Quickly calculate how much you’re actually making on a job and whether you’re undercharging. Enter your price and costs, see your true margin instantly, and turn the result into a professional invoice.
Inputs
Add the numbers you already know from the job estimate.
Use this reverse calculation to see what you should charge if you want to hit a healthier margin.
Live Results
Profit
You make: $1,400.00
Profit margin
Margin: 28%
Status
This is a healthy contractor margin for many jobs.
Breakdown
Target margin price
Charge about $5,142.86 to hit your target margin of 30%
What Is Profit Margin
Profit margin is the percentage of the job price you keep after covering labor, materials, overhead, and the rest of your real costs. It shows whether a project is truly worth taking, not just whether money comes in.
Good Margin
That depends on trade, market, and job risk, but many contractors aim for at least a 20% margin and often prefer something closer to 25% to 35% on smaller, more variable jobs. If your margin is too thin, even a small overrun can wipe out your profit.
Examples
A job can look profitable at first glance, but once labor overruns, disposal fees, travel time, and material waste are counted, the real margin can fall fast. Running the numbers before you send the invoice helps protect your pricing.
Worked Examples
A solid margin with room for small surprises.
Looks fine on top line revenue, but the margin is tighter than it first appears.
A healthier target price can protect you from project drift.
Contractor FAQ
Take the job price, subtract total labor, materials, overhead, and other real costs to get profit. Then divide that profit by the job price and multiply by 100 to get your profit margin percentage.
Include labor, materials, subcontractors, permits, disposal, travel, equipment, and overhead such as insurance, admin time, and small hidden costs. If a cost is real, it should be in the margin check.
There is no single universal number, but many contractors get uncomfortable when margins drop below about 20%, especially on jobs with change-order risk or uncertain labor time. Thin margins leave little room for mistakes.
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