If you run a pest control company, gross profit margin is the number that tells you whether the work itself makes money, before overhead and before taxes. Here is the formula, a worked example with real dollars, and the range operators actually run.
Gross profit margin is the share of every revenue dollar left after you pay the direct costs of doing the work.
The formula: revenue minus cost of service, divided by revenue, times 100.
Cost of service means the things that scale with the job. Technician labor, chemical and materials, fuel, and the vehicle costs tied to running routes. It does not mean rent, insurance, office staff, software, or marketing. Those sit below the gross margin line as overhead.
Getting that split right is the entire job, which is why we do bookkeeping built for pest control rather than generic bookkeeping.
Say you bill $850,000 in a year.
| Line | Amount |
|---|---|
| Revenue | $850,000 |
| Technician labor | $210,000 |
| Chemical and materials | $72,000 |
| Fuel and vehicle | $46,000 |
| Cost of service | $328,000 |
| Gross profit | $522,000 |
| Gross profit margin | 61.4% |
Now change one thing. Move $60,000 of route supervisor pay out of overhead and into cost of service, where it arguably belongs, because that supervisor time scales with the number of routes you run.
Cost of service becomes $388,000. Gross profit becomes $462,000. The margin drops to 54.4%.
Same business. Same $850,000. Seven points of difference decided entirely by which side of the line one salary sits on. When we ran that exercise across 107 operators on one standard chart of accounts, the median reported gross margin moved 18 points.
In our benchmark of 125 pest control operators, the median business ran a 60.3% gross margin. Top performers ran 64.0%.
Below 60% usually means one of three things: you are underpricing, material is walking off the truck, or labor is not being tracked against the jobs that caused it.
Above 65% is worth checking rather than celebrating. It often means cost of service is being under-counted, with real job costs sitting up in overhead where they quietly inflate the margin. For the full cost structure, see the margin range top pest control operators actually run.
There are only four levers, and three of them are not price.
Price. The fastest lever and the one owners avoid. A 5% price increase on a 60% margin book adds roughly two points of gross margin, because none of the cost moves with it.
Route density. Drive time is cost of service that produces no revenue. Tightening routes lifts margin without touching price or headcount.
Material control. Worth noting from the benchmark: top performers spent more on chemical and materials than everyone else, 10.2% of revenue against 8.3%. They are not cutting product. They are applying it correctly and not going back a second time.
Labor utilization. Billable hours divided by paid hours. Most operations should target 75% or better. Every point below that is margin sitting in a truck.
How do you calculate gross profit margin? Subtract cost of service from revenue, divide the result by revenue, and multiply by 100. On $850,000 of revenue with $328,000 of cost of service, gross profit is $522,000 and the margin is 61.4%.
What is the difference between gross profit and net profit? Gross profit is what is left after the direct cost of doing the work. Net profit is what is left after overhead, interest, and taxes as well. A business can have a strong gross margin and no net profit if overhead is too heavy.
Is 50% a good gross profit margin for pest control? It is below the benchmark. The median operator in our 125-operator study ran 60.3%. At 50% you are either underpricing or carrying costs in cost of service that other operators book as overhead.
Why did my gross margin change when nothing else did? Almost always because something moved between cost of service and overhead. The formula is simple. Which costs go on which side is where the real decision sits.
FRAXN keeps the books for 250+ service operators and $450M in managed revenue. Gross margin is one of the numbers we hand back every month, calculated the same way every time so you can compare this month to last.
