Free profit margin calculator for contractors
Enter your job costs and your target profit margin — get the price you need to quote. Works for any trade: plumbing, HVAC, electrical, roofing, painting, landscaping, and more. No spreadsheet, no account, just answers.
How to use it
1. Add up your job costs — materials, labor (hourly rate × hours), any other direct costs (permits, subs, disposal). Then add an overhead percentage that covers your truck, tools, insurance, and admin time. A common range is 10–25%.
2. Enter your target profit margin. Most residential trades target 20–40% net margin per job. Commercial and remodeling work often runs 15–25%.
3. Read the price. The calculator shows the price you need to quote, your profit dollars, and both the margin and the equivalent markup — so you can quote in whichever number you're used to.
Margin vs. markup — the mistake that costs contractors real money
Margin and markup are not the same thing, and confusing them is the single most common pricing mistake in the trades.
- Margin is your profit as a percentage of your price. If a $1,000 job cost you $700, your margin is $300 ÷ $1,000 = 30%.
- Markup is your profit as a percentage of your cost. That same $300 profit on $700 cost is a 43% markup.
Rule of thumb: a 50% markup only gets you a 33% margin. If you want a 30% margin, you need a ~43% markup. This calculator handles the math both ways so you can quote with confidence.
Worked example
Say a repair job needs $200 in materials, 4 hours of labor at $75/hr, and $50 in other costs. You carry 15% overhead and want a 30% profit margin.
- Materials: $200
- Labor: $300 (4 × $75)
- Other: $50
- Overhead (15%): $82.50
- Your cost: $632.50
To hit a 30% margin, you need to quote $903.57. That's a $271.07 profit, which is a 43% markup on cost.
FAQ
What is a good profit margin for a contractor?
Most healthy residential-trade contractors target a 20–40% net margin per job, with 25–35% being the common range. Commercial and larger remodeling projects often run tighter, 15–25%. Below 15% and a single bad job can wipe out a month; above 40% you may be losing bids on price-sensitive work.
Is 30% markup the same as 30% margin?
No. A 30% markup on cost gives you about a 23% margin on the final price. To net a 30% margin, you need roughly a 43% markup. The calculator above shows both numbers so you can price in whichever unit you're used to and hit the profit you actually want.
Should overhead be included in my job cost?
Yes. Overhead — truck, insurance, phone, tools, admin time — is a real cost of doing the job even though it isn't billed to the customer directly. Enter it as a percentage of your direct costs (materials + labor + other). If you don't cover overhead in your quote, your "profit" isn't profit — it's just deferred overhead.
Does this calculator include sales tax?
No. The price shown is your pre-tax quote to the customer. Add sales tax on top when you present the estimate or invoice, per your state's rules.
Can I use this for hourly work as well as flat-rate jobs?
Yes. For hourly work, enter your effective hourly labor cost (your pay, plus payroll burden if you employ others) as the labor rate, and use the target margin to derive your billable rate. That billable rate is your break-even hourly plus your margin.
Track every job's real profit — automatically
This calculator prices one job. If you want the same math applied to every invoice and estimate you send — with materials, labor, tax, and margin totals rolled up per job and per month — that's exactly what BIG INVOICE does. Free on iOS and Android, no account required.