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Contractor Break-Even & Cash Model

Type in the blue cells. Anything you do not pay for, set to 0 — do not delete the row.

FIXED MONTHLY OVERHEAD
WHAT YOU HAVE TO TAKE HOME
THE AVERAGE JOB
THE RULES YOU BID BY
RETAINERS, STARTUP & CASH

THE NUT

Fixed overhead — lights on only—
THE NUT — lights on, your pay, the loans—
What that is per working day—

THE AVERAGE JOB, HONESTLY

Hard costs on that job—
House fee held off the top—
Contribution per job—
Contribution per dollar billed—
Net profit per job after the house fee—
Gross margin on that job—
Verdict on that margin—

WHAT THE FLOOR COSTS YOU

Ticket this job needs to clear the floor—
Ticket to hit your target margin—
Most this job can cost and still clear the floor—
Headroom before you hit the floor—
Materials on this job, billed at your markup—
A minimum-fee service call nets—

HOW MANY JOBS CLEARS IT

Retainer contribution each month—
Jobs to cover overhead alone—
JOBS A MONTH TO CLEAR THE NUT—
Revenue a month at break-even—
Working days between jobs at break-even—
Retainers that would cover the whole nut—
Margin of safety at your current pace—

THE HOLE, AND HOW LONG IT TAKES

Contribution you actually generate—
Left after the whole nut—
Months to earn the startup spend back—
Extra jobs that would clear the startup spend—
Months of nut sitting in the bank—

Six-Month Cash Projection

One row per month. Type over the example rows. Grey columns calculate themselves.

MonthJobs completedAvg job ticketRetainers activeJob revenueRetainer revenueTotal revenueDirect job costsOverhead + owner payNet for the monthCash on handWhat happened
1——————
2——————
3——————
4——————
5——————
6——————
7——————
8——————
9——————
10——————
11——————
12——————
13——————
14——————
15——————

Where that leaves you

—

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Last updated: October 2026

Educational estimates only. These calculators and workbooks do the arithmetic on the figures you enter; they are general-purpose tools, not financial, investment, tax, legal, lending, insurance or construction advice, and no result is a quote, an offer, or a guarantee of any outcome. Results depend entirely on your inputs and assumptions. Verify anything you intend to rely on with a licensed professional — a CPA, attorney, lender, licensed contractor, or your own agent. WorkbookBarn and Marcos Gil accept no liability for decisions made using these tools. Marcos Gil is a licensed Kentucky real estate agent (License No. 296259) and is not a lender, CPA or attorney.

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