Income Tax Calculators for Canada and Ontario

This hub is for employees, investors, landlords and self-employed people in Ontario who want to know their tax before the return is due. It covers income tax, marginal rates, refunds, capital gains, dividends and HST.

The income tax calculator is the usual first step, since it combines federal and Ontario tax. The marginal tax rate calculator shows what the next dollar costs. Investors can price a sale with the capital gains tax calculator, and business owners can see the self-employed tax calculator results including CPP.

Read the Ontario income tax guide for how the two levels fit together. If you missed a deadline, the late filing penalty relief guide explains the 5% penalty and how to ask for relief.

These estimates suit planning: choosing between an RRSP contribution and a TFSA deposit, setting aside tax on side income or checking a withholding amount. They do not replace tax software or a professional when your return is complicated.

Brackets and credits come from canada.ca and ontario.ca. We refresh the 2026 rates each January and after any mid-year change.

Income Tax Calculators for Canada and Ontario on this site

• Canadian Income Tax Calculator Estimate federal and Ontario income tax for 2026.
• Tax Refund Calculator Estimate your 2026 tax refund or balance owing from your T4.
• GST / HST Calculator Add or remove GST and HST for any province or territory.
• Tax Deductions and Credits Calculator See how much RRSP, child care, tuition and donations lower your federal and Ontario tax.
• Marginal Tax Rate & Tax Brackets Calculator Find the combined federal and Ontario marginal tax rate for 2026.
• Dividend Tax Calculator Work out the Ontario tax on eligible and non-eligible dividends, with the gross-up and credits.
• Capital Gains Tax Calculator Estimate the Ontario tax on a capital gain.
• PST / QST Sales Tax Calculator Add or remove PST, RST or QST with the GST.
• Self-Employed Tax Calculator Estimate income tax and both halves of CPP on self-employed income in Ontario.

Articles and guides

• Income tax in Ontario Guide
• The best ways to contact the CRA for personal taxes Sep 17, 2026
• How to change a filed tax return and file on paper Sep 3, 2026
• What to expect if the CRA reviews or audits your return Aug 19, 2026
• What to do when a T4 slip is missing or late Aug 5, 2026
• How to check and challenge your MPAC property assessment Jul 31, 2026
• First-time buyer land transfer tax rebates in Toronto Jul 30, 2026

Every calculator lists its sources. Read how the calculators work and our editorial policy.