Bird Migration Tracking Service Monthly Break-Even: $123K Revenue

Fixed costs $18.5K/mo Overhead base

Contribution margin 71% After direct costs

Break-even revenue $135.3K/mo Year 1 threshold

Break-even timing Month 7 Cash turns first

Break-even calculator

Test monthly revenue, variable expenses, and fixed costs against break-even for a bird migration tracking service.

Lean Base Full

Monthly revenue Revenue drives the margin available to cover fixed costs. $ Slow start Strong pipeline Variable expenses These rise with each project, including telemetry hardware, cloud processing, travel, and lab analysis. $ Low direct cost High direct cost

Money available to cover fixed costs $345,990 $455,250 revenue - $109,260 variable expenses

Margin ratio

76%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead the margin must cover, including facilities, software, insurance, and staff. $ Tight overhead Heavy overhead

Break-even chart Revenue Total costs

Which expenses stay fixed, and which move with sales in this bird migration tracking service?

Cost classification

Break-even is only useful if each expense behaves the right way in the model. Here, project-linked hardware, cloud use, travel, and lab work should reduce contribution margin, while rent and core overhead sit below it.

Expense	Cost	Break-Even Treatment	Common Mistake
Research Facility Lease	Fixed	Include $9,500 per month in fixed overhead from Month 1 through Month 60.	Allocating rent to projects and making break-even look better when volume rises.
Professional Liability Insurance	Fixed	Include $1,200 per month as recurring overhead within the monthly break-even base.	Dropping it from break-even because it is not tied to billable hours.
Senior Field Biologist payroll	Semi-fixed	Model salary capacity in steps: $95,000 per FTE, with 2.0 FTE in the first year and higher FTE later.	Treating all field labor as variable per project instead of adding headcount in blocks.
GPS Telemetry Hardware Inventory	Variable	Charge against revenue at 14% in the first year, declining to 10% by the fifth year.	Treating device replacement and unit stock as fixed even though they scale with studies.
Cloud Data Processing and Storage	Variable	Charge usage against revenue at 5% in the first year, declining to 3% by the fifth year.	Putting cloud spend in fixed software overhead and overstating contribution margin.
Field Deployment Travel	Variable	Charge travel against project volume at 7% of revenue in the first year, declining to 5% by the fifth year.	Treating field travel as fixed when more deployments create more trips.
Specialized Lab Analysis	Variable	Charge lab work against revenue at 3% in the first year, declining to 1% by the fifth year.	Classifying contractor-style analysis hours as fixed overhead instead of project-linked work.

How does break-even shift from a lean pilot to a full bird migration workload?

Scenario table

Lean volume stays close to the line, so a small contract delay can push profit negative. The base case still runs a first-year loss, while the full workload builds a clear cushion as revenue scales faster than fixed overhead.

Planning assumptions only. Contract start dates, seasonality, and field access can move these break-even results.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean pilot	$123k	$36k	$97k	71%	-$10k	Near the line; a delay turns it negative.
Base Year 1 model	$131k	$38k	$97k	71%	-$4k	Small first-year loss, with Month 7 as the break-even marker.
Full Year 5 workload	$1.05m	$200k	$189k	81%	$662k	Strong cushion; the mature mix sits well past break-even.

What breaks the break-even plan if contracts slip or field costs run hot?

Stress test

Year 1 revenue is $1.577M against a $1.229M break-even, so the cushion is about $348K. Delayed contracts, higher travel, or heavier telemetry spend can erase that fast; each extra $10K of monthly overhead adds about $169K to annual break-even revenue.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$1.229M	$348K cushion	Year 1 clears break-even, but the buffer is modest.
Revenue shortfall	Year 1 revenue slips to $1.314M on delayed contracts.	$1.229M	$85K cushion	You still break even, but the margin for delay is thin.
Fixed-cost pressure	Monthly overhead rises by $10K from lease, software, or support.	$1.399M	$178K cushion	Small overhead creep quickly eats the Year 1 margin.
Margin pressure	Variable costs rise from 29% to 34% of revenue.	$1.323M	$254K cushion	Travel and telemetry spend push the break-even line higher.
Combined pressure	Year 1 revenue slips to $1.314M, overhead adds $10K a month, and variable costs rise to 34%.	$1.503M	$189K gap	The plan no longer clears the new floor.

What should the founder verify before locking the lease, hiring, and equipment spend?

Founder checklist

Do not commit until signed or highly probable work can support about $123K a month, and the Year 1 pricing and service mix still hold. Month 7 is the stress point, so cash and delivery capacity have to carry you that far.

1Signed Work$123K/mo

Verify the pipeline can turn into signed or highly probable work at about $123K a month before you lock in major fixed spend.

2Fixed Load$82.7K/mo

Check that lease, software, insurance, infrastructure, legal, marketing fees, and Year 1 wages stay below the revenue you can realistically book.

3Contribution71% CM

Use the Year 1 mix to confirm the model keeps about 71% contribution margin after 14% telemetry inventory, 5% cloud, 7% travel, and 3% lab costs.

4Team Capacity45 hrs

Confirm each active customer can absorb about 45 billable hours a month and the opening team can carry that load before you add payroll above Year 1 staffing.

5Cash Runway$272K min

Hold enough cash to reach the Month 7 low point, because minimum cash is $272K and break-even lands in Month 7.

6Gear Ready$325K gear

Verify the telemetry stock, computing cluster, field vehicle, and ground station are ready before lease and marketing ramp-up spend, or the launch window slips.