Insurance Curator 
Car insurance excess is one of those quietly confusing details that many UK drivers skim past at renewal, only to meet it face-to-face after an accident. Between voluntary and compulsory excess, plus the small print buried in your policy wording, it’s no wonder the whole topic feels overwhelming.
We’re going to clear that up. Our goal is simple: by the end of this guide, you’ll understand exactly what each type of excess means, how your choices shape your premium, and what actually happens when you claim.
What Is an Insurance Excess in Plain English?
An excess is the amount of money you agree to pay towards a claim before your insurer contributes anything. If your total repair bill comes to £1,200 and your excess is £250, you pay the first £250 and your insurer covers the remaining £950.
Think of it as a sharing arrangement between you and your insurer. You take on a defined slice of the financial risk, and in return, the insurer lowers your premium because they know you’ll think twice before claiming for minor scrapes.
The Two Types of Excess
| Type | Who Sets It | Where It Shows Up | Typical Amount |
|---|---|---|---|
| Compulsory Excess | The insurer | Always, in every policy | £100 – £500 |
| Voluntary Excess | You, the driver | Only if you choose to add it | £0 – £750 |
This is where many drivers get confused. You aren’t picking between two options; instead, you’re usually dealing with both at the same time. Most policies combine a compulsory excess set by the insurer with a voluntary excess you select yourself, and both apply to the same claim.
Compulsory Excess Explained: The Insurer’s Non-Negotiable
Compulsory excess is fixed by your insurance provider based on their assessment of risk. Certain drivers, vehicles, and circumstances automatically trigger a higher compulsory excess, and it is not something you can bargain down.
Why Do Insurers Set Compulsory Excess?
Insurers use compulsory excess to protect themselves against predictable risks. Cars with expensive parts, younger or newly qualified drivers, and certain postcode areas all tend to attract higher compulsory excesses because the likelihood or cost of a claim is greater.
Take a brand-new driver in a Ford Fiesta versus an experienced driver with 20 years of no-claims discount. The new driver’s policy will almost certainly carry a higher compulsory excess. This reflects the insurer’s statistical expectation, not a judgement on your personal driving habits.
Common Situations That Increase Compulsory Excess
- Young or newly qualified drivers under 25
- High-performance or prestige vehicles with costly repair bills
- Modified cars that deviate from factory specifications
- High-risk postcodes where accidents or theft are more common
- Certain occupations that involve more frequent driving, such as delivery work
Can You Reduce a Compulsory Excess?
No, not directly. Because the compulsory excess is set by the insurer as part of their underwriting, you cannot remove it or lower it through negotiation. The only way to avoid a high compulsory excess is to shop around and find an insurer whose underwriting rules are more favourable to your profile.
This is where comparison sites earn their keep. For those looking to lower their excess burden, checking how different providers apply compulsory excess against your specific circumstances can save hundreds of pounds over a year.
Voluntary Excess Explained: Your Choice, Your Trade-Off
Voluntary excess is the figure you choose to add on top of the compulsory excess. It is entirely optional, though some insurers will set a minimum voluntary excess as part of a policy deal or sweetener, which makes reading the fine print essential.
How the Two Excesses Work Together
Imagine your policy carries a compulsory excess of £250 and you choose a voluntary excess of £300. On any claim, your total excess exposure is £550. You pay £550, and your insurer pays everything above that.
This combined figure is the number that really matters when you’re budgeting for a claim. Many drivers mistakenly believe their voluntary excess only applies in certain circumstances; in reality, unless stated otherwise, both excesses apply together to each claim.
The Appeal of Choosing a Higher Voluntary Excess
The main reason drivers raise their voluntary excess is to lower their premium. Because you’re accepting more of the financial risk, insurers reward you with cheaper monthly or annual costs. The saving can range from a modest 5% to over 30%, depending on your provider and the size of the voluntary excess you select.
| Voluntary Excess Chosen | Approximate Premium Saving |
|---|---|
| £0 (no voluntary excess) | Baseline premium |
| £100 | 3% – 8% lower |
| £250 | 10% – 15% lower |
| £500 | 15% – 25% lower |
| £750+ | 20% – 30% lower |
Where It Gets Dangerous
The trap is over-extending yourself. Choosing a £1,000 voluntary excess to reduce premiums by £150 a year sounds smart until you hit a £900 repair bill and discover you’re funding the entire repair yourself, while still paying the insurer and losing your no-claims bonus.
A healthy rule of thumb is to set your voluntary excess at a figure you could comfortably pay tomorrow. If your savings account would struggle to cover it, that excess is probably too high.
How Your Excess Choice Affects Your Premium: The Real Trade-Off
Car insurance pricing is built on balancing risk between you and the insurer. When you accept a higher excess, you remove some of the insurer’s exposure to small claims, which reduces their cost of covering you. Part of that saving is passed back through your premium.
Why the Saving Isn’t Always Linear
You might expect a £500 voluntary excess to halve your premium, but it won’t. Insurers still price for the possibility of catastrophic claims, legal costs, and third-party injury payouts. The excess only reduces their risk on the first few thousand pounds of a claim, which is a relatively small component of the overall risk.
The Effect on Annual Costs
Let’s work through an example. Suppose your annual premium with no voluntary excess is £480.
- Adding a £200 voluntary excess might bring the premium down to around £440, saving £40 a year.
- Adding a £500 voluntary excess might bring it to £390, saving £90 a year.
That £90 saving sounds appealing, but if you make a claim the following year, you’ll pay £500 before your insurer pays a penny. If you claimed every year for five years, you’d spend £2,500 in excess payments to save roughly £450 in premiums. The maths quickly turns emotional.
When a Higher Voluntary Excess Makes Sense
It is not always a bad idea. If you are a careful driver, use your car rarely, or have built up enough savings to absorb an unexpected cost, a higher voluntary excess can be a perfectly sensible way to lower ongoing costs. The key is matching your excess to your actual risk profile rather than chasing the lowest headline premium.
The Claims Reality: What You Actually Pay When the Worst Happens
Excess decisions feel abstract until you’re standing in a cold car park staring at a dented bumper. Let’s walk through the likely scenarios so you know exactly where you stand.
Scenario One: You’re at Fault
You reverse into a bollard and the rear bumper needs replacing. The repair bill is £780.
- Your combined excess is £450 (compulsory £250 + voluntary £200).
- You pay £450; your insurer pays £330.
- You lose some or all of your no-claims discount.
- Your renewal premium will almost certainly rise.
You are now facing an out-of-pocket cost of £450 plus higher premiums for years to come. This is the moment a high voluntary excess suddenly stops looking cost-effective.
Scenario Two: You’re Not at Fault
Another driver rear-ends you at a roundabout and admits fault. Their insurance should cover your repairs, and your excess technically shouldn’t end up as your responsibility.
But here’s the catch: your insurer will often ask you to pay your excess upfront while they recover the cost from the third party’s insurer. It can take weeks or months to get that money back, and it doesn’t always happen smoothly if liability is disputed.
Scenario Three: An Uninsured Driver
You return to find your car damaged in a hit-and-run. A claim under the Motor Insurers’ Bureau process can still involve your excess. Many drivers are shocked to discover they’re out of pocket through no fault of their own.
What About Total Loss?
If your car is written off, your excess is deducted from the settlement you receive. If your car is worth £3,000 and your excess is £500, you receive £2,500. Some insurers have been known to inflate the declared value slightly, but the deduction is always applied.
Common Excess Myths, And the Facts That Correct Them
Misinformation about excess spreads quickly, so let’s dismantle the most persistent myths.
Myth: “My Voluntary Excess Only Applies If I Make a Claim”
False. Your voluntary excess only ever applies when you claim, but when it does, it applies fully. There’s no reduced rate for voluntary excess on minor claims.
Myth: “I Don’t Pay Excess If the Other Driver Is at Fault”
Technically untrue at the point of claim. You may pay your excess upfront and reclaim it later, but between making the claim and recovering the money, it comes out of your pocket. In disputed cases, you might never recover it.
Myth: “Choosing a Higher Excess Always Saves You Money”
Not in the long run. The premium saving is guaranteed, but the excess payment is uncertain. If you claim just once in five years, the savings are often wiped out entirely.
Myth: “Excess Is Applied Per Claim, Not Per Incident”
Actually, it’s both. Each claim has its own excess, but a single incident can produce multiple claims. Hit another car and a lamppost? That’s potentially three claims (your car, their car, the public property) and three excess payments.
Myth: “Windscreen Claims Don’t Involve Excess”
This one varies. Many policies offer free windscreen repair (no excess), but replacement often attracts an excess. If your policy specifies a separate windscreen excess, check it before agreeing to the replacement.
How to Choose the Right Excess Level for Your Circumstances
There’s no single “correct” excess that works for every driver. The right number depends on your financial situation, driving habits, and appetite for risk. Work through these considerations and you’ll land on a sensible figure.
Ask Yourself These Questions
- Could I pay my combined excess tomorrow? If the answer is a stressful no, keep it low.
- How often do I actually claim? A claim every two or three years means a higher excess hurts more.
- What kind of journeys do I take? City driving, tight car parks, and winter commutes all raise the chance of a claim.
- Do I have other savings to fall back on? A generous emergency fund supports a higher voluntary excess.
- What does my no-claims bonus mean to me? Remember, excess applies on top of losing that discount.
Step-by-Step: Choosing Your Voluntary Excess
- Find out your insurer’s compulsory excess for your exact situation.
- Add any excess your finance agreement requires (some lenders set their own).
- Decide the maximum total you could comfortably pay from savings.
- Deduct the compulsory excess to get your sensible voluntary excess ceiling.
- Get quotes at several voluntary excess levels to see the actual saving.
- Compare that saving against the extra risk before committing.
The Temptation to “Maximise” the Excess
Comparison sites make it easy to slide the voluntary excess slider to the maximum to see the cheapest price. Resist this as a default. The cheapest quote is only good value if you can afford the excess when it matters.
How Your Age and Driving Experience Shape the Excess Conversation
The over-50 audience we often guide through insurance decisions faces a particular puzzle. Mature drivers typically enjoy some of the lowest premiums in the UK, which changes the economics of volunteering a high excess.
For Experienced Drivers Over 50
With decades of clean driving history, your baseline premium may already be modest, so the percentage saving from a higher excess translates into fewer pounds. A 25% discount on a £300 premium is only £75 a year. Meanwhile, your combined excess might be £600, meaning you’d need eight claim-free years just to break even.
For Younger Drivers
Younger drivers face the opposite maths. With premiums often exceeding £1,500, shaving 20% through a higher voluntary excess saves £300 or more annually. That’s why you’ll see insurance guides aimed at young drivers recommending higher voluntary excesses; the savings genuinely alter affordability.
But let’s be honest: young drivers are statistically more likely to claim, and a £1,000 combined excess can turn a minor scrape into a financial emergency. The saving only helps if you never claim.
For Drivers With Existing No-Claims Protection
If you’ve paid for no-claims bonus protection, remember that it only protects your discount. It does nothing to reduce your excess. You can still pay your excess, and your insurer can still raise your premium at renewal even with your discount protected.
Special Circumstances That Change the Excess Rules
Windscreen and Glass Claims
Free windscreen repair is common, but replacement is a different story. Even a £50 fixed windscreen excess adds up, so check your policy before agreeing to any glass replacement.
Courtesy and Hire Cars
Many policies provide a courtesy car while yours is repaired. The catch emerges if you damage the courtesy car. Some policies extend your excess to it, while others apply a separate, higher excess for hire vehicles. Read that section of your policy carefully.
Foreign Driving (Green Card and European Cover)
Driving in Europe doesn’t automatically apply the same excess rules. Some policies increase your excess for claims abroad due to higher towing and storage costs. A breakdown on the continent can quickly turn into a £1,000 excess situation.
Telematics (Black Box) Policies
Insurers offering black box policies typically cap the voluntary excess you can choose, often at £100 or £250. This is deliberate; they want to encourage safe driving behaviour, not push you into financial pain after a minor incident.
SORN and Seasonal Cars
If your car is stored off the road part of the year, a comprehensive policy with a high voluntary excess can be a cost-effective way to protect a second or classic vehicle. Because the car is used infrequently, the chance of claim drops, making the arrangement more balanced.
What Experts Say: The Consumer Champion Perspective
Martin Lewis, the founder of MoneySavingExpert, has long advised drivers to avoid setting an excess they couldn’t comfortably afford, even when the premium saving looks tempting. His guidance consistently frames excess as an emergency affordability question rather than a pure cost-saving lever.
The consumer champion’s famous line on the subject is simple: don’t insure anything you can’t afford to lose, and don’t volunteer to pay anything you can’t afford to pay. While that advice originally concerned insurance more broadly, it maps perfectly onto voluntary excess decisions.
The Financial Conduct Authority (FCA) has also tightened rules around how insurers display excess amounts, ensuring they appear prominently on policy documents and at the point of quote. The regulator’s pricing reforms, introduced in 2022, require renewal quotes to be no higher than new business quotes for the same risk, which means shopping around remains effective for reducing this issue.
What the Consumer Groups Recommend
- Which? frequently warns that a high voluntary excess is the most common way drivers end up underinsured in practice.
- The Association of British Insurers (ABI) publishes guidance on how excess applies in different claim types.
- MoneySavingExpert calculators repeatedly show that excess savings are rarely worth more than £100–£150 annually for most drivers.
These voices align: choose a modest, affordable excess, and let the insurer carry the risk their premium is designed to cover.
Frequently Asked Questions About Car Insurance Excess
Do I Have to Pay Excess If the Accident Wasn’t My Fault?
Not in the long run, but often yes in the short term. Your insurer may ask you to pay the excess upfront, then recover it from the third party’s insurer. If liability is admitted and clear, you’re usually reimbursed. If it’s disputed, you might be waiting a long time, or never see it back.
Can I Change My Voluntary Excess Mid-Policy?
Yes, usually. Most insurers allow you to adjust your voluntary excess as long as you notify them and agree to any premium change. However, if you’ve already made a claim, changing it won’t affect that claim’s excess requirement.
Does a Higher Excess Affect My No-Claims Discount?
No direct link exists. Your excess is a financial contribution toward each claim, while your no-claims discount is separate. However, making a claim triggers both the excess payment and a potential discount loss, so they often appear together in practice.
Is There a Legal Maximum Excess in the UK?
No, the UK has no statutory cap on voluntary excess. Insurers set compulsory excess within their own commercial limits, and drivers can choose voluntary excess freely. That freedom is exactly why you must apply your own judgment.
Does My Excess Apply to Theft Claims?
Yes. If your car is stolen and not recovered, your excess is deducted from the settlement payout. This is why parked securely, in a garage if possible, matters more than many drivers realise.
Will Paying a Higher Excess Reduce My Monthly Payments Significantly?
It can, but the headline reduction can be misleading. A £30-a-month premium might drop to £25 with a £500 voluntary excess. Across a year, you’ve saved £60, but you’ve accepted a £500 liability. Most finance experts would call that a poor risk-to-reward ratio.
Making Your Final Decision: Practical Takeaways for Peace of Mind
After all this detail, the core message is refreshingly simple: your excess should be an amount you could pay without financial distress. The premium saving you gain by raising it should feel like a bonus, not a gamble.
If you’re renewing soon, run your quotes at two or three different voluntary excess levels and write down the annual saving for each. Then ask yourself honestly whether that saving justifies the risk. For most drivers, a combined excess of £250 to £500 strikes the right balance between affordable premiums and avoidable stress.
Finally, remember that excess is just one piece of the car insurance puzzle. A cheap policy with a punishing excess is rarely good value, and an expensive policy with rock-bottom excess may not be necessary. The right policy sits somewhere in the middle, matching your financial reality and your genuine risk exposure.
Understanding how voluntary and compulsory excess work together is exactly the kind of knowledge that saves you money without costing you sleep. Now that you know the difference, you can approach your next renewal with confidence, choose your numbers deliberately, and drive away knowing you’ve made a decision you can live with.