How much mortgage can you get? If you want to get formal about it, you can get in touch with a Loan Officer and get preapproved for a mortgage, but that might be a step too far for some to consider. Another way is to look into a mortgage access index online. By considering several different variables like credit score, debt to income ratio, and loans you might have, you can quickly get a solid picture based on Fannie Mae Loan Acquisition data. Find out how much mortgage you can afford today, read more here.