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Aipedia: Bookkeepers
A bookkeeper who answers a client's tax question using an AI chatbot is giving tax advice, and is responsible for it as if they had written it unaided. Chatbots can invent rules and cases, and PI may not cover advice outside declared services.
Part of: AI in Bookkeepers
In short
Clients often ask their bookkeeper tax questions, and a generative AI chatbot can produce a fluent answer instantly. But ICB s.12(a) says members should not accept work beyond their competence, and AAT members doing tax work must follow the PCRT AI guidance, which treats AI output like a junior colleague's work and says members remain ultimately accountable. Tribunals have warned about AI errors: in Harber v HMRC cited cases were not genuine, and in Elden v HMRC AI-drafted submissions were called professional incompetence. PI usually covers the activities declared to insurers, so tax advice outside them may be at risk.
Bookkeepers see a client's figures more often than anyone else, so clients ask them about expenses, VAT registration, dividends, mileage and deadlines. Many bookkeepers are competent to answer some of these questions. The difficulty comes with the ones just beyond their experience, where a chatbot seems to fill the gap. The answer sounds right, so it gets sent.
General chatbots are not tax research tools. They may mix up rules from different tax years or countries, miss recent changes, and present a guess in the same confident tone as a settled point. They also cannot see the client's wider circumstances, such as other income, how an asset is used or what was claimed in earlier years. Those are often exactly the facts that decide the answer.
For the full picture of the guidance, see the PCRT AI guidance explained.
In Harber v HMRC [2023] UKFTT 1007 (TC), a taxpayer cited First-tier Tribunal decisions that were not genuine; the Tribunal found they had been generated by AI. The PCRT AI guidance cites this case. In Elden v HMRC [2026] UKFTT 41 (TC), an accountancy firm's AI-drafted submissions were described as "professional incompetence" (para 139). Neither case involved a bookkeeper, and we found no disciplinary decision against a bookkeeper involving AI. Both show how quickly unchecked AI output is treated as the professional's failure. See AI hallucination liability.
Illustrative scenario: a sole trader asks whether they can deduct the cost of a van they also use at weekends. The bookkeeper asks a chatbot, which gives a confident answer and cites a rule that does not exist. The bookkeeper forwards it. The client claims the full cost, HMRC opens an enquiry, and the client faces extra tax, interest and a penalty, plus accountant's fees. The client blames the bookkeeper, whose engagement letter and PI proposal describe bookkeeping services only.
PI usually covers claims arising from the professional services described to the insurer. If you have declared bookkeeping only and give tax advice, the insurer may argue the claim falls outside cover, though much depends on the wording. Some policies cover any civil liability arising from your business, others only listed activities. Even where cover applies, the excess and limit may be tested by a tax claim. Read more at does PI cover AI mistakes.
Apex arranges PI for bookkeepers, and a broker can check that any tax work you do is declared. See the AI in bookkeeping hub and PI for AI mistakes.
Tax advice is not a regulated activity in itself, but ICB s.12(a) says not to accept work beyond your competence, and anyone paid to deal with HMRC for clients must register. Answer only what you are competent and engaged to answer.
AAT applies it to its members' tax work, so AAT bookkeepers doing tax work are covered. ICB and IAB have not adopted AI guidance, but its principles are a sensible benchmark for anyone answering tax questions with AI.
In Harber v HMRC (2023), an unrepresented taxpayer cited tribunal decisions that turned out not to be genuine. The Tribunal found they were AI-generated. The case is cited in the PCRT AI guidance as a warning about hallucination.
Possibly not. Cover usually depends on the services described in the proposal and schedule. Undeclared activities can lead to disputes over cover, so tell your broker about all the services you provide.
Tell us about your firm and the work you do. A broker will review how your current PI treats AI-assisted work, or arrange new cover. No fee for a quote. Or call 0117 325 0027.
Start a PI quote Request a callbackApex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority. Registered in England and Wales, company number 07014570. This page is general information about how AI is used in the profession and how insurance may respond. It is not legal, regulatory or insurance advice on your circumstances, and it does not guarantee that cover will be available or on what terms.
