Your debt-to-income ratio, which is usually calculated by dividing all your monthly debts by your monthly income, is a key factor in mortgage underwriting, said Christelle Bamona, a senior researcher at the Center for Responsible Lending. “Those eligible for SAVE will experience reduced payments, which will in turn lower their debt-to-income ratio,” Bamona said. Most borrowers should qualify for the SAVE plan as long as their loan is in good standing.