Online Mortgage Calculator Ontario

Calculate your mortgage payments in Ontario with this online mortgage calculator. Get accurate estimates for principal and interest payments, amortization schedules, and payment breakdowns.

How to Use This Calculator

Enter your mortgage details in the calculator panel to the right. The calculator will show your monthly payment, total interest paid over the loan term, and an amortization chart.

Key inputs include:

Purchase price or home value
Down payment amount or percentage
Mortgage term in years
Interest rate (fixed or variable)
Amortization period
Property taxes and home insurance estimates

Click "Calculate" to see your results. You can reset the calculator at any time using the reset button.

Formula Used

The calculator uses the standard mortgage payment formula:

Mortgage Payment Formula

M = P [i(1 + i)^n] / [(1 + i)^n - 1]

Where:

M = Monthly payment
P = Principal loan amount (Purchase price - Down payment)
i = Monthly interest rate (Annual rate / 12)
n = Number of payments (Amortization period in years × 12)

Additional costs like property taxes and home insurance are added to the monthly payment estimate.

Worked Example

Example Calculation

Purchase price: $400,000

Down payment: 20% ($80,000)

Principal: $320,000

Interest rate: 5% (0.4167% monthly)

Amortization: 25 years (300 months)

Monthly payment: $2,179.54

Total interest paid: $142,662.50

This example shows a $400,000 home with a 20% down payment and a 5% interest rate over 25 years. The monthly payment includes principal and interest.

Frequently Asked Questions

What is the difference between fixed and variable rates?

Fixed rates stay the same throughout the loan term, while variable rates change with market conditions. Fixed rates offer stability, while variable rates may offer lower initial rates.

How does amortization affect my payments?

Amortization is the process of paying off your mortgage over time. A shorter amortization period means higher monthly payments but less total interest paid. A longer period means lower monthly payments but more total interest.

What are closing costs?

Closing costs are fees paid at the end of the mortgage process, including legal fees, appraisal fees, and other expenses. These are not included in the mortgage payment calculation but should be budgeted for.