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.
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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.
You said you already have this covered. Skim this step, or skip to the next.
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.
- Article AI is now a Code obligation for every tax practitioner
- Article Why your firm now needs an AI policy (even if you don’t use AI)
Learning check
What would you do? Pick one; every answer is explained.
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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.
You said you already have this covered. Skim this step, or skip to the next.
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.
- Article Is AI safe for client data? The accountant’s straight answer
- Article Where confidentiality lands under the guidance
Learning check
What would you do? Pick one; every answer is explained.
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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.
You said you already have this covered. Skim this step, or skip to the next.
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.
- Article The AI clause every Australian engagement letter needs
- Article Client consent for AI: what to tell clients, and the letter to send
Learning check
What would you do? Pick one; every answer is explained.
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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.
You said you already have this covered. Skim this step, or skip to the next.
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.
- Article What Anthropic’s AI watermark means for tax practitioners
- Article Where competency lands under the guidance
Learning check
What would you do? Pick one; every answer is explained.
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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.
You said you already have this covered. Skim this step, or skip to the next.
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.
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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.
You said you already have this covered. Skim this step, or skip to the next.
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.
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AI policy template
Tools register, data rules, the review rule and sign-off. Editable .docx.
Get the templateFrequently 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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