Ontario Mtg Calculator

This Ontario MTG Calculator helps you estimate your monthly mortgage payments, total interest paid, and amortization schedule for home loans in Ontario. Simply enter your loan details and get instant results.

How to Use This Calculator

Using the Ontario MTG Calculator is simple:

Enter the principal amount (the total loan amount you're borrowing)
Select your amortization period (how long you'll pay back the loan)
Enter your interest rate (the annual percentage rate)
Click Calculate to see your monthly payment and other details

The calculator will show you your estimated monthly payment, total interest paid over the life of the loan, and a breakdown of how much principal and interest you'll pay each year.

Formula Used

The calculator uses the standard mortgage payment formula:

Mortgage Payment Formula

Monthly Payment = P × (r(1 + r)^n) / ((1 + r)^n - 1)

Where:

P = Principal loan amount
r = Monthly interest rate (annual rate ÷ 12 ÷ 100)
n = Number of payments (amortization period × 12)

This formula calculates the fixed monthly payment required to fully amortize the loan over the selected term.

Worked Example

Let's calculate a mortgage payment for a $300,000 loan with a 5-year term and 5% annual interest rate.

Example Calculation

Principal (P) = $300,000

Annual Interest Rate = 5%

Monthly Interest Rate (r) = 5% ÷ 12 ÷ 100 = 0.004167

Amortization Period = 5 years = 60 months

Monthly Payment = $300,000 × (0.004167(1 + 0.004167)^60) / ((1 + 0.004167)^60 - 1)

Monthly Payment ≈ $5,500.00

This example shows that with a $300,000 loan at 5% interest over 5 years, your monthly payment would be approximately $5,500.

FAQ

What is the difference between fixed and variable rate mortgages?

Fixed-rate mortgages have the same interest rate for the entire loan term, while variable-rate mortgages adjust periodically based on market rates. Fixed rates typically offer more stability, while variable rates may offer lower initial rates.

How does the amortization period affect my payments?

A longer amortization period means lower monthly payments but more total interest paid over the life of the loan. A shorter term results in higher monthly payments but less total interest paid.

What is the difference between principal and interest payments?

Principal payments reduce the amount you owe on the loan, while interest payments cover the cost of borrowing the money. Early in the loan term, most of your payment goes toward interest, while later payments focus more on principal.