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Car insurance guide

Car insurance excess: compulsory and voluntary explained

Understand the excess on a UK car insurance policy, how compulsory and voluntary amounts add up, and what to check in your documents.

An excess is the part of an insured claim you pay yourself. A voluntary excess normally adds to the compulsory amount set by the insurer; it does not replace it.

Add the applicable amounts

For a fictional claim with a £200 compulsory excess and £150 voluntary excess, the combined contribution is £350. If the covered repair costs £1,400 and those are the only applicable excesses, the insurer's contribution would be £1,050.

This is an arithmetic example, not a quote. Different claims or drivers can have different excesses. Check the schedule and policy wording rather than assuming a single amount applies everywhere.

A lower premium can mean a higher contribution

Choosing a higher voluntary excess may reduce the premium, but increases what you pay towards an applicable claim. Look at the premium and total excess together, including whether you could meet that contribution if a claim occurred.

Questions to ask the insurer

Use your actual policy documents to answer these questions. If an amount or exception is unclear, ask the insurer to identify the relevant wording.

  • What compulsory and voluntary excesses apply?
  • Are there separate amounts for glass, theft or particular drivers?
  • When would I need to pay the excess?
  • How would a recovery from another party affect my payment?

Sources and scope

Prepared by Umofi. Sources checked on 17 September 2026. General information, not a personal recommendation. Check the current source and the firm’s written terms before acting.