Agency Overhead Rate Calculator
An agency overhead rate calculator takes your actual indirect cost line items — rent, software, non-billable staff, accounting, marketing — and converts them into your overhead rate: the percentage of direct labour cost that overhead represents. This is the number the overhead and profit calculator needs as an input. Most agencies guess it. This tool calculates it.
Agency Overhead Rate Calculator
Add up your indirect costs and get your overhead rate as a percentage of direct labour.
What counts as direct labour?
Include only the time staff spend on billable work. A team member who is 80% billable: count 80% of their loaded cost. A project manager who is 50% billable: count 50%. Exclude purely non-billable staff — they go in overhead below.
Overhead cost line items
Overhead rate (% of direct labour)
37%
$3,550 overhead on $9,600 direct labour per month.
Typical
Typical range for a small agency. Feed this into the markup calculator to see your minimum billable rate.
Summary
- Direct labour
- $9,600
- Total overhead
- $3,550
- Total cost
- $13,150
Use this number in the markup calculator
Your overhead rate is the input the overhead and profit calculator needs to set your minimum billable rate.
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How to read your result
The primary output is your overhead rate as a percentage of direct labour cost. A rate of 35% means for every $100 you spend on billable team time, you spend another $35 running the business. That rate feeds directly into your markup calculation — it determines the floor below which any billable rate loses money.
The verdict is not about whether your overhead is "too high" in absolute terms. It is about whether your current billable rate covers it. A 60% overhead rate is sustainable if your gross margins are 70%. The same rate is a problem if your gross margins are 40%.
How the overhead rate is calculated
Add up all indirect costs for the month — every cost the business incurs regardless of how many clients you have. Divide by monthly direct labour cost. That ratio is your overhead rate. The formula: overhead rate = total overhead ÷ direct labour cost. It is the same ratio construction firms, accountants, and project-based businesses have used for a century.
Once you have the rate, feed it into the overhead and profit calculator to find the markup needed to cover overhead and hit your target profit. Compare the result to your current rates using the agency profit margin calculator.
A worked example
A five-person digital studio. Direct labour cost (four billable team members, fully loaded, 80% of their time billable): $9,600/month. Overhead: coworking space $800, SaaS tools $400, one part-time ops person $1,200, accountant + insurance $350, owner non-billable time $500 (notional), business development $300. Total overhead: $3,550.
- Overhead rate: $3,550 ÷ $9,600 = 37% — typical band
- For every $1.00 of direct labour, the studio needs to recover $1.37 before earning any profit
If the studio targets a 20% net profit margin, required monthly revenue = ($9,600 + $3,550) ÷ (1 − 0.20) = $16,438. That is the minimum revenue that covers costs and hits the margin target. Enter 20% in the optional target margin field to see this calculated automatically.
Why agencies underestimate their overhead rate
Three things consistently get undercounted. First, owner time: agency owners typically spend a significant portion of their hours on non-billable work — business development, admin, managing the team. That time has a real cost even if it's not on the payroll.
Second, software: counted individually each subscription is invisible; summed monthly they are often $200–$500. Third, the non-billable staff share: a project manager who is half-billable has their billable cost in direct labour and their non-billable cost in overhead — most agencies count the whole person in only one bucket.
Frequently asked questions
What is an agency overhead rate?+
An agency overhead rate is the ratio of indirect (overhead) costs to direct labour cost, expressed as a percentage. It tells you how much overhead the business incurs for every dollar or pound of billable work delivered. A 35% overhead rate means every $100 of direct labour carries $35 of overhead that must also be recovered through billing.
What is a typical overhead rate for a small agency?+
Most agency-finance guidance places the typical range for small agencies at 25–40% of direct labour cost. Agencies with physical office space, non-billable staff, or significant business development costs run higher. Fully remote solo operators can run as low as 10–15%.
What is the formula for calculating overhead rate?+
Overhead rate (%) = total indirect costs divided by direct labour cost, multiplied by 100. For example: $3,500 of monthly overhead divided by $10,000 of monthly direct labour cost = 35%. This is the standard formula used in professional services and project-based businesses.
What costs count as overhead for an agency?+
Rent, shared software and subscriptions, non-billable staff (operations, admin, business development), accounting and legal fees, insurance, marketing costs, and any owner time that is not spent on billable client work. Pass-through costs billed directly to clients are not overhead.
Should I include my own salary as overhead?+
If you pay yourself a fixed salary regardless of revenue, yes — it is overhead. The most conservative approach is to include a market-rate owner salary so the margin numbers reflect what the business would need to pay someone to replace your non-billable functions.
How does overhead rate affect my billable rate?+
Your minimum billable rate must cover both direct labour cost and overhead. If your direct cost per hour is $50 and your overhead rate is 35%, you need to recover $67.50 per hour before earning any profit. The overhead and profit calculator takes this rate and solves for the full markup including a target profit margin.
How often should I recalculate my overhead rate?+
Annually at minimum when setting or reviewing pricing, and after significant changes: hiring, moving offices, major software changes, or substantially different work volume.
Next step
Plug your rate into the markup calculator
Once you have your overhead rate, the overhead and profit calculator uses it to find the minimum markup you need on direct cost to cover overhead and hit your target profit.
Know your overhead rate before you set your rates.
Ascend tracks time against every project, and invoices are built from the same data. The billable side of the picture stays honest. The free tier covers one client end to end.
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