Fitness Subscription Box Break-Even Analysis: $23K Monthly Revenue

Fixed costs $19.2K/mo Base overhead

Contribution margin 83% After variable costs

Break-even revenue $23.1K/mo Revenue to cover

Break-even timing Month 7 Model break point

Break-even calculator

Use this calculator to test monthly revenue, direct box costs, and overhead against break-even.

Lean Base Full

Monthly revenue Revenue sets the cash available to cover fixed costs after direct box costs. $ Lower sales Higher sales Variable expenses Direct product, packaging, shipping, and payment fees move with each box. $ Lower costs Higher costs

Money available to cover fixed costs $17,699 $21,325 revenue - $3,626 variable expenses

Margin ratio

83%

Covers fixed costs

Yes

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

Break-even chart Revenue Total costs

Which expenses are fixed vs variable for a fitness subscription box?

Cost classification

Break-even is only reliable when per-box costs stay below the box price and true monthly overhead stays out of margin. Here, product, shipping, and payment fees move with sales; software, rent, admin, insurance, and retainers set the monthly hurdle.

Expense	Cost	Break-Even Treatment	Common Mistake
Product Cost & Packaging	Variable	Subtract 10.0% of revenue in the first year, falling to 8.0% by Year 5, before covering overhead.	Treating inventory as fixed instead of per-box margin drag.
Inbound Shipping	Variable	Include 2.0% of revenue in the first year, falling to 1.0% by Year 5, as part of landed box economics.	Burying freight inside product sourcing and overstating margin.
Outbound Fulfillment & Shipping	Variable	Apply 3.5% of revenue in the first year, falling to 2.5% by Year 5, against each shipped subscription box.	Ignoring carrier pressure when order volume rises.
Payment Processing Fees	Variable	Apply 1.5% of revenue in the first year, falling to 1.3% by Year 5, across subscriptions and add-on transactions.	Modeling card fees as overhead software.
Software, Office, Admin, Insurance, Legal & Accounting	Fixed	Use $4,200 per month from Month 1 through Month 60 as the baseline overhead that contribution margin must cover.	Spreading monthly overhead per box too early.
Payroll	Semi-fixed	Use first-year payroll of $130,000 per year, or about $10,833 per month, then step up as planned hires start.	Hiring ahead of subscriber volume and moving break-even out.
Marketing Budget	Semi-variable	Model the first-year budget at $50,000 with $45 customer acquisition cost; spend can flex, but not perfectly with each shipment.	Assuming marketing scales cleanly with revenue.

How does break-even change from a lean launch mix to a full-scale subscription box?

Scenario table

As the box mix shifts up-market, contribution margin improves, but payroll and marketing also rise. That means break-even is driven by both pricing and fixed-cost load, not just by sales.

Planning assumptions only; actual break-even will move with mix, fees, and staffing.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch mix	$231k	$39k	$192k	83%	$0	At break-even, there’s no cushion for cost creep.
Base Year 3 mix	$622k	$92k	$530k	85%	$0	Stronger margin helps, but fixed costs still set the floor.
Full Year 5 mix	$942k	$121k	$821k	87%	$0	Margin improves, but payroll and marketing keep the bar high.

What breaks this fitness subscription box break-even plan?

Stress test

Break-even is tight: the Year 1 plan only works at about $231k of revenue and 83% contribution margin. A 10% revenue miss, a 20% fixed-cost jump, or a 5-point margin drop each pushes it back into the red.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$231k	$0 cushion	There is no real buffer if CAC or churn slips.
Revenue miss	Revenue falls 10% to $208k.	$231k	$19k gap	A modest top-line miss turns profit into a small loss.
Fixed cost rise	Fixed costs increase 20% to $230k.	$278k	$47k gap	Overhead growth needs a much bigger subscriber base.
Margin squeeze	Variable expenses rise from 17% to 22%.	$246k	$15k gap	Fulfillment above 35% or product and packaging above 10% can break the margin.
Combined stress	Revenue is $208k, contribution margin is 78%, and fixed costs are $230k.	$295k	$87k gap	CAC above $45 and weak churn replacement can drive a deep loss fast.

What should you verify before you lock inventory, hiring, and fulfillment for a fitness subscription box?

Founder checklist

Before you commit, test whether demand, unit cost, and cash all hold up against the break-even model. If CAC, conversion, or shipping slips, the Month 7 break-even and Month 2 cash plan stop being real.

1Launch demand2.0% / 60.0%

Track visitor-to-trial and trial-to-paid results against the Year 1 plan before you scale spend, because weak conversion makes every later assumption harder to hit.

2CAC test$45 CAC

Run small paid tests and verify customer acquisition stays near $45, or the marketing budget will buy fewer subscribers than the model needs.

3Unit margin83% CM

Lock supplier quotes, pack sample boxes, and test shipping so product cost, inbound freight, outbound fulfillment, and payment fees stay near 17% of revenue in Year 1.

4Staffing rampMonth 13

Keep the team lean until volume supports it, since the marketing manager and customer support roles do not start until Month 13 and operations waits until Month 25.

5Fixed burn$15.0K/mo

Make sure monthly fixed burn stays near the model, and keep the $20K inventory buy plus the $69K one-time startup spend separate from ongoing break-even math.

6Cash reserve$844K

Verify you can carry the Month 2 cash low of $844K through the launch dip, because that reserve has to cover operations before the business reaches break-even.