Health Cash Plans and Private Medical Insurance: What’s the Real Difference?
Health cash plans and private medical insurance (PMI) are two of the most common staff health benefits in the UK. Both can help with recruitment and retention, but they work in very different ways. Choosing between them isn’t just about price—it’s about what’s actually covered, how you claim, and what happens when things go wrong.
What Each Benefit Typically Covers
Feature | Health Cash Plan | Private Medical Insurance (PMI) |
|---|---|---|
Routine Costs | Dental check-ups, hygienist, fillings, eye tests, glasses, physiotherapy, some specialist consultations | Not usually covered (some policies offer limited extras) |
Major Treatment | Not covered | Surgery, cancer care, inpatient/outpatient treatment, rapid diagnostics |
Chronic Conditions | Not covered | Generally excluded (unless acute flare-up) |
Claims Process | Pay upfront, submit receipts for reimbursement (within annual limits) | Pre-authorisation required; insurer pays provider directly where possible |
Exclusions | Cosmetic, elective, over annual limits | Pre-existing and chronic conditions, some diagnostics, experimental treatments |
A Messy, Realistic Example
Imagine Sarah, who has a company health cash plan. She pays for a dental crown (£450) and submits the receipt. Her plan only reimburses up to £200 per year for dental treatment, so she gets £200 back and covers the rest herself. Six months later, Sarah develops severe knee pain. She tries to claim for a private MRI scan, but the cash plan won’t cover it—it’s classed as a diagnostic test, not a routine benefit. If Sarah had PMI, she could have asked her GP for a referral, got pre-authorisation from her insurer, and (if the policy allowed) had the MRI and follow-up treatment covered privately. However, if her knee pain was due to a long-standing condition, the PMI might exclude it as ‘chronic’ or ‘pre-existing’—and she’d need to check her policy’s wording closely.
Key Questions to Ask Before You Claim
What exactly does my policy cover? Check the schedule of benefits and exclusions.
Are there annual limits for each type of claim? Cash plans usually cap payouts per benefit per year.
Does my PMI use moratorium or full medical underwriting? Moratorium means pre-existing conditions are excluded for a period (often two years) unless you’ve been symptom-free. Full medical underwriting means all medical history is declared upfront and exclusions are listed.
Do I need pre-authorisation? PMI almost always requires this before treatment. Cash plans usually don’t, but you must keep receipts.
What evidence do I need? Keep all receipts, referral letters, emails, and policy documents. If a claim is denied, ask for a written explanation referencing the policy wording.
Common Disputes and How to Respond
Claim denied as ‘chronic’ or ‘pre-existing’: Request the exact policy definition and a written explanation. If you disagree, ask about the insurer’s complaints process.
Cash plan claim over the annual limit: Double-check your benefit schedule. If you think there’s an error, ask your provider for a breakdown of what’s been paid so far this year.
Benefit withdrawn or changed by your employer: Request written confirmation of the change, updated policy documents, and check your payslip for any changes in benefit-in-kind (BIK) deductions.
Tax, Payroll and Reporting: What’s Changing?
Employer-provided health cash plans and PMI are usually taxable benefits. This means you may pay tax and National Insurance on the premiums your employer pays, unless an exemption applies. Historically, employers reported these on P11D forms. HMRC has announced that mandatory payrolling of certain benefits in kind, including medical benefits, will be phased in from 6 April 2027. This means tax will be deducted monthly via PAYE, giving employees more transparency. Check the latest HMRC payrolling guidance for updates and timelines.
Ask your HR team how your benefit is reported and whether payrolling will affect your payslip.
Check your payslips for BIK deductions and query anything you don’t understand.
Keep all correspondence about changes to your benefits or tax treatment.
Practical Steps if You Have a Dispute
Request a written explanation from your insurer or employer, referencing the policy wording.
Gather all evidence: policy documents, emails, medical notes, bills, and any letters.
Use the insurer’s formal complaints process. The Financial Ombudsman can review PMI and dental insurance disputes, especially around pre-existing conditions and exclusions.
If you’re struggling to organise your documents or draft questions, Caira by Unwildered can help. You can upload policy documents, letters, screenshots, emails, medical notes and bills; Caira can compare wording, organise evidence, draft questions or emails, and help you understand next steps 24/7. No question is too basic—sometimes the small details make all the difference.
Keep a record of all correspondence and decisions in case you need to escalate.
Useful Starting Points
This article is general information, not legal, tax, insurance, financial or medical advice.
