Sustainable Fashion Break-Even Analysis: About $327k/Month

Fixed costs $7.3K/mo Recurring base

Contribution margin 81% After variable costs

Break-even revenue $9.0K/mo Cover monthly base

Break-even timing Month 17 Model break-even point

Break-even calculator

Use this calculator to test how monthly revenue, direct costs, and fixed overhead shape break-even for an eco-focused clothing brand.

Lean Base Full

Monthly revenue Revenue sets the pool that covers direct costs first, then fixed costs. $ Low sales High sales Variable expenses These are direct costs that rise with each sale, like materials, shipping, and processing. $ Light cost Heavy cost

Money available to cover fixed costs $66,800 $80,000 revenue - $13,200 variable expenses

Margin ratio

84%

Covers fixed costs

Yes

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

Break-even chart Revenue Total costs

Which expenses are fixed and which move with sales for this apparel business?

Cost classification

Break-even gets shaky when sales-linked charges are treated like overhead, or when hiring steps are averaged too early. Here, Month 17 break-even depends on separating revenue percentages, monthly overhead, and FTE-driven salaries.

Expense	Cost	Break-Even Treatment	Common Mistake
Sustainable Raw Materials & Manufacturing	Variable	Model as 9.5% of revenue in the first year, falling to 7.5% by Year 5. This reduces contribution margin on every order.	Treating materials as a monthly budget instead of a sales-linked charge.
Quality Control & Certifications	Variable	Apply 1.0% of revenue in the first year through Year 3, then 0.9% and 0.8%. It moves with shipped product volume.	Leaving certification work out of gross margin math.
Shipping & Sustainable Packaging	Variable	Use 6.0% of revenue in the first year, improving to 4.0% by Year 5. It should scale with order flow.	Counting packaging as fixed overhead and overstating break-even margin.
Payment Processing Fees	Variable	Use 2.5% of revenue in the first year and Year 2, then step down to 2.2% by Year 5. Each checkout carries this drag.	Only modeling the fixed gateway fee and missing card fees.
Core Monthly Overhead	Fixed	Include e-commerce subscriptions, cloud hosting, legal and accounting, insurance, content retainer, office/admin/utilities, and fixed gateway fees totaling $7,300 per month.	Using annual totals in a monthly break-even model.
Team Salaries by FTE	Semi-fixed	Model salaries in hiring steps as FTEs rise. First-year wages are $180,000, or $15,000 per month, before later roles ramp.	Smoothing headcount too much and hiding cash needs before Month 18.
Marketing Budget and CAC	Semi-variable	Use the $50,000 first-year marketing budget with a $45 customer acquisition cost. Spend is planned, but customer volume depends on acquisition efficiency.	Treating all marketing as fixed while ignoring CAC drift.
One-Time Setup and Seed Inventory	Fixed	Exclude startup setup and seed inventory from monthly operating break-even unless management explicitly spreads them into the monthly target.	Loading launch outlays into monthly break-even and overstating required sales.

How does break-even change from a lean launch to base and fuller scale for this clothing brand?

Scenario table

As the brand scales, the margin cushion improves, but fixed payroll, marketing, and fulfillment costs rise too. Break-even only gets easier if repeat orders and paid acquisition keep pace with that bigger cost base.

Planning assumptions only; these scenario figures are not guarantees.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch - Year 1 mix	$306k	$58k	$265k	81.0%	-$17k	Below break-even, so cash risk is still high.
Base case - Year 2 mix	$505k	$91k	$408k	82.0%	$6k	Slightly above break-even, so it starts funding team growth.
Full scale - Year 3 mix	$907k	$153k	$617k	83.1%	$136k	Well above break-even, but repeat demand has to hold.

What breaks the break-even plan for this sustainable fashion brand?

Stress test

Base Year 1 breaks even at about $327k a month on an 81% contribution margin and $265k of fixed costs. A 10% sales miss, a $50k fixed-cost step-up, or a 5-point margin hit can each push the business back into monthly loss.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$327k/month	$0 gap	There is no room for cost creep.
Revenue shortfall	Revenue lands 10% below plan.	$327k/month	$26k gap	A small demand miss turns into a monthly loss.
Fixed costs up	Fixed costs rise by $50k per month.	$388k/month	$61k gap	Overhead growth widens the break-even hole fast.
Margin pressure	Variable expense rises from 19.0% to 24.0%.	$348k/month	$21k gap	Freight, returns, or fabric minimums hit margin fast.
Combined pressure	Revenue is 10% below plan, variable expense rises to 24.0%, and fixed costs add $50k.	$414k/month	$91k gap	Weak CAC and slow repeat orders leave little buffer.

What should a sustainable fashion founder verify before signing inventory, hiring, and fulfillment commitments?

Founder checklist

Before you sign inventory, fulfillment, or hires, prove the model can sell at a $99.28 Year 1 AOV and keep contribution margin at 81.0%. If CAC, stock timing, or staffing slip, the Month 17 break-even and Month 18 cash trough move out.

1Pricing Proof$99.28 AOV

Confirm buyers will pay the blended Year 1 order value, because that price point drives the revenue path to break-even.

2CAC Test$45 CAC

Check paid acquisition stays near the Year 1 CAC assumption, since $50,000 of budget only buys about 1,111 customers at that level.

3Margin Load81.0% CM

Keep raw materials, certifications, shipping, and payment fees at the modeled 19.0% of revenue so contribution can cover fixed costs.

4Payroll Ramp$15k/mo

Hold staffing to the Year 1 plan until sales can carry the monthly payroll load, then add the Month 13 roles.

5Cash Buffer$626k min

Keep runway for the Month 18 cash low point, because break-even lands in Month 17 and the model still needs this cushion.

6Fulfillment Trigger$10k setup

Delay the warehouse setup and bulk fulfillment spend until order volume can use the Month 4 seed stock, so fixed cost does not outrun demand.