Johns Hopkins University
The CFPB defines debt-to-income ratio as all monthly debt payments divided by gross monthly income. As a planning calculation, assemble the applicant's recurring debt obligations and gross monthly income using consistent monthly periods, then ask the lender which items it includes and what documentation it needs. The calculation is only one part of an actual mortgage assessment. This definition does not supply a universal approval threshold or resolve how a lender will treat student loans, variable pay, another borrower's income or a proposed rental payment. Ask for the lender's treatment of those facts rather than assuming that university enrollment or expected tenant demand establishes qualifying income. A preliminary ratio is a way to organize a conversation, not an approval, loan commitment or promise that the household can carry a particular purchase.
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