Private Health Insurance Excess Explained | UK Guide

Choosing a private health insurance excess can feel like a small detail when you are comparing policies. In practice, it can make a noticeable difference to both your monthly premium and the amount you must find when you need treatment.

A higher excess will usually reduce the price of your cover, but it also means accepting more of the financial risk yourself. A lower excess costs more in premiums, yet may make it easier to use your insurance without worrying about a substantial bill.

The right choice is not simply the highest excess you can select or the lowest one you can afford. It depends on how the insurer applies it, your savings, the likelihood of claiming and whether you would genuinely be comfortable paying it at short notice.

This guide provides general information about UK private medical insurance. Policy terms vary considerably, so always read the insurer’s current documents before buying or renewing cover.

What is a private health insurance excess?

A private health insurance excess is the amount you agree to contribute towards eligible treatment before your insurer pays some or all of the remaining covered costs.

For example, suppose you have a £250 excess and make an eligible claim for treatment costing £1,200. Depending on the policy terms, you may pay the first £250 and the insurer may pay the remaining £950. This assumes that the treatment is covered, has been authorised and is not affected by another limit or contribution.

An excess does not make an excluded treatment eligible. If your policy does not cover a particular condition, provider or procedure, offering to pay the excess will not change that decision. It is therefore important to consider the excess alongside the wider benefits and exclusions described in our guide to what private health insurance actually covers.

MoneyHelper describes an insurance excess as the part of a claim that you agree to pay yourself, with the insurer covering the remainder subject to the policy limits. Its general explanation of how insurance excesses work is useful, although private medical policies have their own rules about when and how an excess is charged.

How does a health insurance excess work in practice?

The exact payment process depends on the insurer and healthcare provider. In some cases, you pay the hospital, consultant or clinic directly. In others, the insurer settles the eligible invoice and then asks you to repay your contribution.

Imagine that you see a private consultant, have diagnostic imaging and later receive treatment. The insurer might treat these services as parts of one claim, but that does not necessarily mean you will receive one combined invoice. The consultant, hospital and imaging provider may bill separately.

If your annual excess is £500, the insurer might record each eligible bill against that amount. You could therefore pay £220 for an initial consultation and tests, followed by another £280 when further eligible treatment is provided. Once the full £500 has been reached, the insurer would generally begin paying the covered costs according to the remaining policy terms.

This arrangement can be confusing because treatment may be medically covered while the insurer pays nothing towards the first few invoices. The costs are still being counted towards your excess; they simply have not yet exceeded it.

Do not arrange private treatment on the assumption that it will automatically be paid. Many policies require you to contact the insurer before a consultation, test or procedure. Our guide to making a health insurance claim in the UK explains the usual authorisation process in more detail.

Is the excess charged per claim or per policy year?

This is one of the most important questions to ask before choosing a policy. An excess may apply once in each policy year, to each separate claim, to each person covered, or according to another definition set out by the insurer.

With an annual excess, your eligible contributions normally accumulate during the policy year. Once you have paid the full amount, you will not usually pay it again until the excess resets. However, a policy year is not necessarily the same as a calendar year. If your cover renews in October, for example, the excess may reset in October rather than January.

A per-claim excess can work differently. If the insurer treats two medical problems as separate claims, you may need to contribute an excess towards both. A recurring condition, a new set of symptoms or treatment continuing after renewal can also raise questions about whether the insurer considers it an existing claim or a new one.

Family policies require particular care. An excess described as “£250 per person per policy year” could expose a family of four to considerably more out-of-pocket spending than a single £250 family-wide excess.

The Association of British Insurers recommends asking whether an excess applies per claim or per policy year when comparing private medical insurance. Its consumer guide to buying private medical insurance also highlights the need to compare cancer cover, treatment limits and the effect of claims on future premiums.

How much excess can you choose?

Available excess levels differ between insurers and products. You may be offered no excess or a relatively modest contribution, such as £100 or £250. Some policies allow substantially higher amounts, potentially reaching £500, £1,000 or more.

The choices offered through workplace cover may be more limited than those available on an individual policy. An employer might select the main excess for everyone, while employees are given the option to upgrade certain benefits. Family members added to a company scheme may also be subject to different arrangements.

Do not assume that two policies displaying a £500 excess create the same liability. One may charge it once per person each year, while another could apply it to each claim. One might count eligible outpatient appointments towards it, while another could have separate outpatient limits or co-payments.

There is also a difference between an excess and a co-payment. An excess is usually a defined amount you pay before or alongside the insurer’s contribution. A co-payment requires you to pay a proportion or additional part of the cost. Some policies combine the two, so check for phrases such as “shared responsibility”, “treatment contribution” or “outpatient contribution”.

Does choosing a higher excess make insurance cheaper?

A higher excess will commonly reduce the premium because you are agreeing to fund a larger portion of any claim. However, the saving is not always large enough to justify the additional risk.

Suppose one policy costs £80 per month with a £100 excess and £72 per month with a £500 excess. The higher excess saves £96 over a full year but leaves you potentially paying an additional £400 if you claim. If you make no claim, the cheaper premium works in your favour. If you need treatment, it may take several claim-free years to recover the extra amount you paid.

The calculation should therefore compare the annual premium saving with the increase in excess:

Annual saving = monthly premium difference × 12

Then consider how many claim-free years would be needed for those savings to equal the additional excess. This is sometimes called the break-even period.

Using the example above, the extra excess is £400 and the annual saving is £96. It would take a little over four claim-free years for the premium savings to equal that difference. This does not predict whether you will claim, but it makes the trade-off easier to see.

Premiums can change at renewal, so this is not a guaranteed long-term calculation. Age, medical inflation, postcode, cover choices and claims history may all influence future pricing. See our wider guide to private health insurance costs in the UK for the other factors that can affect premiums.

What is the best excess for private health insurance?

There is no single excess that suits everyone. A sensible starting point is the largest amount you could pay comfortably from accessible savings without borrowing, delaying treatment or disrupting essential household spending.

For someone with limited savings, a lower excess may be worth the higher premium. Insurance is less useful if the excess itself becomes a barrier to claiming. A person with a healthy emergency fund may prefer a higher excess, particularly if the premium reduction is meaningful and the excess applies only once per policy year.

Your reason for buying insurance matters as well. If you mainly want protection against major operations and expensive hospital treatment, you may be comfortable self-funding a larger initial amount. If you expect to use outpatient consultations, scans, physiotherapy or mental health services, a high excess may absorb much of the value of smaller claims.

However, anticipated treatment is not automatically covered. Symptoms, investigations or conditions that began before the policy started may be treated as pre-existing, depending on the underwriting method and policy wording. Read our guide to pre-existing conditions and health insurance before relying on a new policy for an existing concern.

When might a low excess be the better choice?

A low excess may suit you if an unexpected bill of several hundred pounds would be difficult to manage. Paying more each month can make costs more predictable and reduce hesitation about starting an eligible claim.

It can also be appealing for a family policy. Even an apparently manageable excess can become expensive if it applies separately to each insured person. Parents may prefer a lower contribution when several family members could need treatment during the same year.

People who value frequent access to eligible outpatient services may also find a lower excess more practical. Private consultations and diagnostic tests can quickly produce several invoices, but a single modest appointment may remain entirely below a high excess.

Nevertheless, a low excess does not guarantee that every small healthcare expense will be reimbursed. Some policies place a separate annual limit on outpatient care, restrict access to certain provider networks or exclude routine and preventative treatment. Check whether GP appointments, physiotherapy, talking therapies and diagnostic tests are included rather than assuming they fall under general cover.

When could a high excess make sense?

A higher excess may be reasonable when you have enough savings to meet it immediately and receive a worthwhile premium reduction in return. It may appeal to people who want cover primarily for less frequent but potentially expensive acute treatment.

It may also work well when the excess is charged only once per person per policy year. Once it has been met, subsequent eligible claims during that same year may be covered without another excess, although other limits can still apply.

Some people combine a high-excess policy with a dedicated healthcare savings pot. The lower premium helps reduce ongoing expenditure, while the savings are kept ready if a claim is necessary. This can be more disciplined than simply choosing the cheapest premium and hoping the excess will never be needed.

A high excess is less convincing when the premium saving is very small, when it applies to every new claim, or when you would need to use credit to pay it. It can also provide limited value if the treatments you are most likely to use cost less than the excess.

Costs that can still apply after you pay the excess

Paying the excess does not necessarily mean that the insurer will meet every remaining bill in full. Private medical insurance policies contain limits, exclusions and provider rules that operate separately from the excess.

For example, a policy might restrict outpatient cover to a fixed annual amount. If the insurer has already paid up to that limit, further outpatient costs may become your responsibility even though you have paid your excess. Therapies such as physiotherapy may have their own session limit, while mental health treatment may require a recognised provider or separate authorisation.

You may also face a shortfall if you choose a consultant or hospital outside the insurer’s approved network, or if a provider charges more than the insurer’s recognised fee. Always ask whether the specialist and facility are fully covered before booking.

Other common restrictions may include:

• pre-existing condition exclusions;
• limits on outpatient tests, therapies or consultations;
• restrictions on experimental or unproven treatment;
• specified hospital and consultant networks;
• time or monetary limits for certain treatments;
• co-payments or contributions in addition to the excess.

If your main concern is understanding the broader difference between paying privately and using NHS services, our guide to NHS versus private healthcare explains what private care can—and cannot—offer.

Questions to ask before selecting an excess

The headline figure tells you very little without the rules surrounding it. Before buying or renewing a policy, ask the insurer or broker for clear answers in writing.

Find out whether the excess applies per claim, per condition, per person or per policy year. Ask when the policy year begins and what happens to an ongoing course of treatment after renewal. If a family is covered, establish the maximum total excess the household might have to pay during one year.

You should also ask how several related invoices are handled. A consultation, scan and operation may form one claim, but you should not assume that they do. Clarify whether eligible bills below the excess accumulate and whether the insurer must authorise them before they count.

Other useful questions include whether the excess applies to cancer treatment, mental healthcare and therapies; who collects the payment; and whether changing the excess at renewal affects an ongoing claim.

Keep the membership certificate, policy wording and any written explanation you receive. If a later decision does not match what you were told, these records can help the insurer investigate the issue.

How to compare excess options properly

Start by comparing like with like. Two quotations are only meaningfully comparable if the core cover, hospital network, outpatient benefits, underwriting and treatment limits are broadly equivalent.

For each excess option, note the full annual premium rather than concentrating on the monthly payment. Record how much you save by increasing the excess and calculate the break-even period. Then consider a realistic claim scenario involving one person and, for family cover, a more demanding scenario involving two or more people.

A simple comparison might look like this:

This simplified example shows why the cheapest annual premium is not automatically the cheapest option in a year when you claim. It also excludes co-payments, uncovered bills and renewal effects, all of which should be considered separately.

Finally, decide whether you could pay the excess today—not after several months of saving. If the answer is no, the amount is probably too high, regardless of how attractive the premium appears. Our guide to choosing private health insurance in the UK provides a broader checklist for comparing complete policies.

What if there is a disagreement about the excess?

Begin by asking the insurer to explain which policy term it has applied and how the amount was calculated. Sometimes a disagreement results from an invoice being assigned to a new claim, a policy-year reset or different understandings of whether two treatments relate to the same condition.

If the explanation does not resolve the issue, make a formal complaint to the insurer. Include relevant authorisation numbers, invoices, dates, policy documents and copies of any earlier advice you received.

If you are dissatisfied with the final response—or the insurer has not responded within the applicable time limit—you may be able to refer the complaint to the Financial Ombudsman Service. The service considers complaints involving private medical and other health-related insurance. Eligibility and referral deadlines apply, so check its current guidance rather than delaying.

An excess dispute is different from a claim being rejected because the treatment is excluded or was not authorised. If the insurer refuses the claim itself, see our guide to what to do when a health insurance claim is refused.

Frequently asked questions

Do I pay a private health insurance excess every time I claim?

Not necessarily. Some policies apply the excess once per person during each policy year, while others may apply it to each claim or condition. The policy wording should explain the rule. Ask the insurer for a worked example if it is unclear.

Do I pay the excess directly to the insurer?

Sometimes, but not always. You may pay the consultant, hospital or clinic directly, or the insurer may settle the bill and recover your contribution afterwards. Confirm the payment process when the treatment is authorised.

Does a £500 excess mean insurance will not help with treatment costing less than £500?

It may mean that you pay the full cost of that treatment yourself. However, under an annual excess, an eligible bill below £500 may still count towards the excess, allowing later eligible costs in the same policy year to take you beyond it. This depends on the policy terms and authorisation requirements.

Can I change my excess after taking out the policy?

Insurers may allow you to change it at renewal, but changes during the policy year are less common. Increasing or reducing it could affect premiums and ongoing claims, so ask how the change would apply before agreeing to it.

Does each person on a family policy pay a separate excess?

Many family policies apply the excess separately to each insured person, but this is not universal. Look for wording such as “per member per policy year” and ask whether there is an overall family maximum.

Is a zero-excess policy always better?

No. It reduces the amount payable when claiming, but the premium may be significantly higher. Compare the annual price difference, the likelihood of using the cover and all other benefits and exclusions before deciding.

Will paying an excess affect my renewal premium?

The payment itself is only one part of the claim. Depending on the policy, making a claim may affect a no-claims discount or future pricing. Premiums can also rise because of age, medical costs and changes made by the insurer, even if you have not claimed.

What excess should I choose if I am unsure?

Choose an amount that you could pay promptly from savings without borrowing or cutting essential expenditure. Then check whether the premium saving adequately compensates for the additional amount you are accepting. If the wording remains unclear, speak to the insurer or a regulated insurance adviser before buying.