Underground Storage Tank Services Break-Even: $70K Monthly Revenue

Fixed costs $45.7K/mo Base overhead

Contribution margin 70.5% After job costs

Break-even revenue $64.8K/mo Revenue needed

Break-even timing Month 7 Launch ramp

Break-even calculator

Test how monthly revenue, variable expenses, and fixed costs shape break-even for underground storage tank services.

Lean Base Full

Monthly revenue Revenue sets the pool that can cover direct costs and overhead. $ Low revenue High revenue Variable expenses These are direct costs that rise with each job, like materials, disposal, fuel, and permits. $ Low costs High costs

Money available to cover fixed costs $61,000 $91,000 revenue - $30,000 variable expenses

Margin ratio

67%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead the business must cover before profit starts. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which expenses are fixed and which move with sales in an underground storage tank service business?

Cost classification

Break-even gets reliable only when monthly overhead stays separate from job-driven spend. In the first operating year, fixed overhead starts at $10,650/month before payroll, while job costs reduce margin as revenue is earned.

Expense	Cost	Break-Even Treatment	Common Mistake
Equipment Storage Yard Rent	Fixed	Include $4,500/month in base overhead before calculating revenue needed to break even.	Assigning yard rent per job and understating slow-month overhead.
Environmental Liability Insurance	Fixed	Include $3,200/month before revenue because coverage is required whether jobs close or not.	Ignoring compliance-driven overhead until after gross margin.
Regulatory Compliance Software	Fixed	Treat $850/month as recurring admin overhead in the break-even floor.	Burying software inside job costs and overstating contribution margin.
Safety and OSHA Compliance	Fixed	Include $1,100/month in launch overhead because safety readiness starts in Month 1.	Treating required safety spend as optional or seasonal.
Materials and Tank Components	Variable	Reduce contribution margin by 15.0% of first-year revenue, declining to 13.0% by the mature year.	Treating installation materials as fixed and underpricing large jobs.
Disposal and Remediation Fees	Variable	Reduce removal margin by 8.0% of first-year revenue, declining to 6.0% by the mature year.	Averaging away disposal exposure across all service lines.
Fuel and Vehicle Maintenance	Semi-variable	Model as usage-linked mobilization spend at 4.0% of first-year revenue, lower as routing improves.	Pricing long drives the same way as local jobs.
Crew Payroll	Semi-fixed	Use $35,000/month in the first operating year, then step up as staffing grows.	Assuming every technician hour rises and falls with each job.

How does break-even shift from lean to base and full UST service?

Scenario table

Year 1 pricing starts at $1,400 for inspection, $27,000 for installation, and $20,000 for removal, so mix shifts move break-even fast. More sales and estimating lift revenue, but they also raise fixed cost.

Planning assumptions only; actual job mix and timing can move break-even.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean year 1 mix	$909k	$268k	$494k	70.5%	$146k	Still above break-even, but the cushion is only about $208k.
Base year 2 mix	$1,703k	$477k	$694k	72.0%	$532k	Added sales and estimating help absorb fixed cost and widen the cushion.
Full year 5 mix	$4,033k	$948k	$1,107k	76.5%	$1,978k	Scale puts the model well above break-even with a large buffer.

What breaks the break-even plan for underground storage tank services?

Stress test

The plan clears break-even in the first year, but the cushion gets thin if booked work slips or overhead climbs. Fewer inspections, longer travel, higher disposal fees, and removal-heavy work are the main pressure points.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change; revenue stays at $909k and fixed costs stay at $494k.	$701k	$208k cushion	Healthy cushion, but fixed overhead still matters.
Revenue shortfall	Revenue falls 20% to $727k while costs stay flat.	$701k	$26k cushion	A smaller book still clears break-even, but the cushion gets thin.
Fixed cost increase	Fixed costs rise 10% to $543k.	$770k	$139k cushion	Higher overhead pushes the break-even line up fast.
Margin pressure	Variable expenses rise 5 points, cutting contribution margin to 65.5%.	$754k	$155k cushion	More disposal and travel cost pull margin down and raise break-even.
Combined pressure	Revenue falls 20%, variable expenses rise 5 points, and fixed costs rise 10%.	$829k	$102k gap	This case needs about $102k more revenue and runs roughly $67k negative.

Can you prove this launch clears break-even before you commit to the yard, trucks, and excavation gear?

Founder checklist

Don’t sign the yard, truck, and equipment commitments until the booked pipeline can support the $701k monthly break-even revenue, the Year 1 job prices of $1,400 for inspection, $27,000 for installation, and $20,000 for removal, and the fixed monthly overhead truly lands at $494k.

1Pipeline$701k/mo

Verify booked work, not leads, can cover the $701k monthly break-even revenue and the Year 1 job mix before you commit to the yard and fleet.

2Overhead$494k/mo

Make sure the fixed monthly overhead really sits at this level before you sign leases, insurance, and software that the model must carry from day one.

3Margin70.5% CM

Check that each job still leaves a 70.5% contribution margin after materials, disposal, fuel, and permits, or the break-even math moves against you.

4Crew Ramp$420k payroll

Match staffing to the $420k Year 1 payroll plan and keep the sales hire at Month 13 unless the backlog can absorb the extra capacity.

5Cash Cushion$402k cash

Hold at least $402k through Month 7, because that is where the model shows the low point before payback starts to catch up.

6Launch Demand$45k / $2.5k CAC

Use the $45k Year 1 marketing budget and $2,500 CAC to prove you can feed launch volume, and lock disposal vendors plus the permit flow before removal work starts.