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  4. How insurance excess works

Insurance guide

How insurance excess works

Understand compulsory and voluntary excesses, how they affect your premium, what you may have to pay when you claim, and what to check before choosing a policy.

6 min read · Reviewed September 2026 · Insurance guide

Policy terms, excesses and claim conditions vary by insurer and cover type. Always check the policy schedule and wording before buying.

Insurance excess in brief

  • An excess is the amount you pay towards an eligible claim.
  • Your policy may include both a compulsory and voluntary excess.
  • These amounts can be added together.
  • A higher voluntary excess may reduce your premium, but can mean more to pay if you claim.
  • Different sections of the same policy can have different excesses.

What is an insurance excess?

An insurance excess is the amount you may need to contribute towards an eligible claim before the insurer pays the remaining covered amount.

The excess that applies depends on the policy, the type of claim and any voluntary excess you selected when buying the cover.

Think of the excess as your contribution to the claim, not an extra charge you pay every year.

Compulsory vs voluntary excess

Compulsory excess

  • Set by the insurer
  • Usually cannot be removed
  • May vary by claim type
  • Can depend on driver, property or cover type

Voluntary excess

  • Chosen by you
  • Can often be adjusted
  • Usually added to compulsory excess
  • A higher amount may reduce the quoted premium

Your total contribution to a claim can be the compulsory excess plus any voluntary excess you selected.

Worked example

How an excess affects a claim

Policy

Compulsory excess
£250
Voluntary excess
£150
Total excess
£400

If the insurer agrees a covered claim worth £2,000, you may need to contribute £400 and the insurer may pay the remaining £1,600, subject to the policy terms.

£2,000 claim − minus £400 total excess = equals £1,600 potential insurer payment

If the value of the claim is less than or close to the excess, making a claim may not result in a meaningful payout.

When different excesses can apply

A policy can have more than one excess. The amount can vary depending on the type of claim or who is claiming.

These are examples of where a different excess can apply. Not every policy includes all of them.

  • Accidental damage
  • Theft
  • Windscreen claims
  • Escape of water
  • Subsidence
  • Personal belongings
  • Young or inexperienced drivers
  • Legal expenses
  • Optional add-ons
Always check the policy schedule and wording rather than assuming the headline excess applies to every claim.

Does a higher excess make insurance cheaper?

Sometimes. Choosing a higher voluntary excess can reduce the premium quoted by an insurer, but the saving may be modest compared with the extra amount you would need to pay if you claim.

Before increasing your excess, ask:

  • Could I comfortably pay this amount at short notice?
  • How much premium am I actually saving?
  • Does the voluntary excess apply on top of another excess?
  • Would the total excess make smaller claims uneconomical?

What happens to the excess when you claim?

  1. 1Step 1

    Claim assessed

    The insurer checks whether the event is covered under the policy.

  2. 2Step 2

    Applicable excess identified

    The relevant compulsory and voluntary excesses are determined.

  3. 3Step 3

    Excess deducted or collected

    Depending on the claim, the excess may be deducted from the settlement or paid separately.

  4. 4Step 4

    Remaining eligible amount paid

    The insurer pays the remaining covered amount, subject to the policy terms and claim value.

What to check before buying

  • Total excess, not just voluntary excess
  • Excess for different claim types
  • Young/inexperienced driver excesses
  • Whether optional cover has its own excess
  • Whether your excess could exceed the value of a smaller claim
  • Whether you could afford the excess immediately
  • Whether changing the voluntary excess materially changes the premium

Common excess mistakes

  • Assuming the voluntary excess is the total excess
  • Choosing a very high excess to save only a small amount on the premium
  • Forgetting that some claim types have separate excesses
  • Assuming the excess is always paid the same way
  • Not checking whether an excess applies to optional add-ons
  • Comparing insurance quotes using price alone

Insurance excess FAQs

Answers to common questions about compulsory excess, voluntary excess and what you may need to pay when you claim.

Continue learning about insurance

Comprehensive vs third-party car insurance

What fully comprehensive, third-party fire and theft, and third-party only typically cover.

Read guide: Comprehensive vs third-party car insurance →

How no-claims discounts work

How a no-claims discount is earned, protected and reduced after a claim.

Read guide: How no-claims discounts work →

Explore all insurance guides

Reviewed September 2026

WiT Money editorial guide

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