Practice Break-even & Capacity Calculator
How many patients you need to see before the practice makes money — and whether your rooms can hold them.
Your practice
Monthly figures. Estimates are fine — the direction matters more than the decimals.
Fixed costs (monthly)
Per patient
Capacity
Current position
Break-even
How many patients do you need to see before the practice makes money — and can your rooms actually fit them? The second question is the one that gets skipped, and it is the one that decides whether the plan is real.
Contribution margin, not revenue
The number that matters is not what a consultation earns. It is what it earns after the costs that only arise because the patient walked in — consumables, payment processing, pathology, and anything else that scales with volume.
That figure is the contribution margin, and it is what pays off your fixed costs. Rent, salaries, software, insurance and utilities have to be covered before the practice earns anything at all.
A practice with high revenue per patient and heavy consumable costs can be less profitable than one billing less per patient with lean variable costs. The margin is the truth; the fee is not.
Capacity is the part everyone forgets
A break-even volume you cannot physically deliver is not a break-even point. It is a staffing or premises problem wearing a finance costume.
The calculator compares what you need against what your rooms, your days and your appointment length can actually produce. If break-even sits above 85% of capacity, you have almost no room for cancellations, holidays or a slow month — and a practice running at 100% of theoretical capacity is not running at 100%.
Margin of safety
The margin of safety is how far patient numbers can fall before you hit break-even. A thin margin means a single competitor opening nearby, or one practitioner leaving, moves you from profit to loss.
As a rough guide, a margin of safety under 10% is fragile, and one above 25% gives you room to absorb a bad quarter without touching the structure of the practice.
When there is no break-even point
If each patient costs more than they generate, no volume fixes it. The calculator will say so rather than producing a number, because in that situation more patients make the loss larger, not smaller.
That is a pricing or cost problem, and it has to be solved before anything else.
What this calculator does not do
It treats revenue per patient as an average. Real practices have a mix of item numbers, bulk billing and private fees, and the mix matters more than the average.
It also assumes fixed costs really are fixed. Salaries step up when you add a practitioner, and that changes the picture materially.
Use it for direction and for testing whether a change is worth making. For decisions involving premises or staff, model it with your accountant using your actual item-number mix.
Frequently asked questions
What is contribution margin, and why does it matter more than revenue?
Contribution margin is what each patient contributes after the costs that scale with them — consumables, payment fees, pathology. It is the figure that pays off fixed costs; a higher average fee with heavy variable costs can be less profitable than a lower fee with lean costs.
Why does the calculator compare break-even to capacity?
A break-even volume you cannot physically deliver is not a break-even point — it is a staffing or premises problem. If break-even sits above 85% of your capacity, you have almost no room for cancellations or a slow month.
What does the margin of safety tell me?
It is how far patient numbers can fall before you hit break-even. A margin under 10% is fragile — one competitor opening nearby can move you from profit to loss; above 25% gives you room to absorb a bad quarter.
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This calculator provides general information only and is not tax advice. It does not account for your individual circumstances. Confirm figures against the relevant legislation or with a registered tax agent before relying on them for a lodgement.
Reviewed by eHealth Systems Pty Ltd