The Future of Fannie Mae and Freddie Mac

American Enterprise Institute (AEI)
American Enterprise Institute (AEI)Mar 19, 2026

Why It Matters

The GSEs’ massive mortgage guarantee creates systemic risk that directly ties taxpayer exposure to housing market volatility, making reform a fiscal priority for policymakers.

Key Takeaways

  • Fannie and Freddie guarantee ~50% of US mortgages
  • Conservatorship assets total $7.8 trillion, posing systemic risk
  • Taxpayer equity now $366 billion after 2008 bailout
  • Future reforms could shift ownership, risk to Treasury
  • Congress must decide GSEs' structure and market role

Pulse Analysis

Fannie Mae and Freddie Mac, the government‑sponsored enterprises (GSEs) that underwrite roughly 50 percent of U.S. home loans, have been operating under Federal Housing Finance Agency conservatorship since the 2008 financial crisis. Their mandate to provide liquidity to the secondary mortgage market keeps mortgage rates low and expands credit access, especially for first‑time buyers. Yet their sheer scale—about $7.8 trillion in assets—means they sit at the heart of the housing finance system, and any disruption could reverberate through lenders, investors, and homeowners alike. Because they operate with an implicit government backstop, investors treat GSE securities as quasi‑risk‑free, further deepening their market influence.

The 2008 bailout injected $187 billion of public capital, and the Treasury’s equity stake has swelled to roughly $366 billion, effectively turning taxpayers into the GSEs’ primary shareholders. This implicit guarantee shields investors from loss but also transfers mortgage‑market volatility onto the federal balance sheet. As housing prices fluctuate, the potential for further losses raises concerns about fiscal sustainability and the moral hazard of encouraging risky lending practices. Moreover, the accrued dividends paid to the Treasury have generated billions in revenue, yet they do not offset the underlying credit risk. Understanding this exposure is essential for evaluating the true cost of the GSEs’ safety net.

Congress now faces a crossroads: maintain the status quo, restructure ownership, or wind down the enterprises entirely. Proposals range from privatizing the GSEs and limiting Treasury guarantees to creating a new, risk‑based capital framework that aligns incentives with market discipline. Each option carries trade‑offs between housing affordability, financial stability, and taxpayer risk. A carefully calibrated reform could preserve the liquidity benefits while reducing systemic danger, but indecision risks prolonging uncertainty for mortgage markets and could dampen investor confidence. Ultimately, the chosen path will shape the next generation of mortgage financing and determine the extent of federal exposure to housing cycles.

Original Description

Fannie Mae and Freddie Mac, though in conservatorship, still play an outsized role in the US housing market, guaranteeing about half of all outstanding residential mortgages and representing a massive $7.8 trillion in assets. They are without doubt systemically important concentrations of mortgage risk.
Historically, they were privately owned companies with the public subsidy in the form of a free implicit guarantee of their obligations by the US Treasury. This guarantee led to their 2008 bailout, when they received $187 billion in taxpayer support; the government’s equity interest has since grown to $366 billion.
Join AEI for a discussion on how Congress could approach Fannie and Freddie’s future structure, ownership, role, and the extent of the risk to the Treasury they will be allowed to pose.
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