Freddie Mac, formally the Federal Home Loan Mortgage Corporation, is a government-sponsored enterprise created by the U.S. Congress in 1970 to expand the secondary market for mortgages. Rather than lending directly to homebuyers, Freddie Mac buys mortgages that banks and other lenders have already originated, then either holds them or packages them into mortgage-backed securities that are sold to investors, freeing up the original lender's capital to make more new loans.
Freddie Mac's core purpose is to keep mortgage financing flowing through the broader economy by providing lenders with a reliable buyer for conforming mortgages, loans that meet Freddie Mac's specific size, documentation, and credit-quality standards. This liquidity function is one of the main reasons long-term, fixed-rate mortgages are widely and consistently available in the United States at relatively competitive rates compared with many other countries' mortgage markets.
Freddie Mac in plain terms
Imagine a bank that lends out all its available cash to homebuyers would eventually run out of money to lend to the next buyer, unless something let it recycle that capital. Freddie Mac acts as that recycling mechanism: it buys the loan from the original bank, handing the bank cash it can lend out again immediately, while Freddie Mac itself (or the investors it sells the loan on to) collects the ongoing mortgage payments from the original borrower over time.
History and government status
Freddie Mac was placed into federal conservatorship in September 2008 during the 2008 financial crisis, after mortgage losses severely damaged its financial position, and has remained under the oversight of its regulator, the Federal Housing Finance Agency, ever since. Although Freddie Mac is a publicly traded, shareholder-owned company rather than a government agency, its historical ties to the federal government and the broad market assumption that it would be supported in a crisis have long made its debt and guaranteed securities attractive to investors seeking lower risk than purely private mortgage-backed securities.
Freddie Mac versus Fannie Mae
Freddie Mac operates alongside a similar, older government-sponsored enterprise, Fannie Mae, with both buying conforming mortgages from lenders and issuing mortgage-backed securities, and both subject to the same federal regulator and broadly similar loan-size and underwriting standards. Having two enterprises rather than one was originally intended to create some competition and reduce the systemic risk of concentrating the entire secondary mortgage market in a single institution, though both faced similar stresses during the 2008 crisis.
Why Freddie Mac matters to ordinary borrowers
Most homebuyers never interact with Freddie Mac directly, since it operates behind the scenes with lenders rather than with borrowers, but its underwriting standards still shape what a conforming mortgage looks like in practice, including maximum loan amounts, minimum credit score requirements, and documentation standards that lenders generally follow in order to be able to sell the resulting loan to Freddie Mac after closing.
Freddie Mac's role in mortgage-backed securities
When Freddie Mac bundles mortgages into securities, it generally guarantees timely payment of principal and interest to the investors who buy them, even if some underlying borrowers default, in exchange for a guarantee fee. This guarantee, and the broad market assumption of implicit government backing that has persisted since the 2008 conservatorship, is a major reason Freddie Mac-guaranteed securities trade at yields much closer to U.S. Treasury securities than purely private mortgage bonds would, which in turn helps keep interest rates on conforming mortgages lower than they would otherwise be for ordinary borrowers.
Conforming loan limits
Each year, Freddie Mac and Fannie Mae publish updated conforming loan limits, the maximum loan size eligible to be purchased under standard terms, which are adjusted based on changes in average home prices and can vary by region, with higher limits in areas where housing costs are significantly above the national average. A mortgage above these limits, known as a jumbo loan, cannot be sold to Freddie Mac and is instead held or sold through entirely private channels, which is one reason jumbo loans sometimes carry different pricing and underwriting standards than conforming loans of a similar size and risk profile.