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Breaking Your Mortgage Calculator

Reviewed by Calculator Editorial Team

Breaking your mortgage means making extra payments to pay off your loan faster. This calculator helps you determine how long it will take to break your mortgage and how much you'll save in interest by making extra payments.

How the Mortgage Break Calculator Works

The mortgage break calculator uses the amortization formula to determine how long it will take to pay off your mortgage with extra payments. The formula takes into account your current mortgage balance, interest rate, and the amount of your extra payments.

Formula Used

The number of months to break your mortgage is calculated using:

Months to Break = (Log(1 - (Balance × Interest Rate / Extra Payment)) / Log(1 + Interest Rate)) × -1

Where:

  • Balance is your current mortgage balance
  • Interest Rate is your monthly mortgage interest rate (annual rate divided by 12)
  • Extra Payment is the amount of your extra monthly payment

The calculator also calculates the total interest saved by making extra payments compared to your regular monthly payment.

How to Use the Calculator

  1. Enter your current mortgage balance in the "Current Balance" field.
  2. Enter your annual interest rate in the "Annual Interest Rate" field.
  3. Enter the amount of your regular monthly payment in the "Regular Monthly Payment" field.
  4. Enter the amount of your extra monthly payment in the "Extra Monthly Payment" field.
  5. Click the "Calculate" button to see how long it will take to break your mortgage and how much interest you'll save.
  6. Use the "Reset" button to clear all fields and start over.

Note: The calculator assumes you make your extra payments in addition to your regular monthly payment. It does not account for changes in your interest rate or other factors that might affect your mortgage.

Example Calculation

Let's say you have a mortgage balance of $200,000, an annual interest rate of 4%, and a regular monthly payment of $1,200. You want to make an extra $200 each month to break your mortgage faster.

Using the calculator:

  • Current Balance: $200,000
  • Annual Interest Rate: 4%
  • Regular Monthly Payment: $1,200
  • Extra Monthly Payment: $200

The calculator will show that it will take approximately 120 months (10 years) to break your mortgage with these extra payments, and you'll save about $12,000 in interest compared to making only the regular payments.

Frequently Asked Questions

How accurate is the mortgage break calculator?

The calculator provides an estimate based on the information you provide. For precise results, consult with your mortgage lender or use a more detailed amortization schedule.

Can I use the calculator for any type of mortgage?

Yes, the calculator can be used for any type of mortgage, including fixed-rate and adjustable-rate mortgages. However, the results may vary depending on the terms of your specific mortgage.

How do extra payments affect my mortgage?

Making extra payments reduces your principal balance faster, which means you'll pay less in interest over the life of your mortgage. However, it may also reduce the amount of your future mortgage payments if you're pre-paying interest.

Is it better to make extra payments at the beginning or end of my mortgage term?

Making extra payments at the beginning of your mortgage term is generally more beneficial because you'll pay less interest over time. However, the exact impact depends on your specific mortgage terms and interest rate.

Can I use the calculator to compare different extra payment scenarios?

Yes, you can use the calculator to compare different extra payment amounts and see how they affect the time it takes to break your mortgage and the amount of interest you'll save.