Direct cost and overhead answer different questions
A direct cost exists because a particular job exists. Overhead keeps the business operating across many jobs. The distinction matters because a quote that covers direct cost but ignores overhead can still weaken the business.
Why this matters
Overhead does not disappear when it is left out of a quote — it is simply paid out of profit. Contractors who never build overhead recovery into their prices can stay busy all year and still struggle to cover the office, the truck, and the insurance.
Common overhead categories
- Office rent, utilities, phones, and software.
- Administrative and estimating time not charged to one job.
- General vehicles, small tools, licenses, professional fees, and marketing.
- General liability insurance and other company-level coverage.
- Training, accounting, and unbillable management time.
A permit purchased only for one project is normally direct cost. A company license that supports every project is generally overhead. The same type of expense can be treated differently depending on how the business uses and records it, so consistency matters.
Choose an allocation base
| Allocation base | Best when | Watch out for |
|---|---|---|
| % of direct cost | Cost mix is fairly consistent | Overstates overhead on big material buys |
| Per labor hour | Labor-driven service work | Needs a realistic billable-hour count |
| % of labor cost | Labor is the main driver | Understates overhead on material-heavy jobs |
| % of revenue | Quick high-level check | Hides which jobs actually carry overhead |
Check the annual math
Estimate annual overhead, subtract nonworking weeks, then estimate realistic billable volume. If annual overhead is $120,000 and the business expects 6,000 billable labor hours, the starting recovery target is $20 per billable hour before profit. Revisit the assumption when workload changes.
| Input | Value |
|---|---|
| Annual overhead | $120,000 |
| Expected billable labor hours | 6,000 |
| Overhead recovery per hour | $20.00 |
Do not count the same cost twice. If vehicle cost is already included directly in every job, it should not also be fully recovered through the overhead percentage.
Under-recovery when work slows
Overhead recovery per hour assumes a billable-hour volume. If the year comes in slower than planned, the same annual overhead is spread over fewer hours, so the true recovery target per hour was higher than the estimate used. Contractors who set the rate once at the start of a busy year and never revisit it can quietly under-recover when volume dips.
Review overhead when the business changes
New office space, a hire, added software, or a second vehicle all move overhead. Re-run the annual math when a fixed cost changes rather than waiting for year-end, so the recovery built into quotes reflects the business as it is now.
Frequently asked questions
What counts as overhead versus direct cost?
Direct cost exists because of one job (job materials, field labor, a project permit). Overhead supports the whole business (office, insurance, admin time).
How much should I add for overhead?
Estimate annual overhead and divide by realistic billable volume. If overhead is $120,000 and you expect 6,000 billable hours, that is $20 per hour before profit.
Which allocation base is best?
It depends on the trade. Labor-driven service work often uses per-hour recovery; material-heavy work needs a base that does not overstate overhead on materials.
Can overhead be double-counted?
Yes. If a cost like vehicles is already charged directly to jobs, it should not also be fully recovered through the overhead percentage.