Free calculators
Tax Calculators for Ontario Business Owners
Free calculators using 2026 federal and Ontario rates: corporate tax, whether to incorporate, and HST. Nothing you type leaves your browser.
Brampton · Mississauga · GTA · Virtual support across Ontario
Three free calculators for Ontario business owners, using 2026 federal and Ontario rates. Each one shows how it got its answer and runs entirely in your browser. Nothing you type is sent or saved.
- Ontario corporate taxSmall business and general rates for 2026, including the 1 July cut to 2.2% and the passive income rule.
- Should I incorporate?Sole proprietor or corporation: what you keep this year at your profit and the salary you need.
- HST calculatorAdd 13% HST to a price, or take it out of a total. Other provinces included.
Before you rely on a number
Each calculator is a quick estimate. Your real tax depends on your year-end, your other income, associated companies and the choices you make about pay. If a number surprises you, book a free 15-minute call and we will look at it with you. Fees for any work are agreed in writing before anything starts.
More reading: guides for Ontario business owners and Ontario business tax dates.
General information using 2026 federal and Ontario rates. It is not tax advice for your situation. Wealthy Wave Accounting agrees the scope and fees for any work in writing before it starts.
How it works
Working with us, step by step.
Exactly what happens after you get in touch, starting with one 15-minute call.
- Today
Book 15 minutes
A free, no-obligation 15-minute call on Teams or at our office at 181 Queen St E, Brampton.
- The call
Tell us about your business
Your industry, how you are paid and what is due next.
- Before work starts
Scope and fees agreed
We agree the work and fees in writing before anything starts.
- All year
One calendar, no surprises
Books, payroll, HST and your T2 on one schedule.
- Your move
Ready when you are
Pick a 15-minute slot that suits you. We confirm the time and scope with you directly.
A PRACTICAL NEXT STEP
Talk to us before
the deadline.
Share the service you need, your business type and any upcoming deadline. We’ll discuss the records, scope and next steps before work begins.