A private clinic can have a busy diary and still produce disappointing income. The explanation is often that consultation fees have been mistaken for profit, or that the time and costs required to deliver the service have not been counted consistently.
The useful question is not how many patients a doctor should see in general. It is how many appropriate completed appointments a particular service needs to cover its costs and provide an acceptable return within safe capacity.
The calculations below are illustrative business-planning examples, not market prices, demand forecasts or personalised tax advice. They should never be used to justify unnecessary follow-up, investigation or treatment.
Start with contribution per completed appointment
Contribution is the amount remaining from an appointment after the costs that arise because that appointment is delivered. It is available to cover fixed overheads and, eventually, remuneration or profit.
Use contribution = receipt per appointment - variable cost per appointment.
Suppose a hypothetical practice receives GBP220 per completed consultation and incurs GBP70 of variable costs. Contribution is GBP150. The variable figure might include relevant room charges, administrative work or transaction costs, depending on how the actual service is contracted.
Do not include the same expense twice. Room hire paid per appointment belongs in variable costs; a fixed monthly room contract belongs elsewhere. Some arrangements mix the two and need to be modelled accordingly.
Identify the fixed costs of keeping the service open
Fixed costs may include software, regular administration, facilities, professional cover and other commitments that do not disappear when one appointment is cancelled. Use the actual arrangement rather than a generic list of standard private-practice expenses.
Assume illustrative monthly fixed costs of GBP1,800. With GBP150 contribution per completed appointment, the operating break-even point is 12 appointments: 1,800 / 150 = 12.
At that point, the example covers its listed operating costs but provides nothing additional for the owner's work or tax. Calling it a profitable medical business would therefore overstate what the calculation establishes.
Add a remuneration objective separately
Suppose the owner wants a further GBP3,000 monthly amount available before its applicable tax and remuneration treatment. The simple target becomes (1,800 + 3,000) / 150 = 32 completed appointments.
At 32 appointments, receipts are GBP7,040, variable costs GBP2,240 and fixed costs GBP1,800, leaving GBP3,000 on this simplified basis. This is not a net salary forecast. How the amount is treated depends on the business structure and circumstances.
Do not add a remuneration target again if the same cost is already included in fixed overheads. Make the model's treatment of the clinician's work explicit so that the result can be compared with alternatives.
Translate attendance into booking capacity
A completed-appointment target is different from a booking target. At an illustrative 80% attendance rate, 32 expected completed appointments require 40 bookings in a simple planning model: 32 / 0.80 = 40.
This is an expected value, not a guarantee that exactly 32 people will attend. Small numbers can vary, cancellations may be refilled and the mix of appointment types may change.
If the clinic only has capacity for 40 bookings, the model has little spare capacity at that attendance assumption. The response should be to improve the service economics or reliability, not to overbook beyond a safe workload or pressure patients into unnecessary visits.
Test sensitivity before changing fees
Keeping the hypothetical variable cost at GBP70 and fixed costs at GBP1,800 produces the following operating break-even comparison. Fractional appointments are rounded up because the service cannot complete part of a consultation for this purpose.
| Receipt per completed appointment | Contribution | Completed appointments to cover fixed costs |
|---|---|---|
| GBP200 | GBP130 | 14 |
| GBP220 | GBP150 | 12 |
| GBP240 | GBP170 | 11 |
This table does not prove that raising a fee will increase profit. Demand, affordability, contractual restrictions and the service offered may change. It shows the arithmetic while holding other assumptions constant, not the real-world response of patients.
Make marketing earn its place in the model
An additional hypothetical GBP450 monthly marketing subscription raises fixed costs from GBP1,800 to GBP2,250. At GBP150 contribution, operating break-even rises from 12 to 15 completed appointments.
The subscription therefore needs at least three genuinely additional completed appointments to cover itself on that limited measure. Bookings that would otherwise have arrived through the hospital or the practice website should not all be counted as incremental.
Doctify and Top Doctors can be assessed against that framework, but their actual quotes and functions differ. Top Doctors' advance-payment terms, for example, describe a particular transaction-related charge rather than the whole cost of every commercial package.
Do not confuse time saved with money received
A practice-management product may release administrative capacity without creating immediate cash savings. If an existing staff member spends fewer hours on a task but remains employed on the same terms, the practice has gained time to use differently.
Systems such as Semble, Pabau and Carebit should therefore be assessed against specific workflows. Identify whether the benefit is reduced expenditure, fewer omitted invoices, improved capacity or a less burdensome working day.
Do not multiply every minute saved by the clinician's consultation fee and call the result additional revenue. That assumes the time can be converted into appropriately filled clinical activity without further costs or constraints.
Model cash collection as a separate problem
A profitable-looking month may still create a cash shortage when receipts arrive later than expenses. Distinguish booked activity, completed work, invoices, accepted claims and payments received.
Healthcode's billing and practice infrastructure can be relevant to the administrative process, but the practice still needs to reconcile outstanding items and understand the reasons for delay.
Maintain a cash forecast covering startup commitments, recurring expenses and realistic collection dates. Do not assume that an unpaid invoice can fund next week's room hire simply because the underlying consultation produced a positive contribution.
Include costs that change in steps
Some overheads remain fixed only within a limited range. Adding another clinic may require another room session, more administrative cover or an upgraded software arrangement. The next patient can therefore trigger more cost than the first model suggests.
Recalculate when capacity changes. A service that works at one clinic a week may not scale proportionately if the second clinic requires a different staffing or facilities arrangement.
Also verify the treatment of services and expenses with an adviser. HMRC's healthcare VAT guidance makes the nature and purpose of the supply relevant; neither exemption nor recovery of input VAT should be assumed simply because the business is medical.
Keep the business target subordinate to clinical need
The purpose of the model is to choose a sustainable service, not to produce a revenue requirement that dictates care. Where appropriate demand cannot support the cost base, reconsider scope, facilities, pricing or the business itself.
Account for the doctor's total time, including letters, results, preparation and governance. A service can meet its monthly cash target while providing a poor return for the hours committed.
iatroX CPD can support maintaining the learning component of practice, but neither a financial model nor a software toolkit replaces professional judgement. A viable clinic is one whose economics support appropriate care rather than depend on doing more than patients need.
Related reading: planning the first 20 private patients and billing delays and lost revenue.
FAQs
How many patients does a private doctor need to break even?
There is no universal number. Divide the relevant fixed costs by contribution per completed appointment and round up. Then assess owner remuneration, tax, capacity and cash timing separately.
Is a consultation fee the same as profit?
No. Deduct variable delivery costs, then cover fixed overheads and account for the clinician's work and applicable tax treatment. The patient's total bill may also include amounts belonging to other providers.
Should I increase follow-up appointments to meet the financial target?
Only clinically appropriate care should be provided. If the service is not viable at appropriate activity levels, change the business assumptions rather than create unnecessary consultations.
Keep professional learning within a sustainable practice through iatroX CPD.