Road And Highway Construction Break-Even Analysis: $96K/Month

Fixed costs $21.5K Monthly overhead

Contribution margin 95.1% After direct costs

Break-even revenue $22.6K Monthly sales floor

Break-even timing Month 1 Launch month

Break-even calculator

Use this to test monthly revenue, variable expenses, and fixed costs against break-even for road and highway work.

Lean Base Full

Monthly revenue Revenue is the cash you bill each month before direct job costs. $ Low run rate Peak run rate Variable expenses These are direct project costs that rise with job volume and mix. $ Light direct cost Heavy direct cost

Money available to cover fixed costs $5,825,208 $6,333,333 revenue - $508,125 variable expenses

Margin ratio

92%

Covers fixed costs

Yes

Fixed monthly costs This is the overhead base contribution margin has to cover. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which road construction expenses stay fixed and which move with project volume?

Cost classification

Break-even is reliable only when stable overhead stays fixed and job-driven spend moves with project volume. In this model, bonds, fuel, and direct project inputs move with revenue or units, while management capacity changes in steps.

Expense	Cost	Break-Even Treatment	Common Mistake
Office Rent at $10,000/month	Fixed	Include as monthly overhead from Month 1 through Month 60.	Allocating it by project and hiding true monthly burn.
General Insurance at $1,200/month	Fixed	Keep flat within the monthly planning range unless policy terms change.	Treating recurring insurance like a project-driven percentage.
Project Performance Bonds	Variable	Apply as a revenue-linked rate: 1.5% in the first year, declining to 1.0% by the fifth year.	Modeling bonds as one flat monthly premium.
Fuel & Consumables Project Specific	Variable	Apply as a revenue-linked rate: 1.0% in the first year, declining to 0.8% by the fifth year.	Forgetting that equipment activity rises with active jobs.
Direct Project Unit Inputs	Variable	Charge per completed job, such as $1,000,000 for a new road build and $565,000 for a bridge repair.	Treating asphalt, earthwork, steel, traffic control, and patching as fixed overhead.
Utilities & Internet at $1,500/month base	Semi-variable	Use the monthly base, then review usage as workload and site support needs rise.	Assuming every utility dollar stays flat as crews scale.
Chief Project Manager Salary at $150,000 per FTE	Semi-fixed	Model in staffing steps: 1.0 FTE early, rising to 2.0 FTE by the fourth year.	Smoothing project management capacity as a constant revenue percentage.
Senior Estimator Salary at $120,000 per FTE	Semi-fixed	Add capacity in steps as bid volume grows, reaching 1.5 FTE in later years.	Treating added salaried capacity like direct labor per job.

How does break-even change across lean, base, and full road work?

Scenario table

As the backlog grows, revenue rises faster than fixed overhead, so break-even gets easier to clear. The catch is cash timing: billing and pay cycles still matter in the opening month.

Planning assumptions only; actual cash flow can move with job timing, scope changes, and field conditions.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean road mix	$63.3M	$6.7M	$861K	89.5%	$55.8M	Strong cushion; revenue sits far above the ~$962K break-even line.
Base road mix	$137.0M	$13.0M	$969K	90.5%	$123.0M	Comfortable cushion, with fixed overhead spread across more work.
Full road mix	$222.3M	$19.6M	$1.08M	91.2%	$201.6M	Largest cushion, but billing timing still needs tight control.

What breaks first if billing slips or job costs rise?

Stress test

Year 1 break-even sits near $962K a month on $861K of fixed cost and a 89.5% contribution margin. The model has room, but slower billing, higher overhead, or bigger direct job costs can shrink that cushion fast.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$962K/month	$5.37M cushion	Base case clears break-even by a wide margin.
Revenue shortfall	Monthly billed revenue falls 15% from the Year 1 average.	$962K/month	$4.42M cushion	Still above break-even, but delayed billing cuts about $950K of room.
Fixed-cost rise	Year 5 salaried and overhead load rises to about $1.082M a month.	$1.186M/month	$5.15M cushion	Headcount and overhead push the hurdle higher.
Margin pressure	Direct job costs rise enough to cut contribution margin to 84.5%.	$1.02M/month	$5.31M cushion	Fuel, materials, and rework can lift break-even without any revenue loss.
Combined pressure	Billed revenue falls 15%, fixed overhead reaches $1.082M a month, and contribution margin drops to 84.5%.	$1.28M/month	$4.10M cushion	The business still clears break-even, but the cash cushion gets much thinner.

What should the founder verify before buying equipment and scaling bids?

Founder checklist

Don't commit to the fleet, staff, or a bigger lease until signed backlog and billing timing clearly cover the model's $962K monthly break-even. In this plan, the real test is cash: you need $2.133M at the Month 1 low point and still have room for $1.72M of capex.

1Backlog cover$962K/mo

Verify committed work and billing milestones can absorb retainage and slow pay, or Month 1 break-even becomes a paper number.

2Cash cushion$2.133M

Keep opening cash above the Month 1 minimum after the $1.72M capex wave so the first crew mobilizations do not starve operations.

3Margin mix87.5% CM

Check the listed unit costs plus 1.5% project bonds and 1.0% fuel still leave enough contribution margin (CM) to cover fixed overhead.

4Payroll load$1.03M/yr

Add the CEO, project, estimating, safety, and admin roles only when project volume can carry that fixed payroll and overhead.

5Equipment use$1.72M

Test utilization before buying the excavator, paver, mixer, grader, dump trucks, and tools, because idle iron slows payback fast.

6Launch paceYear 1 $76.0M

Only scale bids when your estimator and safety coverage can handle the Year 1 mix of 2 new builds, 5 resurfaces, 1 bridge repair, 1 widening, and 3 maintenance jobs.