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FIBER CLUSTER · OVERHEAD RATE BENCHMARK

Fiber Contractor Overhead Rate

QUICK ANSWER

Most fiber contractors calculate their overhead rate during peak carrier deployment periods — when crews are at 80% utilization and the rate looks right. At 55% annual utilization, that same rate loses money on overhead every slow month. The fix is calculating overhead on 12-month annual revenue, not peak-month revenue. For a $2M fiber sub, the difference between a rate built on 80% utilization and one built on 55% utilization is $15–$25 per hour — and $30K–$50K of annual margin that disappears every time a carrier project slows.

Overhead rate for a fiber contractor has a component that does not exist for most other trades: utilization sensitivity. When carrier T&M work slows, crew hours drop, but overhead does not. If the overhead rate was set assuming 80% crew utilization and you run 55% utilization three months out of twelve, those three months are structurally unprofitable at the current rate. The only fix is to calculate overhead on your honest annual utilization across the full year — busy months and slow months weighted together — and price every job at that rate.

BY JOSH LUEBKERPublished: June 2026Updated: June 2026
OVERHEAD RATE BENCHMARKS

Fiber Contractor Overhead By Revenue Band

$500K – $2M REVENUE
Healthy Range
18–26%
Industry Average
24–34%
Warning Zone
Above 30%
At this revenue level, fixed overhead costs — vehicle fleet, equipment, office, insurance — are large relative to revenue. The overhead rate spikes when carrier work slows because the denominator (revenue) drops faster than the numerator (overhead costs). Calculate on annual revenue, not peak-month revenue, to get the real number.
$2M – $6M REVENUE
Healthy Range
14–22%
Industry Average
20–30%
Warning Zone
Above 26%
This is the most common range for fiber contractors with 2–5 crews doing carrier T&M work. The overhead rate problem is most acute here because crew utilization is most variable — carrier deployment cycles create 20–30 point swings in monthly utilization. A rate calculated at peak utilization is priced wrong for half the year.
$6M – $12M REVENUE
Healthy Range
12–18%
Industry Average
16–24%
Warning Zone
Above 22%
At this scale, a diversified revenue mix — structured cabling contracts alongside carrier T&M — stabilizes the utilization base and allows the overhead rate to normalize. Contractors running pure carrier T&M at this revenue level still face utilization volatility and need a rate calculated on 12-month weighted average utilization.

The utilization math: A fiber sub billing $125/hour T&M with 80% utilization covers labor, overhead, and profit. At 55% utilization — which is common during carrier deployment gaps — that same rate covers labor but not overhead. The gap: $15–$25 per hour, $30K–$50K per year on $2M in T&M work. One rate adjustment, built on honest annual utilization, eliminates that loss permanently.

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Onboarding: 60 days. Full pricing by revenue band →

COMMON QUESTIONS

FREQUENTLY ASKED.

For fiber and telecom contractors doing $2M–$6M, a healthy overhead rate is 14–22% of annual revenue. Most run 20–30% because the rate is calculated during peak utilization and becomes structurally wrong during carrier slow periods. The fix is calculating overhead on 12-month weighted average utilization — not the months when crews are slammed.
Overhead rate problems for fiber contractors are almost always utilization-driven. The rate is set when busy. When carrier work slows, crew utilization drops but overhead costs do not. The same rate that worked at 80% utilization loses money at 55% utilization. This is not a seasonal problem — it is a rate calculation methodology problem.
SPM calculates the T&M rate and overhead rate on 12-month annual utilization — not peak-month assumptions. We also identify the structured cabling or enterprise network work that stabilizes the utilization base and reduces rate volatility. Core Financial starts at $1,900/month. Fully operational in 60 days.
Josh Luebker — The Construction CFO
Josh Luebker
Fractional CFO · The Construction CFO

Former commercial construction project manager and master electrician. Managed 150+ projects totaling $300M+ including Google data centers, military bases, hospitals, and high-rises. Now fractional CFO for commercial subcontractors doing $1M–$12M through Sulphur Prairie Management. About Josh →  |  LinkedIn →

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