Fannie Mae's comprehensive True Cost Calculator allows you to determine all the costs associated with getting a mortgage and compare the costs of different types of mortgages, to help decide what's right for you.

Find out approximately how much money a lending institution will lend you, based on your income and your debts - worksheets are provided to assist in the calculations.

Determine how changes to the desired sales price of your prospective home will affect your payments.

Understand how your desired monthly payment will affect the price of the house you can afford.

Explore the outcome of changes to your loan balance, mortgage term, and interest rate on your monthly payment.

If you currently have a mortgage, determine whether refinancing is right for you.