Aipedia: Tax advisers

AI tax planning ideas and aggressive schemes

Aipedia, by the Apex broking team · Last reviewed 2026-10-27

Generative AI can suggest tax planning ideas, but some will be contrived or legally uncertain, and an adviser who passes them on is responsible under PCRT. Planning claims are among the most expensive a tax adviser can face.

Part of: AI in Tax advisers

In short

Ask a generative AI chatbot how to reduce a tax bill and it will usually offer a list of ideas, some sensible and some that HMRC would regard as contrived. The PCRT AI guidance includes a scenario in which an AI-generated report recommends an aggressive scheme, and reminds members that the Standards for Tax Planning still apply and that contrived planning must be avoided. If planning fails, clients may claim the extra tax charges, penalties and costs. PI usually responds to negligent advice, subject to the terms, but dishonesty and some scheme-related exclusions can limit cover.

How AI turns up in planning work

Advisers use AI to brainstorm options for a client's situation, to compare structures, and to draft planning reports. Clients use it too, and increasingly arrive with a chatbot's suggestion and ask the adviser to implement it. A model trained on large amounts of online material will have seen marketed schemes and forum discussions alongside legitimate guidance. It does not reliably tell the difference, and it rarely mentions anti-avoidance rules unless asked.

The duties that apply

Standards for Tax Planning: part of PCRT and expressly preserved by the AI guidance.
Professional behaviour (paras 5.1 to 5.7): avoid contrived planning and negligent work. The aggressive-scheme scenario sits here.
Integrity (1.x): be able to explain how a recommendation was reached.
Competence (3.4 and 3.5): check the analysis against current law and stay accountable.
Updated PCRT from 1 January 2026: new provisions cover disclosure of relationships with third-party tax planning providers (paras 2.7 to 2.8), second opinions (2.15) and credible-basis disagreements (3.8 to 3.10).

A second opinion on a chatbot's planning idea is still advice under PCRT, so the adviser cannot treat it as an informal comment.

What can go wrong

Illustrative scenario: a company owner brings a planning idea produced by a chatbot. It routes profits through a series of steps that appear to reduce tax significantly. The adviser asks an AI tool to sense-check the steps, receives a confident summary that the structure is effective, and implements it with minor changes. HMRC challenges it under anti-avoidance rules. The client faces the tax, interest and penalties, plus the cost of the dispute, and argues that a competent adviser would have warned that the arrangement was contrived and uncertain.

The risk grows with volume. A firm that uses the same AI prompt to generate planning ideas for many clients may repeat the same flawed structure across its client base, turning one error of judgement into a series of related claims.

Even where the planning is lawful, an AI-drafted report may overstate certainty. Missing caveats about legal uncertainty can feature in planning claims.

How PI usually responds

Negligent planning advice is a civil liability claim, and the CIOT/ATT PII Regulations require cover for all civil liability from tax services. Whether the client's tax is a recoverable loss depends on whether it would have been paid anyway; costs, penalties and fees for failed planning are more often in issue. Several features can limit cover:

dishonesty or fraud exclusions, usually with protection for innocent partners; see dishonesty extensions;
exclusions or restrictions for certain types of scheme work in some wordings;
fines and penalties levied on the firm, commonly excluded; see the fines and penalties exclusion;
non-disclosure of planning work on the proposal, which can affect cover except where the minimum terms prevent avoidance (4.1(d)).

Practical controls

Treat any AI planning idea as unverified until you have analysed it yourself.
Check anti-avoidance rules specifically; do not rely on the tool to raise them.
Record the legal uncertainty in writing and get the client's acknowledgement.
Decline planning that you would not be comfortable defending as reasonable.
Disclose any relationship with a third-party planning provider, as updated PCRT requires.

How Apex helps

Apex arranges PI for tax advisers, including firms that give planning advice. A broker can check how your wording treats planning work and help you describe it accurately on the proposal.

Sources

Frequently asked

Does PCRT ban advisers from using AI for planning?

No. The PCRT AI guidance allows AI use, but the Standards for Tax Planning still apply in full and members must avoid contrived planning. Its scenarios include an AI-generated report recommending an aggressive scheme, which the member must recognise and decline.

What if the client found the idea using AI, not me?

If you review or implement it, you are giving advice. The updated PCRT applies to second opinions (para 2.15). You need to assess the idea properly and warn of risks, whatever its source.

Should I tell the client that AI was involved in the planning analysis?

The PCRT AI guidance recommends transparency about AI use, including an engagement letter statement (para 1.3) and considering disclosure of actual use when work is delivered. For planning, it is more important still to explain the legal uncertainty and the risk of an HMRC challenge in writing.

Will PI cover a failed planning claim?

Usually PI responds to negligence claims, subject to the policy terms. Cover can be limited by dishonesty exclusions, specific scheme exclusions in some wordings and non-disclosure. Fines and penalties levied on the firm itself are commonly excluded.

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.