Applications & Technology

DU Validation Service Resource Center

Lenders across the country are using the Desktop Underwriter® (DU®) validation service to deliver a superior borrower experience and get Day 1 Certainty®. Use the Resource Center to help optimize your use of the DU validation service. 

For detailed information and requirements, see the DU Validation Service Reference Guide. Login is required.

A single data source can verify more

Now, with DU validation service, lenders can opt in to use a 12-month asset verification report to validate income and employment. One 12-month asset report can be considered for:

  • Income validation
  • Employment validation
  • Asset validation
  • Rent payment history
  • Cash flow history


Leveraging the power of DU to provide you with Day 1 Certainty®

Day 1 Certainty® brings confidence that Fannie Mae will, with limited exceptions, provide enforcement relief on the representations and warranties related to the component of the loan file that was validated through the DU validation service.


How it works

DU validation service validates a borrower's assets, income, and employment to process more loans faster while giving a superior customer experience. Follow these steps to reduce manual processes and cycle times. 

Frequently Asked Questions

Find answers to common questions from lenders and borrowers.


Need more information?

Contact your account team or call 1-800-2FANNIE (1-800-232-6643)and press option 1 for technology support

Visit DU Validation Service