Oyster Farming Break-Even Analysis: $98K Monthly Revenue Target

Fixed costs $34.5K/mo Base overhead

Contribution margin 83% After variable costs

Break-even revenue $41.6K/mo Monthly target

Break-even timing Month 17 Model breakeven

Break-even calculator

Use this to test how monthly oyster sales, direct costs, and fixed overhead affect break-even.

Lean Base Full

Monthly revenue Revenue is the pool that covers variable costs and fixed overhead. $ Low sales High sales Variable expenses These are direct costs that move with sales, like feed, packaging, commissions, and delivery. $ Low direct costs High direct costs

Money available to cover fixed costs $507,130 $611,000 revenue - $103,870 variable expenses

Margin ratio

83%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead the business must cover before profit starts. $ Low overhead High overhead

Break-even chart Revenue Total costs

Which oyster farm expenses stay fixed, and which move with harvest sales?

Cost classification

Break-even gets shaky when fixed overhead, harvest-linked costs, and staffing steps are mixed together. In this model, monthly fixed overhead starts at $34,500 before payroll, so every volume miss hits cash fast.

Expense	Cost	Break-Even Treatment	Common Mistake
Farm Lease Payments	Fixed	$15,000 monthly overhead from Month 1 through the model period.	Treating the lease as optional after launch.
Hatchery and Processing Facility Rent/Lease	Fixed	$8,000 monthly overhead that break-even revenue must cover.	Excluding facility rent from the break-even floor.
Utilities	Fixed	Modeled as $3,500 monthly overhead for farm and facilities.	Ignoring higher usage when processing volume rises.
Permitting and Compliance Fees	Fixed	$2,000 monthly overhead, not a one-time launch item.	Treating compliance as paid once and done.
Feed for Broodstock and Larvae	Variable	Modeled at 4.0% of first-year revenue and lower in later years.	Pricing feed as a flat annual budget.
Processing and Packaging Materials	Variable	Modeled at 6.0% of first-year revenue tied to processed output.	Undercounting packaging as harvest rises.
Sales Commissions	Variable	Modeled at 4.0% of first-year revenue, so it scales with sales.	Forgetting channel selling expense in margin math.
Farm Technicians and Processing Staff	Semi-fixed	Headcount rises by year as farm and processing capacity expands.	Hiring ahead of harvest demand and raising break-even too early.

How does break-even shift from a lean oyster farm to a full-scale one?

Scenario table

Break-even moves because sales scale rises faster than fixed overhead, while survival and pricing also improve. That gives the full build more cushion, even before you factor in any upside from better product mix.

Planning figures are model-based assumptions, not guarantees.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean Year 1 launch	$833,229	$146,649	$80,917	82.4%	$605,663	Break-even sits near $98,188, so this case still needs tight loss control.
Base Year 3 scale-up	$268,000,000	$416,805	$95,083	99.8%	$217,000,000	Break-even is near $112,600, so the sales base gives a wide cushion.
Full Year 5 buildout	$876,000,000	$125,000,000	$112,750	85.7%	$740,000,000	Break-even stays near $131,500, and scale makes fixed costs much easier to absorb.

What would push this oyster farm below break-even comfort?

Stress test

Year 1 has a wide operating cushion at an 82.4% contribution margin, but it can shrink fast if harvest revenue falls, overhead rises, or losses push the margin down. Watch pricing, mortality, harvest timing, and buyer commitments.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$98,188	$735,041 cushion	Year 1 sales sit far above break-even.
Revenue shortfall	Year 1 revenue falls by $100,000.	$98,188	$635,041 cushion	Every $100,000 miss cuts contribution by about $82,400.
Fixed-cost pressure	Monthly overhead rises by $10,000.	$243,819	$589,410 cushion	Higher rent, payroll, or compliance spend eats cushion fast.
Margin pressure	Contribution margin falls 1 point to 81.4%.	$99,407	$733,822 cushion	A small price or loss move pushes the hurdle up quickly.
Combined pressure	Year 1 revenue falls by $600,000, monthly overhead rises by $10,000, and margin drops 1 point.	$246,822	$13,593 gap	Delayed harvests and cost creep can flip the plan below break-even.

What should you verify before you lock the lease and processing spend for an oyster farm?

Founder checklist

Keep enough runway to absorb the Month 16 cash trough of about -$1.745 million, because the model carries about $80,917 in monthly fixed burn before setup capex. Don’t lock the lease or cold-chain spend until those operating gates clear.

1Cash CushionMonth 16 / -$1.745M

Confirm runway covers the Month 16 cash trough and the fixed burn that comes before break-even.

2Lease Load$15K/mo

Secure the farm lease only if the site can carry the $15,000 monthly lease inside the operating burn.

3Site Setup$80K / $2K / $150K

Verify water quality before the $80,000 monitoring spend, confirm permits before the $2,000 monthly compliance budget, and only then buy the $150,000 cold-chain vehicles.

4Seed Loss500K / 25.0%

Lock 500,000 purchased juveniles at $0.12 each, then test the 25.0% first-year mortality case against your retained hatchery flow.

5Margin Check83% CM

Year 1 sales keep about 83% after the 10.0% COGS and 7.0% variable load, so volume and yield matter more than small fee changes.

6Demand Crew40/30/20/10 / 10.0 FTE / $557K

Confirm buyers for the 40/30/20/10 product mix and stage hiring against the $557,000 Year 1 payroll and 10.0 FTE before you scale processing.