Break-Even Revenue for a Sustainable Baby Store: $185K/Month

Fixed costs $13.9K/mo Launch overhead

Contribution margin 82% After variable costs

Break-even revenue $16.9K/mo Monthly target

Break-even timing Month 31 Model break-even

Break-even calculator

Test monthly revenue, variable expenses, and fixed costs to see where this eco-friendly baby store reaches break-even.

Lean Base Full

Monthly revenue Revenue sets the pool that has to cover fixed costs after direct costs. $ Low sales High sales Variable expenses Use direct costs that move with each order, like product cost, shipping, and card fees. $ Lean costs Higher costs

Money available to cover fixed costs $20,800 $25,000 revenue - $4,200 variable expenses

Margin ratio

83%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly cost base that contribution margin has to cover. $ Lower base Higher base

Break-even chart Revenue Total costs

Which expenses are fixed and which move with sales in this online baby products store?

Cost classification

Break-even gets unreliable when monthly overhead and order-level costs are blended. Separate fixed spend from variable drag so each sale shows its real contribution before salaries, software, and base operating costs.

Expense	Cost	Break-Even Treatment	Common Mistake
Website Hosting & Platform Fees	Fixed	Include $500 per month in overhead.	Treating it as order-driven.
Software Subscriptions	Fixed	Include $300 per month in overhead.	Ignoring renewals.
Wholesale Product Cost	Variable	Deduct from revenue before contribution margin.	Using retail price as margin.
Inventory Holding Cost	Variable	Deduct as stock drag tied to sales volume.	Leaving stock drag out.
Fulfillment & Shipping	Variable	Deduct per sale at the modeled percentage.	Assuming free shipping is free.
Payment Processing Fees	Variable	Deduct per transaction before break-even math.	Missing percentage drag.
Packaging Materials Base Stock	Fixed	Include $250 per month in overhead.	Treating every box as incremental.
Paid Ads	Semi-variable	Model from the $15,000 first-year budget and $30 CAC.	Assuming spend always scales profitably.

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

Scenario table

The lean case stays loss-making, the base case gets near break-even, and the full case has the strongest cushion. Lower variable expense rates help, but the bigger fixed staff plan still raises the sales bar.

These are planning assumptions, not guarantees.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch case	$185k	$33k	$151k	82%	-$176k	Sales barely cover the fixed load.
Base growth case	$293k	$48k	$246k	83.8%	$22k	A small cushion, but a dip can flip it back.
Full scale case	$405k	$58k	$347k	85.7%	$1.625m	Widest cushion, if hiring and repeat buy stay on plan.

What pushes break-even farther out for this baby products store?

Stress test

The plan is most exposed to a sales miss and earlier hiring. A 10% revenue shortfall leaves about an $18,500 gap, and moving to Year 3 staffing raises break-even revenue to $293,000.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$185,000	$0 gap	Break-even lands in Month 31, so timing is tight.
Revenue shortfall	Sales run 10% below plan.	$185,000	$18,500 gap	A modest top-line miss wipes out the launch cushion.
Fixed-cost increase	Fixed monthly costs rise to the Year 3 run rate.	$293,000	$108,000 gap	Earlier hiring pushes the break-even bar much higher.
Margin pressure	Fulfillment and payment costs rise 1 point.	$187,300	$2,300 gap	Small fee creep matters because the margin is thin.
Combined pressure	Sales miss plan by 10%, hiring starts early, and margin slips 1 point.	$305,000	$120,000 gap	Weak conversion, higher shipping, and early hiring can delay break-even.

What should the founder verify before buying the first $20K of inventory?

Founder checklist

Do not place the first $20K inventory order until demand, CAC, and repeat buying all look strong enough to carry fixed burn. The store also has to protect the Month 33 cash floor, or break-even is just a spreadsheet result.

1Demand proof$20K inventory

Verify enough traffic or preorders to justify the first inventory buy, because unsold stock ties up cash before break-even is real.

2CAC ceiling$30 CAC

Keep paid acquisition near the Year 1 target and inside the $15K marketing budget, or ad spend will outrun the plan.

3Repeat buyers25% to 55%

Confirm repeat customers climb from 25% of new customers in Year 1 toward 55% by Year 5, because repeat orders ease CAC pressure.

4Margin mix82% gross margin

Check that wholesale, holding, shipping, and card fees still leave about 82% gross margin, since that funds ads, payroll, and overhead.

5Ops timingMonth 13 / $6K

Do not add customer support before Month 13 or spend the $6K warehouse or 3PL setup until order flow can use it.

6Cash floor$13.9K/mo / $448K

Verify you can carry about $13.9K a month of fixed burn and still protect the $448K cash floor in Month 33, while keeping the $15K website build, $7K branding, and $4K packaging setup outside break-even math.