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Free Québec business calculators
Quick, free tools for the numbers Québec owners run most often — no sign-up, no email. Bookmark this page.
The calculators
- GST/QST calculator — add the sales tax to a price, or back it out of a total.
- Vacation pay calculator — work out the 4% or 6% owed on earnings.
- Salary vs. dividends calculator — compare the two ways to pay yourself from your corporation.
- Self-employed tax calculator — estimate income tax and QPP, and what to set aside.
- Donation-receipt eligible-amount calculator — for charities issuing receipts with an advantage.
- Construction holdback & GST/QST timing helper — see how much tax is deferred.
Going deeper than a calculator
A calculator answers one number; running a business raises a hundred. If you want the full picture, start with your industry:
- Contractor bookkeeping — every guide, or take the 2-minute compliance quiz.
- Non-profit & charity bookkeeping — every guide, or take the 2-minute filings quiz.
- All our guides on GST/QST, payroll and Québec tax.
Prefer to hand it off? Book a free 20-minute call. These tools give general estimates, not advice for your specific situation.
FAQ
Are these calculators free?
Yes — all four are free to use with no sign-up and no email required.
Are the results official?
They’re general estimates to help you plan, not official calculations or advice. For your actual filings, confirm with us or your advisor.