Compost Tea Brewing Break-Even: $47K Monthly Sales Target

Fixed costs $9.25K/mo Base overhead

Contribution margin 64% After variable costs

Break-even revenue $14.4K/mo Monthly target

Break-even timing Month 2 Launch break-even

Break-even calculator

Test monthly revenue against direct costs and fixed overhead to see where break-even sits.

Lean Base Full

Monthly revenue Revenue is the pool that pays direct costs and overhead. $ Low revenue High revenue Variable expenses These rise with each sale, like ingredients, packaging, shipping, and fees. $ Low costs High costs

Money available to cover fixed costs $50,750 $72,500 revenue - $21,750 variable expenses

Margin ratio

70%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead break-even has to cover. $ Low overhead High overhead

Break-even chart Revenue Total costs

Which compost tea brewing expenses are fixed, and which move with sales?

Cost classification

Classify recurring operating costs before solving break-even; a wrong label can make Month 2 break-even look safer than it is. Keep the $258,000 startup equipment and build-out out unless depreciation or debt service is switched on.

Expense	Cost	Break-Even Treatment	Common Mistake
Brewing facility lease	Fixed	Carry $4,500 per month as overhead in the monthly break-even base.	Spreading rent per bottle and assuming it falls when units dip.
Insurance and liability	Fixed	Include $850 per month as a stable operating expense from Month 1 through Month 60.	Leaving it out because it does not touch production directly.
Salaried payroll	Semi-fixed	Use $255,000 in first-year salaries, then step up as the operations manager and added production staffing come online.	Modeling all labor as variable and missing headcount step-ups.
Ingredients and packaging	Variable	Apply per-unit materials such as compost base, nutrients, bottles, caps, labels, tote liners, and pallets by product line.	Averaging all products and hiding the higher tote and specialty formula load.
Direct brewing and handling labor	Variable	Treat direct brewing, pumping, precision brewing, lab technician, and filtration labor as unit-linked COGS.	Calling production labor fixed when batch volume drives hours.
Payment fees and sales commissions	Variable	Apply first-year rates of 3.5% for payment fees and 3.0% for commissions against sales revenue.	Using gross revenue as contribution before selling fees are removed.
Refrigerated shipping and logistics	Semi-variable	Model the first-year rate at 8.0% of revenue, then adjust as route density improves in later years.	Treating delivery and cold handling like fixed van overhead.
Utilities, maintenance, and lab testing	Semi-variable	Scale facility utilities, equipment maintenance, and quality lab testing with production activity, not just calendar months.	Freezing these expenses even as batches, routes, and testing volume rise.

How does break-even change from a lean launch to base scale and full scale in a compost tea business?

Scenario table

Break-even rises as payroll and support roles grow, but revenue grows faster than the fixed load. Here’s the quick math: the lean plan clears about $51.0k/month, the base plan about $73.2k, and the full plan about $84.9k.

Planning assumptions only; mix, freight, and labor can move break-even.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch validation	$72,500	$29,167	$30,500	59.8%	$12,833	About $51.0k/month break-even; sales are above it, but the cushion is still narrow.
Base small commercial scale	$174,833	$67,625	$44,875	61.3%	$62,333	About $73.2k/month break-even; this is the cleanest proof point for small commercial scale.
Full route-dense scale	$319,000	$116,750	$53,833	63.4%	$148,417	About $84.9k/month break-even; higher volume gives the best cushion if routes stay dense.

What breaks the break-even plan for this compost tea business?

Stress test

The launch clears break-even on paper, but the cushion is thin. If monthly contribution slips below $30,500, the model turns red fast, and refrigerated logistics, packaging, batch labor, and sparse local routes are the first pressure points.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$47,400	$25,100 cushion	The opening month has a small cushion.
Revenue shortfall	Monthly revenue drops by $25,100 to $47,400.	$47,400	$0 cushion	Any further sales dip creates a loss.
Fixed-cost increase	Fixed overhead rises by $16,100 a month to $46,600.	$72,500	$0 cushion	Extra rent, payroll, software, insurance, or admin wipes out the cushion.
Margin pressure	Contribution margin drops from 64.3% to 42.1%.	$72,500	$0 cushion	Higher refrigerated shipping, packaging, or batch labor can erase the cushion.
Combined pressure	Revenue falls to $47,400, fixed overhead rises by $16,100, and margin slips to 42.1%.	$110,700	$38,200 gap	Softer sales and higher costs together create a clear loss.

Can you prove the buyer base, margin, and cash cushion before you commit to the brewing lease?

Founder checklist

Don’t sign the lease or buy the line until repeat orders can cover the operating floor. This model needs a $47.4K monthly revenue base, a $255K Year 1 salary load, and $1.104M of cash to survive the Month 2 low point.

1Buyer Floor$47.4K/mo

Verify signed or repeat buyers can cover at least $47.4K per month before you commit, and keep the first mix broad enough to sell bottles, formulas, inoculants, concentrates, and totes.

2Payroll Load$255K

Make sure the Year 1 salary load can be paid from operating cash, because four roles are live at launch and the operations manager starts in Month 13.

3Capex Timing$258K

Phase the $258K equipment plan only if bottling, storage, or delivery capacity is not already tight, since front-loading all capex can choke working capital.

4Route Cost8.0%

Keep refrigerated shipping near the Year 1 8.0% assumption, because any route creep cuts contribution margin and pushes break-even out.

5Pack CostsLocked prelaunch

Lock bottle, cap, label, tote liner, pallet, and insulated shipping costs before launch, because pack slippage hits every unit sold.

6Cash Runway$1.104M

Verify you can carry the $1.104M Month 2 cash trough and still fund the 22-month payback path, because this model is sensitive to early overspend.