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Canadian tax guides: how it works and how to file

Updated Checked by the Tax-Services.ca editorial team How we check

These guides explain how Canadian taxes work, one topic at a time: how income tax is worked out, how to file a return, how sales tax is split between Ottawa and the provinces, self-employment, and accounts like the RRSP, TFSA and FHSA. Each uses 2026 figures and names the official source behind its numbers.

Not sure where to begin? Read the guide to how Canadian income tax works first. The gap between your marginal rate and your average rate comes up in nearly every other guide. Close to the deadline? Go straight to the filing guide. Working for yourself, or thinking about it? There is a guide for the day nobody withholds your tax any more.

Every guide links on to the calculators and articles behind it, so you can read how a rule works and then try it on your own numbers. Nothing you type leaves your browser, and there is nothing to sign up for. Each guide covers the rule, the forms and dates that go with it, and what to ask if your own case is a bit unusual. We don’t prepare or file returns here. This is a place to understand your taxes, not to hand them over.

Which articles do people read most?

Which Canadian tax guides are there?

Nobody needs to read all of these. Every guide points to the next step, so you can stop once your question is answered. Most people read two or three, and some only need a paragraph.

Which guide should you read first?

The one that matches what is sitting on your desk. Got a T4 and no idea what to do with it? Start with the filing guide. Just landed from abroad? The new to Canada page covers the first-year surprises. Living on a modest income and wondering what you might be owed? The benefits and credits guide covers payments like the GST/HST credit, which became the Canada Groceries and Essentials Benefit in July 2026.

If none of those fits, read the income tax guide. The other guides lean on it, and its ideas, like brackets and credits, come back in each of them.

Where do I find a tax limit or a filing date?

The limits and rates page has the figures people look up most, like this year’s RRSP limit and the federal brackets, with the source printed next to each. The tax calendar has the dates. For most people, filing and paying are both due April 30. If you or your spouse is self-employed, the filing date is June 15, but any tax owing is still due April 30, as the CRA’s due dates page sets out.

If you would rather start from what is happening to you, the life events pages cover a new job, a baby or a move, and the checklists print on one sheet. When a word stops you mid-sentence, the glossary explains it in a line or two.

Prefer to work it out rather than read about it? The calculators are 118 free tools in 12 topic hubs, covering pay, income tax, sales tax, mortgages and savings for every province.

Who publishes these guides, and can you rely on them?

We’re an independent publisher. We don’t prepare or file tax returns, and we can’t advise on your own situation because we’ve never seen it. The figures come from the CRA, Revenu Québec and provincial pages, and the how we check rates page describes the routine. Where a page here and an official source differ, the official source is the reference.

Tax rules change and rates get indexed, so a page that was right in January can be a little off by autumn. That is why every page shows the date it was last checked and the source behind each figure.

The editorial team page explains who writes and checks all of this.

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Frequently asked questions

Are these guides tax advice?

No. The guides are general information about how Canadian tax rules work. They cannot account for your own situation, and the notice of assessment the CRA sends after you file is what settles what you owe. For advice on your own file, ask a qualified preparer or the CRA.

Where do the figures in the guides come from?

From the CRA, Revenu Québec and provincial government pages. Each calculator and the limits page list the source and the date we last checked it. If a page here ever differs from an official source, the official source is the reference.

How often are the tax guides updated?

The date on each page shows when it was last checked. Rates and limits are reviewed again every January, with a second review in July for benefits and mid-year changes, as the how we check rates page describes.

Do you offer tax services?

No. We don't prepare or file returns, and we don't offer tax, legal or accounting services. The guide on choosing a preparer explains what to ask the people who do.

Which guide should I read first if I am new to Canadian taxes?

Start with the guide to how Canadian income tax works, since brackets, credits and the marginal rate come up in every other guide. If a filing deadline is close, go straight to the guide on how to file your tax return.

Do I need to sign up to use the calculators?

No. Nothing you type into a calculator leaves your browser, and nothing needs signing up for. The calculators page lists every tool by topic, from pay and income tax to mortgages and savings.

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