Mortgage math for Ontario, done properly

Free calculators for buying, renewing and breaking a mortgage in Canada. Every rate comes from the government page that sets it, and every page shows its formula.

See all calculators · Renewing in 2026?

Calculators

Ontario land transfer tax

Provincial tax, Toronto MLTT with the April 2026 luxury rates, and first-time buyer refunds.

Renew or switch

Compare your renewal offer with another lender, after switching costs. Includes a straight-switch check.

Prepayment penalty

Three months' interest vs the IRD, with both ways lenders work out the comparison rate.

Stress test and qualifying

Your qualifying rate, GDS and TDS against the 39% and 44% limits, and the largest mortgage that fits.

CMHC insurance

Premium by down payment, the 30-year surcharge, the $1.5M cap and the 8% Ontario tax at closing.

Ontario closing costs

Taxes worked out for you, plus your own quotes for lawyer, title insurance and inspection.

Mortgage payment

Canadian semi-annual compounding, accelerated payments and a full amortization table.

Renewing this year?

If your term ends in 2026, you have more options than your renewal letter suggests. Most borrowers who move to a new lender at renewal no longer have to pass the stress test, as long as they keep the same amortization and loan amount. Our 2026 renewal guide covers when to start shopping, what switching costs, and what to do if you want out before the term ends.

Comparing offers?

A lower rate doesn't always mean a cheaper mortgage. Our guide on how to compare mortgage rates covers posted vs discounted rates, the APR on your disclosure statement, penalty methods and portability, with a worked example.

Why use this site

About the name: the domain is older than this site. We don't publish lender rate tables. We give you the math to compare the rates you're offered.

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