Coral Reef Restoration Break-Even Analysis: $154K Monthly Revenue

Fixed costs $38.7K/mo Base overhead

Contribution margin 69.5% After variable costs

Break-even revenue $55.7K/mo Monthly target

Break-even timing Month 4 Launch ramp

Break-even calculator

Test monthly revenue, variable expenses, and fixed costs against break-even for a coral reef restoration service.

Lean Base Full

Monthly revenue Revenue sets the margin that covers fixed costs. $ Low sales High sales Variable expenses Direct costs that rise as project volume grows. $ Low direct High direct

Money available to cover fixed costs $1,082,043 $1,472,167 revenue - $390,124 variable expenses

Margin ratio

74%

Covers fixed costs

Yes

Fixed monthly costs Monthly overhead and payroll the margin must absorb. $ Low overhead High overhead

Break-even chart Revenue Total costs

Which coral reef restoration expenses are fixed, and which move with sales?

Cost classification

At Month 4 break-even, the model only works if fixed overhead stays separate from revenue-linked fieldwork. Misclassifying vessel idle time or gear usage can overstate contribution and make break-even look safer than it is.

Expense	Cost	Break-Even Treatment	Common Mistake
Office and Laboratory Rent	Fixed	Carry the $15K monthly base through the break-even model.	Treating lab space as project-only.
Marine Vessel Operations	Semi-fixed	Use the $8.5K monthly base, then add capacity steps as fieldwork expands.	Ignoring vessel idle time.
Insurance and Permits	Fixed	Model the $4.2K monthly charge as required operating overhead.	Tying permits only to revenue.
Marine Equipment and Diving Supplies	Variable	Apply 12% of first-year revenue to direct field delivery.	Burying gear usage in overhead.
Coral Nursery Operations	Variable	Apply 8% of first-year revenue to nursery inputs and care.	Underpricing nursery inputs.
Project Travel and Logistics	Variable	Apply 6% of first-year revenue as job-linked travel spend.	Averaging remote-site travel too low.
Subcontractor Specialist Services	Variable	Apply 4.5% of first-year revenue when outside specialists support delivery.	Forgetting specialist help in project margins.
Wages	Semi-fixed	Plan payroll in hiring steps; first-year staffed payroll averages about $49.4K per month after start-date timing.	Scaling headcount before contracted work lands.

How does break-even shift from a lean reef restoration ramp to a base case and a full operating build?

Scenario table

As the mix shifts from Year 1 to Year 5, variable costs fall from 30.5% to 22.5% of revenue and the contribution margin ratio rises from 69.5% to 77.5%. Fixed payroll also grows, so break-even depends on how fast revenue outpaces overhead.

Planning assumptions only; these scenario figures are directional and not guaranteed.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean reef ramp	$306.5K	$93.6K	$110.7K	69.5%	$102.3K	Early revenue clears break-even, but the cushion is still tight.
Base year 3 mix	$1,472.2K	$390.4K	$244.1K	73.5%	$837.7K	Break-even is covered, and the margin cushion is much stronger.
Full year 5 scale	$3,470.5K	$780.9K	$365.3K	77.5%	$2,324.3K	Scale creates a wide cushion, even with a larger team and field spend.

What breaks the break-even plan if revenue slips or field costs rise?

Stress test

Year 1 still clears break-even, but the cushion shrinks fast if contracts slip, vessel costs rise, or field expense moves up. The real watchout is cash: the model bottoms at negative $352,000 in Month 6 even though breakeven lands in Month 4.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$1,595,000	$2,084,000 cushion	Healthy on paper, but cash still dips in Month 6.
Revenue shortfall	Year 1 revenue lands 20% below plan.	$1,595,000	$1,348,000 cushion	Still above break-even, but the room for delay is smaller.
Fixed-cost pressure	Monthly overhead rises by $10,000.	$1,767,000	$1,911,000 cushion	Every extra month of payroll or vessel cost pushes breakeven out.
Margin pressure	Field expense rises by 1 percentage point.	$1,618,000	$2,060,000 cushion	Small margin loss, but it compounds across every project.
Combined pressure	Revenue lands 20% below plan, overhead rises by $10,000, and field expense rises by 1 point.	$1,791,000	$1,151,000 cushion	This is the tightest case and cash turns fragile fast.

What should the founder verify before committing to the vessel, nursery, and first hires?

Founder checklist

Before you commit to the vessel, nursery, and hiring plan, make sure the work is already real: signed or highly probable contracts, boat access, and enough cash to survive Month 6. The model breaks even in Month 4, but that only matters if the launch ramp matches the workload.

1Signed work$3.678M

Confirm signed or highly probable contracts before you grow past the Year 1 base team, because staffing ahead of demand makes break-even look better than it is.

2Boat access$8.5K/mo

Validate permits and secure boat access before you treat monthly vessel ops as committed capacity, because idle field weeks turn the $8.5K cost into drag.

3Fixed load$38.7K/mo

Check that office and laboratory rent is needed now; with all fixed costs at $38.7K a month, thin use can erase early margin fast.

4Margin69.5% CM

Here’s the quick math: Year 1 cogs and variable costs total 30.5%, so contribution margin is 69.5%; if travel or subcontractors creep up, break-even slips.

5Staff ramp6.3 FTE

Tie technician and support hiring to billable hours, not hope; the Year 1 base team is 6.3 FTE, and more headcount only works if hours keep rising.

6Cash runwayMonth 6

Hold cash through Month 6, because minimum cash bottoms at negative $352K; separate capex from operating break-even, and treat Month 4 break-even and 15-month payback as model outputs, not guarantees.