Contact
calc-hq.ca is an independent, one-person project that builds and maintains Canadian payroll, tax and benefit calculators. We don't offer tax advice or handle individual return questions — for those, the CRA, Revenu Québec and Service Canada are the right places to go.
If a number looks wrong
The most useful email this site receives is about three lines long: which page, which figure, and which government page says something different. That is enough to re-check a constant against its source in minutes; if the source has moved, the fix is one line in the file every calculator reads from. Send it to partnerships@calc-hq.ca with as much of the following as you have:
- The page — the URL, or the calculator's name and the province you had selected.
- The input — the salary, income or price you entered, rounded is fine.
- The two numbers — what the page showed and what you expected.
- Where the expectation came from — a CRA or provincial page, a T4032 table, a pay stub, another calculator. A link beats a description.
Here is what happens next. The constant behind the figure is re-read on the page it was stamped from. If that page has changed, the value and its date are updated in one place, the old value is recorded as superseded, and a check then lists every page on the site still quoting it, so they're corrected together rather than one at a time as people notice. If the site turns out to be right and the other source is stale — a bank article still carrying last year's TFSA limit is the usual case — the reply says which government page holds the current figure, so you can settle it yourself.
What not to send
No SIN, no T4, no notice of assessment, no account numbers. There is no form anywhere on this site and nothing typed into a calculator leaves your browser, which makes email the only channel that could ever carry your personal details — so keep an example to round numbers and leave the documents out. A screenshot of a result is fine; one of a pay stub isn't needed.
Questions about your own situation — how much you personally owe, whether a credit applies to you, what to do about a reassessment — can't be answered here, and not as a matter of policy: one person without your return in front of them has no basis for an answer, and a wrong one would cost you more than no reply. The CRA's individual enquiries line, Revenu Québec for a Quebec return, and Service Canada for CPP, EI and OAS are the places that can see your file. This site can tell you how the rule works; it can't tell you how it lands on you.
Sponsorship and advertising
The same address handles enquiries about sponsorship or placement. Say which section you have in mind and what you're proposing. One boundary is fixed in advance: nothing that would change a rate, a figure or a result to suit a sponsor is on the table, and the checks that run on every change wouldn't let it through in any case.
What you'll hear back
Replies come from one person in Ontario rather than a queue, so allow a few days. A correction that checks out is acknowledged when it ships, with the page that changed. Data and cookies are covered on the privacy policy page, and where the figures come from on the FAQ; neither needs an email.