Brake And Exhaust Repair Break-Even: $41K Monthly Revenue

Fixed costs $33.1K/mo with payroll

Contribution margin 88.3% after variable costs

Break-even revenue $37.5K/mo monthly target

Break-even timing Month 4 opening ramp

Break-even calculator

Use this to test whether monthly revenue covers direct costs and shop overhead for a brake and exhaust repair business.

Lean Base Full

Monthly revenue Revenue is the cash in that can cover variable costs and overhead. $ Lower sales Higher sales Variable expenses These are direct costs tied to parts, supplies, and card fees. $ Tighter costs Higher costs

Money available to cover fixed costs $56,525 $66,500 revenue - $9,975 variable expenses

Margin ratio

85%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead your margin has to absorb. $ Lower overhead Higher overhead

Break-even chart Revenue Total costs

Which expenses are fixed, and which move with sales for a brake and exhaust shop?

Cost classification

Break-even gets reliable only when job-linked costs stay out of fixed overhead. Use parts, payment fees, and supplies in contribution margin first, then compare leftover dollars to rent, software, insurance, payroll, and other monthly overhead.

Expense	Cost	Break-Even Treatment	Common Mistake
Facility Rent	Fixed	Include $7,500 per month in fixed overhead for the relevant planning range.	Spreading rent across jobs and making margin look weaker.
Business Insurance	Fixed	Include $750 per month below contribution margin.	Treating insurance as job-linked because risk rises with volume.
Shop Management Software	Fixed	Include $350 per month as recurring overhead.	Putting software in variable expense without a per-job charge.
Brake Parts Cost	Variable	Deduct 7.0% of first-year revenue before calculating contribution margin.	Leaving parts in overhead and overstating break-even margin.
Exhaust Parts Cost	Variable	Deduct 6.0% of first-year revenue before fixed overhead.	Using the same parts rate for brake and exhaust work.
Payment Processing Fees	Variable	Deduct 2.5% of revenue as each paid job closes.	Ignoring card fees when estimating revenue needed to break even.
Utilities	Semi-variable	Start with the modeled $1,200 monthly base, then test added usage if bay hours rise.	Treating all utilities as fixed when compressors, lifts, and lighting run longer.
Technician Payroll	Semi-fixed	Model salary in steps as technician staffing rises from 1.0 FTE to 3.0 FTE.	Treating technician payroll as purely variable per repair order.

How does break-even shift from lean to full shop utilization for this brake and exhaust repair shop?

Scenario table

Break-even improves as bay use, technician coverage, and higher-value diagnostic and upgrade work lift margin. The lean case is already past break-even, and the full-shop case adds the widest cushion.

Planning figures only; real results will move with repair mix, labor coverage, and shop utilization.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean shop utilization	$941k	$183k	$331k	80.5%	$427k	Already above break-even, but the cushion is thinner.
Base shop utilization	$1.545m	$286k	$410k	81.5%	$849k	Past break-even with a stronger margin buffer.
Full shop utilization	$2.197m	$398k	$475k	81.9%	$1.324m	Best cushion, as long as labor and bay flow keep pace.

What pushes this brake and exhaust shop below break-even?

Stress test

Year 1 break-even is about $411k against $941k planned sales, so the base plan has room. The weak spots are fewer brake jobs, a lower average ticket, parts inflation, overtime, and slow bay use.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$411k	$530k cushion	Healthy cushion if volume and ticket size hold.
Revenue shortfall	Year 1 sales drop 20% to about $753k.	$411k	$342k cushion	Still above break-even, but the cushion shrinks fast.
Fixed-cost pressure	Fixed costs rise 10% to about $364k.	$452k	$489k cushion	Overhead creep pushes the hurdle higher.
Margin pressure	Variable expenses rise from 19.5% to 24.5% of sales.	$438k	$503k cushion	Parts inflation cuts contribution margin and delays payback.
Combined stress	Sales drop 20%, variable expenses rise to 24.5%, and fixed costs rise 10%.	$482k	$271k cushion	The shop still clears break-even, but the operating cushion falls to about $204k before exclusions.

Can this brake and exhaust shop hit Month 4 break-even before you sign the lease and buy the lifts?

Founder checklist

Yes, but only if the shop can keep 8 visits a day, hold fixed overhead to $10.8K a month before payroll, and fund the $828K cash need by Month 2. Month 4 break-even is believable only when labor, parts, and equipment are ready before the first ramp-up spend.

1Demand Proof8/day

Confirm the shop can hold 8 visits a day in Year 1, or 2,400 visits over 300 open days, because Month 4 break-even needs steady bay traffic, not a launch spike.

2Fixed Load$10.8K/mo

Lease rent is $7,500 a month and the listed fixed overhead is $10.8K before payroll, so the site has to carry that load before labor is added.

3Contribution88% margin

Keep brake parts near 7.0% of brake revenue and exhaust parts near 6.0% of exhaust revenue, and watch fees and shop supplies, because that is what keeps contribution strong.

4Staffing Ramp4.5 FTE

The Year 1 staffing plan needs 1.0 lead technician, 1.0 technician, 1.0 service advisor, and 0.5 office admin, or the 8-visits-a-day target will bottleneck.

5Cash Cushion$828K

The model calls for $828,000 minimum cash in Month 2, so check reserves before you lock in capex and payroll burn.

6Launch Setup$88K capex

Fund and install the two lifts, diagnostics, compressor, specialty tools, furniture, IT, signage, and waste oil system before ramp-up spend starts.