Federal Agencies

Government & Agency Securities
intermediate
8 min read
Updated Jan 7, 2026

What Are Federal Agencies?

Federal agencies are government-sponsored enterprises and federal entities that issue debt securities to finance housing, agriculture, and infrastructure, providing investors with relatively safe fixed-income investments backed by implicit government guarantees.

Federal agencies are government-sponsored enterprises (GSEs) and federal government entities that issue debt securities to support specific sectors of the economy, particularly housing finance. These organizations were created by Congress to provide liquidity and stability to targeted markets that are important to the broader economy. Federal agencies play a crucial role in making homeownership accessible to millions of Americans by ensuring that mortgage credit remains available even during economic downturns. The most prominent federal agencies include Fannie Mae (Federal National Mortgage Association), Freddie Mac (Federal Home Loan Mortgage Corporation), and Ginnie Mae (Government National Mortgage Association). These entities purchase mortgages from banks and package them into mortgage-backed securities (MBS) that are sold to investors worldwide. While Fannie Mae and Freddie Mac operate as shareholder-owned corporations, they benefit from an implicit government guarantee that makes their securities very safe investments, second only to U.S. Treasury securities. Other important federal agencies include the Federal Home Loan Banks, which provide liquidity to member financial institutions, and the Federal Farm Credit Banks, which support agricultural lending. These agencies collectively issue trillions of dollars in debt securities, making them major participants in global fixed-income markets. Understanding federal agencies is essential for fixed-income investors seeking higher yields than Treasuries while maintaining very low credit risk.

Key Takeaways

  • Federal agencies include GSEs like Fannie Mae, Freddie Mac, and federal entities like Ginnie Mae that issue mortgage-backed securities
  • Agency securities offer higher yields than Treasury bonds but with very low credit risk due to government backing
  • They play a crucial role in the U.S. housing finance system by providing liquidity to mortgage lenders
  • Agency debt includes both agency bonds and agency mortgage-backed securities (MBS)
  • Investors use agency securities for diversification and as a substitute for Treasuries with slightly higher yields
  • The agencies operate under federal oversight but are not explicitly guaranteed by the U.S. government

How Federal Agencies Operate

Federal agencies operate under a unique structure that combines private-sector operations with public-sector oversight. They are chartered by Congress to serve specific public purposes but operate as shareholder-owned corporations. This hybrid structure allows them to access private capital markets while serving public policy goals that benefit the broader economy and specific sectors like housing and agriculture. The agencies are regulated by federal supervisory bodies such as the Federal Housing Finance Agency (FHFA) for housing GSEs. During the 2008 financial crisis, Fannie Mae and Freddie Mac were placed into conservatorship by the U.S. government, which continues to this day. This conservatorship provides explicit government backing for their obligations, making their securities among the safest investments available after U.S. Treasuries. The operational model involves purchasing loans from originating banks, pooling those loans together, and issuing securities backed by the cash flows from the underlying mortgages. This securitization process transfers risk from individual banks to investors while providing banks with capital to make additional loans. Agency securities trade actively in secondary markets, providing investors with liquidity and price transparency that rival Treasury securities.

Types of Federal Agency Securities

Federal agencies issue two main types of securities: agency bonds and agency mortgage-backed securities (MBS). Agency bonds are straightforward debt obligations issued by the agencies themselves, typically with maturities ranging from short-term (overnight) to long-term (30 years). These bonds pay fixed or floating interest rates and are backed by the agency's general creditworthiness. Agency MBS are securities backed by pools of residential mortgages purchased by the agencies. Ginnie Mae issues MBS backed by government-insured mortgages (FHA, VA, etc.), while Fannie Mae and Freddie Mac issue MBS backed by conventional mortgages that meet their underwriting standards. These securities provide investors with exposure to the residential mortgage market while benefiting from agency backing.

Role in Housing Finance System

Federal agencies play a critical role in the U.S. housing finance system by providing liquidity to mortgage lenders and ensuring that homebuyers have access to affordable financing. When banks originate mortgages, they can sell these loans to the agencies, which package them into MBS and sell them to investors. This process allows banks to replenish their capital and originate more loans, creating a continuous cycle of mortgage financing. The agencies' guarantee of mortgage-backed securities reduces risk for investors and lowers borrowing costs for homeowners. Without this system, mortgage rates would likely be higher, and fewer people would be able to afford homeownership. The agencies also help stabilize the housing market during economic downturns by continuing to purchase mortgages when private investors reduce their activity.

Important Considerations for Agency Securities

While agency securities are considered very safe investments, there are important considerations for investors. Although they benefit from implicit government support, they are not explicitly backed by the "full faith and credit" of the U.S. government like Treasury securities. However, the government's conservatorship of Fannie Mae and Freddie Mac has made this distinction largely academic. Agency securities offer higher yields than comparable Treasury securities, typically 10-50 basis points more depending on the maturity and type of security. They provide diversification benefits and are often used by institutional investors to fine-tune portfolio duration and yield. However, agency MBS carry prepayment risk, as homeowners may refinance when interest rates fall, returning principal earlier than expected.

Advantages of Federal Agency Securities

Federal agency securities offer several compelling advantages for fixed-income investors. Their high credit quality, backed by government sponsorship, makes them excellent substitutes for Treasury securities with slightly higher yields. This yield pickup compensates investors for the marginally higher (but still very low) credit risk compared to Treasuries. Agency securities provide valuable diversification in a fixed-income portfolio, particularly for investors seeking exposure to the residential mortgage market. They offer a wide range of maturities and structures, allowing investors to match specific duration and yield requirements. The agencies' role in supporting housing finance also provides indirect benefits to the broader economy, creating a positive social impact component for ESG-focused investors.

Disadvantages of Federal Agency Securities

Despite their advantages, federal agency securities have some drawbacks that investors should consider. The most significant risk is prepayment risk in agency MBS, where falling interest rates can lead to higher-than-expected principal repayments as homeowners refinance. This can shorten the effective duration of the investment and reduce expected yields. Agency securities are also subject to interest rate risk like any fixed-income investment. When interest rates rise, the value of existing agency bonds and MBS declines. Additionally, while the government backing provides safety, changes in the regulatory environment or the agencies' structure could potentially affect their credit quality. Finally, agency MBS can be more complex to analyze than straightforward corporate or government bonds.

Real-World Example: Agency MBS Investment

An investor purchases $100,000 of Fannie Mae MBS with a 4% coupon rate when mortgage rates are at 4%.

1Initial investment: $100,000
2Annual coupon payment: $4,000 (4% of $100,000)
3Mortgage rates decline to 3% after 2 years
4Homeowners begin refinancing, increasing prepayments
5Investor receives $20,000 in prepayments in year 3
6Remaining balance generates lower yield on reinvested funds
Result: The investor receives $4,000 in annual interest but faces $20,000 in prepayments, reducing the effective yield as reinvestment occurs at lower prevailing rates, demonstrating the prepayment risk inherent in agency MBS investments.

Major Federal Agencies and Their Roles

Key federal agencies involved in debt issuance and their primary functions.

AgencyPrimary FunctionSecurities IssuedGovernment Backing
Fannie Mae (FNMA)Purchase conventional mortgagesAgency bonds, MBSConservatorship (explicit backing)
Freddie Mac (FHLMC)Purchase conventional mortgagesAgency bonds, MBSConservatorship (explicit backing)
Ginnie Mae (GNMA)Guarantee government-insured mortgagesMBS onlyFull faith and credit guarantee
Federal Home Loan BanksProvide liquidity to member banksDiscount notes, bondsJoint and several liability
Federal Farm Credit BanksFinance agricultural lendingBonds, discount notesGovernment backing

Tips for Investing in Agency Securities

When investing in agency securities, focus on understanding prepayment risk, especially in MBS. Consider the current interest rate environment and how it might affect homeowner behavior. Agency bonds are generally simpler and more predictable than MBS. Diversify across different agencies and maturities to manage risk. Consider agency securities as part of a broader fixed-income strategy rather than as standalone investments.

Common Questions About Agency Securities

Frequently asked questions about federal agency securities:

  • Are agency securities risk-free? - They have very low credit risk but are not completely risk-free; they carry interest rate and prepayment risk.
  • Why do agencies exist? - They provide liquidity to important sectors like housing and agriculture that might not attract sufficient private investment.
  • What's the difference between agency bonds and agency MBS? - Agency bonds are direct debt of the agency; MBS are securities backed by pools of mortgages.
  • How are agency securities taxed? - Interest income is taxable at federal and state levels, similar to other fixed-income investments.
  • Can individuals invest in agency securities? - Yes, through brokerage accounts, though most trading occurs among institutional investors.

FAQs

Federal agency securities are issued by government-sponsored enterprises rather than directly by the U.S. Treasury. While they benefit from government support, they are not backed by the full faith and credit of the U.S. government like Treasuries. Agency securities typically offer slightly higher yields to compensate for this difference.

Federal agency securities are considered very safe investments with very low credit risk due to government sponsorship and backing. During the 2008 crisis, Fannie Mae and Freddie Mac were placed in conservatorship, providing explicit government support for their obligations.

Prepayment risk occurs when homeowners refinance their mortgages during periods of falling interest rates, causing investors in MBS to receive principal payments earlier than expected. This forces reinvestment at lower prevailing rates, reducing the expected yield.

Federal agencies provide liquidity to mortgage lenders by purchasing mortgages and packaging them into securities sold to investors. This allows banks to originate more loans and ensures that homebuyers have access to affordable financing options.

Agency securities are popular among institutional investors including banks, insurance companies, pension funds, and mutual funds. They are used for portfolio diversification, duration management, and as higher-yielding alternatives to Treasury securities.

Since the 2008 financial crisis, federal agencies operate under stricter regulatory oversight and capital requirements. Fannie Mae and Freddie Mac remain in conservatorship, and there have been ongoing discussions about reforming the housing finance system.

The Bottom Line

Federal agencies play a vital role in the U.S. financial system by providing liquidity to key sectors like housing and agriculture while offering investors relatively safe fixed-income securities. While they are not explicitly guaranteed by the U.S. government like Treasury securities, their government sponsorship and conservatorship status make them very low-risk investments with slightly higher yields. Agency securities provide important diversification benefits and exposure to the mortgage market, though investors should understand prepayment risk, especially in MBS. As government-sponsored enterprises, the agencies balance private-sector efficiency with public policy objectives, supporting economic stability and homeownership. For conservative fixed-income investors seeking higher yields than Treasuries, agency securities represent an excellent option within a diversified portfolio.

At a Glance

Difficultyintermediate
Reading Time8 min

Key Takeaways

  • Federal agencies include GSEs like Fannie Mae, Freddie Mac, and federal entities like Ginnie Mae that issue mortgage-backed securities
  • Agency securities offer higher yields than Treasury bonds but with very low credit risk due to government backing
  • They play a crucial role in the U.S. housing finance system by providing liquidity to mortgage lenders
  • Agency debt includes both agency bonds and agency mortgage-backed securities (MBS)