Slime Business Break-Even Analysis: $12K Monthly Revenue Target

Fixed costs $8.7K/mo Year 1 base

Contribution margin 80.5% After variable costs

Break-even revenue $10.8K/mo Monthly target

Break-even timing Month 38 First break-even

Break-even calculator

Test monthly revenue, direct costs, and fixed costs against break-even for a slime business.

Lean Base Full

Monthly revenue Higher sales create more margin to cover fixed costs. $ Lower sales Higher sales Variable expenses These are direct costs that rise with each sale. $ Lower costs Higher costs

Money available to cover fixed costs $28,945 $35,000 revenue - $6,055 variable expenses

Margin ratio

83%

Covers fixed costs

Yes

Fixed monthly costs These monthly costs stay on the books even if sales dip. $ Lower fixed Higher fixed

Break-even chart Revenue Total costs

Which expenses are fixed and which move with toy slime sales?

Cost classification

Break-even only works if revenue-linked expenses stay in contribution margin and stable monthly bills stay in fixed overhead. Misclassify shipping, supplies, or payroll, and Month 38 break-even can look safer than it is.

Expense	Cost	Break-Even Treatment	Common Mistake
Raw Materials & Packaging	Variable	Use 8.0% of revenue in the first year, falling to 6.0% by the mature year.	Treating batch supplies as fixed overhead.
Postage & Carrier Fees	Variable	Include 5.0% of revenue in the first year contribution margin calculation.	Ignoring shipping margin loss on small orders.
Marketing & Advertising Spend	Variable	Model 4.0% of revenue and reconcile it against the separate $12,000 first-year marketing budget.	Double counting paid spend or missing it entirely.
E-commerce & Payment Processing	Variable	Deduct 2.5% of revenue in the first year before calculating contribution margin.	Leaving platform and card fees out of margin.
Rent for Production Space	Fixed	Carry $1,500 per month in fixed overhead from Month 1 through Month 60.	Signing a lease before order proof exists.
Website Platform Subscriptions	Fixed	Include $150 per month as fixed overhead, separate from payment processing fees.	Confusing subscription charges with transaction fees.
Office Supplies	Semi-variable	Use the $75 monthly baseline, then add reorder needs as shipment volume rises.	Skipping a buffer for labels, tape, and packing supplies.
Founder and Assistant Labor	Semi-fixed	Use $6,458 per month in the first year: $60,000 founder salary plus 0.5 FTE at $35,000.	Hiring before batch volume supports payroll.

How much does break-even move as this slime business goes from lean to fully staffed and marketed?

Scenario table

Break-even rises fast as you add payroll and ad spend. The lean setup hits break-even at $2,739 a month, but the base and full cases need $10,762 and $12,004 because fixed costs do most of the work.

Planning assumptions only; actual break-even will move with pricing, mix, and sell-through.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean owner-run setup	$2,739	$534	$2,205	80.5%	$0	Lowest fixed load, so the break-even line is easiest to hit.
Base staffed setup	$10,762	$2,099	$8,663	80.5%	$0	Payroll lifts the target, so sales must stay steady.
Full staffed and marketed setup	$12,004	$2,341	$9,663	80.5%	$0	Extra marketing spend raises the bar, so the cushion gets thinner.

What pushes this slime business past break-even?

Stress test

The plan is tight. At $12,004 in monthly revenue and $9,663 in fixed costs, there’s no real cushion, so a 10% sales drop, a $1,000 overhead bump, or a 1-point margin hit moves break-even fast.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$12,004	$0 cushion	No cushion; a small miss turns red.
Revenue shortfall	Monthly revenue falls 10%.	$12,004	$966 gap	Weak repeat orders can erase the month.
Fixed-cost bump	Fixed costs rise by $1,000 per month.	$13,246	$1,242 gap	Overhead creep lifts the hurdle fast.
Margin squeeze	Variable expense rises 1 point.	$12,155	$151 gap	Postage or packaging pressure cuts the cushion.
Combined pressure	Monthly revenue falls 10%, fixed costs rise $1,000, and variable expense rises 1 point.	$13,397	$2,593 gap	This stack pushes the plan well past break-even.

What should you verify before signing a lease or buying bulk slime supplies?

Founder checklist

Before you sign a lease, buy bulk supplies, or add staff, make sure the model can hit break-even orders with real demand. With a Year 1 AOV of about $18.96, an 80.5% contribution margin, and a $8.7K monthly fixed base, you need about 567 orders a month to hold the line.

1Demand Test567/mo

Verify monthly order volume can reach break-even before you lock in rent or bulk inventory.

2Fixed Load$8.7K/mo

Check that rent, software, insurance, supplies, and base payroll do not outrun early sales.

3Margin Check80.5% CM

Confirm raw materials, packaging, postage, ads, and processing still leave enough per order to cover overhead.

4Staff Ramp$6.5K/mo

Verify the first sales wave can cover founder and production labor before you add more help.

5Cash Cushion$524K

Make sure you can survive the long ramp to Month 38, when the model first breaks even.

6Repeat Pull25% / 0.4

Track whether repeat buyers reach 25% of new customers and order 0.4 times per month, or paid ads will do too much work.