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How Does Car Insurance Excess Work UK? (2026 Guide)

Car insurance excess is the amount you pay towards any claim before your insurer covers the rest. This guide explains compulsory vs voluntary excess, how to set the right level, and how it affects your premium.

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Chandraketu Tripathi
Finance Editor, Kaeltripton
Published 29 Mar 2026
Last reviewed 12 Apr 2026
✓ Fact-checked
How Does Car Insurance Excess Work UK? (2026 Guide)

Photo by Wander Fleur / Unsplash

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Key facts (2026): Car insurance excess is the amount you contribute to any claim. Every policy has a compulsory excess set by the insurer, and you can add voluntary excess on top to lower your premium — but make sure you can afford to pay both if you need to claim.

When you make a car insurance claim in the UK, you are required to pay a portion of the cost yourself before your insurer covers the remainder. This contribution is called your excess. It is one of the most misunderstood aspects of car insurance — and setting it incorrectly can leave you significantly out of pocket.

What Are the Two Types of Excess?

1. Compulsory Excess

This is set by your insurer and you have no control over it. It is typically higher for younger or inexperienced drivers, higher-risk vehicles, and certain claim types such as windscreen or fire damage. Compulsory excess tends to range from £100 to £500 depending on the policy and driver profile.

2. Voluntary Excess

This is the additional amount you choose to pay on top of your compulsory excess. Agreeing to a higher voluntary excess reduces your annual premium — but it increases your out-of-pocket cost if you claim. You must be able to pay both your compulsory and voluntary excess at the same time.

Important: If your total excess (compulsory + voluntary) is £800 and your repair costs £750, your insurer pays nothing — and you've used your claim, potentially losing your no claims discount. Always check whether claiming is worthwhile before you do.

How Excess Affects Your Premium

Voluntary Excess AddedTypical Premium Reduction
£0No reduction (base premium)
£100~5–8% saving
£250~10–15% saving
£500~15–25% saving
£1,000~25–35% saving (high risk if claiming)

These are approximate ranges — the actual saving depends on your insurer, vehicle, age, and history. Use comparison sites to test different excess levels before committing.

What Happens at the Point of a Claim?

When you make a claim, your insurer will deduct your total excess from the settlement. If your car is repaired via an approved garage, you pay the excess directly to the garage. If your car is written off, the insurer pays you the agreed value minus your total excess. If the other party is at fault and admits liability, your insurer may recover the excess from them — but this can take time.

Does Excess Apply to All Claims?

Not always. Many policies have separate excess amounts for specific claim types. Windscreen repair is often covered for free (or at a reduced excess of £10–£25), while windscreen replacement carries its own excess. Fire and theft claims may have a different compulsory excess to standard accident claims. Always check your policy schedule carefully.

What Is the Right Excess to Set?

A good rule of thumb: set your voluntary excess at the maximum you could realistically afford to pay from savings at short notice. If you have £500 readily available, setting a £500 voluntary excess makes financial sense. If you could not find more than £200 at short notice, do not set a voluntary excess above that level regardless of the premium saving.

Tip: Young drivers offered telematics (black box) policies often face very high compulsory excess. Read the policy schedule carefully before purchasing — the headline premium can look attractive while the compulsory excess makes small claims unviable.

Our Verdict

Getting your excess right is one of the simplest ways to optimise your car insurance. A higher voluntary excess lowers your annual premium — but only makes sense if you can genuinely afford to pay it when you claim. Review your excess level every year at renewal: as your savings grow or your risk profile changes, so should your excess strategy.

Frequently Asked Questions

What is car insurance excess?

Excess is the amount you must pay towards any claim before your insurer covers the rest. It is made up of a compulsory excess (set by the insurer) and any voluntary excess you choose to add.

Does excess apply if I'm not at fault?

In most cases, you still pay your excess initially. If the other driver admits liability and their insurer accepts responsibility, your insurer may recover the excess from them — though this can take weeks or months.

Can I insure my excess?

Yes. Excess protection insurance is a low-cost add-on (typically £20–£50/year) that reimburses your excess after a claim. It can be worth considering if you have a high total excess.

Does my excess apply to windscreen claims?

It depends on the policy. Most comprehensive policies cover windscreen repair for free or at a small excess (£10–£25). Full replacement typically carries a higher separate excess. Check your policy schedule.

What happens if the repair cost is less than my excess?

You pay the full repair cost yourself — your insurer pays nothing. In this case it is usually not worth making a formal claim, as doing so may affect your no claims discount and push up your future premiums.

Does setting a higher excess always save money?

Generally yes, but the saving diminishes at very high levels. Most drivers find the sweet spot is a total excess of £400–£700. Beyond that, the premium saving rarely justifies the financial risk.


Disclaimer: This article is for informational purposes only and does not constitute financial or legal advice. Always verify figures with official sources such as gov.uk, the FCA, or your insurer before making decisions.

Last updated: March 2026 · Author: Chandraketu Tripathi

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Editorial Disclaimer

The content on Kaeltripton.com is for informational and educational purposes only and does not constitute financial, investment, tax, legal or regulatory advice. Kaeltripton.com is not authorised or regulated by the Financial Conduct Authority (FCA) and is not a financial adviser, mortgage broker, insurance intermediary or investment firm. Nothing on this site should be construed as a personal recommendation. Rates, figures and product details are indicative only, subject to change without notice, and should always be verified directly with the relevant provider, HMRC, the FCA register, the Bank of England, Ofgem or other appropriate authority before any financial decision is made. Past performance is not a reliable indicator of future results. If you require regulated financial advice, please consult a qualified adviser authorised by the FCA.

CT
Chandraketu Tripathi
Finance Editor · Kaeltripton.com
Chandraketu (CK) Tripathi, founder and lead editor of Kael Tripton. 22 years in finance and marketing across 23 markets. Writes on UK personal finance, tax, mortgages, insurance, energy, and investing. Sources: HMRC, FCA, Ofgem, BoE, ONS.

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