Contact

Email is the only channel. It reaches Paulo Araujo, who maintains the site, and there is nobody else in between.

Reporting an error in a figure

This is the message most worth sending, and it is taken seriously. Use the correction address and include, if you can:

• The page it appears on, or its address.
• The figure you believe is wrong, and what it should be.
• The authority that says so: the Canada Revenue Agency, Revenu Québec, Retraite Québec, Employment and Social Development Canada, or a provincial finance department. A link to the specific document is ideal.

A correction with a source attached is checked against that source. If the site is wrong, the underlying data is corrected, the date on which a person verified it is updated, and every page built from that figure changes with it, because the pages read the data rather than repeating it. If the site turns out to be right, you get an explanation of why rather than silence.

Reports without a source are still read, but they take longer, because the first step is finding the authority the reporter did not name. There is no promised turnaround here and inventing one would be dishonest. What is promised is that a sourced correction is acted on rather than filed.

Questions about the calculation

If a number here does not match your pay statement, read understanding your Canadian paycheque first: the three usual causes are the credits you claimed on your TD1, the difference between annual and per-period arithmetic, and workplace deductions this site does not model. The methodology page lists every assumption in force.

If that does not resolve it, send the question. Include the salary, the province and the figure you expected, because a question with numbers in it can be reproduced and a question without them cannot.

What cannot be answered here

• Personal tax advice. Nobody here is a licensed accountant or tax adviser, and questions about your own return, your deductions or your circumstances need someone who can see them. The Canada Revenue Agency and Revenu Québec both run individual enquiry lines, and a professional adviser is the right route for anything consequential.
• Investment or financial advice. Out of scope entirely.
• Requests to look up your account. This site holds no accounts, no user records and no salary data. Nothing you type into a calculator here is ever transmitted, as the privacy page explains.

Other reasons to write

• A jurisdiction or tax year you would like covered. The architecture treats a tax year as a data module, so adding one is transcription work rather than a rewrite.
• An accessibility problem. Something that does not work with a keyboard or a screen reader is a defect, and it will be treated as one.
• Anything else.

Tax data last verified 2026-08-18