DU Validation Service

The Desktop Underwriter® (DU®) validation service validates loan application data upfront, gives you faster and easier validation, and freedom from representations and warranties on validated income, assets, and employment.

Streamline Your Process

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Data Vendor Information
The DU validation service uses third-party data vendors to independently validate borrower income, assets, and employment data, providing our lenders Day 1 Certainty on validated loan components.

Fannie Mae has an open platform for data vendor participation to provide choices to our customers.

Current Data Vendor List.

Data Vendor Process.

Getting Started

Are You Ready for Day 1 Certainty?

Help & Training

DU/DO/Fannie Mae Connect user credentials are needed to access the files with lock icons below.

What's New

  • Brief DU validation service outage 12/13 new

    The DU validation service will be unavailable on Friday, Dec. 13 from 9:00 p.m. ET to Saturday Dec. 14 at 12:00 a.m. ET. Lenders should submit casefiles to DU to validation income, employment and or assets before or after this time.

  • Updated DU Specification published supporting updated redesigned URLA

    Fannie Mae has published the updated DU Specification v1.8 and resources supporting implementation of the updated redesigned Uniform Residential Loan Application (URLA/Form 1003) published on Oct. 23, 2019.

DU Validation Service Updates

Frequently Asked Questions

Message for Data Vendors

Release Notes

User Help

Have a question? Access the page below to contact the Technology Support Center for help.

Technology Terms and Conditions