What is Overhead Rate?
The overhead rate allocates indirect business costs to projects or hours, revealing the true cost per billable hour.
What Is the Overhead Rate?
The overhead rate (also called the "indirect cost rate" or "burden rate") is the amount of your total business overhead divided by some measure of activity — typically billable hours or revenue. It tells you how much of your indirect costs are attributable to each unit of work, allowing you to price projects accurately and understand true project profitability. Every hour you bill carries not just your direct labor value but a share of your overhead — the rent you pay for your office, the software you use, the accountant who does your taxes, the insurance that protects you. The overhead rate quantifies that cost. The Hidden Cost Per Hour: Most freelancers know their direct costs (subcontractors, project expenses) but forget that each billable hour also 'costs' them their share of business overhead. If your overhead is $25,000/year and you bill 1,000 hours, each hour carries $25 of overhead that must be covered by your revenue.
Calculating the Overhead Rate
Step 1: Calculate Total Annual Overhead Gather all your annual indirect costs (costs that exist because your business exists, not because of any specific project): | Overhead Item | Annual Cost | |--------------|------------| | Business insurance | $2,400 | | Accounting and legal | $3,000 | | Software subscriptions | $1,800 | | Internet and phone | $1,200 | | Co-working/membership | $4,800 | | Marketing | $2,400 | | Professional development | $800 | | Business licenses | $300 | | Bank fees | $300 | | Total Overhead | $17,000 | Step 2: Determine Billable Hours Calculate your realistic annual billable hours: - Total hours available (2,080 per year for one person) - Minus admin, marketing, prospecting, etc. (~30-40%): ~1,250-1,450 billable hours - Use your realistic number, not optimistic Billable Hours = 1,300 hours/year Step 3: Calculate Overhead Rate Per Hour Overhead Rate = $17,000 ÷ 1,300 hours = $13.08/hour This means every billable hour needs to generate $13.08 just to cover overhead — before any profit.
The Full Hourly Rate Calculation
Now you can calculate your true minimum rate: | Component | Calculation | Amount | |-----------|------------|--------| | Your desired salary | $85,000/year | | | Self-employment tax | $85,000 × 15.3% | $13,005 | | Total cost of you | $98,005 | | | Your hourly cost | $98,005 ÷ 1,300 hours | $75.39/hour | | Plus overhead rate | per hour | $13.08/hour | | Total cost per hour | | $88.47/hour | | Desired profit margin (20%) | $88.47 ÷ 0.80 | $110.59/hour | You need to bill at least $111/hour to cover your costs and earn a 20% profit.
Overhead Rate as a Percentage of Revenue
You can also express overhead as a percentage of revenue: Overhead Rate (Revenue Basis) = Total Overhead ÷ Total Revenue × 100 Example: $17,000 overhead ÷ $130,000 revenue = 13.1% Every dollar of revenue, 13.1 cents goes to overhead. This is useful for quick pricing estimates: if you know a project's revenue, multiply by (1 - overhead rate - desired profit margin) to get your maximum direct cost budget.
Why Overhead Rate Matters for Freelancers
Accurate Minimum Pricing Knowing your overhead rate prevents underpricing. If you know your cost per hour is $88 and your target is $110, you can't accept $75/hour work and still hit your goals. Project Profitability Analysis When you track time on projects, you can calculate whether each project actually covered its allocated overhead — not just its direct costs. Business Health Indicator If your overhead rate is rising faster than your revenue, your business efficiency is declining. If revenue is growing faster than overhead, you're becoming more efficient.
Ways to Reduce Your Overhead Rate
Increase Billable Hours If you can bill 1,500 hours instead of 1,300, your overhead per hour drops from $13.08 to $11.33 — without changing anything else. Reduce Overhead Costs Negotiate software subscriptions, find cheaper co-working, eliminate unused services. Raise Rates Higher revenue with the same overhead = lower overhead as percentage of revenue.
Common Freelancer Overhead Rate Mistakes
Including Direct Costs in Overhead If a cost is directly traceable to a project (a subcontractor, specific software for one project), it's a direct cost — not overhead. Don't pad overhead with project-specific expenses. Underestimating Non-Billable Time If you think you're billing 1,500 hours but actually bill 1,200, your actual overhead rate is much higher than calculated. Not Updating Annually Overhead changes every year. Update your overhead rate calculation annually to reflect current costs and realistic billable hours.
Bottom Line
The overhead rate is one of the most important numbers a freelancer can calculate — it's the cost per hour of keeping your business running that must be covered by every billable hour. Without knowing this number, you can't know if your rates are sufficient. Calculate your overhead rate once, and use it every time you set pricing or evaluate whether a project is truly profitable.