Private Medical Insurance: High Excess vs. No Excess in the UK

Key Takeaway: A voluntary excess on private medical insurance (PMI) reduces your monthly premium but means you pay more upfront when you claim. No excess policies cost more each month but remove out-of-pocket costs at the point of treatment. Your choice depends on how often you expect to claim, your budget, and your risk tolerance.

When choosing private medical insurance in the UK, one of the most significant decisions affecting your premium is whether to accept a voluntary excess, and if so, how much. This choice directly impacts both what you pay monthly and what you pay when you actually need treatment.

What is a Voluntary Excess?

A voluntary excess (sometimes called a deductible in other markets) is an amount you agree to pay towards each claim before your insurer covers the rest. UK private medical insurers typically offer voluntary excess options ranging from £0 (no excess) to £500, £1,000, £2,500, or even higher.

This sits alongside any compulsory excess your insurer may require. The voluntary portion is entirely optional, and accepting a higher voluntary excess reduces your premium. According to guidance from the Association of British Insurers, understanding excess structures is essential when comparing policies (ABI, 2024).

High Excess PMI: Pros and Cons

Advantages:

Lower monthly premiums make high excess policies attractive if you are generally healthy and rarely claim. For example, choosing a £1,000 voluntary excess instead of no excess might reduce your annual premium by 20 to 30 per cent, depending on your insurer, age, and cover level.

You retain cover for serious, expensive treatment (major surgery, cancer care, long hospital stays) where the excess becomes a small fraction of the total claim cost. The real value of PMI is protection against large bills, not routine consultations.

High excess policies suit those building an emergency fund who can afford the upfront cost if treatment is needed but want to keep ongoing insurance costs low.

Disadvantages:

Every time you claim, you pay the excess. If you need multiple episodes of care in a year (separate conditions, follow-up treatments counted as new claims), you may pay the excess each time, depending on your policy terms. Always check whether the excess applies per claim, per year, or per condition.

The upfront cost can deter you from claiming for smaller but still valuable treatments, undermining the point of having cover. If a diagnostic scan costs £800 and your excess is £1,000, you effectively pay the full cost yourself.

Cash flow matters. Even if the treatment costs £10,000, finding £1,000 upfront when you are unwell and possibly unable to work can be difficult.

No Excess PMI: Pros and Cons

Advantages:

You face no out-of-pocket cost when you claim (beyond any compulsory excess, which is usually small or zero on most UK PMI policies). This removes a financial barrier to getting treatment promptly.

Budgeting is simpler. Your insurance cost is entirely predictable: the monthly premium, with no surprise bills when you need care.

If you claim frequently (chronic conditions requiring regular treatment, a history of needing private consultations or scans), a no excess policy often works out cheaper overall than paying a high excess multiple times.

Disadvantages:

Higher monthly premiums. You pay more every month whether you claim or not. Over years without claims, this adds up.

You are effectively pre-paying for access. As foundational texts such as Principles of Finance explain, insurance involves transferring risk, and the price of that transfer reflects both the probability of a claim and the insurer’s administrative costs. A no excess policy shifts more risk to the insurer, so the premium rises accordingly.

Comparison Summary

Feature	High Excess (e.g. £1,000)	No Excess
Monthly premium	Lower (20-30% less)	Higher
Cost per claim	£1,000 upfront	£0 (or minimal compulsory excess)
Best for	Healthy individuals, rare claimers, those with emergency savings	Frequent claimers, those who want cost certainty, lower cash reserves
Cash flow risk	High upfront cost when unwell	None
Long-term cost if no claims	Lower overall spend	Higher overall spend
Long-term cost if frequent claims	Can exceed no excess option	Usually cheaper overall

Who Should Choose Which?

Choose a high voluntary excess if you are young and healthy with no ongoing conditions, rarely use private healthcare, have an emergency fund covering at least six months’ expenses, and want to minimise your monthly outgoings while retaining catastrophic cover.

Choose no excess if you have a chronic condition requiring regular private treatment, claim once or more per year on average, prefer budget certainty and no surprise bills, or lack the savings to cover a four-figure excess comfortably.

Consider your claims history. If you claimed twice in the past three years, calculate whether two £1,000 excess payments plus the lower premium would have cost more or less than the no excess premium over the same period. Many insurers and comparison sites provide tools to model this.

Conclusion

The choice between high excess and no excess private medical insurance in the UK is not one-size-fits-all. It hinges on your health, your finances, and your risk tolerance. Higher excess policies reward healthy years with lower premiums but require financial resilience when you claim. No excess policies offer peace of mind and cost certainty at a higher monthly price. Review your claims history, assess your emergency savings, and compare the total cost under both scenarios before deciding. MoneyHelper recommends checking the specific terms of how and when the excess applies, as policies vary (MoneyHelper, 2024).

Always read the policy wording and key facts document carefully. Cover, exclusions, and excess structures vary by insurer and by policy. For advice tailored to your personal health and financial situation, consider speaking to an FCA-authorised insurance adviser or specialist health insurance broker. Verify current terms and premiums with insurers or brokers before making your final decision.

Financial Disclaimer: This article provides general information only and does not constitute regulated financial advice. UmbrellaOwl is not authorised by the Financial Conduct Authority. Private medical insurance is a significant financial commitment; your personal circumstances, health history, and budget will determine the most suitable option. For advice specific to your situation, consult an FCA-authorised insurance adviser or broker. Policy terms, excess options, and premiums vary by insurer and change over time. Always verify current details directly with the insurer or an authorised intermediary before purchasing or renewing cover.