Bathroom Partition Installation Break-Even: About $46K/Month

Fixed costs $6.3K/mo Base overhead

Contribution margin 71% After variable costs

Break-even revenue $8.8K/mo Monthly target

Break-even timing Month 6 First positive month

Break-even calculator

Use this calculator to test monthly revenue, variable expenses, and fixed costs against break-even for a bathroom partition installation service.

Lean Base Full

Monthly revenue Revenue is the pool that covers direct costs and overhead. $ Lower sales Higher sales Variable expenses Direct costs like supplies, logistics, insurance, and sales commissions rise with sales. $ Lower costs Higher costs

Money available to cover fixed costs $142,944 $193,167 revenue - $50,223 variable expenses

Margin ratio

74%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead and staffing base the margin must cover. $ Lower overhead Higher overhead

Break-even chart Revenue Total costs

Which bathroom partition installation expenses are fixed, and which move with sales?

Cost classification

Break-even gets noisy when job-level spending is blended with overhead. Treat materials, disposal, freight, and project insurance as revenue-linked, while rent and admin stay fixed and salaried crews rise in staffing blocks.

Expense	Cost	Break-Even Treatment	Common Mistake
Partition panels, installation supplies, and hardware	Variable	Model as revenue-linked job spending; installation supplies and hardware start at 12.0% of revenue in the first year.	Treating materials like overhead instead of tying them to awarded jobs.
Disposal, freight, and logistics fees	Variable	Include with job-level direct spending; disposal and logistics fees start at 5.0% of revenue in the first year.	Leaving hauling and freight out of gross margin.
Project liability insurance	Variable	Classify as revenue-linked project coverage; the model starts it at 4.0% of revenue in the first year.	Putting project coverage in fixed overhead and overstating contribution margin.
Lead installer and installation technician payroll	Semi-fixed	Plan payroll in crew blocks; lead installers move from 1.0 to 2.0 FTE in the second year, and technicians rise from 2.0 to 3.0 FTE.	Treating all installer labor as variable when payroll is committed before every hour is billed.
Warehouse and office rent	Fixed	Use $4,500 per month in monthly break-even overhead across the planning range.	Allocating rent to each job and hiding the true monthly hurdle.
Estimating software, admin, communications, and licensing	Fixed	Use the recurring monthly amounts: software $350, admin $600, utilities and communications $550, and licensing $250.	Ignoring smaller fixed bills because each one looks immaterial.
Vehicle fuel and maintenance	Semi-variable	Start with the $1,200 monthly base, then watch route density because drive time and service geography change spend.	Assuming every new job adds the same truck expense.
Annual marketing budget and bid pipeline CAC	Semi-fixed	Plan the first-year marketing budget at $15,000, with customer acquisition cost at $450 as bid pipeline pressure.	Calling marketing fully variable when spend is committed before leads convert.

How does break-even change from lean to base to full schedule for a bathroom partition installer?

Scenario table

Break-even moves fast as volume and staffing rise. Lean is the floor, base starts to cover overhead, and full schedule turns the cushion into real profit.

Planning cases only. These figures help frame break-even risk, but they are not guarantees.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean service run-rate	$455K	$132K	$323K	71%	$0	Near break-even; any slip in job flow pushes loss risk up.
Base operating crew	$716K	$208K	$323K	71%	$185K	Healthy cushion; one crew can cover overhead and still earn profit.
Full commercial schedule	$1,355K	$374K	$485K	72.4%	$497K	Strong surplus; added crews and sales support still leave room above break-even.

What breaks the break-even plan for a bathroom partition installation service?

Stress test

The plan clears break-even, but the cushion can vanish fast if bids slow, freight or hardware costs rise, or payroll grows before sales do. A 36% revenue drop wipes out the $261K cushion.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$455,000	$261,000 cushion	Base sales stay well above break-even.
Revenue shortfall	Revenue falls 36% from the base plan.	$455,000	$0 cushion	The cushion is fully used up.
Fixed-cost increase	Fixed overhead rises $5,000.	$525,000	$191,000 cushion	Rent, fuel, and payroll push the hurdle higher.
Margin pressure	Variable costs rise 3 percentage points.	$475,000	$241,000 cushion	Freight, hardware, fuel, and commissions squeeze margin.
Combined pressure	Revenue falls 36%, fixed overhead rises $5,000, and margin slips 3 points.	$482,000	$27,000 gap	Slow awards plus higher cost commitments push the plan back below break-even.

What should you verify before you sign the warehouse lease and buy the fleet?

Founder checklist

Don’t lock the warehouse lease or buy the fleet until booked work, margin, and cash still clear the break-even line. In this model, break-even lands by Month 6, but only if pipeline, crew load, and CAC hold near the Year 1 assumptions.

1Pipeline Proof$71.6K/mo

Verify measurement-to-quote turns site visits into signed work across new installs, ADA (Americans with Disabilities Act) retrofits, and repairs, because that pipeline has to support about $71.6K a month before the lease and fleet spend feel safe.

2Fixed Base$31.1K/mo

Add rent, payroll, software, utilities, and licensing, and make sure the fixed base stays covered even in a thin month.

3Margin Stack71% CM

Check that the 29% variable stack from supplies, logistics, insurance, and referral commissions still leaves enough contribution to pay overhead.

4Crew Hours42/28/8 hrs

Schedule crews around 42-hour new installs, 28-hour ADA retrofit jobs, and 8-hour repairs so hiring grows with utilization, not ahead of it.

5Cash Buffer$741K min

Hold cash above the Month 2 low point before you fund the $85K truck phase, $12K tool kits, $4.5K laser systems, and $25K initial inventory.

6CAC Check$450 CAC

Keep customer acquisition cost near the Year 1 assumption as the $15K marketing budget scales and the Month 13 sales hire comes on, or growth will outrun booked work.