About Calculon.ca — Free Ontario Financial Calculators

What Calculon.ca is

Calculon.ca is a set of 18 calculators for Ontario residents: take-home pay, HST, mortgage and affordability, land transfer tax, CPP, OAS, RRIF, RRSP vs TFSA, EI parental benefits, child benefits, child care costs, instalments, dividends vs salary, loans and mileage. Each one applies the 2026 federal and Ontario rules and explains its assumptions next to the result.

Who is behind it

Calculon.ca was founded by Salma BA. Content and calculators are published by the Calculon.ca editorial team. Calculon.ca is an independent project: it is not affiliated with, endorsed by or operated on behalf of the Canada Revenue Agency, Service Canada, CMHC or the Government of Ontario.

Editorial standards

Official sources first. Rates and thresholds come from government and regulator publications listed on the Methodology & Sources page, with the date they were last verified (2026-10-08).
One source of truth. All calculators read the same configuration and the same calculation engines, which are covered by automated tests.
Assumptions are visible. Where a result is a simplification (for example the Guaranteed Income Supplement), the Methodology page says so.
Corrections are public. When we find an error we fix it and record it in the corrections log on the Methodology page. To report a mistake, use the contact form.

Independence and funding

The calculators are free and need no account. Calculon.ca does not currently display advertising. If advertising is added in the future, it will be clearly separated from content, it will never change calculator results, and the Privacy Policy will be updated first.

Important

Our tools provide estimates for general information only. They are not tax, legal or financial advice and do not replace a CPA, a certified financial planner or the CRA. Every situation is different.