Automotive Locksmith Break-Even Analysis: $255K Monthly Revenue

Fixed costs $11.9K/mo Monthly overhead base

Contribution margin 54% After variable spend

Break-even revenue $22.0K/mo Sales needed monthly

Break-even timing Month 9 Model break-even point

Break-even calculator

Use this calculator to test monthly revenue, variable expenses, and fixed costs against break-even for an automotive locksmith.

Lean Base Full

Monthly revenue Revenue is the cash coming in before direct costs and overhead. $ Low revenue High revenue Variable expenses Use fuel, marketing, and other costs that rise with jobs. $ Low costs High costs

Money available to cover fixed costs $28,454 $34,700 revenue - $6,246 variable expenses

Margin ratio

82%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly cost base that break-even must cover. $ Low overhead High overhead

Break-even chart Revenue Total costs

Which automotive locksmith expenses are fixed, and which move with sales?

Cost classification

Break-even is only useful if steady overhead stays separate from job-linked spend. Here, fixed monthly overhead includes rent, insurance, and owner pay, while parts, fuel, and marketing move with revenue or customer acquisition.

Expense	Cost	Break-Even Treatment	Common Mistake
Office and Workshop Rent	Fixed	Include $2,500 per month in fixed monthly overhead from Month 1 through Month 60.	Treating rent as job-level spend when call volume rises.
Business Insurance	Fixed	Include $800 per month in fixed monthly overhead across the planning period.	Spreading insurance across each job and overstating variable burden.
Owner/Lead Locksmith Pay	Fixed	Include $6,250 per month based on the $75,000 annual salary and 1.0 FTE.	Leaving owner pay out and showing a false early break-even.
Technician Pay	Semi-fixed	Model payroll in hiring steps as junior, senior, fleet, and additional technicians are added.	Averaging technician pay across all jobs instead of adding payroll when capacity changes.
Key Blanks and Hardware Inventory	Variable	Model at 18% of first-year revenue, then reduce to 14% by the mature year.	Using one flat parts percentage after the service mix shifts.
Programming Equipment and Tools	Variable	Model recurring tool and programming usage at 8% of first-year revenue.	Putting every tool-related item into startup spending and missing ongoing usage.
Fuel and Vehicle Maintenance	Variable	Model at 12% of first-year revenue, tied to dispatched jobs and service miles.	Keeping fuel flat even when field calls increase.
Marketing and Customer Acquisition	Variable	Model at 8% of first-year revenue and cross-check against the $45 CAC assumption.	Budgeting ads only as a fixed monthly amount and ignoring CAC drift.

How does break-even change from a lean solo launch to a base plan and full staffing?

Scenario table

Break-even rises as fixed payroll and overhead rise, even though the fuller build improves margin. The lean solo setup is the easiest line to hit; the full team needs much more monthly revenue.

These are planning assumptions from the model, not a guarantee of actual trading results.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean solo launch	$22,037	$10,136	$11,900	54%	$0	Best fit for solo launch, but the cushion is thin.
Base Month 9 plan	$25,509	$11,734	$13,775	54%	$0	Use this as the Month 9 planning line; error room stays tight.
Full Year 2 staffing	$40,272	$16,914	$23,358	58%	$0	Higher payroll lifts the hurdle, so steady volume matters more.

What pressures an automotive locksmith past break-even?

Stress test

Base break-even sits at $25,509 a month with 46% variable expenses and a 54% contribution margin. Fewer lockout calls, pricier key fobs, higher fuel, or a 10% fixed-cost bump can push it off target fast.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$25,509	$0 gap	At plan, it only breaks even.
Revenue shortfall	Revenue falls 10%.	$25,509	$1,378 gap	Fewer calls can erase the monthly cushion.
Fixed-cost pressure	Fixed costs rise 10%.	$28,060	$2,551 gap	Rent, insurance, and admin costs push the hurdle up.
Margin pressure	Variable expenses rise to 51%.	$28,112	$2,603 gap	Higher fuel and pricier parts cut margin.
Combined pressure	Revenue falls 10%, fixed costs rise 10%, and variable expenses rise to 51%.	$30,923	$3,904 gap	Three hits at once can push the month into a loss.

What should you verify before buying another van or hiring the next technician?

Founder checklist

Before you add a van or a technician, prove the work can cover the break-even path. That means about 259 jobs a month, a $98.63 Year 1 ticket, and enough cash to survive the $673K low point in Month 18.

1Route Density259 jobs/mo

Verify booked work can reach about 259 jobs a month in a tight service area, because longer drive time and fuel burn can wipe out the margin fast.

2Ticket Mix$98.63

Confirm the Year 1 average ticket lands near $98.63 from the current job mix, or added payroll will outrun revenue per call.

3Supplier Terms54% CM

Keep total direct and variable costs near 46% of sales, so contribution stays around 54% and break-even stays believable.

4Dispatch Stack$45 CAC

Set up dispatch, call tracking, and active insurance and licensing before scaling ads, so you can compare booked jobs with the planned $45 CAC instead of guessing.

5Cash Cushion$673K

Protect cash for the Month 18 low point; minimum cash hits $673K, and the model excludes $238K of startup purchases, so the true need is higher.

6Hire Trigger$25.5K/mo

Delay the second technician until monthly revenue is above $25,509, because the extra payroll can turn growth into a cash drain before the route is dense enough.