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Technology · Professional responsibility

If the AI makes a mistake, who is responsible? The CPA, same as today.

It’s the first question we get, and it’s the right one. The answer fits in one line: nothing changes. ClicBook signs nothing. It prepares, flags anomalies and asks questions. The professional validates every file, and their signature carries their responsibility exactly as before.

By Khalid Lahmouz, CPA, MBA7 min read

01 · The question“What if the AI gets it wrong?” It will.

An AI that reads slips, categorizes transactions and prepares returns will make mistakes. A number misread on a blurry photo, an expense posted to the wrong account, a slip confused with last year’s. Pretending otherwise would be the first mistake.

But your technician makes mistakes too, your intern even more, and so do you at 11 p.m. on April 28. The profession has never relied on the absence of errors. It relies on a professional who reviews, asks the right questions and signs only when satisfied.

So the real question isn’t “can the AI be wrong?” It’s “who catches the error before it leaves the firm?” The answer is the same as today.

0

documents signed or filed by ClicBook without a professional’s approval

1

person responsible per file: the CPA who validates it

100%

of AI actions recorded in the file log

ClicBook prepares. The CPA decides. Their signature carries their responsibility, as before.

02 · What doesn’t changeResponsibility can’t be delegated. Not to an employee, not to software.

No tool changes the professional’s obligations. The framework is the same whether the preparation comes from a technician, a spreadsheet or an AI.

01

The code of ethics

A CPA answers for their own work and for work done under their supervision. They must practise with competence and integrity, and cannot escape responsibility by blaming a collaborator’s error. A tool is just one more collaborator.

02

Signing and filing

For an income tax return, the client authorizes electronic filing (T183, TP-1000.TE) and the firm files it. That step stays human: ClicBook prepares a return ready for review; it doesn’t file it on its own.

03

Engagement standards

For a compilation engagement (CSRS 4200), the practitioner must understand the entity, inquire about unusual items and read the statements before releasing them. AI can prepare the ground; judgment and the report stay with the practitioner.

04

Practice inspection

When the inspector opens a file, it’s your file, your documentation and your judgment under review. The tool must leave you a clear record of what was checked, and by whom.

03 · Its roleThree verbs for ClicBook. One for the CPA: validate.

ClicBook is built to do the work that comes before professional judgment, never the work that replaces it.

What ClicBook does

  1. Prepare

    Read slips and statements, propose amounts, categorize transactions, enter a return ready for review.

  2. Flag

    Changes from last year, missing slips, unusual amounts, data that doesn’t match CRA or Revenu Québec records.

  3. Ask

    Draft questions to the client about what’s missing or surprising, so the CPA only has to approve them.

What it never does

  • Sign a report, a return or a letter
  • File a return without the professional’s approval
  • Settle a discrepancy or a judgment call on its own
  • Send the client an out-of-the-ordinary message without review
  • Hide uncertainty: an unsure amount is flagged, not guessed

04 · The checkpointsOne file, five stages. Nothing gets past the CPA.

Here is the path of a personal tax return in ClicBook. Pick a stage to see what the AI does, and where the professional takes over.

ClicBook

Reads every uploaded document, files it under the right year and spots duplicates and unreadable photos.

The CPA

Can refile or reject a document in one click; everything is reversible and logged.

Three points of no return, three human validations. The AI speeds up everything in between; it crosses none of those lines alone.

05 · Designed by a CPABuilt from the signer’s chair, not the programmer’s.

ClicBook was designed by a CPA who signs files every season. That starting point changes the priorities. A programmer asks what the AI can automate; a CPA asks what they’ll have to explain to the inspector, the client or the insurer if something goes wrong.

Hence three design choices. Every amount stays linked to the document it came from, so it can be checked at a glance. Every AI action and every human validation is written to the file log, with the date and the author. And the AI is tuned to flag rather than guess: when it’s unsure, it says so.

The result isn’t a firm where AI decides. It’s a firm where the CPA spends less time typing and more time doing what they trained for: reviewing, questioning and advising.

Excerpt from a file log

  1. 09:12ClicBookProposes $48,312.00 in box 14 of T4 (employer A). High confidence.
  2. 09:12ClicBookFlags: employment income up 31% from 2025.
  3. 09:40CPAValidates the amount. Note: promotion confirmed by client.
  4. 09:41ClicBookProposes $1,250.00 in medical expenses. Low confidence: receipt partly unreadable.
  5. 09:44CPACorrects to $1,520.00 from the original receipt.
  6. 10:05CPAApproves the return and files it.

Illustrative example

06 · Your turnBefore adopting an AI tool, 8 questions to ask.

Whether you choose ClicBook or another tool, these questions apply. Check the ones your vendor answers clearly. Nothing is saved or sent.

Professional control

0 out of 8 clear answers

0 %

Frequently Asked Questions

If ClicBook proposes a wrong amount and I validate it, who is responsible?+

The professional who validated it, just as if a technician had prepared the amount. That’s why ClicBook links every amount to its source and flags the ones it’s unsure of: so validation is fast, but real.

Does my professional liability insurance cover work prepared with AI?+

Your insurance covers your professional services, whatever tools are used to prepare them. Terms vary by insurer: ask yours in writing, and keep a record of your review procedures.

Can the AI file a return overnight, once the file is ready?+

No. Preparation can happen overnight; filing waits for the professional’s explicit approval. That’s a design choice, not a technical limit.

Should I tell my clients that AI prepares their file?+

We recommend it, in your privacy policy and engagement letter. Under Quebec’s Law 25, transparency is the rule, and if a decision affecting the client were made exclusively by automated processing, informing them would be mandatory. With a CPA validating every file, that isn’t the case.

Read next: an AI employee in an accounting firm, what it does and what it doesn’t

SourcesOfficial References & Further Reading

This article describes how ClicBook divides roles between the AI and the professional; it is not legal, ethics or insurance advice. The file log is an illustrative example. For a specific situation, refer to official texts, the Ordre des CPA du Québec and your insurer. Sources last verified: November 13, 2026.

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