Service-Business Break-Even Jobs Calculator

Jobs per month, week, and day to break even, hit a profit goal, and stay within crew capacity. Includes a +10 / +20 / +50% profit-scenario ladder.

Costs

Monthly fixed costs

Rent, insurance, software, marketing, loan, base salary.

Variable cost / job

Fuel, materials, sub-contractor, disposal, per-job labor.

Revenue

Average job revenue

Monthly profit target

Optional. Owner take-home goal on top of fixed costs.

Capacity (optional)

Crew capacity (jobs/mo)

Optional. Realistic jobs/month one crew can deliver.

Working days

5-day (21.7) 6-day (26)

Jobs / month to break even

—

Jobs / week

—

Jobs / day

—

Profit-scenario ladder

Scenario	Jobs / month	Monthly revenue	Monthly profit

Contribution margin / job: —
Contribution-margin ratio: —
Break-even monthly revenue: —
Margin of safety Set crew capacity to compute.: —

Export

How this is calculated

Break-even uses the contribution-margin formula every business textbook teaches. Subtract per-job variable cost from average job revenue to get the contribution margin; divide monthly fixed costs by that to get the number of jobs per month.

cm        = avg_job_revenue − variable_cost_per_job
be_jobs   = fixed_costs / cm
target    = (fixed_costs + profit_target) / cm
revenue   = be_jobs × avg_job_revenue
per week  = be_jobs / 4.33
per day   = be_jobs / 21.7   (5-day)  or  / 26 (6-day)
mos %     = (capacity_revenue − be_revenue) / capacity_revenue

The scenario ladder layers +10% (safety buffer), +20% (comfortable), and +50% (growth pace) extra jobs above break-even — each tier puts that fraction of fixed costs in the bank as profit.

Sources: SBA, Corporate Finance Institute, Investopedia, AccountingCoach. Margin-of-safety threshold (≥20% healthy / 10–20% caution / <10% risk) follows CFI guidance.

How we choose and check our formulas