Mini Pile Underpinning Break-Even: $89K Monthly Revenue Target

Fixed costs $15.7K/mo Base overhead

Contribution margin 80.2% After direct costs

Break-even revenue $19.5K/mo Revenue needed

Break-even timing Month 2 Model ramp point

Break-even calculator

Test monthly revenue, variable expenses, and fixed costs against break-even for a mini pile foundation underpinning contractor.

Lean Base Full

Monthly revenue Use the monthly sales level that has to cover direct costs and overhead. $ Lower sales Higher sales Variable expenses Enter direct costs that move with each project, job, and invoice. $ Lower costs Higher costs

Money available to cover fixed costs $260,015 $509,833 revenue - $249,818 variable expenses

Margin ratio

51%

Covers fixed costs

Yes

Fixed monthly costs Enter the monthly cost base that break-even has to cover. $ Lean overhead Higher overhead

Break-even chart Revenue Total costs

Which mini pile underpinning expenses are fixed, and which move with sales?

Cost classification

Break-even is only useful if fixed overhead stays fixed and job-driven spend moves with revenue or units. Misclassify fuel, transport, or crew payroll, and Month 2 break-even can look safer than it is.

Expense	Cost	Break-Even Treatment	Common Mistake
Yard and Office Lease	Fixed	$6,500 monthly overhead from Month 1 through Month 60.	Assigning the full lease to one project.
General Liability Insurance	Fixed	$2,200 monthly overhead across the planning range.	Confusing it with the 1.5% site insurance surcharge.
Steel Pile Sections	Variable	$180 per standard steel mini pile installed.	Burying direct material use in overhead.
Heavy Equipment Transport	Variable	2.5% of high capacity helical pile revenue.	Ignoring mobilization when job volume rises.
Equipment Fuel and Lubricants	Variable	2.0% of standard steel mini pile revenue.	Treating field fuel as admin overhead.
Specialized Rig Maintenance	Semi-variable	1.5% of limited access pile revenue; track it with utilization.	Leaving rig wear flat as tight-access work grows.
Crew Foreman and Field Technician payroll	Semi-fixed	Capacity steps from 1 foreman and 2 technicians in the first year.	Hiring ahead of signed backlog.
Software Subscriptions	Fixed	$850 monthly operating overhead from Month 1 through Month 60.	Spreading it across piles unless pricing requires it.

How does break-even shift from lean to full utilization in mini pile underpinning?

Scenario table

As crew load rises, revenue grows faster than fixed payroll and overhead, so the break-even signal gets safer. Year 1 fits launch planning, Year 2 fits a second crew ramp, and Year 3 reflects stronger utilization.

Planning figures only. They reflect modeled assumptions for piles, inspections, and grouting, not guaranteed field results.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch case	$236.5k	$76.7k	$62.7k	67.6%	$97.1k	Revenue is already above break-even, but cushion can shrink fast if jobs slip.
Base crew ramp case	$345.3k	$110.5k	$79.8k	68.0%	$155.0k	A second crew spreads overhead better, so break-even risk drops.
Full utilization case	$509.8k	$156.6k	$96.1k	69.3%	$257.2k	Higher pipeline volume gives the strongest cushion, if field work stays steady.

What breaks first if project flow slows, overhead rises, or margins slip?

Stress test

The base case clears break-even with room, but the cushion shrinks fast if project flow slows or overhead rises. This ignores tax, debt service, and retainage timing.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$888K	$1,477K cushion	Healthy cushion, but not unlimited.
Revenue shortfall	First-year revenue falls to 38% of plan.	$888K	$11K cushion	At 38%, you are barely above break-even.
Fixed-cost pressure	Monthly overhead rises by $1K.	$902K	$1,463K cushion	A small overhead bump trims the cushion fast.
Margin pressure	Contribution margin drops 1 point.	$901K	$1,464K cushion	Tiny margin loss still moves the hurdle.
Combined pressure	Revenue falls to 38% of plan and contribution margin drops 1 point.	$901K	$2K gap	A small miss flips the plan negative.

Should you buy the rig and hire the crew before booked work clears break-even?

Founder checklist

Treat the rig, yard, and first hires as a bet on booked work. Check that demand, pricing, margin, and cash still hold if you start at the Month 2 low point and then scale into Year 2 volume.

1Booked demand$888K/mo

Confirm near-term signed work above the $888K monthly break-even level, with standard steel mini piles at $2,800, helical piles near $4,500, and limited access piles near $3,800 before discounts.

2Fixed load$62.7K/mo

Check that lease, insurance, software, utilities, accounting, and base pay together stay near $62.7K a month, because that fixed load must be covered before you feel any payoff.

3Bid margin71% CM

Keep contribution near 71% after the 2% third-party engineering review charge and 1% permit coordination fee, or the model loses its cushion fast.

4Staff rampYear 2

Do not add the second foreman and extra technicians until backlog can support Year 2 volumes of 600 standard piles, 300 helical piles, and 180 limited access piles.

5Rig access$426K spend

Secure rig access before committing cash, because the launch equipment list totals $426K and the mini pile driving rig alone is $185K.

6Cash floor$932K

Keep cash above the Month 2 low point of $932K, because profit on paper does not stop a cash squeeze during capex and ramp-up.