How our answers work
The rules have sources, the math is tested, and the AI explains but never invents a number.
Tax answers are only useful if you can trust them. This is how we keep ours honest, and where the limits are.
Three jobs, kept apart
The rules. Every tax rate, bracket, threshold and deadline lives in one rules file for each tax year. Each number carries the Canada Revenue Agency or Department of Finance page it came from and the date we last checked that page. When a rule changes mid-year, as BC, Newfoundland and Labrador and PEI rules did in 2026, the file is updated and the old year is kept, so a 2025 question still gets 2025 rules.
The math. Calculators work out the numbers from the rules file. They are tested before every update against hand-worked cases, CRA’s own published examples, and a second, independent calculation. If a single number moves when it should not, the update does not go live.
The explanation. Our AI assistant reads your question, explains the rules in plain English, and points to the source. It is not allowed to invent tax numbers: when there is something to calculate, it uses a calculator, and shows you the result.
What every answer tells you
- Which tax year and province the answer is for.
- What it assumed, and what it left out.
- The CRA or government page it relies on, and when we last checked it.
Who Checks the Paid Reports
Straight answer: software, not a person. I would rather tell you that here than have you find out later. This is who does each part of a paid report:
| Part of the report | Who does it |
|---|---|
| Reading your return, slips and letters | AI, and the report shows you what it read so you can check it |
| Arithmetic, slip totals, limits and dollar amounts | Our calculator (same input, same answer, every time) |
| Deadlines, such as the last day to object | Our deadline calculator |
| Explaining what a finding means and what to do | AI, held to the rules and sources in our rules file |
| A second look at every AI finding | A second AI review that throws out anything the data does not back up |
| Review by an accountant | None. If you need that, hire one; the report tells you when it is worth it |
Proof, Not Promises
Anybody can say their software is accurate. So we show our work: sample reports, exactly as the software lays them out, and how we test, with the latest results, including the ones that did not pass.
Where the limits are
We cover the situations most people actually face: employment and self-employment income, GST/HST registration, selling property, capital gains, RRSPs and CRA letters. Quebec returns, trusts, corporate reorganizations and cross-border cases are outside what we answer. When a situation needs a professional, we say so plainly.
CanadianTaxes.ai is an independent information service. It is not the Canada Revenue Agency, and it is not a law or accounting firm. Our answers are general information, not advice for your specific situation. CRA decides every return and every claim.
Found a mistake?
Tell us through the contact page. We check every report against the source and correct the rules file when we are wrong, with the date of the correction.