Overhead Factor Explained: The Missing Link Between Busy and Profitable

Why You Need a 12-Month Profit & Loss Statement

Start with a rolling 12-month P&L. Anything shorter distorts reality.

Some of your largest expenses only occur once or twice per year:

• Errors & Omissions insurance
• General liability insurance
• Annual events (holiday parties, client events, golf outings)
• Seasonal or irregular overhead costs

If you calculate overhead month-to-month, short-duration projects may avoid these costs entirely. That creates artificially inflated profitability.

Every project must carry its share of the full annual cost of running the business.

Step 1: Focus Only on Expenses

Ignore revenue. Ignore direct project costs already assigned.

You are solving for overhead.

Start with:

• Total operating expenses (from your 12-month P&L)

Step 2: Separate Direct vs Indirect Payroll or Labor Costs

This is where most firms get it wrong.

You must split payroll into two categories:

Direct Payroll (Billable Labor)

• Time spent working on revenue-generating projects

Indirect Payroll (Overhead Labor)

• Marketing
• Admin and accounting
• Billing
• Training and professional development
• PTO, holidays, sick time
• Internal meetings, client development, events

If your accounting system doesn’t separate these, fix that first. Everything downstream depends on it.

Important simplification:

Treat all burden (payroll taxes, health insurance, 401k match, etc.) as indirect payroll.

Do not over-engineer this allocation—it adds complexity without meaningful accuracy gains.

Step 3: Calculate Overhead Cost

Formula:

Overhead Cost = Total Expenses – Direct Payroll

Example:

• Total Expenses: $809,625
• Direct Payroll: $310,000
• Overhead Cost: $499,625

Note:

If direct payroll is already categorized under Cost of Goods Sold (COGS), it will not be included in expenses. In that case, no subtraction is needed.

Step 4: Calculate the Overhead Factor

Formula:

Overhead Factor = Overhead Cost ÷ Direct Payroll

Example:

• $499,625 ÷ $310,000 = 1.61

That means:

For every $1.00 of direct labor, your firm carries $1.61 in overhead.

What’s a “Good” Overhead Factor?

There is no universal target.

Typical range:

• Low: ~1.0
• Average: ~1.5–1.7
• High: ~2.0+

The only number that matters is yours.

Using industry averages instead of your actuals will misprice your work.

Step 5: Apply It at the Project Level

Once you have your overhead factor:

1. Track direct labor on a project
2. Multiply by your overhead factor
3. Calculate true cost

Project Profit Formula:

Revenue – Direct Labor – (Direct Labor × Overhead Factor) = Net Profit

This gives you:

• True profitability per project
• Visibility into which work is actually worth doing

Operational Impact

Firms that do this correctly gain:

• Real-time project profitability
• Accurate fee setting
• Clear visibility into which clients and project types perform best
• Elimination of “we’re busy but not making money”

Where Most Firms Break

• Using monthly P&Ls instead of 12-month rolling
• Not separating direct vs indirect payroll
• Overcomplicating burden allocation
• Relying on industry averages instead of actuals
• Calculating overhead once per year and never revisiting

Practical Application

Once implemented, this should not be a spreadsheet exercise you revisit quarterly.

The goal is real-time visibility:

• Every hour logged should carry both direct labor and overhead
• Profitability should update continuously as work is performed

That’s the difference between hindsight accounting and operational control.

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