Mortgage Savings Calculator to
Calculate Mid-Term Prepayment Plan

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The Mortgage Savings Calculator on this page will show you how you can afford a better next home by making prepayments on your current home.

Not planning to stay in your current home until the mortgage is paid off?

Want to be able to afford a nicer next home?

If you answered "Yes" to both of those questions, then you've come to the right place.

This mid-term extra payment saving calculator will calculate the interest you will save if you add a prepayment amount to any number of your future mortgage payments.

In turn, you can then use the additional equity and prepayment interest savings to purchase a nicer next home!

Only Applicable Savings Makes Sense

How to Make Prepayments on Your Next Home

Suppose you've been making payments on a $250,000, 6%, 30-year mortgage for the past 3 years, but you only plan to stay in your home for another 5-years.

If you were able to free up an extra $200 per month to add to your current mortgage payment, 5 years from now you will be able to apply the following prepayments to the purchase of your next home:

- An additional $12,000 in equity.

- $2,000 in interest savings.

That's $14,000 you won't have to borrow and pay interest on!

But wait, if you have high-interest debts and apply the $200 per month to a rapid debt reduction plan, you may be able to double or triple the $14,000 prepayment on your next home.

As pointed out by the insightful visitor who requested the mortgage savings calculator, if you only plan to stay in your current home for 8-10 years, then it doesn't make much sense to calculate prepayment savings over the life of the home loan.

So, unlike most mortgage prepayment calculators, this specific mortgage prepayment calculator is designed to calculate prepayment savings based on the number of years you plan to stay in your current home.

Other Interest-Saving Prepayment Calculators

If you would like to calculate the prepayment savings from now until the mortgage is completely paid off, please use the Prepay Mortgage Calculator instead -- which includes a list of things you should consider before prepaying your mortgage.

Or, if you would like to calculate the savings for a combination of one-time, monthly, and annual prepayments, please visit the Extra Payment Mortgage Calculator.

How Do Prepayments Create Mortgage Interest Savings?

When you take out a loan to purchase a home, the monthly payment is based on the number of years you plan to take to repay the loan.

Each month during the life of the repayment, the bank calculates the interest portion of each payment on the total balance of the loan. The interest is then subtracted from the payment -- leaving the amount that is used to reduce how much you owe (principal portion).

This means that if you make a payment over and above the prescribed payment amount ...

You will have lowered the amount you will be charged interest on for every single month of your remaining repayment term!

This is because each time the bank goes to calculate interest, the amount you will be charged interest on will be lower than what the original payment amount was based on.

In other words, when you add an amount to your current prescribed payment, you haven't just created mortgage interest savings on your next payment, but you have also created mortgage interest savings for every month for the rest of the repayment term.

And this is true for every time you add a prepayment amount to your existing payment.

In fact, even if you only make a single, one-time prepayment, your annual mortgage interest savings will actually grow over time -- because more and more of each payment is being applied to paying off the home loan.

With that, let's use the Mortgage Savings Calculator to calculate how much interest you could save if you added a prepayment amount to any number of your future monthly house payments between now and when you plan to sell your current home.

Mortgage Savings Calculator
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Instructions: Enter the original home loan amount, the annual percentage rate (APR), the original home loan term in years, and the number of payments you've already made

Next, enter the amount you wish to add to your existing monthly mortgage payment and the number of years/months you would like to continue making the monthly prepayment.

Finally, enter the number of years you would like the mortgage savings calculator to calculate savings for, then click the "Calculate Mortgage Prepayment Savings" button.

Mouse over the blue question marks for a further explanation of each entry field. More in-depth explanations can be found in the glossary of terms located beneath the Mortgage Savings Calculator.

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Help Original mortgage amount ($):
Help Annual interest rate (%):
Help Original home loan term in number of years (#):
Help Number of mortgage payments already made (#):
Help Monthly mortgage prepayment amount (#):
Help Number of to apply prepayment amount (#):
Help Number of years you plan to stay in current home (#):
Help Current mortgage balance:
Help Current monthly principal and interest payment:
Help Monthly payment when prepayment is added:
Help Mortgage interest savings from prepayment(s):
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Mortgage Savings Calculator Glossary of Terms

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Original home loan amount: The dollar amount of the original home loan (principal borrowed).

Original mortgage amount: Enter the dollar amount of the original mortgage (principal borrowed).

Annual interest rate: Enter the annual percentage rate (APR) of the mortgage.

Original home loan term in number of years: Enter the original repayment term of the home loan in number of years.

Number of mortgage payments already made: Enter the number of monthly mortgage payments you have already made. If you have not made any payments, leave blank or enter a zero.

Monthly mortgage prepayment amount: Enter the monthly amount you can afford to add to your existing monthly payment.

Number of months/years to apply prepayment amount: Enter the number of months or years you will continue to add the prepayment amount to the existing payment.

Number of years you plan to stay in current home: Enter the number of years you plan to stay in your current home. The mortgage savings calculator will calculate mortgage prepayment savings for the entered number of years, or until the mortgage is paid off -- whichever is sooner.

Current mortgage balance: Based on your entries, this is how much you still owe (principal balance) on your mortgage after deducting all of the principal payments you have already made.

Current monthly principal and interest payment: Based on your entries, this is the amount of your current monthly principal and interest (PI) payment. This does not include property tax or insurance payments. If this result does not closely match your actual payment, please check that you have entered the correct beginning balance, term, interest rate, and number of payments made.

Monthly payment when prepayment is added: Based on your entries, this is your current monthly payment plus the prepayment amount you entered in the top section of the mortgage savings calculator.

Mortgage interest savings from prepayment(s): Based on your entries, this is how much interest you will save if you add the prepayment amount for the number of months/years you entered, and if you stay in the home for the entered number of years.

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