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YES

As of 13 August 2026, AI can calculate your insurance excess.

Most people should do this themselves; the prompt is on this page.

Can you do it?

5 minutesto a draft.

15 minutesto something you’d act on.

Cost, all in£0

Skill neededchat-fluent

Who has to check ityou

What the alternative costsThe available tool data does not provide a price for an insurer or adviser to confirm an insurance excess.

If this goes wrong: you can spot the discrepancy against the policy or have the insurer confirm the amount before proceeding with a claim.

What to actually do

  1. Do it yourself

    The route this page recommends

    A chat interface, chat-fluent skill, and roughly 15 minutes until you can act on the result.

    How to actually do it

    1. Open your current policy schedule and policy wording, then find the sections labelled excess, deductible, claims or special conditions.
    2. Copy the compulsory excess, voluntary excess, claim amount and any wording about per-claim, per-item or multiple excesses into a note.
    3. Remove unrelated personal information, then paste the note and the relevant policy wording into a chatbot with the prompt above.
    4. Check the chatbot's arithmetic by adding the stated compulsory and voluntary excesses yourself and comparing each figure with the policy schedule.
    5. If the wording is unclear or the result depends on a special condition, contact your insurer and ask it to confirm the excess for the specific claim before authorising repairs or submitting the claim.

    Prompt

    Calculate my expected UK insurance excess from the information below. Use only the policy wording and figures I provide, and do not guess missing terms.

Policy type: [for example, car, home or pet]
Compulsory excess: [amount and currency]
Voluntary excess: [amount and currency, or state that there is none]
Other excesses or special conditions: [paste the exact relevant wording]
Claim amount or estimated repair cost: [amount and currency]
Policy wording and schedule: [paste the relevant sections]

Give me:
1. The excess I would normally pay, showing whether the compulsory and voluntary excesses are added together.
2. The amount the insurer might pay after the excess, if the claim amount is above the excess.
3. A separate calculation if the policy has an excess per item, per person, per incident or another special rule.
4. Any information that is missing, ambiguous or needs confirmation from the insurer.

Show the arithmetic plainly. Do not treat an excess as a premium, and do not assume that an insurer will accept the claim. If the policy wording does not support a definite answer, say so and identify the exact clause I need to check.

    Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.

  2. Use a tool built for this

    Second choice

  3. Hand it to a person

    The distant third

    A person who owns the outcome does this end to end, worth it when the failure is dear.

What it gets wrong

  • AI cannot know which version of your policy applies unless you provide the current schedule and wording.
  • AI cannot decide whether the insurer will accept the claim or whether an exclusion applies.
  • AI can miss a special excess buried in wording about drivers, items, incidents or types of damage.
  • AI cannot make the insurer honour its interpretation of an unclear policy clause.

Even on a YES, the friction has a name: context depth, judgement under ambiguity and stakes of error.

How we scored this

Five axes, each scored nought to two by hand: ten means AI carries the task cleanly, and the thresholds that turn a total into YES, PARTLY or NO are published in the methodology. Each axis name links to its definition.

AxisScore (0–2)
Output2
Inputs2
Verification2
Liability1
Effort delta2
Total9 / 10

The methodology and its thresholds are published in full.

FAQ

Can AI calculate my insurance excess?
Yes, if you provide the current policy wording, the compulsory excess, the voluntary excess and the estimated claim amount. It can show the arithmetic, but your insurer must confirm any unclear or special policy condition.
Does my voluntary excess get added to my compulsory excess?
Often they are added together, but the policy wording controls the answer. Give the chatbot the exact excess clause and check its result against your schedule rather than relying on a general rule.
What information does AI need to calculate my insurance excess?
It needs the current policy schedule, relevant policy wording, compulsory excess, voluntary excess and the claim or repair amount. It also needs any wording about excesses applying per item, person or incident.
Can I trust an AI calculation of my insurance excess?
You can use it as a calculation aid when you can compare every input and formula with your policy. Ask the insurer to confirm the amount before making a claim if the wording is unclear, the claim is large or more than one excess may apply.

Nearby answers

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Assessed by gpt-5.6-luna (gpt-5.6-luna) on 2026-08-13, second-checked by an independent model. Wrong somewhere? Email [email protected] and it gets re-checked.

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