Provide the following information: gross monthly income and total monthly payments (car payments, minimum monthly payments on credit cards, child support payments and all payments you make (every month) to the calculator.

A pre-qualify calculator can estimate how much you can afford to pay. Consider this the preliminary stage of a mortgage loan application. You will likely need to have your credit history on hand, as well as verification of you income, assets, and debt. Once all your finances are calculated, you should have a good idea of the type and amount of loan for which you qualify.