Break-Even Calculator

By Trade Business Guide Research Desk



Why gross margin drives the answer

A customer payment does not all become money available for rent, insurance, office staff, and other fixed commitments. Materials, job labor, and other variable costs consume part of the ticket. Gross margin (%) states the share left after those variable costs under your chosen accounting definition. The calculator multiplies average ticket by that share to estimate contribution per job. It then divides fixed monthly cost by contribution. If you enter revenue as the margin, the tool will seriously understate the work required.

Fixed monthly cost is the amount that remains due even when jobs are scarce. It may include rent, subscriptions, recurring insurance, vehicle commitments, and salaried support, depending on how you classify costs. Keep direct per-job spending out of fixed cost if it is already reflected in your gross margin; otherwise the same expense appears on both sides of the model. Build a monthly ledger with monthly expense if you need a starting point, then separate fixed and variable categories.

How the calculation works

Contribution per job = average ticket × gross margin / 100. Break-even jobs per month = ceil(fixed monthly cost / contribution per job). The ceiling matters: a fraction of a job does not cover the remainder of a bill. The calculation requires a positive contribution denominator. A zero ticket or zero margin produces no job count. It assumes each additional job has the same average ticket and gross margin; it does not include income tax, owner withdrawals, or cash collection timing.

Dispatch-board example

Example assumptions — not benchmarks: monthly fixed cost $6,000, average ticket $500, gross margin 40%. Contribution per completed and paid job is $500 × 0.40 = $200. Dividing $6,000 by $200 yields 30 jobs, so the displayed break-even requirement is 30 jobs per month. At 29 jobs, contribution would be $5,800, leaving $200 of fixed cost uncovered. At 30 jobs, the modeled contribution exactly matches fixed cost. These are chosen numbers for illustrating the formula, not average performance for a trade.

The count is a workload threshold, not a sales forecast. Compare 30 jobs with technician availability, job duration, travel, cancellations, and the number of leads needed to close that many sales. If a season reduces volume, test the lower ticket or margin that might accompany discounts and a different job mix. For a business with varied services, an average ticket can hide high-revenue jobs with low margin and small jobs with high margin. Segment the mix and calculate contribution for each category when that difference matters.

From count to action

When the required count exceeds capacity, the levers in this formula are fixed spending, ticket size, and gross margin. Cutting a fixed cost lowers the numerator. Improving price or controlling variable cost raises contribution. Neither action guarantees more demand. The job pricing calculator can test whether an individual quote achieves a target margin, while profit margin measures an actual result after costs. Use jobs needed if you already have a revenue goal and only need the job count implied by an average ticket.

This calculator reports the minimum jobs to cover the fixed amount entered. It does not add a desired owner income or profit reserve unless you include those in fixed monthly cost, and doing so changes the meaning of “break even.” Name the cost categories in your planning notes so a later reader can tell whether this is operating break even or a fuller personal income target. Review it whenever the fixed cost base, service mix, or ticket changes.

Last updated: September 24, 2026