Canadian Tax Calculator FAQ

It uses the official 2026 federal and provincial tax rates and credits, so it gives a reliable estimate for most common situations. Your final result can differ once every slip, receipt, and detail is reviewed, which is what we do when we file for you.

No. The calculator runs entirely in your browser, and nothing you type into it is saved or sent anywhere. Only information you choose to submit through our contact form reaches us.

For most people it’s April 30, 2027. If you or your spouse is self-employed, the filing deadline is June 15, 2027, but any balance owing is still due by April 30, 2027 to avoid interest.

Your slips (T4, T4A, T5, T3, T4E, T2202 and others), RRSP and FHSA contribution receipts, receipts for medical expenses, donations, and child care, rent or property tax amounts if you live in Ontario, and last year’s notice of assessment if you have it. If you’re self-employed, bring a summary of your income and business expenses.

Benefits like the Canada Child Benefit, the Canada Groceries and Essentials Benefit, and the Ontario Trillium Benefit are paid separately, usually monthly or quarterly, starting in July after you file. They aren’t part of your tax refund, but filing on time is how you keep getting them.

Yes. We can file past years’ returns and help you get caught up, including any refunds or benefits you may have missed.

Yes. We can review CRA letters, reviews, and reassessments, explain what they mean, and help you respond.

Yes. Along with personal returns, we handle corporate (T2), trust (T3), and GST/HST returns, as well as bookkeeping. Get in touch and tell us what you need.

Yes, for the basics. It includes dividends from connected companies, Part IV tax, and refundable tax pools. Complex structures should be reviewed with us.

Rates change mid-year, and companies have different year-ends. For example, Ontario’s small business rate dropped from 3.2% to 2.2% on July 1, 2026, so the blended rate depends on your year-end. We pre-fill the standard rate, and you can adjust it.

Call (647) 615-7573 or fill out the form on our Get in Touch page, and we’ll reach out to discuss your situation.