About Calculon.ca

Our Mission

Calculon.ca was created with one clear goal: make Ontario tax and personal finance accessible to everyone. Too many Ontarians make major financial decisions — buying a home, planning retirement, choosing between RRSP and TFSA — without access to reliable, free calculation tools. Calculon fills that gap with 18 professional-grade calculators, all based on official 2026 data from the Canada Revenue Agency (CRA), the Ontario Ministry of Finance, CMHC, and Service Canada.

Our Team

Calculon.ca was founded by Salma BA with a simple mission: democratize access to Ontario tax calculations. Every calculator is verified against official rate schedules and updated with each regulatory change.

Our Methodology

Each calculator is built from formulas, rate schedules and thresholds officially published by:

• Canada Revenue Agency (CRA) — Federal tax brackets, CPP/EI contributions, RRSP/TFSA limits, CCB, mileage rates
• Ontario Ministry of Finance — Ontario income tax, Ontario Health Premium, Ontario surtax, Land Transfer Tax, Ontario Child Benefit
• CMHC / SCHL — Mortgage insurance premiums, down-payment rules
• OSFI — B-20 mortgage stress test
• Service Canada — OAS, GIS, EI maternity and parental benefits

Update Policy

Calculators are updated every January with new fiscal year rates, and after any major federal or Ontario budget announcement. All figures currently reflect fiscal year 2026 official data.

Our Values

• Accuracy: Every formula is cross-checked against official CRA and Ontario government publications.
• Transparency: We document the formulas and assumptions used in each calculator on our Methodology page.
• Accessibility: All tools are free, require no registration, and work on mobile and desktop.
• Privacy: No financial data is transmitted to our servers. All calculations run locally in your browser.

Contact Us

For questions, bug reports or improvement suggestions, use our contact form. We typically respond within 48 business hours.