CESIR™, the Credit Enhancement Servicing and Investor Reporting system, is a Web-enabled solution for the investor reporting process for bond credit transactions.

Availability Status

Monday through Friday, 7:30 a.m. to 10 p.m. ET, and Saturday, 8:30 a.m. to 7 p.m. ET (except Fannie Mae observed holidays).

CESIR User Guides and Schedule

Additional Help

Have a question? Contact the Technology Support Center.
 

Call Us at 1-800-2FANNIE (1-800-232-6643). Press 1, then press 1.
 

Hours of operation: 24 hours a day, 7 days a week, excluding the following holidays:
 

  • New Year’s Day
  • Memorial Day
  • Independence Day
  • Labor Day
  • Thanksgiving Day
  • Christmas Day

NOTE: On the evening prior to a holiday closure, the Technology Support Center will close at 8 p.m. ET and will reopen the day after the holiday at 8 a.m. ET.
 

Call Center Quick Reference Guide

Please note that the Web Chat and Share My Desktop links are only available to registered technology application users.

Fannie Mae applications are currently compatible with computers that run on the Microsoft® Windows® 8.1 Enterprise Edition. 

Your Web browser must be set to enable Java™ and JavaScript™ and to accept cookies. The following browsers have been tested with our secure servers and are necessary for secure connections:

  • Microsoft Internet Explorer® 11
  • Mozilla Firefox® Version 38.1.1
  • Google Chrome™ Version 46

For additional information, see the Technology Requirements: Configurations for Applications.

Related Applications

Technology Terms & Conditions

The Technology Terms and Conditions previously provided on this page are now located in the new Consolidated Technology Guide. A PDF version of the Guide and other related content is available on the Consolidated Technology Guide page.