Guide
PMI vs Self-Pay: The Right Mix for UK Private Clinics
For many established outpatient clinics, a PMI to Self Pay Mix of 30:70 is a reasonable starting range. But this is a rough guide, not a published UK benchmark. Therefore, it's important to delve into in greater depth, so you can make a decision specific to your clinic(s).
TLDR; What's a good mix?
There is no universal target. For many established outpatient clinics, 25–40% PMI and 60–75% self-pay by collected revenue is a sensible starting point. New clinics with spare capacity may benefit from more PMI work.
Calculate it over a rolling 12-month period using completed appointments, collected revenue and contribution after direct costs and administration. Revenue gives the clearest headline ratio, but contribution per clinical hour is usually more useful for decision-making.
No, as insurer fees tend to be lower than self pay with more admin. However, PMI provides more patients and helps fill unused appointments, and by using Effra to eliminate the admin burden you are significantly better off doing a mix of self pay with Effra-enabled PMI. Higher and more diversified revenues ✔
Increasing PMI work can make sense when clinicians have regular unused capacity, insured appointments still make a worthwhile contribution after administration, or self-pay acquisition costs are high.
PMI-to-self-pay mix is not a fixed national ratio; there’s no benchmark. It is the mix that keeps your particular clinic(s) profitable, makes sensible use of capacity and prevents any insurer from becoming commercially irreplaceable.
For many established outpatient clinics, 30-40% PMI and 60-70% self-pay by collected revenue is a reasonable starting range. But this is a rough guide, not a published UK benchmark. A new clinic with empty appointments may benefit from substantially more PMI work, while a busy specialist clinic may prefer very little.
What a good PMI to self pay mix means
A healthy funding mix should:
• Generate enough demand to keep clinicians productively occupied.
• Produce an acceptable contribution per clinical hour.
• Avoid excessive dependence on one insurer or referral source.
• Preserve enough pricing and clinical flexibility to develop the clinic.
In Q1 2026, 69% of UK private hospital and day-case admissions were insurance-funded and 31% were self-pay. However, PHIN's data excludes physiotherapy, mental health and outpatient diagnostics. A clinic should not adopt 69:31 simply because it is the national admissions split.
Why a mix is sensible for a UK health clinic
PMI can provide a reliable patient-acquisition channel. Insurer directories, employer schemes and managed referrals can help a clinic reach patients it might otherwise have to acquire through paid marketing. The Association of British Insurers reported that 6.5 million people had health insurance in 2024, including 4.8 million covered through workplace policies. Insurers processed £4bn in health claims that year.
Self-pay offers greater control. The clinic normally sets its own fees, collects payment before or at the appointment and has more freedom over appointment length, packages and treatment pathways. It is also less exposed to insurer fee schedules, authorisation limits and billing rules.
A mixed model can combine PMI patient flow with self-pay margin and flexibility. It can also make the clinic less vulnerable to a downturn in either market. However, a mixed model is not automatically diversified: a clinic receiving 40% of revenue from PMI may still be highly exposed if one insurer supplies almost all of that work.
PMI versus self pay volume margin and cash flow
The best available UK clinic-owner evidence comes from HMDG's 2026 Private Practice Barometer, based on 715 responses from predominantly MSK clinic owners.
Metric | Accepts PMI | No PMI |
|---|---|---|
Median annual revenue | £275,000 | £150,000 |
Median profit margin | 20% | 25% |
Median new patients per month | 40 | 35 |
Cash flow differs. Self-pay is normally collected promptly, although clinics incur card-processing and patient-acquisition costs. PMI can involve authorisation checks, invoice submission, remittance matching, excess collection and rejected claims. This however can be handled by Effra, which ensures authorisation codes are in the right format, automatically submits invoices to insurers from your PMS, processes remittances and collects excesses instantly via card on file.
The CSP and Physio First advise clinics to account for PMI payment delays in cash-flow forecasts.
How specialty capacity and clinic maturity change the answer
The HMDG data suggests that PMI affects different specialties differently:
• Physiotherapy clinics accepting PMI reported twice the median revenue of non-PMI clinics, with both groups reporting a 20% margin.
• Podiatry clinics reported a modest revenue advantage and almost no margin difference.
• Osteopathy clinics accepting PMI reported much higher revenue
• Chiropractic clinics reported only a modest revenue difference
Do note, capacity is equally important. If a PMI patient fills an appointment that would otherwise remain empty, a lower fee can still generate useful contribution to the clinic. If the diary is full, that appointment must be compared with the self-pay work it may displace.
Use the calculator below to delve deeper into this:
Example figures — replace them with your own.
Authorisation checks, data entry, claim submission, reading remittances, chasing rejections, collecting excesses.
If a clinician or the owner does the billing rather than admin staff, enter their salary instead. The cost of their time is what matters here.
£26,000.00 salary ≈ £17.09 per productive hour, including employer NI, pension and paid holiday.
These slots would otherwise be empty, so this is contribution you would not otherwise earn.
This work contributes after costs. It brings more revenue overall but less per appointment compared to self-pay, so it suits clinics with spare capacity that they want filling. Set a maximum share of revenue you are comfortable taking from any one insurer, and review it at least annually.
The hourly cost adds employer National Insurance, pension and paid holiday to the salary you entered, and assumes a self-pay appointment takes a quarter of the admin time an insured one does. This is a contribution sense-check, not a full profit calculation. It does not include rent, software, cancellations, reports, the cost of delayed payment or every exception your team may encounter.
PMI as a % of Total Revenue | Where it may fit |
|---|---|
0-25% | Busy specialist, premium or strongly differentiated clinic |
25-40% | Established clinic seeking a balance of demand and autonomy |
40-60% | New, underutilised or physiotherapy-led volume clinic |
Over 60% | Insurer-led model requiring strong systems and concentration controls (e.g. using Effra to automate processes) |
These bands are starting hypotheses. A clinic should move outside them when its figures justify doing so.
How to calculate your PMI to self pay mix
Use a rolling 12-month period to reduce seasonal distortion.
Appointment mix
PMI appointment share = Completed PMI appointments ÷ total completed PMI and self-pay appointments × 100
Revenue mix
PMI revenue share = Net PMI revenue collected ÷ total PMI and self-pay revenue collected × 100 (get these into images)
Use collected or reliably recognised revenue, not the original amount invoiced. For commercial analysis, patient excesses relating to insured treatment should normally remain within the PMI episode.
Contribution mix
Contribution = Net collected revenue − direct clinician costs − consumables − payment and claims costs − insurer-specific administration − expected bad debt
Revenue does not show what remains after serving each payer. A clinic could be 40% PMI by appointments but only 33% PMI by contribution. That gap may reveal lower fees, greater administration or collection leakage. Effra can reduce that admin burden and reduce leakages in collection.
Contribution per clinical hour
Contribution per clinical hour = contribution / appointment, documentation and reporting time
Where capacity is limited, this is usually the most useful comparison. Calculate contribution per occupied room-hour as well if rooms, rather than clinicians, are the main constraint.
How much dependence on one insurer is too much
Total PMI share is only one risk measure. Managers should also monitor:
• Revenue and contribution from each insurer.
• Revenue from intermediaries, corporate schemes and the largest referrers.
• Aged debt and payment performance by funding source (i.e. self pay, insurer)
• Rejection, resubmission and patient-excess collection rates.
• Administrative minutes and authorised versus delivered sessions.
Stress test: If referrals from your largest insurer fell by 30%, or its fees remained unchanged for two years, could the clinic still cover fixed costs without emergency restructuring? If not, the clinic is dependent on that insurer even if its overall PMI percentage appears reasonable.
Insurer terms also differ. Bupa's fee-assured arrangements generally prevent additional bills for covered treatment, while WPA publishes maximum benefits and may allow an agreed patient shortfall. Review the actual recognition agreement rather than applying assumptions from one insurer to another.
When a clinic should increase its PMI work
Increasing PMI may make sense when:
• Clinicians have recurring unused capacity.
• PMI appointments make a positive contribution after administration.
• Self-pay acquisition costs are high (investment in SEO takes time, paid media costs can rise).
• The local patient or employer population has strong insured demand.
• Recognition would diversify an existing referral base.
• The clinic has reliable authorisation, invoicing and reconciliation processes (e.g. because they’re using Effra).
Do not expand PMI simply because the insurer fee exceeds the direct treatment cost. Include billing time, rejected claims, reporting, delayed payment and uncollected patient liabilities.
For the operational steps involved in choosing insurers, obtaining recognition and preparing the clinic to bill, use Effra's Insurer Growth Playbook for UK Clinic Owners.
How to rebalance without creating empty diaries
Reducing PMI dependence should be gradual. Rank insurers and contracts by contribution per hour, administrative burden and payment performance. Restrict or leave the weakest relationship first rather than treating all PMI as one category.
At the same time, strengthen self-pay demand through:
• Clear positioning around particular conditions or patient groups.
• Published fees and straightforward online booking.
• Consultant, GP and patient-referral relationships.
• Better follow-up of enquiries.
• Services or packages that are difficult to deliver within insurer rules.
• Reviews and evidence of patient outcomes.
Monitor utilisation throughout the transition. Replacing 30 insured appointments with 15 self-pay appointments at a higher fee is not necessarily an improvement once contribution, fixed costs and unused capacity are considered. Communicate changes clearly to existing patients. Some may continue as self-pay, but that should be their informed choice rather than an assumption built into the forecast.
Common mistakes when balancing PMI and self-pay
• Measuring invoiced revenue instead of collected revenue.
• Comparing insurer fees with self-pay prices before accounting for marketing and payment costs.
• Ignoring billing, reporting and claim-correction time.
• Grouping every insurer and intermediary together.
• Using appointment share as the only measure.
• Keeping loss-making PMI work because it produces volume.
• Dropping PMI before building self-pay demand.
• Assuming insured patients are less engaged without measuring retention and outcomes.
• Allowing one insurer to become commercially indispensable i.e. over-dependence.
The practical answer
For many established UK clinics, a self-pay majority with approximately 25-40% of collected revenue coming from PMI is a sensible place to begin. New or underutilised clinics may rationally accept more PMI, while full or highly specialised clinics may choose less.
The percentage is not the final test. A good mix is one in which every retained funding source makes an appropriate contribution, spare capacity is used deliberately, cash is collected reliably and the clinic could withstand the loss of its largest insurer.