If you have a student loan or are a cosigner on one, listen up. Fannie Mae just introduced three new rule changes that will affect those with student debt. The first change has to do with income-based repayment plans, which is the top reason for not being approved by a mortgage if you have a high debt-to-income ratio. With the new rule change, your ratio will be determined by your monthly payment, not the conservative 1% of the total loan that they were using. To learn more about all of these changes in more detail, watch this short video.