Learning Center image Fannie Mae provides technology, data and document requirements, and resources related to Whole loans and MBS Pool deliveries to Fannie Mae.

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Technology Applications & Tools

Loan Delivery Data Requirements

  • Uniform Loan Delivery Dataset (ULDD)

    The Uniform Loan Delivery Dataset (ULDD) was jointly established by Fannie Mae and Freddie Mac to provide common requirements for loan delivery data.

Pricing & Yields


Pool Settlement Dates

Loan & Pool Delivery

What's New

  • Have You Watched the New LDTE Tutorial? new

    This short tutorial provides an overview of the MBS pool and whole loan import processes in the new Loan Delivery Test Environment (LDTE).

  • Announcement SEL-2015-10 new

    This Selling Guide update includes details about HomeReady mortgage; updated homeownership education requirements; simplified requirements for high-balance mortgage loans; and expanded eligibility for non-occupant borrowers.

Selling Guide

Access the Guide via the link below or

Recent Newsletters

  • Quarterly Compass

    Provides information on Fannie Mae initiatives and upcoming milestones, and what lenders need to know to successfully navigate the changes ahead.

Frequently Asked Questions