Lenders generally use two different debt ratios to determine how much you can borrow. The short version is that your monthly housing payment (including taxes and insurance) should be no more than 28% of your pre-tax income, and your total debt (including your mortgage payment) should be no more than 36%. The ratio that produces the lower payment is what the lender will use. Many lenders have more generous qualification ratios, but these are traditionally the most common.
Find information on mortgage assistance and foreclosure prevention programs from various companies, federal government agencies, non-profits, HUD counseling agencies, banks and states. Numerous organizations have pledged to provide loan modification and other forms of mortgage help to millions of Americans. Resources are available that can help prevent or stop foreclosures as well as assist homeowners with paying their current and back mortgage payments.