 Original mortgage amount
 Original amount of your mortgage.
 Appraised value
 The appraised value of your home when you purchased it.
 Current term in years
 Total length of your current mortgage in years.
 Years remaining
 Number of years remaining on your current mortgage.
 Income tax rate
 Your current income tax rate.
 Calculate balance
 To let the calculator determine your remaining balance, based on your original loan information and years remaining, check this box. To enter your own amount, leave this box unchecked.
 Current appraised value
 The current appraised value of your home.
 Loan balance
 Balance of your mortgage that will be refinanced.
 New interest rate
 The annual interest rate for the new loan.
 New term in years
 Number of years for your new loan.
 Loan origination rate
 This is the percentage of the new mortgage that is paid to the lender as the loan origination fee. Typically this fee is 1% of the loan balance.
 Other closing costs
 Estimate of all other closing costs for this loan. This should include filing fees, appraiser fees and any other miscellaneous fees paid.
 Points paid
 This is the number of points paid to the lender to reduce the interest rate on the mortgage. Each point costs 1% of the new loan amount.
 Current payment
 Your current payment is the sum of principal, interest and PMI (Principal Mortgage Insurance). Because refinancing does not affect your insurance or taxes, they are not included here.
 New payment
 Your new payment is the sum of principal, interest and PMI.
 Monthly PMI payment
 Monthly cost of Principal Mortgage Insurance (PMI). For loans secured with less than 20% down, PMI is estimated at 0.5% of your loan balance each year. Monthly PMI is calculated by multiplying your starting loan balance by this percent and dividing by 12. When the equity in your home exceeds the percentage required for PMI, your PMI payment drops to zero.
 Monthly PI payment
 Monthly principal and interest payment.
 Breakeven monthly payment savings
 The number of months it will take for your monthly payment reduction to be greater than closing costs.
 Breakeven PMI & interest savings
 The number of months it will take for your interest and PMI savings to exceed your closing costs.
 Breakeven total savings aftertax
 The number of months it will take for your aftertax interest and PMI savings to exceed your closing costs.
 Breakeven total savings vs. prepayment
 This is the most conservative breakeven measure. It is the number of months it will take for your aftertax interest and PMI savings to exceed both your closing costs and any interest savings from prepaying your mortgage. The prepayment amount used in this calculation is the amount that you would have to spend on closing costs.
