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Aipedia: Accountants
No UK accountancy body has made an AI-specific binding rule; the binding duties sit in the ethics Code as revised for technology, and the rest is guidance. Knowing which is which tells you what a disciplinary panel or court is likely to measure your AI use against.
Part of: AI in Accountants
In short
For accountants, the binding AI-relevant duties are in the IESBA-based ethics Code, revised for technology and enforced by ICAEW from 1 July 2025: competence that includes technology awareness (113.1 A3), explaining limitations (R113.3), confidentiality of data in any form (R114.3) and checking that technology output is appropriate for its purpose (R320.11). ACCA adopts the IESBA Code in full. Everything else is guidance: the PCRT AI guidance of January 2026, ICAEW reports, ACCA research, IESBA staff material and the CCAB draft Statement of June 2026, which is not yet final.
Accountancy in the UK has no single statutory regulator. ICAEW, ACCA, ICAS and AAT regulate their members, and the FRC regulates audit. As at October 2026 none of them has issued an AI-specific binding rule, and no published ICAEW, ACCA or AAT disciplinary decision about AI misuse was found. What binds members is the ethics Code. Everything else listed below is guidance that explains how the Code applies to AI, which still matters because it shows what the profession expects. See the accountancy AI overview for how this fits together.
IESBA issued its technology-related revisions to the Code on 11 April 2023 (corrected 30 May 2023), effective 15 December 2024. ICAEW's Council approved an aligned Code in March 2025 and ICAEW enforces it from 1 July 2025. ACCA adopts the IESBA Code in full as its Code of Ethics and Conduct, binding members, affiliates, students and regulated non-members. The provisions most relevant to AI, using the numbering in the published IESBA text, are:
Legal commentators have read these provisions as applying to AI while noting that they "remain largely untested".
ICAEW's Ethics and AI roundtable report (18 October 2024) recommends treating AI as an ethical issue and not only a risk issue, clear accountability with an AI oversight role, meaningful human review that avoids both automation bias and "token oversight", vendor due diligence, openness with clients and continuous training. ICAEW also publishes a Generative AI Guide with an ethics chapter and an ethics and new technologies hub.
AAT, ACCA, ATT, CIOT, ICAEW, ICAS and STEP jointly issued the PCRT Topical Guidance on the Use of Artificial Intelligence on 19 January 2026. It applies to any accountant doing UK tax work. Key points: an engagement letter statement about possible AI use (para 1.3); responsibility for staff under supervision (1.6); training on any tool used (3.3); treat output as if "prepared by a less experienced junior colleague" (3.4); members "remain ultimately accountable" (3.5); and client data in public AI tools "is likely to constitute a breach of client confidentiality" without consent (4.2). It also suggests an audit trail of tools used and screenshots of prompts. AAT applies this guidance; its Digital ethics note does not mention AI.
The CCAB Ethics Group launched an AI Hub that gathers member-body guidance. Its Draft Statement to the Profession on the Ethical Use of AI is an exposure draft dated 6 June 2026, with six draft case studies discussed at an online event on 25 September 2026. The draft says accountants "cannot abdicate responsibility for outputs produced by their use of AI tools and systems", including AI agents; asks for specific client consent before data goes into AI tools and recommends enterprise-grade tools; suggests disclosing AI use, including in engagement letters; says never accept output at face value; asks firms to record judgements and safeguards; and proposes "constrained autonomy", monitoring and kill switches for agents. It is not final. Chartered Accountants Ireland published a concise guide in August 2026 stating "Accountability remains with people, not systems" and warning against "shadow AI".
ACCA has issued no AI-specific rule. Its AI Monitor paper looks at ethical threats, and its October 2026 ethics report says AI raises the need for professional judgement and that professionals must document how far they relied on AI outputs. IESBA staff published non-authoritative characteristics-based guidance in August 2026, covering opacity, non-determinism, data dependence and autonomy, and saying accountants "still remain responsible for their judgements and decisions".
| Publication | Date | Status |
|---|---|---|
| IESBA technology revisions | Effective 15 Dec 2024 | Binding through adopting bodies |
| ICAEW Code of Ethics (aligned) | Enforced from 1 Jul 2025 | Binding on ICAEW members |
| ICAEW Ethics and AI roundtable report | 18 Oct 2024 | Guidance |
| PCRT AI topical guidance | 19 Jan 2026 | Guidance |
| CCAB draft Statement | Exposure draft 6 Jun 2026 | Draft, not final |
| IESBA staff publication | Aug 2026 | Non-authoritative |
| ACCA ethics report | Oct 2026 | Research |
In practice the guidance converges: check output, protect client data, tell clients, supervise staff and keep records. A firm that can show it followed that pattern is in a stronger position if work is challenged. The ICAEW, ACCA and AAT PI rules contain nothing AI-specific, so insurance depends on your wording. See whether PI covers AI mistakes, how to handle AI disclosure in engagement letters, and the accountants PI guide. Tax-specific points are in AI in tax advice.
It is topical guidance issued jointly by seven professional bodies, not a new rule. It explains how existing duties apply to AI in tax work, so it is likely to be relevant if a member body or tribunal looks at how a member used AI.
Not as at October 2026. The Statement is an exposure draft dated 6 June 2026, with six draft case studies discussed at an online event on 25 September 2026. Watch the CCAB AI Hub for the final version.
R320.11 in the IESBA technology revisions (as numbered in the published text) requires an accountant to decide whether using technology output is appropriate for the intended purpose. Paragraph 113.1 A3 on technology competence and R113.3 on explaining limitations also apply.
No published ICAEW, ACCA or AAT disciplinary decision about AI misuse was found as at October 2026. In Elden v HMRC the First-tier Tribunal criticised an accountancy firm over AI-generated case summaries but made no referral.
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