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As of 13 August 2026, AI can only partly claim the transferable nil-rate band.
This still needs a person who signs their name to it.
Can you do it?
15 minutesto a draft.
30 minutesto something you’d act on.
Cost, all in£0
Skill neededchat-fluent
Who has to check ita professional
What the alternative costsThe supplied tool data lists no priced professional alternative for this task.
If this goes wrong: the claim may contain unsupported information or miss relevant evidence, leaving you to correct the inheritance tax position or answer questions from HMRC.
What to actually do
Hand it to a person
The route this page recommends
Someone with a licence or accountable authority has to sign this before it counts.
Use a tool built for this
Second choiceDo it yourself
The distant thirdA chat interface, chat-fluent skill, and roughly 30 minutes until you can act on the result.
How to actually do it
- Open GOV.UK guidance on inheritance tax, probate and the transferable nil-rate band, and download or note the current form and submission instructions it identifies.
- Gather the will, death certificate, marriage or civil-partnership evidence, earlier estate and inheritance tax paperwork, records of gifts, estate valuations and any correspondence with HMRC or the probate service.
- Remove unnecessary National Insurance numbers, bank details and other private identifiers, then paste the remaining document text and a fact list into the prompt.
- Ask the chatbot to separate supported facts from missing information and to identify the current GOV.UK form or route without guessing.
- Compare every drafted field with the original document and the current GOV.UK instructions, replacing any unsupported entry with a confirmation request rather than a guess.
- Give the completed evidence checklist and unresolved questions to the executor or personal representative, then ask a solicitor to confirm the eligibility assessment and draft before submission if the estate or earlier transfer is not straightforward.
- Submit the claim only through the current official route stated by GOV.UK or by the solicitor handling the estate, keeping copies of the form and supporting evidence.
Prompt
I need help preparing a possible UK claim for the transferable nil-rate band after a death. This is not professional advice, and you must not decide eligibility where the facts are unclear. Use only the facts and documents I provide, together with current GOV.UK guidance if you can access it. If you cannot access current GOV.UK guidance, say so and do not state current rules as facts. Do not invent names, dates, values, relationships, gifts, exemptions or tax figures. Do not guess. First, list the facts and documents needed to assess the claim, including information about the deceased person, their spouse or civil partner, any earlier death, wills, gifts, estates and inheritance tax paperwork. Then: 1. Separate facts supported by my documents from facts that are missing or uncertain. 2. Explain in plain English which parts appear relevant to the transferable nil-rate band and which require a solicitor or HMRC to confirm. 3. Identify the current GOV.UK form or process that appears relevant, without relying on an outdated form name or instruction. 4. Produce a field-by-field draft using only supported facts, leaving unsupported fields as [NEEDS CONFIRMATION]. 5. Create a final evidence checklist showing which document supports each drafted answer. 6. List the questions I should ask a solicitor or HMRC before submitting anything. Do not submit anything, present the draft as a completed claim, or tell me that the claim will succeed. Here are the documents and facts: [PASTE REDACTED DOCUMENT TEXT AND FACTS HERE]
Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.
What it gets wrong
- AI cannot establish whether the family history and earlier estate facts are complete enough for the claim.
- AI cannot resolve an ambiguous will, uncertain gift history or conflicting estate records as a solicitor would.
- AI cannot confirm that its interpretation matches the current HMRC process unless you check the current GOV.UK guidance.
- AI cannot sign, submit or accept responsibility for the claim on behalf of the executor or personal representative.
What caps this at PARTLY: legal accountability, judgement under ambiguity and verification cost.
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.
| Axis | Score (0–2) |
|---|---|
| Output | 2 |
| Inputs | 1 |
| Verification | 1 |
| Liability | 1 |
| Effort delta | 2 |
| Total | 7 / 10 |
The methodology and its thresholds are published in full.
FAQ
- Can AI claim the transferable nil-rate band for me?
- No. AI can organise your evidence and prepare a draft, but the executor or personal representative must provide the facts and use the official HMRC process. A solicitor should confirm a serious or unclear case before submission.
- What documents do I need to claim the transferable nil-rate band?
- You may need the relevant wills, death and marriage or civil-partnership evidence, earlier estate and inheritance tax records, gift information and valuations. Use current GOV.UK guidance to confirm the evidence for your circumstances, then use AI to make a document checklist rather than to fill gaps.
- Can ChatGPT fill in form IHT402?
- It can help organise information for the form if you provide the supporting documents, but it must not guess at missing answers or confirm that the claim is valid. Compare every field with the current GOV.UK instructions and ask a solicitor to check an uncertain case.
- Is using AI to claim the transferable nil-rate band safe?
- It is suitable for extracting facts and preparing questions, not for making the final legal judgement. This is not professional advice, and the executor remains responsible for the claim, so a solicitor should check a serious, disputed or incomplete estate.
Nearby answers
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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