Can AI Write Your Will? What to Know Before You Trust a Chatbot (2026)

It was inevitable. People are using AI for everything in 2026 — and “write my will” is now one of the most common late-night requests typed into a chatbot. It’s free, it’s instant, and the output looks remarkably professional.

So here’s the honest, non-scaremongering take from someone who fixes the fallout: AI is a genuinely useful tool for understanding wills. It is a risky tool for making one. The gap between those two things is where families get hurt.

The honest answer

A will isn’t a piece of writing — it’s a legal instrument that has to do a precise job, in a precise form, and only takes effect when you’re no longer here to correct it. AI is brilliant at producing fluent, confident text. It is not accountable for whether that text is valid, complete, or right for your circumstances. No chatbot carries professional indemnity insurance, and none can witness your signature.

Where AI genuinely helps

Used well, AI is a fantastic preparation tool. Before you ever speak to a planner, it can help you:

• Understand the jargon — executors, residue, nil-rate band, guardianship.
• Think through who you want to provide for, and the questions you hadn’t considered.
• Draft a clear summary of your wishes to hand to a professional, saving you time and money.
• Prompt you with “have you thought about…” scenarios — pets, digital assets, a vulnerable relative.

Walking into a consultation already clear on your wishes can genuinely reduce what you pay.

Where AI quietly fails

The problem with AI wills isn’t the dramatic, obvious error. It’s the plausible one. The clause that reads perfectly and does the wrong thing. A few real-world traps AI routinely misses:

• Unmarried partners. AI often assumes a spouse’s rights that simply don’t exist for cohabiting couples.
• Blended families. Leaving everything to a new partner can accidentally disinherit your own children — a trust is often needed, and AI rarely flags it.
• Failed gifts. Leaving a specific item you later sell, or a gift to someone who dies first, can fail silently without the right wording.
• Vulnerable beneficiaries. A straight gift to someone on means-tested benefits, or a child, can cause real harm where a trust would protect them.
• Tax. AI won’t structure your estate around your nil-rate bands or the 2027 pension changes.

The cruelty of an AI will is that everyone’s happy with it — right up until it’s read out, when it’s far too late to fix.

The bit AI can’t do for you: making it valid

Even a perfectly worded will is worthless if it isn’t executed correctly. In England & Wales a will must be in writing, signed by you with the intention of making it your will, and signed by two independent witnesses who are present when you sign — and crucially, a witness (or their spouse) must not be a beneficiary, or they lose their inheritance. This is the single most common way home-made wills fail, and no AI can do it for you.

Who can safely keep it simple

To be fair, not everyone needs a solicitor. If your situation is genuinely simple — you’re leaving everything to one person, you have no property complications, no business, no blended family, and a modest estate — a carefully made online will, perhaps prepared with AI’s help, can do the job. Honesty matters here: paying for complexity you don’t have is its own kind of waste.

The smart way to use AI and a professional together

The best approach in 2026 isn’t AI or a professional — it’s both, in the right order:

1. Use AI to learn, explore your wishes and draft a clear brief.
2. Be honest about your complexity — partners, children, property, business, tax.
3. Hand your brief to a regulated planner to draft, sense-check and execute it properly.

You get the speed and clarity of AI and the safety of a will that actually holds up. The professional step is usually far cheaper than people expect — and comparing a few regulated planners side by side is the quickest way to see exactly what your will should cost before you commit.