Window Tinting Break-Even Analysis: About $278K Monthly Revenue

Fixed costs $15.9K/mo Base monthly overhead

Contribution margin 73.5% After variable costs

Break-even revenue $21.7K/mo Monthly revenue target

Break-even timing Month 7 Model payback point

Break-even calculator

Enter monthly revenue, variable expenses, and fixed costs to see the break-even point.

Lean Base Full

Monthly revenue Revenue is the cash coming in before direct costs and overhead. $ Low sales High sales Variable expenses These move with sales, like film, shipping, marketing, and fuel. $ Low costs High costs

Money available to cover fixed costs $22,557 $30,690 revenue - $8,133 variable expenses

Margin ratio

73%

Covers fixed costs

Yes

Fixed monthly costs These are the monthly costs you pay even if sales slow down. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which window tinting expenses are fixed, and which move with sales?

Cost classification

Your Month 7 break-even only holds if fixed overhead and sales-linked expenses are split cleanly. Treat film, fuel, and percentage marketing as variable, or the model will overstate margin as job volume grows.

Expense	Cost	Break-Even Treatment	Common Mistake
Workshop rent	Fixed	Use $2,500 per month in fixed overhead for the full planning range.	Spreading rent per job and hiding the real monthly hurdle.
Utilities, insurance, accounting, software, hosting, and tools maintenance	Fixed	Use the combined $1,750 per month as recurring overhead.	Dropping small monthly bills because each one looks minor.
Owner / General Manager salary	Fixed	Include the $80,000 annual salary as fixed operating labor.	Excluding owner pay and creating a false break-even point.
Lead Installation Technician salary	Fixed	Include the $60,000 annual salary as fixed production labor.	Treating the lead installer as variable when salary is committed.
Installation Technician salary	Semi-fixed	Add capacity in steps: starts Month 4 at $45,000 salary and 0.75 FTE in the first year.	Modeling technician labor as perfectly smooth with sales.
Sales & Customer Service Rep salary	Semi-fixed	Add from Month 7 at $40,000 salary and 0.5 FTE in the first year.	Forgetting the step-up right when lead volume needs handling.
Cost of window film materials	Variable	Apply 15% of revenue in the first year, then use the annual assumption.	Treating film rolls, waste, or rework as fixed overhead.
Marketing, advertising, fuel, and service maintenance	Variable	Apply first-year rates of 7% for marketing and 3% for service vehicle usage.	Locking percentage marketing or fuel into fixed overhead.

How does break-even change as a window tinting shop moves from lean to base to full?

Scenario table

Same film, shipping, marketing, and fuel logic keeps variable costs at 26.5% of sales, so break-even moves mostly with fixed payroll and shop overhead. Base staffing is the anchor; lean delays hires, and full adds capacity only when bookings support it.

Planning assumptions only: these figures help compare break-even risk, but they are not guarantees and exclude taxes, capex, debt service, and owner draws.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch shop	$21.6k	$5.7k	$15.9k	73.5%	$0.0k	Lower payroll gets it to break-even, but there is no cushion.
Base staffed shop	$30.7k	$8.1k	$20.4k	73.5%	$2.2k	This matches the model's Month 7 break-even path with a small cushion.
Full capacity shop	$50.0k	$13.3k	$32.0k	73.5%	$4.7k	Added capacity creates more cushion, but only if bookings keep the payroll busy.

What pressures break-even most for a window tinting shop?

Stress test

The plan is most fragile when bookings slow, rework rises, or overhead creeps up. With $278,000 of break-even revenue and $204,000 of fixed costs, a small margin miss or a $1,000 monthly cost bump moves the target fast.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$278,000	$0 gap	Repeat discounts or failed installs are early warnings.
Revenue shortfall	Annual revenue runs $25,000 below plan.	$303,000	$25,000 gap	Slow quote response or fewer booked jobs can erase the cushion.
Fixed-cost pressure	Fixed overhead rises by $1,000 per month.	$294,327	$16,327 gap	Overhead creep compounds because it hits every month.
Margin pressure	Variable expenses rise from 26.5% to 30.0% of revenue.	$291,429	$13,429 gap	Rework, callbacks, and waste raise the break-even line fast.
Combined pressure	Annual revenue runs $25,000 below plan and variable expenses rise to 30.0% of revenue.	$316,429	$38,429 gap	A sales miss plus weaker margins can push the plan out of break-even.

Can this window tinting founder prove demand, capacity, and cash before signing the lease and hiring installers?

Founder checklist

Don’t sign the lease or hire installers until the model clears about $278K a month in revenue and the Month 2 cash low of $841K. Break-even is modeled for Month 7, so early demand and cash both have to hold.

1Demand Proof$278K/mo

Verify the booking pipeline can reach this monthly revenue before you take on the rent and payroll base.

2Rent Load$2.5K/mo

Check that the workshop rent is supportable on its own, because it stacks fast once staffing and overhead start.

3Job Capacity4/12/40 hrs

Match crew capacity to Year 1 auto, residential, and commercial job times so work does not bottleneck sales.

4Film Cost16.5%

Keep film materials near 15% plus 1.5% shipping and handling, or margin drops before overhead is covered.

5Acquisition Cost$10K / $150 CAC

Test whether the Year 1 marketing budget can still buy enough jobs at a $150 CAC while ad spend runs at 7% of revenue.

6Cash Buffer$841K

Keep this reserve through Month 2, and only launch with warranty, rework, booking flow, pricing rules, and service mix set, because break-even does not land until Month 7.