Mortgage Calculator Canada Ontario

Reviewed by: David Chen, CFA | Canadian Mortgage Specialist
Last Updated: October 2025

Calculate your monthly payments with our precise mortgage calculator canada ontario. This tool features specific Ontario settings, including mandatory CMHC insurance calculations for high-ratio loans (less than 20% down) and support for accelerated bi-weekly payments.

Ontario Mortgage Calculator

Average Ontario home price is ~$850k.
Min 5% for first $500k, 10% for remainder.
Canadian mortgages use semi-annual compounding.
Accelerated options pay off loan faster.
Estimated Payment
$0.00
Includes CMHC Insurance if applicable
Note: CMHC Mortgage Insurance has been added to your loan because your down payment is less than 20%.

mortgage calculator canada ontario Formula

Canadian fixed-rate mortgages compound interest semi-annually, not monthly like in the US. This calculator uses the correct Canadian formula for precise accuracy.

Effective Rate = (1 + Rate/2)^(2/12) – 1
Payment = P [ i(1 + i)^n ] / [ (1 + i)^n – 1 ]
Source: CMHC (Canada Mortgage and Housing Corporation)

Variables

  • P: Total Loan Amount (Price – Down Payment + CMHC Insurance).
  • i: Effective Monthly Interest Rate (derived from semi-annual compounding).
  • n: Total number of payments in the amortization period.

Related Calculators

What is the Ontario Mortgage Calculator?

The mortgage calculator canada ontario is tailored for the Ontario market. It automatically calculates Mortgage Default Insurance (often called CMHC insurance) which is mandatory in Canada for down payments between 5% and 19.99%.

It also supports Accelerated Payments, a popular strategy in Canada where you pay slightly more each week or two weeks to shave years off your mortgage term.

How to Calculate Ontario Mortgages (Example)

  1. Home Price: $600,000.
  2. Down Payment: 10% ($60,000). This is a “High Ratio” mortgage.
  3. CMHC Premium: Since down payment is 10%, a 3.10% premium is added to the loan ($16,740).
  4. Total Loan: $540,000 (Base) + $16,740 (Ins) = $556,740.
  5. Payment: Calculated on the total loan amount using semi-annual compounding logic.

Frequently Asked Questions (FAQ)

What is the minimum down payment in Ontario?

5% for homes under $500k. For homes $500k-$999k, it’s 5% on the first $500k and 10% on the remainder. Homes over $1M require 20% down.

What is CMHC Insurance?

It protects the lender if you default. It is mandatory for down payments under 20% and the premium is added to your mortgage balance.

What is the Land Transfer Tax (LTT)?

Ontario charges a provincial LTT on all property purchases. If you buy in Toronto, there is an additional municipal LTT. First-time buyers may qualify for rebates.

Why use Accelerated Bi-Weekly payments?

It effectively makes one extra monthly payment per year (26 half-payments = 13 full payments), which goes directly to principal, reducing a 25-year amortization to roughly 22 years.

V}

Leave a Reply

Your email address will not be published. Required fields are marked *