An on-site optometry business needs about $727K in monthly revenue to break even under the first-year assumptions Here’s the quick math: fixed monthly overhead is about $589K, and contribution margin, meaning revenue left after variable and product costs, is 81% At the planned $1070K monthly revenue level, operating profit is about $278K before taxes, debt service, and owner distributions The model reaches break-even in Month 2, but the actual point moves with pricing, eyewear mix, route use, and appointment volume
Fixed costs$58.9K
Monthly overhead
Contribution margin81%
After variable spend
Break-even revenue$72.7K
Revenue needed
Break-even timingMonth 2
Model break-even
Break-even calculator
See how monthly revenue, variable expenses, and fixed costs shape the break-even point for an on-site optometry model.
Money available to cover fixed costs$113,400
$140,000 revenue - $26,600 variable expenses
Margin ratio
81%
Covers fixed costs
Yes
Break-even chart Revenue Total costs
Which expenses are fixed, variable, or step up as mobile eye care sales grow?
Cost classification
Break-even is only useful if monthly overhead stays separate from revenue-driven spend. Here’s the quick math: fixed payroll and facilities set the hurdle, while lenses, eyewear, vehicle use, and commissions move with sales.
Expense
Cost
Break-Even Treatment
Common Mistake
Salaried clinical and operating staff
Fixed
Include optometrists, opticians, vision technicians, administrative coordinators, mobile drivers, operations manager, and marketing manager in monthly overhead; first-year payroll is about $49.2k/month.
Treating salaried provider pay like a per-exam expense.
Vehicle fleet insurance
Fixed
Use $2,500/month as overhead from Month 1 through Month 60.
Spreading fleet insurance across each route or visit.
Professional liability insurance
Fixed
Use $1,200/month as recurring overhead in break-even.
Linking malpractice coverage to exam volume.
Administrative office rent and practice software
Fixed
Use $4,000/month combined: $2,500 rent plus $1,500 electronic health record and practice management software.
Leaving software out of overhead because it feels operational.
Wholesale eyewear, lenses, and contact lenses
Variable
Apply 14.0% of revenue in the first year: 10.0% for eyewear and lenses plus 4.0% for contact lenses.
Using the product margin for exams that don’t include eyewear sales.
Vehicle operating costs and sales commissions
Variable
Apply 5.0% of revenue in the first year: 3.0% vehicle operations plus 2.0% commissions.
Calling all vehicle spend fixed and missing route-driven usage.
Equipment service plans and added route coverage
Semi-fixed
Add as capacity steps when new equipment coverage or route support is needed, not as a smooth percent of revenue.
Putting the full $760k startup spend into monthly break-even.
How does break-even shift from a lean route to a base plan and a full-scale mobile optometry build?
Scenario table
Break-even moves fast because fixed overhead stays sticky, but revenue can scale faster as route density, employer visits, and eyewear conversion improve. Lean is close to the line, base adds a usable cushion, and full scale has the widest margin.
Planning assumptions only; actual break-even will move with route density, staffing mix, and eyewear conversion.
Scenario
Monthly Revenue
Variable Costs
Fixed Costs
CM Ratio
Operating Profit
Break-Even Signal
Lean route case
$803K
$153K
$589K
81.0%
$61K
Cushion is thin, so small misses can hurt.
Base route case
$1,070K
$203K
$589K
81.0%
$278K
This is the clean break-even zone with room to absorb slippage.
Expanded route case
$3,940K
$704K
$1,242K
82.1%
$1,994K
Scale gives a wide cushion if volume and conversion hold.
What breaks the break-even plan for on-site optometry?
Stress test
The base plan clears break-even by about $343K, so there is a real cushion. The main pressure points are a 20% revenue drop, variable expense rising from 19% to 24%, and a $100K overhead increase.
Stress Case
Changed Assumption
Break-Even Revenue
Revenue Gap
Risk Signal
Current plan
No change.
$727K
$343K cushion
Optician sales add $252K, so eyewear mix matters.
Revenue shortfall
Revenue falls 20% to $856K.
$727K
$129K cushion
A 20% drop still clears break-even, but the cushion shrinks fast.
Fixed-cost pressure
Fixed overhead rises by $100K.
$850K
$220K cushion
Another $100K of overhead cuts the cushion to $220K.
Margin pressure
Variable expense rises from 19% to 24%.
$774K
$296K cushion
A 5-point margin hit raises break-even by $47K.
Combined pressure
Revenue falls 20%, variable expense rises to 24%, and overhead rises by $100K.
$894K
$38K gap
The plan slips about $38K below break-even.
What should you verify before you commit to on-site optometry?
Founder checklist
Yes—don't scale the fleet until booked demand can clear at least $727K a month and the base plan can hit about $1.07M a month at 65% optometrist capacity and 60% optician capacity. If those numbers miss, the break-even date slips fast.
1Booking demand$1.07M/mo
Verify booked visits and eyewear sales can support the model before you add more vehicles or staff.
2Fixed load$58.9K/mo
Check that payroll plus overhead can carry the monthly floor, or the break-even date will move out.
3Product margin14% COGS
Lock supplier terms so eyewear, lenses, and contacts stay near the target cost base that protects contribution.
4Year 1 crew2-1-1-1-1
Confirm you can staff 2 optometrists, 1 optician, 1 vision tech, 1 admin coordinator, and 1 mobile driver from launch.
5Cash reserve$295K min
Keep enough cash through Month 5, when the model hits its low point, so the rollout does not stall.
6Launch gate$760K build
Get insurance, professional liability, licensing, and practice software ready before launch, and delay full spend until route density and eyewear conversion are proven.