As of 13 August 2026, AI can only partly check your contractor contract for UK IR35 risks.

What to actually do

1. Hand it to a person

   The route this page recommends

   Someone with a licence or accountable authority has to sign this before it counts.

2. Use a tool built for this

   Second choice

3. Do it yourself

   The distant third

   A chat interface, chat-fluent skill, and roughly 1 hour until you can act on the result.

   How to actually do it

   1. Open the contractor agreement and remove unnecessary personal data, then copy the complete text including schedules, statements of work and amendments.
   2. Write down how the engagement actually operates, including who controls the work, whether substitution has been used, who supplies equipment, how payment works, whether the contractor can work for others and how defects are corrected.
   3. Check the engager's known size and sector, and record whether a personal service company or another intermediary sits between the contractor and the client.
   4. Paste the contract, working-practice facts and arrangement details into the prompt, then ask the chatbot to produce its clause-by-clause IR35 risk review.
   5. Compare every quoted clause and factual statement with the original agreement and your records, correcting any invented or misread detail.
   6. Open the cited GOV.UK and HMRC material and check that the review reflects current guidance rather than treating one contract clause as decisive.
   7. Send the checked review, the contract and the working-practice summary to a UK solicitor or tax adviser before relying on the IR35 conclusion or making a status determination.

   Prompt

   Act as a UK contract-review assistant, not a solicitor or tax adviser. Review the contractor agreement below for potential IR35 risks under UK rules. Do not give a definitive employment-status decision and do not invent facts. Separate the analysis into: 1) clauses that may support an engagement outside IR35, 2) clauses that may indicate employment-like features, 3) clauses that are missing, vague or internally inconsistent, 4) facts about the actual working relationship that could change the analysis, and 5) questions to ask the client, contractor or engager. Pay particular attention to personal service and substitution, control over how and when work is done, mutuality of obligation, financial risk, the right to provide services to others, equipment, integration, termination, invoicing, correction of defective work and the parties' conduct in practice. Quote or identify the relevant contract wording for every point, explain why it matters, and mark each point as low, medium or high concern rather than pretending to calculate a legal probability. Distinguish contractual wording from actual working practices. Cite current GOV.UK or HMRC sources where possible, state when a point cannot be verified from the contract, and finish with a short list of issues that a UK solicitor or tax adviser should confirm before anyone relies on the review. Contract: [PASTE THE CONTRACT HERE]. Known working practices: [DESCRIBE HOW THE ENGAGEMENT ACTUALLY OPERATES]. Parties and arrangement: [ADD THE CLIENT, CONTRACTOR, INTERMEDIARY AND WHETHER THE ENGAGER IS A PUBLIC AUTHORITY, MEDIUM OR LARGE BUSINESS, OR SMALL BUSINESS IF KNOWN].

   Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.