In tax season, the shortage is hours. A client emails nine PDFs and a phone photo of a receipt, and before anyone prepares anything, someone has to work out what's there.
That sorting is the best first job for AI in a firm that does personal tax. The AI drafts an intake list: which slips arrived, what's missing and what to ask the client, with every line linked to the page it came from. The preparer and the reviewer still make every tax call.
If your bottleneck is elsewhere, say review notes piling up on one partner, start there instead. For most firms with a T1 practice, though, intake is where March and April go.
One T1 intake, illustrated
Every receipt the client sent stays on the received list, including the one that might be a duplicate. The question about it sits underneath, so nothing disappears between the two lists.
Notice what the list leaves alone. It doesn't decide whether the physiotherapy qualifies as a medical expense, which spouse should claim the medical receipts, or how the donation is treated. Those are the preparer's and reviewer's calls. And if the AI makes something up, such as a slip that isn't in the batch, the page link gives it away, because there's no page to open.
Who gains in tax season
The preparer starts from a list instead of a pile. The senior fields fewer "did she send her T5s?" questions. The reviewer or partner can see what was chased and what the client answered without scrolling back through a month of email, which matters most in April, when they're signing off on a stack of returns and need to trust that a missing slip was asked for.
How much time this saves depends on your files. Clean, downloaded PDFs go quickly. Blurry photos and bundled bank statements take more checking. Time it before you decide.
What your CPA body expects
The provincial guidance we checked doesn't add AI-specific rules. It applies the existing Code of Professional Conduct to AI. CPA Ontario's case study on CPAs and artificial intelligence says the Code obligations that govern any software also govern AI, and the CPA remains responsible for the accuracy of what the tool produces.
BC's guidance goes further into practice. CPABC's review of its Code and AI tools asks members to review AI results before relying on them and to learn how a tool stores what they type. It suggests recording the tool and version, what you asked, what came back and the judgment you applied. It also encourages keeping confidential client information out of AI prompts, even after checking a tool's privacy practices.
That last point shapes the trial. Start with invented files. Before a real client document goes in, the firm decides on the product and plan, where data is stored and who has access. Read your own provincial body's guidance as well, wherever you practise. Our free client confidentiality checklist walks through those questions with your privacy or IT lead.
A trial before tax season
Pick one return type with plenty of similar files, such as returning clients with employment and investment income. Build twenty invented intake batches with the traps that cost you time: a missing slip, a duplicate receipt, a donation receipt with no registration number. Run them. Then time the whole path, from sorting to the reviewer's sign-off, counting every file sent back to the preparer. A faster first draft is a bad trade if the reviewer spends longer finding its mistakes.
We set this up in Claude, ChatGPT or Copilot and coach the people who will run it, so we're not a neutral judge of our own work. Whoever you hire, including us, should show the intake list working on your invented batches before anyone touches a real file.
Solo is our CAD 1,800 setup and coaching for one person: a sole practitioner, or the preparer who handles most intake. Fractional AI Leadership is Sidekick leading AI adoption across a team, from CAD 6,000 a month with a 90-day commitment, for when intake, preparation and review all change together. If you're not sure intake is the place to start, the free AI Opportunity Map ranks where AI could help first.
For the call, bring one file type and the reason it gets sent back. No client documents needed.
Sources checked October 16, 2026. CPA Ontario case study published November 18, 2024. CPABC guidance published June 30, 2025.