Significant Changes to Fannie Mae and Freddie Mac Mortgage-Backed Securities – Accounting and Tax Considerations

The Single Security is a joint initiative between Fannie Mae and Freddie Mac (the Enterprises) to develop a Uniform Mortgage-Backed Security (UMBS). The goal of this initiative is to combine the separate To-Be-Announced (TBA) markets of the Enterprises (i.e., the TBA market for Fannie Mae Mortgage-Backed Securities, or MBS, and the TBA market for Freddie Mac Participation Certificates, or PCs) into a single, larger, more liquid TBA market, as well as to reduce or eliminate the trading disparities that exist today between the Enterprises’ TBA securities. This Single Security initiative launched in June 3, 2019.

The components of the Single Security initiative include: