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Aipedia: Accountants

AI in accountancy: rules, risks and PI insurance

UK accountants may use AI, and no professional body has made an AI-specific rule; the technology-revised ethics Code and non-binding guidance set the duties. Those duties decide whether an AI error becomes a negligence claim that your professional indemnity (PI) policy has to answer.

In short

Accountants in UK practice use AI to draft accounts, commentary, research notes, client letters and meeting summaries, and to run AML and anomaly checks. No ICAEW, ACCA, ICAS or AAT rule targets AI directly. The IESBA technology revisions, enforced by ICAEW from 1 July 2025, require technology competence, a check that technology output is appropriate before you rely on it, and protection of confidential data. The PCRT AI guidance of January 2026 adds practical expectations, and the CCAB has a draft Statement out for comment. ICAEW, ACCA and AAT PI rules say nothing about AI, so cover turns on your policy wording.

How UK accountants are using AI

AI now sits inside much of the software an accountancy practice already runs, as well as in general-purpose generative AI chatbots that staff open in a browser. Typical uses include drafting statutory accounts and disclosure notes, writing management accounts commentary, building cash flow forecasts, answering technical queries, drafting client emails and advice letters, screening new clients for anti-money laundering (AML) purposes, flagging unusual ledger entries, and transcribing client meetings.

ACCA's Navigating ethics for trust report (October 2026), a survey of 1,178 respondents in 135 countries, found AI use is now the top-ranked ethical challenge, cited by 61% of respondents against 32% in 2024. In the same survey 72% said AI improves the quality and efficiency of their work. The pressure points it names are over-reliance, weak verification, confidentiality, explainability and accountability.

The rules that apply

There is no statutory regulator for general accountancy. Members are regulated by their professional bodies, and no body has made an AI-specific binding rule. The duties come from three places.

Our guide to ICAEW, ACCA and CCAB AI guidance sets out what is binding and what is guidance only.

Elden v HMRC: the warning case

In Gary Elden v HMRC [2026] UKFTT 41 (TC), decided on 8 January 2026, the taxpayer's representative was a firm of ICAEW-regulated chartered accountants. Its skeleton argument used AI "to aid conciseness and consistency", and the AI-produced case summaries were materially wrong. The Tribunal said at para 139 that this "lack of sufficient care amounts to professional incompetence on the part of any regulated individual or firm involved". It ordered future skeletons to carry a statement of truth and details of contributors' qualifications and regulator, and said it "will consider making references to any professional body". No referral was made in that case.

The main risks for accountancy firms

Where PI insurance fits

PI is compulsory for practising members of the main bodies. The ICAEW PII Regulations (effective 1 September 2024) set a minimum of £2m per claim and in the aggregate (reg 3.2), or 2.5 times fee income with a £250,000 floor where gross fee income is under £800,000 (reg 3.3), on ICAEW's approved minimum wording with six years' retroactive cover (reg 1.10). ACCA requires the greater of 2.5 times income or £100,000 below £600,000 of income, and at least £1.5m above it. AAT licensed members need full civil liability, fully retroactive cover.

None of these PI rules mentions AI. A civil liability policy usually responds to a negligence claim whatever tool contributed to the error, subject to the policy terms, but exclusions, notification conditions and renewal questions vary. Our accountants PI guide covers the rules, and PI for AI-using professionals covers the wider AI position.

Practical controls for a practice

How Apex helps

Apex arranges PI insurance for accountants in practice. A broker reviews your cover against your body's rules and checks how your policy treats AI-assisted work.

Aipedia guides for accountants

Sources

Frequently asked

Can accountants use AI tools for client work?

Yes. No UK accountancy body prohibits AI. The ethics Code requires you to understand the technology, check that its output is appropriate for the purpose, protect confidential data and explain limitations. The PCRT AI guidance adds that you remain ultimately accountable for the work.

Is there a binding AI rule for ICAEW or ACCA members?

No AI-specific binding rule exists. The binding duties are in the ethics Code as revised for technology, which ICAEW enforces from 1 July 2025 and ACCA adopts through the IESBA Code. The PCRT AI guidance, ICAEW reports and the CCAB draft Statement are guidance.

Will my PI policy cover a claim caused by an AI error?

Usually a civil liability policy responds to a negligence claim whatever tool was involved, but it depends on the wording, any exclusions and whether you met conditions such as prompt notification. The ICAEW, ACCA and AAT PI rules say nothing about AI, so check your own policy.

What happened in Elden v HMRC?

A firm of ICAEW-regulated chartered accountants used AI in a skeleton argument for the First-tier Tribunal, and the AI-produced case summaries were materially wrong. The Tribunal called this a lack of care amounting to professional incompetence and said it would consider referrals to professional bodies in future.

Check your PI covers how you use AI

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.

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Apex 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.