Functional Water Break-Even Analysis: ~$65K Monthly Revenue

Fixed costs $11.5K/mo monthly burn

Contribution margin 67% after variable costs

Break-even revenue $17.2K/mo cover the burn

Break-even timing Month 1 launch month

Break-even calculator

Test monthly revenue, variable expenses, and fixed costs against break-even for a functional water brand.

Lean Base Full

Monthly revenue Revenue sets the pool that covers variable costs and fixed costs. $ Low sales High sales Variable expenses These are direct costs that rise with each sale. $ Light costs Heavy costs

Money available to cover fixed costs $673,227 $982,167 revenue - $308,940 variable expenses

Margin ratio

69%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead the margin must cover. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which functional water expenses are fixed, and which move with sales?

Cost classification

The model shows break-even in Month 1, so functional water cost classification has to be tight. Keep fixed burn separate from bottle-level inputs and revenue-linked fees, or break-even will look safer than cash reality.

Expense	Cost	Break-Even Treatment	Common Mistake
Office and lab rent	Fixed	Use $6,500 per month in fixed burn from Month 1 through Month 60.	Tying rent to bottle volume instead of monthly capacity.
Regulatory and legal compliance	Fixed	Use $1,500 per month as recurring overhead in the break-even base.	Spreading compliance across units and hiding true monthly burn.
Bottle-level packaging	Variable	Apply $0.08 per BPA-free PET bottle plus $0.04 for label and cap to each unit sold.	Blending packaging with freight and losing unit margin clarity.
Formula ingredient mixes	Variable	Apply ingredient expense by formula: $0.11 to $0.22 per unit, plus $0.05 purified water base.	Using one average ingredient rate and ignoring formula-specific margin.
Co-packing toll fee	Variable	Charge $0.15 per unit as direct production expense in contribution margin.	Treating co-packing as overhead instead of per-bottle production spend.
Production revenue-linked fees	Variable	Apply QA testing 0.5%, inbound freight 1.5%, inventory reserve 0.5%, pallet fees 0.2%, and production insurance 0.3% to revenue.	Leaving freight outside break-even and overstating gross margin.
Distribution, digital marketing, and retail slotting	Semi-variable	Model first-year rates at 6.0%, 10.0%, and 3.0% of revenue, then update as channel terms firm up.	Treating slotting as fixed overhead instead of sales-channel friction.
Payroll ramp	Semi-fixed	Add staffing in steps as roles start and headcount grows, including support rising from 0.0 FTE in Year 1 to 3.0 FTE in Year 5.	Modeling all payroll as flat when hiring follows operating scale.

How does break-even shift from a lean launch to a full rollout?

Scenario table

Break-even is covered in all three cases, and the cushion widens as distributor, promotion, and slotting pressure eases from 19% of revenue in the first year to 11% in the mature year. The real risk is locking in scale before sell-through is proven.

Planning figures only; actual results will move with sell-through, pricing, and channel spend.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch mix	$422.9k	$154.7k	$41.3k	63.4%	$226.9k	Positive in Month 1, but the cushion is still tied to tight promo control.
Base scale mix	$982.2k	$318.1k	$51.9k	67.6%	$612.2k	Stronger cushion, so break-even risk drops if reorder demand stays steady.
Full rollout mix	$1.90M	$521.6k	$55.7k	72.6%	$1.32M	Best cushion, but only after volume is proven and channel costs stay disciplined.

What breaks first if sales soften or bottle economics tighten?

Stress test

The plan sits about $3.58M above monthly break-even now, but that cushion shrinks fast if sales soften or bottle economics slip. Co-packing, ingredient mix, freight, marketing, and slotting are the pressure points.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$647K	$3.58M cushion	Revenue comfortably clears fixed burn.
Revenue shortfall	Monthly sales fall 20% from plan.	$647K	$2.74M cushion	Demand can dip a lot before EBITDA breaks.
Fixed-cost pressure	Fixed monthly costs rise by $270K.	$1.07M	$3.16M cushion	Extra overhead still fits, but the buffer is thinner.
Margin pressure	Contribution per bottle falls to $0.32.	$4.23M	$0 cushion	A small fee or mix slip wipes out the buffer.
Combined pressure	Monthly sales fall 20%, fixed costs rise by $270K, and contribution per bottle falls to $0.32.	$6.97M	$3.59M gap	The model turns fragile fast when all three move together.

What should you verify before you commit to scaling this functional water launch?

Founder checklist

Before you lock in scale spend, verify the co-packer can cover first-year volume, the bottle math still leaves room after freight and media, and cash can absorb Month 1 outlays. The model works only if capacity, channel pull, and payroll ramp stay in sync.

1Plant capacity129K/mo

Verify one co-packer can handle about 129K bottles a month, based on 1.55M Year 1 units, so production does not break before demand does.

2Unit margin66%-68% CM

Verify the loaded unit cost still leaves room after the $0.08 bottle, $0.04 label and cap, $0.15 co-packing toll, and the $0.11 to $0.22 ingredient mix.

3Cash reserve$1.194M

Verify opening cash covers the Month 1 minimum cash need of $1.194M, because inventory and payroll hit before repeat orders do.

4Payroll ramp$40.0K/mo

Verify monthly fixed load stays near $40.0K once the Sales Director starts in Month 3 and the Marketing Manager in Month 6, or break-even slips fast.

5Capex gate$162K

Verify the $162K launch build is staged and funded before you commit to racking, a delivery van, lab gear, molds, IT, ecommerce, and brand work.

6Channel pull$5.075M

Verify paid media can earn the full Year 1 revenue plan of $5.075M, and do not add more storage or distribution space until sell-through proves it.