Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Monthly break-even revenue
$75,610
Margin of safety at current revenue
17.8%
Daily break-even (≈21.7 working days/mo)
$3,484
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How to use this
- 1Enter total monthly fixed costs ($).
- 2Enter variable costs as % of production (lab, supplies, commission) (%).
- 3Enter current monthly production/revenue ($).
- 4Read your monthly break-even revenue on the right — it updates as you type.
- 5Hit Share to keep the scenario or send it to someone.
About this calculator
Break-even analysis answers the single most important cash-flow question a practice owner has: how much do we need to produce this month just to cover the bills before anyone, including the owner, takes home profit. This calculator takes total fixed monthly costs (rent, base staff wages, insurance, loan payments) and your average variable cost rate as a percentage of production (lab fees, supplies, commission-based pay) to compute the break-even revenue point and the margin of safety at your current production level.
Worked example
Using the values the calculator loads with:
Inputs
- Total monthly fixed costs: 62000 $
- Variable costs as % of production (lab, supplies, commission): 18 %
- Current monthly production/revenue: 92000 $
Results
- Monthly break-even revenue: $75,610
- Margin of safety at current revenue: 17.8%
- Daily break-even (≈21.7 working days/mo): $3,484
What each field means
Inputs
- Total monthly fixed costs ($)
- The total monthly fixed costs used in the calculation, measured in $. Starts at 62000 $ so you have a working example on load.
- Variable costs as % of production (lab, supplies, commission) (%)
- The variable costs as % of production (lab, supplies, commission) used in the calculation, measured in %. Starts at 18 % so you have a working example on load. Accepted range: 0–80 %.
- Current monthly production/revenue ($)
- The current monthly production/revenue used in the calculation, measured in $. Starts at 92000 $ so you have a working example on load.
Results
- Monthly break-even revenue
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Margin of safety at current revenue
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Daily break-even (≈21.7 working days/mo)
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
What counts as a fixed cost versus a variable cost here?
Fixed costs don't change with production volume in the short term: rent, loan payments, base staff wages, insurance premiums, and software subscriptions. Variable costs scale with production: lab fees, dental/medical supplies used per procedure, and any commission-based portion of doctor or hygienist pay.
What margin of safety should a practice aim for?
20-30% margin of safety is a comfortable cushion, meaning revenue could drop 20-30% before the practice stops covering its costs. Under 10% margin of safety means a slow month, an unexpected repair, or a doctor's medical leave could put the practice into a cash crunch quickly.
How does owner compensation fit into break-even?
If the owner takes a market-rate salary as compensation for clinical or management work, include it in fixed costs like any other salary. If instead the owner takes profit distributions after break-even, leave it out of fixed costs and treat it as what's left over — just be consistent about which model you're using.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
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Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Dental/Vet Office Break-Even Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/dental-office-break-even
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/dental-office-break-even" target="_blank" rel="noopener">Dental/Vet Office Break-Even Calculator — RevenueLab</a> (2026).</p>
Source: [Dental/Vet Office Break-Even Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/dental-office-break-even) (2026).