What’s a "Break-Even Job," and Why Every Trades Owner Should Know Theirs
If you ask most owners what their break-even job size is and you’ll get a shrug or a guess. It sounds like something only a bigger company needs to track, but it’s one of the simplest and most useful numbers a trades business can calculate, and a lot of shops are pricing without it.
The Formula, in Plain Terms
Your break-even job size is the average job you need to sell, at your target margin, to cover your fixed costs for the month. The formula is:
Total fixed costs for the month ÷ number of jobs you expect to run that month ÷ your target gross profit margin = the average job size you need to be pricing at
Most owners already have all three of those numbers somewhere in their books.
Step 1: Sort Your Costs
Fixed costs are the ones that show up whether you run 10 jobs this month or 60. Direct costs (also called variable costs) are the ones that only happen because a job happened. A rough sort usually looks like this:
| Usually fixed | Usually direct |
|---|---|
| Rent, shop, and yard | Field labor on the job, loaded with payroll taxes and workers’ comp |
| Insurance | Materials and parts |
| Office and admin salaries, including the owner’s salary | Subcontractors |
| Software and phones | Equipment rentals for a specific job |
| Truck and equipment payments | Fuel and disposal fees tied to the job |
| Marketing | Permits |
A few costs land in a gray area, like a truck payment for a vehicle that only goes to job sites. What matters most is sorting them the same way every month so the number stays comparable.
Step 2: Run the Break-Even Math
Let’s say fixed costs (rent, insurance, admin salaries, software, truck payments) run about $30k a month. You typically run 40 jobs a month, and you’re targeting a 40% gross margin.
$30k ÷ 40 jobs = $750 per job in gross profit needed just to cover fixed costs, before the business has made a dollar of profit.
$750 ÷ 40% = $1,875. That’s the break-even average job size. If the average job is running below $1,875, the business isn’t covering its fixed costs at the target margin, and it’s relying on volume to make up the difference.
Step 3: Cost a Real Job and Compare
This is where the number gets useful. Let’s say we cost out a typical job:
| Cost | Amount |
|---|---|
| Labor: 6 hours at about $30 an hour loaded | $180 |
| Materials and parts | $400 |
| Fuel, disposal, and job supplies | $50 |
| Total direct cost | $630 |
| Price charged | $1,200 |
| Gross profit | $570 (about 48%) |
A 48% margin looks great next to a 40% target. But each job needs to bring in $750 of gross profit to cover the fixed costs, and this one brings in $570. So even at a healthy margin, every job like this leaves about $180 of overhead uncovered. Run 40 of them and that’s around $7k a month the business is short, even though the margin percentage looks fine.
The fix might be raising the price, bundling small jobs into bigger visits, adding a minimum charge, or steering the schedule toward larger jobs. Which one fits depends on the business, but you can’t pick one until you know the gap is there.
Why the Number Moves More Than People Expect
Change any one input and the break-even number moves with it. Add a new admin hire and fixed costs go up, which pushes the required job size up too, unless job count or margin moves to offset it. A slow month changes it the most:
| Normal month | Slow month | |
|---|---|---|
| Fixed costs | $30k | $30k |
| Jobs run | 40 | 25 |
| Gross profit needed per job | $750 | $1,200 |
| Break-even job size at 40% margin | $1,875 | $3,000 |
The fixed costs didn’t change at all, but each job in the slow month has to carry $1,200 of overhead instead of $750. That’s why the number is worth recalculating a few times a year, and why it helps to know it for your slowest months as well as your average ones.
What to Do With the Number Once You Have It
Once you know your break-even job size, you can look at your actual average job value and see right away whether you’re above it, at it, or below it. If you’re consistently below break-even on an average basis, the business can still survive on volume for a while, but it’s fragile, and any slow stretch turns into a real problem fast. If you’re comfortably above it, you have room, whether that’s room to invest, room to get through a slow season, or room to be more selective about which jobs you take.
Keep in mind that break-even is the floor. Pricing for the profit you want to keep, and knowing how many jobs your crews can realistically run, are the next pieces, and they’re where the number turns into a pricing plan.
Where to Start
If you want one thing to do this week, add up last month’s fixed costs from the P&L, count how many jobs you ran, and plug in your gross margin. Then compare the result to your average ticket from the same month.
If you don’t know your break-even job size, a free Cash Clarity Call is a good place to find it and see where your actual average job stacks up against it.
