Car Wash Break-Even Revenue: Cover Overhead At $62K/Month

Fixed costs $28.0K/mo Base monthly costs

Contribution margin 88.5% After variable costs

Break-even revenue $31.6K Monthly revenue target

Break-even timing Month 2 Model break-even point

Break-even calculator

Test how monthly revenue, variable expenses, and fixed monthly costs drive break-even for a car wash.

Lean Base Full

Monthly revenue This is the sales line that has to cover direct costs and overhead. $ Slow month Peak month Variable expenses These rise with wash volume, mix, payment fees, and marketing. $ Lower costs Higher costs

Money available to cover fixed costs $307,188 $341,320 revenue - $34,132 variable expenses

Margin ratio

90%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly cost base break-even must cover. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which car wash expenses are fixed, variable, or stepped for break-even?

Cost classification

Break-even only works if fixed overhead, per-wash costs, and staffing steps are separated. Treating payroll or usage costs as flat can overstate margin and make Month 2 break-even look safer than it is.

Expense	Cost	Break-Even Treatment	Common Mistake
Facility Lease Payment	Fixed	Use $18,000 per month in the monthly overhead base.	Spreading lease over visits and hiding true rent risk.
Business Insurance	Fixed	Use $2,800 per month as fixed operating overhead.	Reducing insurance when wash volume drops.
Property Taxes	Fixed	Use $3,500 per month in break-even fixed costs.	Leaving property taxes below EBITDA in the model.
Cleaning Chemicals & Soaps	Variable	Apply the first-year rate of 3.0% of revenue, then use the forecast rate by year.	Using a flat dollar amount despite more visits.
Direct Utilities per Wash	Variable	Apply the first-year rate of 2.0% of revenue for wash-linked usage.	Treating all utilities as fixed monthly overhead.
Payment Processing Fees	Variable	Apply the first-year rate of 2.5% of revenue because fees move with sales.	Ignoring card fees when calculating contribution margin.
Customer Acquisition Marketing	Variable	Apply the first-year rate of 4.0% of revenue, then taper per the forecast.	Assuming growth costs disappear after opening.
Payroll	Semi-fixed	Model payroll in staffing steps as visits rise from 300 to 900 per day.	Holding labor flat while adding supervisors and staff.

How does break-even change from a lean car wash to a base case and a full-scale site?

Scenario table

Lean traffic can't absorb the fixed site load, and the base case still has no margin cushion. The full case is the only one that starts to cover payroll and site costs without a deep loss.

Planning assumptions only; actual results will move with traffic, pricing, staffing, and utilities.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean first-year case	$177K	$204K	$55K	-15%	-$82K	Highest break-even risk; variable costs outrun revenue.
Base Year 3 case	$341K	$341K	$78K	0%	-$78K	No cushion yet; break-even still needs a margin lift.
Full Year 5 case	$727K	$640K	$90K	12%	-$3K	Closest to break-even; payroll still keeps profit thin.

What breaks the break-even plan if traffic slows or costs rise?

Stress test

Year 1 has about $115K of monthly cushion above break-even, so the base plan can absorb normal noise. The risk is slower visits plus higher payroll and overhead, because that can shrink the cushion below one month of fixed costs.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$62K	$115K cushion	Healthy cushion, but fixed costs are heavy.
Revenue shortfall	Average visits per day fall 20%.	$62K	$79K cushion	Traffic softness trims the cushion fast.
Fixed-cost increase	Monthly fixed costs rise 10% to about $60.8K.	$69K	$109K cushion	Overhead pushes break-even higher, but the cushion stays wide.
Margin pressure	Variable expense rate rises to 15% from chemicals, water, card fees, and marketing.	$65K	$112K cushion	Fee and utility creep lift break-even, but not enough to break the plan.
Combined pressure	Average visits per day fall 35%, fixed costs rise 10%, and variable expense rate rises to 15%.	$72K	$44K cushion	Cushion falls below one month of fixed costs, so a bad month turns risky.

Should you sign the lease and order the tunnel only after the site can support break-even traffic and the cash trough?

Founder checklist

Yes. Test the site, equipment, staff, and cash plan against the model before you commit, because the business needs 300 visits a day in the first year, 900 by Year 5, and it hits a minimum cash point of -$2.118M in Month 11.

1Traffic Base300/day

Verify local traffic can support 300 visits per day in Year 1 so the site can reach break-even demand early.

2Fixed Load$27.0K/mo

Check that lease, insurance, taxes, software, maintenance, security, and admin stay near the modeled fixed cost load before you sign.

3Margin MixYear 1 mix

Confirm the wash mix can hold the modeled pricing and product mix so labor, chemicals, utilities, and payment fees leave enough contribution margin.

4Capacity Ramp900/day

Validate the tunnel, vacuums, and air systems can handle 900 visits per day by Year 5 without slowing throughput.

5Cash Trough-$2.118M

Plan enough cash for the Month 11 trough, when land, construction, equipment, and opening spend pull cash to the lowest point.

6Launch Staff6.5 FTE

Staff the opening team at 1 general manager, 1 assistant manager, 3 customer service staff, 2 detailing technicians, and 0.5 marketing FTE, and line up chemical and maintenance vendors before launch.