Taxpayers Using AI Produce Costly Filing Errors

Canadian taxpayers are increasingly using general-purpose AI like ChatGPT for tax and bookkeeping, and a 2025 Dext survey of 500 accountants found 76% saw this rise. Accountants report frequent errors—misclassified expenses (44%), incorrect claims (43%) and payroll mistakes (35%)—which cost hours to fix and could trigger fines, audits, or insolvency risks. Officials warn double-checking AI outputs against CRA guidance is essential.