Interest Only Mortgage Comparison Calculator

Determining which mortgage provides you with the best value is more than simply comparing monthly payments. Use this calculator to sort through the monthly payments, fees and other costs associated with getting a new mortgage. By comparing these important variables side by side, this calculator can help you pick the mortgage that works best for you.

This Financial Calculator requires SUN's Java™ Plug-in. If you see this message you will need to download SUN's Java™ Plug-in. This can be done automatically by clicking the yellow bar at the top of your browser and choosing “Install ActiveX Control”.

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    For more information about these financial calculators please visit: Financial Calculators from KJE Computer Solutions, LLC

Definitions

Mortgage amount
The total amount for this mortgage.

Interest rate
The interest rate on this mortgage.

Amortization period
The number of years over which you will repay this loan. This calculator has two options. The 5/20 Interest Only option has a repayment period of 25 years. The first five years are interest only, the payment is then increased to fully payoff the loan balance over the remaining 20 years. The 10/15 Interest Only option has a repayment period of 25 years. The first 10 years are interest only, the payment is then increased to fully payoff the loan balance over the remaining 15 years.

Fees
Any fees that should be included in the APR calculation. These fees can vary by lender, but at a minimum usually includes prepaid interest.

Mortgage payment
Monthly interest payment using semi-annual compounding.

Equivalent monthly payment
The sum of periodic payments for a year divided by 12 months.

Accelerated weekly and bi-weekly payments
Accelerated weekly and accelerated bi-weekly payment options are calculated by taking a monthly payment schedule and assuming only four weeks in a month. We calculate an accelerated weekly payment, for example, by taking your normal monthly payment and dividing it by four. Since you pay 52 weekly payments, by the end of a year you have paid the equivalent of one extra monthly payment. This additional amount accelerates your loan payoff by going directly against your loan's principal. The effect can save you thousands in interest and take years off of your mortgage.

The accelerated bi-weekly payment is calculated by dividing your monthly payment by two. You then make 26 bi-weekly payments. Just like the accelerated weekly payments you are in effect paying an additional monthly payment per year.