Input each major overhead category: rent, utilities, insurance, and non-production payroll. Include administrative staff, office managers, and any salaried employees not directly generating revenue.
Set Your Billable Hours
Enter the total number of hours your team spends on revenue-generating work each month. For a solo consultant working 40-hour weeks, realistic billable hours are typically 100-120 (not 160) after accounting for admin, marketing, and downtime.
Input Monthly Revenue
Enter your average monthly revenue so the calculator can show overhead as a percentage of revenue -- your overhead ratio.
Review Your Cost Structure
The per-hour overhead rate tells you the minimum each billable hour must earn before contributing to profit. The revenue percentage reveals whether your overhead is lean or bloated.
Key Concepts
Fixed Overhead
Costs that remain constant regardless of business activity: rent, insurance premiums, base utility charges, salaried admin staff, and annual software licenses.
Variable Overhead
Overhead that fluctuates with activity level but is not directly tied to a product: commission-based admin, usage-based software, office supplies, and travel expenses.
Overhead Rate
The ratio of overhead costs to direct labor costs or revenue. An overhead rate of 150% means for every $1 of direct labor, the business spends $1.50 on overhead. Used heavily in job costing and government contracting.
Utilization Rate
The percentage of available hours that are actually billable. A utilization rate of 75% means 25% of paid time goes to non-billable activities. Most professional services firms target 65-80%.
Expert Insights
The 60% Rule for Service Businesses: In professional services, your total cost (overhead + direct labor) should not exceed 60% of revenue. That leaves 40% for profit, taxes, and reinvestment. If you are above 60%, either your billing rates are too low or your overhead is too high. Start by auditing subscriptions and software -- most businesses have 15-25% redundant SaaS spend.
Remote Work Overhead Reduction: Companies that shifted to remote or hybrid models reduced overhead by 20-35% on average, primarily through office space reduction. But hidden costs appeared: increased cybersecurity spend, home-office stipends, collaboration tools, and reduced utilization from distractions. Net savings are typically 10-20%, not the 30%+ that headlines suggest.
Pricing Implications: If your overhead per billable hour is $105, and your direct labor cost is $45/hour, your minimum billing rate just to break even is $150/hour. Add your target profit margin (say 20%) and your billing rate needs to be at least $188/hour. Most underpriced businesses have never done this math.
Frequently Asked Questions
This calculator provides estimates for educational purposes only. Actual results depend on your specific business circumstances, market conditions, and accounting methods. Consult a qualified CPA or business advisor before making major financial decisions.
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A business line of credit can smooth overhead costs during slow months.
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