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Playbook

AI and the TPB Code: what tax practitioners must do

For Australian registered tax and BAS agents whose firm uses AI. You finish with every tool mapped, client permission on file, a review record and a policy.

At a glance

  • 6 steps
  • 4 min to read
  • 2 weeks to put in place
  • 1 template included

What you’ll walk away with

  • A one-page summary of the Code duties that apply to your AI use
  • Every AI tool listed with the data it touches and where it goes
  • Client permission documented through the engagement letter or consent
  • A review record naming the reviewer for every AI-assisted piece of work
  • A signed AI policy on file, evidence you could show the TPB, and the next review booked

Learning check · before you start

What do you already have in place?

A few quick questions, so you can skip the steps you have already done. Each one has a line explaining what it means. Not sure, or never heard of it? Choose “Not yet / not sure”: that is where most firms start, and the playbook walks you through it.

  1. Do you have a one-page summary of what the TPB Code of Professional Conduct expects when your firm uses AI?

    The Tax Practitioners Board's Code of Professional Conduct already applies when you use AI. Its 2026 guidance, TPB(GS) 55/2026, points to four duties: reasonable care and competence, confidentiality, supervision and quality management. The summary gives each one a line on what it means for you.

  2. Do you have a list of every AI tool used in the firm, with the client data it touches and where that data goes?

    Count the AI features built into software you already use, such as practice management, email or meeting tools, not just chatbots. For each, note what client data it sees, where that data is stored and whether the provider can use it to train its AI.

  3. Is each client's permission for AI use documented on file?

    The Code bars sharing a client's affairs with a third party without permission, and putting their information into an AI tool can count. Permission comes through the engagement letter, a signed consent or a general authority, with a record of who agreed. Silence is not permission.

  4. Does every AI-assisted piece of client work have a review record that names the reviewer?

    A review record is a file note or sign-off on the job showing that a qualified person checked the AI's output against the source material: who reviewed it, what they checked and what they changed.

  1. Step 1: Read what TPB(GS) 55/2026 asks of you

    Done when: You have a one-page summary of the obligations that apply to your firm’s AI use.

    Your task read the Tax Practitioners Board's AI guidance, TPB(GS) 55/2026, and write a one-page summary with each of the four Code duties as a heading and one line on what it means for your firm.

    How to do it, and what to read

    On 22 July 2026 the Tax Practitioners Board issued TPB(GS) 55/2026, its final guidance on AI in tax agent services. It adds no new rules: existing Code obligations attach to AI use, and you stay accountable for anything the AI touches. Read it against four duties: competency and reasonable care (Code items 7 to 10), confidentiality (Code item 6), supervision, and quality management (sections 35 and 40 of the Determination). Write each duty at the top of a page, with one line on what it means for your firm.

    Learning check

    What would you do? Pick one; every answer is explained.

    In July 2026 the Tax Practitioners Board (TPB) issued final guidance on how registered tax and BAS agents use AI. A colleague says it means learning a whole new set of AI rules. What is the most accurate answer?
    You are writing a one-page summary of the TPB's AI guidance for your firm. Which duties from the TPB Code of Professional Conduct should it cover?
    You have read the TPB's guidance on AI once. What is the most useful thing to produce from it before you change anything in the firm?
  1. Step 2: Map every AI tool in the firm

    Done when: Every AI tool in the firm is listed with the data it touches and where that data goes.

    Your task list every AI feature your firm uses, including those built into your practice management software, file storage, email and meeting tools, and any chatbots staff use on the side, with what each does and what happens to the client data it touches.

    How to do it, and what to read

    Competency covers tools you do not know you are using. Map every AI feature in your practice management software, file storage, email and meeting tools, plus the general chatbots people use on the side. For each, record what it does, where its output comes from, what client data it touches, where that data is stored, and whether the provider can train on it. Say a staff member pastes a client’s ledger into a free chatbot: under the guidance that can be a disclosure to a third party.

    Learning check

    What would you do? Pick one; every answer is explained.

    Nobody at your firm uses a chatbot such as ChatGPT. Your practice management software, email and meeting tools have all been updated this year. Is there anything to put on a list of the firm's AI tools?
    A staff member tells you they pasted a client's general ledger into a free public chatbot to help explain some figures. How should the firm treat this?
    You are building a list of every AI tool your firm uses. Besides each tool's name, what matters most to record?
  2. Step 3: Get client permission and document it

    Done when: New letters carry the AI clause, existing clients have the explainer, and permission is on file.

    Your task add an AI clause to new engagement letters, send existing clients a plain-English explainer before their renewal, and keep a record of who agreed.

    How to do it, and what to read

    Code item 6 bars disclosing a client’s affairs to a third party without permission, and entering their information into an AI model can be one. The TPB recommends telling clients who the information goes to, where it is stored and whether AI tools may be used. Permission can come through the engagement letter, signed consent or a general authority. Add an AI clause to new letters, send existing clients a plain explainer before renewal, and record who agreed. Silence is not permission.

    Learning check

    What would you do? Pick one; every answer is explained.

    You emailed all your clients to say the firm now uses AI tools on some work. Most did not reply. Can you treat that as permission to put their information into those tools?
    You are writing a short note to clients about how your firm uses AI. According to the TPB, what should it tell them?
    Under the TPB's guidance, how can a client give permission for their information to be used with AI tools?
  3. Step 4: Set the review rule and keep the record

    Done when: Every AI-assisted piece of client work has a review record that names the reviewer.

    Your task set the rule that nothing AI-assisted goes to a client or the ATO until a qualified person has reviewed it and signed it off, and decide where each review is recorded and what the record shows.

    How to do it, and what to read

    Reasonable care means a competent person checks AI output against source material and their own expertise, and records that check. Set the rule: nothing AI-assisted goes to a client or the ATO until a qualified person has reviewed it, applied judgement and signed off. Decide where the record lives, such as a file note or a review sign-off on the job, and what it shows: who reviewed, what they checked, what they changed. If output carries an AI watermark, the answer is a clear record, not hiding the AI.

    Learning check

    What would you do? Pick one; every answer is explained.

    An AI tool drafted a client's tax return. A first-year junior glanced over it and it was lodged with the ATO. Did the firm take reasonable care?
    Your firm now requires a qualified person to review all AI-assisted work before it goes out. What should the record of each review show?
    Some AI tools add a watermark or label showing that content was AI-generated. A report for a client carries one, and a qualified person has already reviewed it. What do you do?
  4. Step 5: Write the policy into your quality management system

    Done when: The policy is signed by everyone and filed with your quality management system.

    Your task write one AI policy covering approved tools, how new tools get approved, what client data may go where, client permission, the review rule, errors and training, then file it in your firm's quality management system.

    How to do it, and what to read

    Put the answers in one AI policy: the approved and prohibited tools, how a new tool gets approved, what client data may go where, the permission process, the review rule, how errors are handled, and who has been trained. File it under your documented system of quality management, as section 40 of the Determination expects. A firm that bans AI still needs this written down, because a ban nobody checks is only an assumption. Train the team on it, collect a signature from everyone and set a review date.

    Learning check

    What would you do? Pick one; every answer is explained.

    Your firm has decided staff must not use AI tools on client work. Do you still need a written AI policy?
    Registered tax agents are expected to keep a documented system of quality management: the written processes that keep their work up to standard. You have finished your firm's AI policy. Where should it live?
    Your firm's AI policy is written and approved by the partners. What still needs to happen before it is really in force?
  5. Step 6: Check you could show it, and keep it current

    Done when: You could produce the tool map, permission and review record for any file, and the next review is booked.

    Your task pick one recent AI-assisted client file, see whether you can find the tool list, the client's permission and the review record within an hour, then fix whatever is missing.

    How to do it, and what to read

    Legislation passed by the Senate on 10 September 2026 expands the TPB’s powers, including a civil penalty for breaching the Code, interim suspension of a registration for up to 90 days, and infringement notices; check its current status on the TPB website. Then test yourself: pick one recent AI-assisted file and see whether you can produce the tool map, the client’s permission and the review record within the hour. Fix whatever is missing. Review the policy yearly, and whenever you add a tool or the TPB issues guidance.

    Learning check

    What would you do? Pick one; every answer is explained.

    Your firm has an AI policy, a list of its AI tools and a rule that a qualified person reviews AI-assisted work. How can you check you could actually show the TPB this is working?
    You read in an online forum that new laws have expanded the TPB's powers to penalise tax agents, including for breaches of the Code. How do you find out where things stand?
    Your firm's AI policy is signed and filed. How often should you review it?

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Your one-page summary

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AI policy template

Tools register, data rules, the review rule and sign-off. Editable .docx.

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Frequently asked questions

Does TPB(GS) 55/2026 create new rules for AI?

No. It confirms that existing Code of Professional Conduct obligations, including competency, reasonable care, confidentiality and record-keeping, apply when AI is used in a tax agent service, and that the practitioner stays accountable for the output.

Is putting client data into an AI tool a disclosure?

It can be, depending on how the tool is configured and used. That is why the guidance points to telling clients who their information goes to, where it is stored and whether AI may be used, and keeping a documented record of their permission.

Is this playbook legal advice?

No. It is general information. The Tax Practitioners Board’s website holds the full guidance and is the source of truth; check anything that affects your registration with the TPB or a qualified adviser.

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