This new Debt Reduction Calculator / Debt Snowball Calculator can be used to help plan how to pay off all of your credit card balances, auto loans, student loans, personal loans, consumer loans, etc.
You first list all of your debts, then choose a total monthly payment, and as you pay off your debts, the payment is rolled over to help pay for your next one.
You can choose from a few different strategies, such as debt snowball (lowest balance first) or highest-interest-first, or you can choose the exact order you want to pay off your debts.
The download page includes additional information on the different strategies.
This new home mortgage calculator spreadsheet can be used for adjustable-rate (ARM) mortgages or fixed-rate mortgages. It can also be used to calculate the interest savings when making extra payments, and calculates tax returned based on the tax bracket you enter. As you pay down your loan, you pay less interest, and therefore the tax deduction decreases. Also, there is a big difference between the way a fixed-rate mortgage works vs. an variable-rate mortgage when making extra payments.