B2B Business Break-Even Analysis: Month 9 Revenue Plan Guide

Fixed costs $49.1K/mo Recurring overhead base

Contribution margin 80.5% After variable costs

Break-even revenue $61.0K/mo Monthly sales target

Break-even timing Month 9 Launch ramp point

Break-even calculator

Test how monthly revenue, variable expenses, and fixed costs interact to show when this B2B business breaks even.

Lean Base Full

Monthly revenue Revenue sets the pool that has to cover direct costs and fixed overhead. $ Low sales High sales Variable expenses These are the direct costs that rise as sales grow. $ Low costs High costs

Money available to cover fixed costs $94,000 $120,000 revenue - $26,000 variable expenses

Margin ratio

78%

Covers fixed costs

Yes

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

Break-even chart Revenue Total costs

Which expenses are fixed and which move with sales in this B2B break-even model?

Cost classification

Break-even works only if fixed overhead stays separate from costs that rise with sales, orders, clients, or headcount. Here, Month 9 break-even depends on clean contribution margin, not one blended overhead bucket.

Expense	Cost	Break-Even Treatment	Common Mistake
Office Rent	Fixed	Include $7,500 per month from Month 1 through Month 60 in fixed overhead.	Linking rent to sales volume instead of capacity.
Software Subscriptions	Semi-fixed	Start with $4,300 per month for platform and operating software, then step up only when licenses or packages expand.	Treating every software dollar as usage-based.
Business Insurance	Fixed	Use $700 per month as recurring overhead within the current planning range.	Dropping small fixed items from break-even math.
Cost of Products Purchased from Suppliers	Variable	Apply as a direct revenue-linked charge, starting at 10.0% in the first year and falling to 8.0% by the fifth year.	Using revenue without subtracting product cost.
Inbound Logistics and Warehousing Fees	Variable	Apply to sales volume, starting at 3.0% in the first year and declining to 2.0% by the fifth year.	Burying warehousing flow charges inside rent.
Payment Processing Fees	Variable	Deduct from each sale, starting at 2.5% in the first year and easing to 2.1% by the fifth year.	Counting gross sales as contribution margin.
Outbound Shipping and Packaging	Variable	Model against shipped order volume, starting at 4.0% in the first year and improving to 3.0% by the fifth year.	Treating shipping like general overhead.
Sales Development Representative Payroll	Semi-variable	Scale with capacity: 0.5 FTE in the first year, then 1.0, 2.0, 3.0, and 4.0 FTE through the fifth year.	Lumping payroll, CAC, and shipping together.

How does break-even move from a lean launch to a full ramp?

Scenario table

Break-even rises when fixed payroll and marketing step up faster than margin improves. Here, the lean launch clears the bar at about $766k a month, the base case at about $834k, and the full ramp at about $1.151m.

Planning case only: these figures are assumptions, not guarantees.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch	$766k	$149k	$616k	80.5%	$0	Tight cushion; a small miss pushes it under.
Base case break-even	$834k	$163k	$672k	80.5%	$0	Matches the Month 9 break-even signal with little room for error.
Full ramp	$1.151m	$213k	$937k	81.5%	$0	Higher revenue needed, but margin gives a bit more cushion.

What breaks this break-even plan if revenue slips or costs run hot?

Stress test

Early on, there’s almost no cushion: break-even is about $834k a month, and cash bottoms near $529k in Month 9. In Year 2, higher fixed costs can lift break-even to about $1.151M even before any margin pressure.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$834k/month	$0 gap	No cushion at launch.
Revenue shortfall	Revenue lands 10% below plan.	$834k/month	$83k gap	Any miss starts eating cash fast.
Fixed-cost pressure	Year 2 marketing rises to $233k/month and payroll to about $546k/month.	$1.151M/month	$317k gap	Fixed costs outrun sales unless growth accelerates.
Margin pressure	Supplier, warehousing, processing, shipping, and packaging costs rise to 21.5% of revenue.	$856k/month	$22k gap	Gross profit shrinks, so each sale covers less overhead.
Combined pressure	Revenue slips 10%, Year 2 fixed costs stay high, and variable costs rise to 21.5% of revenue.	$1.195M/month	$361k gap	One miss becomes a cash squeeze fast.

What should the founder verify before locking in lease, hires, and equipment spend?

Founder checklist

Verify the pipeline, pricing, and cash plan before you sign anything. The model only works if Year 1 demand can support $834k/month, AOV stays near $1,131, and you can fund the $529k cash need through Month 9 break-even.

1Pipeline Demand$834k/mo

Verify the pipeline can support at least $834k/month in Year 1 revenue before you lock in spend, because closed deals must arrive fast enough to fund the Month 9 break-even point.

2AOV Gate$1,131 AOV

Verify average order value stays near $1,131 before scaling paid acquisition, or the same revenue target will need too many deals.

3CAC Control$450 to $380

Verify CAC holds near $450 in Year 1 and $380 in Year 2, so customer growth does not outrun payback.

4Margin Stack80.5% CM

Verify products, inbound, payment, and shipping costs stay near 19.5% of sales, which leaves about 80.5% to cover fixed costs.

5Cash Load$529k

Verify you can fund the $529k minimum cash need and about $54.7k/month of fixed burn, including $180k/year CEO pay, because $310k of capex is cash at risk and break-even lands in Month 9.

6Repeat Ramp35% / 18 mo

Verify repeat customers reach 35% of new customers and last 18 months, so the Month 4 to Month 13 hiring ramp matches real order flow.