Smart Home Security Break-Even Analysis: $194K Monthly Revenue

Fixed costs $16.3K/mo Pure overhead

Contribution margin 71% After variable costs

Break-even revenue $23.0K/mo Revenue target

Break-even timing Month 31 Model break-even

Break-even calculator

Use this calculator to test monthly revenue, variable expenses, and fixed costs against break-even for a connected home security business.

Lean Base Full

Monthly revenue Sales set the pool that has to cover direct costs and overhead. $ Low sales High sales Variable expenses Use direct costs that move with installs, monitoring, and device support. $ Low direct cost High direct cost

Money available to cover fixed costs $123,753 $174,300 revenue - $50,547 variable expenses

Margin ratio

71%

Covers fixed costs

Yes

Fixed monthly costs These monthly overhead costs must be covered by contribution margin. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which smart home security expenses are fixed, variable, semi-variable, or semi-fixed?

Cost classification

Break-even gets unreliable when revenue-linked items are parked in overhead. Here, monitoring fees, hardware recovery, installation labor, and cloud usage should move with sales volume, while rent stays fixed.

Expense	Cost	Break-Even Treatment	Common Mistake
Office Rent & Utilities	Fixed	Use $7,500 per month across the planning range.	Spreading rent per customer and making it look variable.
Software Licenses & Subscriptions	Fixed	Use $3,000 per month unless the model adds usage tiers.	Tying all software spend to each new account.
CEO, Engineering, Marketing, and Support Payroll	Semi-fixed	Model payroll in staffing steps as full-time equivalents increase by year.	Assuming salaries rise smoothly with monthly sales.
Annual Marketing Budget	Semi-variable	Model Year 1 spend at $750,000, then connect customer volume to $250 CAC.	Treating all marketing as fixed brand spend.
Hardware & Inventory Cost Recovery	Variable	Apply 12.0% of revenue in the first year, falling to 8.0% by Year 5.	Putting hardware pass-through in overhead instead of revenue-linked expense.
Central Monitoring Fees	Variable	Apply 7.0% of revenue in the first year, falling to 5.0% by Year 5.	Treating monitoring as fixed overhead.
Installation Labor Costs	Variable	Apply 8.0% of revenue in the first year, falling to 4.0% by Year 5.	Treating technician labor as overhead instead of job-linked expense.
Cloud Hosting & Data Storage	Variable	Apply 2.0% of revenue in the first year, falling to 1.2% by Year 5.	Ignoring usage growth from video, alerts, and stored data.

How does break-even change from a lean launch to a full smart home security rollout?

Scenario table

As payroll and marketing scale up, fixed monthly costs rise from about $138K to $555K, so break-even revenue climbs even though variable costs ease from 29% to 18.2%. That’s why the lean test clears lower than the full rollout.

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

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch test	$194K	$56K	$138K	71%	$0	Low overhead keeps the target lower, but there is little cushion.
Metro rollout base case	$444K	$105K	$339K	76.4%	$0	Margin improves, yet the bigger payroll base still needs steady volume.
Multi-team expansion full case	$679K	$124K	$555K	81.8%	$0	Best unit economics, but the higher fixed base makes growth non-negotiable.

What breaks the break-even plan for smart home security?

Stress test

Year 1 break-even is $194K a month. If overhead steps up to $232K and margin slips to 71%, break-even rises to $326K; CAC above $250, slower installs, lower attach, and hardware returns make that miss easier.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$194K	$0 gap	Base case leaves no cushion.
Revenue shortfall	CAC rises above $250 and installs slow.	$194K	$0 gap	Every $1 below $194K adds about $0.71 of loss before fixed costs.
Fixed-cost increase	Fixed overhead rises to the Year 2 run-rate of $232K a month.	$314K	$120K gap	The next overhead step adds $120K to the monthly target.
Margin pressure	Variable load stays at 29% instead of improving.	$326K	$132K gap	Holding margin at 71% adds about $12K versus the fixed-cost step.
Combined pressure	Year 2 overhead and Year 1 margin hit together.	$326K	$132K gap	At $194K revenue, monthly operating profit would be about negative $94K.

What should you verify before you commit to inventory, hiring, and marketing for smart home security?

Founder checklist

Before you buy inventory or hire, prove installs can carry the 12% hardware, 7% monitoring, 8% labor, and 2% hosting loads at about $250 CAC. Break-even doesn't land until Month 31, and cash bottoms near $1.542M in Month 30.

1Launch Demand$250 CAC

Prove you can win customers near a $250 acquisition cost before you unlock the $750K first-year marketing budget.

2Hardware Recovery12.0%

Verify vendor pricing keeps hardware and inventory recovery inside the 12% assumption, because every install depends on it.

3Service Margin7.0% + 2.0%

Test central monitoring fees at 7% and cloud storage at 2%, since these recurring costs drive subscription margin.

4Install Capacity8.0%

Plan technician coverage around the 8% installation labor load, and stage the Month 13 support hires only when job flow can keep them busy.

5Fixed Load$16.3K/mo

Keep office, software, legal, insurance, admin, and training near the $16.3K monthly run rate, with rent and utilities capped at $7.5K.

6Runway Cushion$1.542M

Hold enough cash for the $1.542M minimum gap around Month 30, because the model does not reach break-even until Month 31.