How it works

What the calculator does, and what it does not.

Every result is calculated in your browser from your inputs and a dated set of rules. It is a planning starting point, not an approval, quote, or forecast.

Instant recalculation Editable assumptions Clear boundaries
Automatic

The result on screen

When you change an input, the formulas immediately recalculate the result in your browser.

Embedded in the site

The formulas and rules

Tax brackets, thresholds, and planning guides are embedded in code with a manual review date.

Not live

No lender or regulator connection

The site does not request a live rate, approval, or rule from a lender, government, or listing service.

Calculation methods

What happens behind each tool.

Each explanation pairs the calculation logic with the boundary you should keep in mind.

01

Mortgage payments

We convert the Canadian nominal rate compounded semi-annually to an effective monthly rate, then apply a level-payment annuity formula.

The payment is an estimate. Your lender provides the actual rate, schedule, and fees.
02

Renewal and amortization

Comparisons start with the balance at the beginning of the new term. Schedules simulate each payment and apply extra payments directly to principal.

Prepayment privileges and switching costs depend on the mortgage contract.
03

Affordability and comfort

The estimated lender limit uses the greater of 5.25% or the contract rate plus 2 points, with guides of 39% for housing costs and 44% for all debt. The comfortable range uses 32% and 40%.

The comfortable range is a planning guide, not a lending rule or approval.
04

Down payment and insurance

The embedded minimum is 5% of the first $500,000, then 10% up to a price below $1.5 million. At $1.5 million and above, the tool requires 20%. Insurance premiums are added to the loan.

Insurance eligibility and applicable sales tax still need confirmation.
05

Closing costs and regional transfer fees

After you choose a province or territory, the tools apply that region’s published transfer tax, deed duty, or land-title registration schedule. Toronto and Nova Scotia expose the relevant municipal inputs.

Buyer relief depends on eligibility, and some municipalities use different rates. Service allowances are not quotes.
06

Selling and buying next

Net proceeds start with the sale price you enter, then deduct the mortgage, penalty, percentage or fixed brokerage quote, tax, and moving costs. You choose the low/high sale-price range.

The tool does not provide a property valuation or replace local comparable sales.
07

Rent versus buy

The comparison projects costs from the rent, purchase price, financing, maintenance, growth, selling costs, and the alternative return on the down payment you enter.

It compares scenarios. It does not forecast rents, home prices, or investment returns.
Data freshness

What the dates actually mean.

A date records the latest review or embedded release. It does not promise continuous monitoring.

Calculator rulesAugust 10, 2026Last manually reviewed
Market dataJune 2026Embedded observation. Sources retrieved July 28, 2026
Policy rateJuly 15, 2026Embedded Bank of Canada observation

Updates are not automatic. The site does not currently monitor policy changes or refresh market figures live. An official source may publish a newer rule or period before this page is revised. Always check the source before making a commitment.

Use the result for planning

  • Compare scenarios using the same assumptions
  • Estimate a payment, budget, or cash requirement
  • See which inputs change the decision most
  • Prepare better questions for a professional

Confirm before acting

  • Approval, rate, penalty, and terms with the lender
  • Taxes, rebates, and eligibility with a professional
  • Legal, inspection, insurance, and moving quotes
  • Value and recent comparables with a local source
Primary sources

Check the rule behind the result.

See all sources