Undisclosed Debt During Mortgage Processing: What Happens

Undisclosed debt is one of the most common reasons a loan falls out of underwriting or gets kicked back at closing. Borrowers do not always understand that opening new credit during the loan process can invalidate the approval they already received.

What Counts as Undisclosed Debt

Any new financial obligation incurred after the initial application counts as undisclosed debt if the lender has not been informed and has not factored it into the DTI calculation. This includes new auto loans, personal loans, new credit cards used for large balances, co-signing on another's loan, financing new furniture or appliances, and taking on new payment plans. It also includes student loan deferments ending and income-based repayment changing to full standard repayment.

How It Is Detected

• ✦Verification of employment at closing (day-of-funding VOE): most lenders require this to confirm employment still exists, but some also run a soft credit pull at closing
• ✦Trigger leads: when a borrower's credit is run for pre-qualification, credit bureaus may sell that inquiry data to competing lenders who then market to the borrower; competing lenders may run their own pulls that generate new inquiries visible in the file
• ✦New tradeline alerts: some lenders subscribe to credit monitoring services that flag new account openings on borrowers in their pipeline
• ✦4506-C tax return pulls: any new co-signed loan that appears on a borrower's tax return could surface in a post-closing audit

What to Tell Borrowers at Application

Set expectations clearly at application: do not apply for new credit, do not open new accounts, do not finance any large purchases, and do not co-sign on any loan from application through funding. If a borrower has already incurred new debt before you discover it, the options are to document the new obligation, rerun DU or LP with the updated liability, and determine whether the approval still holds. If DTI exceeds the program maximum with the new debt, the file must be restructured or declined.