Used Car Dealership Break-Even Analysis: About 3 Cars Per Month

Fixed costs $18.8K/mo Core overhead

Contribution margin 90% After variable costs

Break-even revenue $20.9K/mo Monthly target

Break-even timing Month 1 Launch month

Break-even calculator

This calculator tests how monthly revenue, variable expenses, and fixed costs set the break-even point for a used car dealership.

Lean Base Full

Monthly revenue Gross sales and add-on revenue set the cash available to cover fixed costs. $ Slow month Peak month Variable expenses Reconditioning, prep, marketing, and commissions rise with each sale. $ Light costs Heavy costs

Money available to cover fixed costs $1,239,693 $1,362,300 revenue - $122,607 variable expenses

Margin ratio

91%

Covers fixed costs

Yes

Fixed monthly costs Rent, payroll, and overhead are the monthly base the margin must cover. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which used car dealership expenses are fixed, and which move with sales?

Cost classification

Break-even is only useful if inventory-linked expenses stay separate from overhead. Here’s the quick math: rent is $15,000/month either way, while reconditioning moves at 3.0% of first-year revenue.

Expense	Cost	Break-Even Treatment	Common Mistake
Dealership rent	Fixed	Use $15,000/month as overhead in the monthly break-even base.	Don’t tie rent to units sold.
Utilities	Semi-fixed	Start with the $2,500/month baseline, then review when lot hours or service bay use changes.	Don’t treat all utility spend as per-car.
Business insurance	Fixed	Use $1,500/month as recurring overhead across the planning range.	Don’t bury insurance in gross margin.
Software subscriptions	Fixed	Use $800/month as stable monthly overhead.	Don’t scale subscriptions with every sale.
Payroll	Semi-fixed	Use $33,750/month in the first year, then step up as full-time equivalent staffing rises.	Don’t classify all wages as variable.
Marketing and advertising	Variable	Model at 3.5% of first-year revenue because spend is tied to sales activity.	Don’t assume every ad dollar is fixed.
Sales commissions	Variable	Model at 3.0% of first-year revenue and keep it separate from base salaries.	Don’t include base salaries here.
Reconditioning and certification	Variable	Model at 3.0% of first-year revenue as an inventory-linked selling expense.	Don’t treat reconditioning as overhead.

How does break-even shift from lean to base to full volume for a used car dealership?

Scenario table

The dealer clears break-even in all three cases because sales gross margin stays strong while rent and payroll are mostly fixed. As volume rises, the profit cushion grows, but staffing and prep costs still move up with the ramp.

Planning cases only; actual break-even will move with inventory mix, reconditioning, and staffing.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean opening ramp	$545k	$55k	$65k	90%	$426k	Clears break-even, but cushion is still thinest here.
Base Year 3 ramp	$1.36m	$123k	$75k	91%	$1.16m	Break-even risk stays low, and the cash cushion grows.
Full Year 5 ramp	$2.36m	$191k	$89k	92%	$2.08m	Strong cushion; the main risk is keeping volume and staffing aligned.

What breaks the break-even plan if sales slow or costs run hot?

Stress test

Here’s the quick math: $56.25k in monthly fixed costs divided by a 9% sales margin after variable costs puts break-even near $625k. With Year 1 revenue at about $545k a month, the base plan starts with an $80k gap.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$625,000	$80,000 gap	Actual sales trail break-even.
Revenue shortfall	Monthly revenue falls 10%.	$625,000	$134,500 gap	A small sales dip widens the gap fast.
Fixed-cost pressure	Dealership rent rises from $15,000 to $18,000 per month.	$658,333	$113,333 gap	Higher rent pushes the line higher fast.
Margin pressure	Reconditioning, marketing, and commissions push variable costs to 95% of revenue.	$1,125,000	$580,000 gap	Overruns above plan erase the cushion.
Combined pressure	Revenue falls 10%, rent rises to $18,000 per month, and variable costs reach 95% of revenue.	$1,185,000	$694,500 gap	Small misses stack into a wide gap.

Before you sign the lease, what should you verify so this dealership can reach break-even?

Founder checklist

Test the opening plan against the model, not the sales pitch. If sourcing, staffing, and cash line up with a $56.3K monthly fixed load and a 90% contribution margin, the first year can clear break-even fast.

1Inventory Flow250 units

Confirm sourcing can support 250 vehicle sales in Year 1 at a $25,000 average ticket, or the revenue plan breaks before the lot opens.

2Fixed Load$56.3K/mo

Make sure rent, utilities, insurance, software, admin, security, and payroll stay near this monthly burn, or break-even moves out.

3Margin Mix90% CM

Check that reconditioning, prep, marketing, and commissions stay near 10% of revenue so each sale still funds the fixed base.

4Staff Ramp7.0 FTE

Verify the opening team can cover 7.0 full-time roles without slowing reconditioning, sales handoff, or finance-and-insurance closes.

5Cash Cushion$899K

Hold at least this much cash in the launch month, since capex is front-loaded and Month 1 is the low point.

6Launch Run-Rate21/mo

Confirm the opening pipeline can support about 21 vehicle sales a month, plus attached products, so the Month 1 break-even call is real.