CIVIL CLUSTER · OVERHEAD BENCHMARKS

OVERHEAD RATE FOR EXCAVATION CONTRACTORS — WHAT IT SHOULD BE.

QUICK ANSWER

The target overhead rate for excavation contractors doing $2M–$8M is 10–14%. Excavation carries significant equipment fleet overhead — the carrying cost of large equipment between projects, GPS and machine control systems, and the administrative infrastructure to manage a mobile, multi-site operation. Most excavation contractors who have never formally calculated their overhead rate find it running 4–6 points above what they have been bidding.

Excavation overhead is dominated by equipment economics. The fleet that produces revenue when it is working generates overhead cost when it is not. Understanding that carrying cost and building it into the overhead rate is the foundation of accurate excavation bidding.

BY JOSH LUEBKERPublished: May 2026Updated: May 2026

THE TARGET RANGE

OVERHEAD BENCHMARKS FOR EXCAVATION CONTRACTORS.

OVERHEAD RATE BENCHMARKS — $1M–$12M

10–14%Target range

15–19%Elevated — review discretionary items

20–25%High — structural problem

26%+Critical — overhead consuming all margin

Excavation contractors at $1M–$3M may run 13–16% overhead as fixed costs are spread over a smaller revenue base. At $5M+, the overhead rate should be in the 10–12% range as fixed costs are amortized across more revenue.

WHAT DRIVES EXCAVATION OVERHEAD

THE LINE ITEMS THAT PUSH EXCAVATION OVERHEAD ABOVE TARGET.

DRIVER 01

Equipment Fleet Carrying Costs

Excavators, bulldozers, scrapers, compactors, and support equipment generate ownership costs every day whether they are on a project or not. Depreciation, insurance, registration, and storage for fleet equipment not being charged to projects at a daily rate belongs in overhead. A contractor with a $1.5M fleet running 75% utilization carries 25% of annual ownership cost — potentially $50,000–80,000 per year — in overhead.

DRIVER 02

GPS and Machine Control Systems

GPS machine control is now standard for production excavation work. Purchase price, annual subscription fees, and maintenance for GPS systems not being charged to projects at a daily rate belongs in overhead. At $15,000–25,000 per machine per year in GPS system costs across three machines, this can be a $45,000–75,000 annual overhead line.

DRIVER 03

Trucking and Hauling Coordination

Excavation projects require significant trucking coordination — scheduling haul trucks, managing disposal sites, coordinating with receiving facilities. The project manager or dispatcher time spent on trucking coordination not directly charged to projects belongs in overhead as administrative cost.

HOW TO CALCULATE YOURS

ONE SITTING. REAL NUMBER.

Pull every fixed cost from last 12 months — everything not a direct job cost

Include owner salary at market rate ($120K–$180K for most $2M–$8M owner-operators) — most commonly missing line item

Include office staff, rent, utilities, GL and umbrella insurance, vehicles not job-costed, software, accounting, legal, marketing

Divide total overhead by total revenue from the same 12 months

Compare to the bid rate you have been applying — the gap is unrecovered overhead on every project you have won

Free calculator: The CFOS overhead rate calculator walks through every line item and produces your real rate in about 10 minutes at constructioncfo.net/construction-overhead-rate-calculator-interactive

COMMON QUESTIONS

FREQUENTLY ASKED.

What overhead rate should I bid at for excavation work?

Bid at your real overhead rate — not an industry average. The benchmark range is a target to manage toward. Calculate your actual costs first, then compare to the benchmark to understand whether your cost structure is competitive. If your real rate is 16% and you bid at 10%, you are leaving 6 points of overhead unrecovered on every job.

How often should I recalculate my overhead rate?

Annually at minimum. Also recalculate any time a major overhead item changes — new hire, significant equipment purchase, office move, or major software change. The overhead rate reflects the real cost of running the business at its current size.

Does CFOS track overhead rate for excavation contractors?

Yes. Overhead rate calculation and monthly tracking is part of every CFOS engagement. The rate is recalculated annually and reviewed monthly against the trailing 12-month actual. When overhead creeps, the rate update happens before the next bid goes out.

Josh Luebker

Fractional CFO · The Construction CFO

Former commercial construction project manager and master electrician. Managed 150+ projects totaling $300M+. Now fractional CFO for commercial subcontractors doing $1M–$12M. About Josh → | LinkedIn →

RELATED RESOURCES

OVERHEAD RATE FOR EXCAVATION CONTRACTORS — WHAT IT SHOULD BE.

OVERHEAD BENCHMARKS FOR EXCAVATION CONTRACTORS.

THE LINE ITEMS THAT PUSH EXCAVATION OVERHEAD ABOVE TARGET.

Equipment Fleet Carrying Costs

GPS and Machine Control Systems

Trucking and Hauling Coordination

ONE SITTING. REAL NUMBER.

FREQUENTLY ASKED.

WHAT IS YOUR REAL EXCAVATION OVERHEAD RATE?