Sustainable Packaging Break-Even Analysis: About $70K/Month

Fixed costs $55.0K Monthly base

Contribution margin 89%–93% After variable costs

Break-even revenue $60.4K Monthly target

Break-even timing Month 1 Launch month

Break-even calculator

Use this calculator to test how monthly revenue, variable costs, and fixed overhead shape break-even for sustainable packaging.

Lean Base Full

Monthly revenue Revenue is the pool that pays direct costs and fixed overhead. $ Lower sales Higher sales Variable expenses These are direct costs that rise with sales, like shipping, commissions, and production costs. $ Lower costs Higher costs

Money available to cover fixed costs $512,937 $589,583 revenue - $76,646 variable expenses

Margin ratio

87%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead the business has to cover before profit starts. $ Lean overhead Heavier overhead

Break-even chart Revenue Total costs

Which sustainable packaging expenses are fixed, and which move with sales?

Cost classification

Break-even only works if each expense lands in the right bucket. Treat unit materials, freight, and sales-linked fees as variable, while rent and base payroll stay fixed within the monthly planning range.

Expense	Cost	Break-Even Treatment	Common Mistake
Bioplastic Film Material	Variable	Use $0.05 per compostable mailer in unit economics before contribution margin.	Treating material spend as overhead instead of a per-unit input.
Recycled Paperboard	Variable	Use $0.10 per recycled cardboard box because spend rises with units produced.	Blending paperboard into fixed plant expense and overstating margin.
Outbound Shipping & Fulfillment	Variable	Apply 8.0% of first year revenue, then reduce by forecast year as modeled.	Treating freight as fixed when it moves with sales volume.
Sales Commissions & Digital Marketing	Variable	Apply 5.0% of first year revenue as a sales-linked expense in break-even.	Locking commissions into fixed overhead and hiding customer acquisition pressure.
Office Rent	Fixed	Use $8,000 per month as fixed overhead for the relevant planning range.	Spreading rent per unit and making margin look volume-dependent.
Salaried Payroll	Fixed	Use $39,583 per month in the first year for base salaries in operating break-even.	Putting management salaries below contribution margin as if they scale with each order.
Factory Utilities Allocation	Semi-variable	Split the usage-linked factory allocation from base utilities before calculating contribution.	Classifying all utilities as fixed and missing usage creep as production rises.
Machine Depreciation	Semi-fixed	Model as capacity-linked overhead that changes in steps when equipment needs expand.	Treating equipment-related overhead as a direct per-unit expense at every volume level.

How does break-even move from a lean launch mix to full-scale packaging production?

Scenario table

Higher volume lifts revenue faster than fixed costs, so the break-even cushion improves as the mix scales. Still, freight, sales spend, and plant overhead keep the margin from being purely volume-driven.

Planning case only; one-time equipment, inventory, and setup spend are excluded unless modeled separately.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch case	$589.6k	$123.4k	$55.0k	79.1%	$411.2k	Strong cushion; launch risk stays manageable if freight holds.
Base wholesale case	$1.43m	$274.3k	$75.4k	80.8%	$1.08m	Break-even is well covered, so focus shifts to freight and pricing.
Full-scale production case	$2.61m	$456.0k	$82.1k	82.5%	$2.07m	Largest cushion; overhead and shipping still need tight control.

What breaks the break-even plan for sustainable packaging?

Stress test

Year 1 has a wide cushion: monthly revenue is about $5.896M against break-even near $695K. The main risks are slower B2B orders, higher raw material or freight costs, and adding payroll before repeat demand is proven.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$695K	$5.201M cushion	Break-even is far below plan revenue.
Revenue shortfall	Monthly sales fall 25% to about $4.422M.	$695K	$3.727M cushion	Slower B2B orders still leave room.
Fixed-cost pressure	Fixed costs rise 20% to about $660K.	$835K	$5.061M cushion	Added overhead trims cushion, not survival.
Margin pressure	Contribution margin drops from 79.1% to 70.0%.	$786K	$5.110M cushion	Higher raw material or freight costs matter here.
Combined pressure	Sales fall 25%, margin drops to 70.0%, and fixed costs rise 20%.	$943K	$3.479M cushion	This is the tightest case, so demand timing and cost control matter most.

What should you verify before you lock manufacturing capacity for sustainable packaging?

Founder checklist

Don’t lock the lease, equipment, or raw-material buy until the Year 1 unit math and B2B demand can carry the fixed load. Here’s the quick check: 2.15M planned units, $0.10 mailers, $0.19 boxes, $0.34 fillers, $0.40 wraps, $1.75 inserts, and about $15.4K a month before added hires.

1Demand Proof2.15M units

Verify signed or highly qualified B2B demand covers the full Year 1 volume before you buy more capacity.

2Unit Margin91%-95% CM

Check each SKU stays near its stated cost and price, because the margin spread only works if the unit math holds.

3Base Burn$15.4K/mo

Confirm the core overhead of rent, software, utilities, insurance, legal, R&D, and supplies stays covered before you add any more fixed costs.

4Hiring Ramp$70K/mo

Hold the Month 13 and Month 19 hires until monthly revenue is above $70K, or the payroll ramp will outrun demand.

5Cash Cushion$1.253M

Keep the Month 1 minimum cash need funded before you commit, because capex, inventory, and payroll all hit before volume matures.

6Capacity Setup$250K + $75K

Only buy the manufacturing equipment and raw material inventory after supplier lead times, minimum order sizes, and warehouse space fit the 2.15M Year 1 unit plan.