BMO Calculator Mortgage – Easy Loan Estimation

This mortgage calculator helps you estimate your monthly payments based on loan amount, interest rate, and term.

Mortgage Calculator

How to Use the Mortgage Calculator

Enter the details of your mortgage into the respective fields. The loan amount, annual interest rate, and loan term are required fields for the mortgage calculation. Additionally, you can include estimated annual property taxes, home insurance, and monthly HOA (Homeowner Association) fees to get a more comprehensive monthly payment estimate. Once you have entered the values, click on the “Calculate” button to see your estimated monthly mortgage payment.

How It Works

The calculator uses the standard mortgage calculation formula to determine the monthly payment based on the loan amount, interest rate, and loan term. The formula used is:

M = P[r(1+r)^n/((1+r)^n)-1)], where:

  • M is the total monthly mortgage payment.
  • P is the loan amount (principal).
  • r is the monthly interest rate (annual rate divided by 12).
  • n is the number of payments (loan term in years multiplied by 12).

Additional amounts for monthly property taxes, home insurance, and HOA fees are then added to this base mortgage payment to give a total monthly payment.


The calculator provides an estimate only and does not account for other potential costs or fees that may arise during the term of the loan. It assumes the interest rate remains constant over the entire term, which may not be the case with adjustable-rate mortgages. Always consult with a financial advisor for a thorough analysis.

Use Cases for This Calculator

Calculating Monthly Mortgage Payments

Enter the loan amount, interest rate, and loan term to quickly determine the monthly mortgage payments. Easily adjust the inputs to explore different payment scenarios and plan your finances effectively.

Estimating Total Interest Paid

Input the loan amount, interest rate, and loan term to get an estimate of the total interest you will pay over the life of the mortgage. This feature helps you understand the long-term financial implications of your borrowing.

Comparing Different Loan Terms

Compare the monthly payments and total interest paid for various loan terms to decide which option fits your budget and financial goals. This tool enables you to make informed decisions about the duration of your mortgage.

Exploring Refinancing Opportunities

Using your existing mortgage details and potential new terms, analyze whether refinancing makes financial sense. Easily visualize how refinancing could impact your monthly payments and overall interest costs.

Adjusting Down Payments

Modify the down payment amount to see how it affects your monthly payments and the total interest paid. This feature helps you understand the impact of different down payment sizes on your mortgage.

Understanding Amortization Schedules

Generate an amortization schedule based on your loan details to see how your payments are split between principal and interest over time. This tool provides a clear breakdown of your repayment journey.

Calculating Affordability

Enter your income, debts, and expenses to determine the maximum mortgage amount you can afford. This feature helps you set a realistic budget and avoid overextending yourself financially.

Analyzing Bi-Weekly Payment Impact

Compare the savings between monthly and bi-weekly mortgage payments to see how the payment frequency affects the total interest paid and the payoff timeline. Explore the benefits of making bi-weekly payments to accelerate your mortgage payoff.

Considering Extra Payments

Input extra payment amounts and frequencies to see how they impact your loan balance, interest savings, and payoff timeline. This tool helps you visualize the benefits of making additional payments towards your mortgage.

Forecasting Home Equity Growth

Track the growth of your home equity over time based on your payment schedule and potential property value appreciation. Gain insights into how your equity will increase as you make mortgage payments and as your home value rises.

Other Resources and Tools