MJMarginJob
Built for contractors & small service crews
Know before you quote

Price the job.
Protect your profit.

A clear, no-accounting-speak calculator for contractors who need to know what a job really costs—and what to charge.

No sign-upRuns in your browserYour numbers stay private
Job profit calculator

Enter the job numbers

Use your best estimates. You can change any number.

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Before sales tax
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hrs
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Your target

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Saved jobs

Pricing tool

Markup Calculator

Start with what the job costs. Set the profit margin you want. Get the customer price without mixing up markup and margin.

Step 1

Cost and target

Use the full estimated job cost.

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Customer price = cost ÷ (1 − target margin). A 25% margin is not the same as a 25% markup.
Cost control tool

Labor Burden Calculator

See what one paid hour really costs after payroll taxes, workers’ comp, benefits, and paid non-working time.

Step 1

Build the true hourly cost

The displayed values are a worked example. Replace every rate with current business records.

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Productive-hour cost = paid-hour cost ÷ (1 − paid non-working time). Rates vary by state, trade, insurer, employee, and business.
Scope control tool

Change Order Calculator

Price extra work with labor, materials, overhead, and profit shown separately—before the added work starts.

Step 1

Price the added scope

Enter only the extra work created by this change.

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Document the description, schedule impact, and approval separately. This tool prices the numbers only.

Four tools. One clear price.

Move from true cost to a quote that protects your profit.

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Markup Calculator

Turn job cost and desired margin into a clean customer price.

Open calculator →
HR

Labor Burden

Find the true hourly cost after payroll taxes, insurance, and benefits.

Open calculator →
CO

Change Order Price

Price added labor, materials, overhead, and profit without guessing.

Open calculator →

Built for the person pricing the work

No finance dashboard. No spreadsheet setup. MarginJob uses plain labels, large touch targets, and a result you can read beside the truck, at the supply house, or before sending a quote.

✓Shows cost, profit, and margin separately
✓Explains the price needed for your target
✓Works on phone, tablet, and desktop

Margin and markup are not interchangeable

Margin is profit divided by selling price. Markup is profit divided by cost. To preserve a target margin, divide cost by one minus the margin instead of simply adding the same percentage to cost.

Worked example

With $6,200 in cost and a 25% target margin, the unrounded price is $8,266.67. Rounded up to the nearest $50, the quote is $8,300, profit is $2,100, actual margin is 25.3%, and markup on cost is 33.9%.

Rounding upward protects the selected margin. A large rounding increment may push the actual margin above your target.

Markup calculator questions

Why does 25% margin require 33.3% markup?

Because the percentages use different bases. Margin uses the final selling price; markup uses the original cost.

Should I mark up every cost separately?

You can, but this calculator starts from the complete job cost. Make sure labor burden, overhead, and other real costs are already represented.

Does the price include sales tax?

No. Add and report sales tax according to the rules that apply to your work and location.

Latest Insights

Where contractor jobs quietly make or lose money.

Why a 20% Markup Is Not a 20% MarginThe pricing mix-up that shrinks margin.5 Costs Contractors ForgetThe lines that vanish from a quote.Why Busy Contractors Still Lose MoneyA full schedule is not a profitable one.

All insights →  ·  Pricing by trade →