About mortgages.....................Using ratios, a mortgage company analyzes your mortgage payment. There is a Front Ratio (or your housing payment ratio) that compares your total mortgage payment to your monthly income. The Back Ratio of 36% (or the total debt expense) is compared to your total monthly obligations including your total mortgage payment to your monthly income.
These ratios are just a guide line.
A mortgage professional will be able to give you a complete prequalification analysis .