I found a great resource for mortgage calculators for those planners and analytic types in Washtenaw County, along with a quick video.

Mortgage Calculators for Ann Arbor Home Buyers

Refinance Calculators

Borrowers contemplating a refinance want to know whether the financial gain from a lower interest rate more than offsets the refinance costs; whether it is cheaper to raise cash through a refinance than through a second mortgage;  whether the cost of refinancing an ARM into an FRM is justified by the reduction in risk; and whether paying down the loan balance  in order to lower the refinance cost is a good investment; and whether it pays to consolidate short-term debt into a refinance.

Mortgage Payoff Calculators

Borrowers use mortgage payoff calculators to learn how different extra payment plans will affect the payoff date and the total amount of interest they  will have to pay.

Mortgage Payment Calculators

Borrowers use mortgage payment calculators to find the payments on FRMs and ARMs of different types and/or carrying special options, such as payment options or temporary buydowns.

Amortization Calculators

Borrowers use amortization calculators to monitor their progress in paying down the loan balance and increasing their equity, to see how the process would be affected by extra monthly payments or biweekly payments, and to check their tax savings.

Buying a House

Home buyers may use a calculator to determine how much they can afford to spend, and whether they should buy now or wait.

Mortgage Comparison

Borrowers choosing between different mortgages, including fixed-rate and ARMs, can use these calculators to compare future values of net cost.

Mortgage Interest Calculators

Borrowers choosing between different mortgages, including fixed-rate and ARMs, can use these calculators to compare their interest cost.

Consolidation Calculators

Borrowers with substantial amounts of short-term debt may use consolidation calculators to determine whether and how best to consolidate the debts in a mortgage.

Mortgage Insurance Calculators

Borrowers putting less than 20% down may use mortgage insurance calculators to decide whether to purchase mortgage insurance, the best premium plan, and how long they will have to pay it.

Points Calculators

Borrowers with an opportunity to pay points  to reduce the interest rate can use these calculators to find the break-even period, or the rate of return on investment.

Down Payment

Borrowers can use these calculators to find the rate of return on an increase in down payment, whether cash is better used for down payment than for points, and whether cash for settlement costs is better raised from the home seller or the lender.

Second Mortgages

Borrowers can use these calculators to determine whether a second mortgage “piggyback” is less costly than mortgage insurance or a jumbo first mortgage, or to compare two piggybacks.

Mortgage Term

Borrowers can use these calculators to explore how the term together with the interest rate affect the mortgage payment, and to determine whether a shorter term is a good investment.