Insurance Curator 
How Excess Levels Impact the Cost of UK Health Insurance and Your Out‑of‑pocket Risk
If you’ve shopped for private health insurance in the UK, you’ve seen the term “excess.” It’s the amount you pay towards your own treatment before the insurer covers the rest. Choosing the right excess level is one of the most powerful levers you have to control your premium — but it also directly affects your out‑of‑pocket risk. Understanding this trade‑off can save you hundreds of pounds a year while still protecting you from a nasty surprise when you need care.
For a deeper look at how premiums are built, check out our guide on Average Cost of Private Health Insurance in the UK by Age and Cover Level. And if you want to compare the numbers in detail, the book Health Insurance, Third Edition offers a solid academic foundation on how deductibles (excess) work in practice.
What Is an Excess in UK Health Insurance?
In the UK private health insurance market, an excess is the fixed amount you must pay towards any claim. For example, if your policy has a £250 excess and your hospital bill is £2,000, you pay the first £250 and the insurer pays the remaining £1,750.
Excesses can be structured in two ways:
- Per‑claim excess: You pay the excess each time you make a new claim.
- Annual excess: You pay the total excess once per policy year, no matter how many claims you make.
Most UK policies use a per‑claim excess. The higher the excess you choose, the lower your monthly or annual premium — because you are taking on more of the initial financial risk.
The Trade‑Off: Lower Premiums vs Higher Out‑of‑Pocket Costs
Choosing a high excess can reduce your premium by 20% to 40% compared to a zero‑excess policy. That is a substantial saving, especially for young, healthy individuals who rarely claim.
But here is the catch: if you do need treatment, you must have that cash ready. A high excess can turn a minor procedure into a significant expense.
For families or couples, the risk is multiplied. Each member may trigger a separate per‑claim excess. That is why we always recommend reviewing your Family Health Insurance Costs in the UK: What Couples and Parents Can Expect to Pay. The trade‑off changes entirely when multiple people are covered.
Typical Excess Amounts and Their Impact on Premiums
The table below shows common excess levels and the approximate premium reduction compared to a £0 excess policy. (Figures are indicative based on market averages for a standard individual policy in England.)
| Excess Amount | Approximate Premium Reduction |
|---|---|
| £0 | 0% (baseline) |
| £100 | 5–10% |
| £250 | 15–20% |
| £500 | 25–30% |
| £1,000 | 30–40% |
Keep in mind that postcode and age also influence these percentages. For example, a policyholder in central London may see a smaller percentage reduction because the base premium is already high. You can read more about regional variation in How Your UK Postcode Affects Health Insurance Premiums: Regional Price Differences Explained?.
How to Choose the Right Excess Level for Your Situation
There is no one‑size‑fits‑all answer. The right excess depends on your financial health, age, and willingness to take risk. Use this checklist to decide:
- Do you have an emergency fund? If you can comfortably cover £500 or £1,000, a higher excess makes sense.
- How often do you visit a specialist? If you rarely claim, a high excess saves you money in the long run.
- Are you covering children or elderly parents? Older age groups and children may need more frequent care, so a lower excess protects against multiple small claims.
- Can you afford a cash lump sum? If a £1,000 excess would cause financial strain, pick a £250 or £100 excess.
For more practical ways to cut costs without sacrificing cover, see Ways to Reduce UK Health Insurance Costs Without Losing Essential Cover.
Excess and Out‑of‑Pocket Risk: Real Examples
Let’s put numbers to the risk. Imagine two similar policies for a 35‑year‑old non‑smoker in Manchester.
- Policy A: £0 excess, premium £65/month
- Policy B: £500 excess, premium £45/month
Over a year, Policy B saves £240. If you make one claim in that year (say, a routine knee arthroscopy costing £3,000), with Policy A you pay nothing. With Policy B you pay £500. That’s £260 more than the premium saving.
But if you make no claims for three years, Policy B saves you £720. That’s a clear win — unless you suddenly need two separate procedures in one year, which would mean two £500 excess payments.
In cities like London, where premiums are already higher, the savings from a high excess can be even more dramatic. However, the out‑of‑pocket risk remains the same. You can explore the London premium landscape in How Your UK Postcode Affects Health Insurance Premiums.
Additional Factors That Affect Premiums Beyond Excess
Your excess is only one piece of the pricing puzzle. Insurers also weigh lifestyle factors heavily. For example:
- Smoking status: Smokers pay 50–100% more.
- Body Mass Index (BMI): A BMI above 30 often triggers a surcharge.
- Medical history: Pre‑existing conditions are usually excluded or loaded.
If you improve your health markers, you can reduce your premium even with a low excess. Read our dedicated guide on How Smoking, BMI and Lifestyle Choices Influence UK Health Insurance Prices?.
Questions to Ask Before Choosing a Policy
Before you sign up, make sure you understand the finer points of the excess.
- Is the excess per claim or per year? This changes your maximum out‑of‑pocket exposure.
- Does the excess apply to outpatient consultations? Some policies waive the excess for GP or specialist visits.
- Are there any excess‑free options for certain treatments? For example, cancer cover often has its own excess rules.
- Can I change the excess after the policy starts? Some insurers allow mid‑term adjustments, but most require renewal changes.
Final Thoughts: Balancing Cost and Risk
Excess levels are a personal choice. There is no right or wrong — only what fits your cash flow and risk appetite. If you are young, healthy, and have a healthy emergency fund, a £500 or £1,000 excess is a smart way to lower your premium. If you have a family or chronic health concerns, a lower excess protects you from repeated out‑of‑pocket hits.
To help you choose the right balance, the practical guide Your Map to Health Insurance: Pick Your Best Plan, Save Money, and Avoid Expensive Mistakes walks through real‑world scenarios.
Remember, the cheapest policy is not the best if it leaves you exposed when you need care most. Compare excess options side by side, ask your insurer for clear examples, and always keep a little aside for that unexpected excess payment. That way, you get the savings today without the stress tomorrow.