Full Faith and Credit vs Implied Backing

Treasury bonds are direct obligations of the United States government, backed by its full faith and credit. Agency bonds are issued by federal agencies or government-sponsored enterprises, and most of them, including the debt of Fannie Mae, Freddie Mac and the Federal Home Loan Banks, carry only an implied guarantee. Because of that difference, agency bonds pay slightly higher yields than Treasuries of the same maturity.

Two further differences complete the picture. Treasury interest is exempt from state and local income tax, while the tax treatment of agency interest depends on the issuer. Treasuries are almost never callable, while many agency bonds are.

The comparison appears in investment vehicle questions and in client scenarios that turn on safety, income and taxes. For the full route from the exam to a career in advice, our complete guide to how to become an investment adviser representative covers every step.

Explore all FRC study playlists on our YouTube channel

What Treasury Securities Are

The Treasury Department borrows on behalf of the federal government through four main types of marketable security. Treasury bills mature in one year or less and are sold at a discount, paying no coupon. Treasury notes mature in two to ten years, and Treasury bonds mature in twenty or thirty years, both paying interest every six months.

Treasury Inflation-Protected Securities adjust their principal with inflation, and floating rate notes reset their interest with short-term bill rates. Treasuries are sold at regular auctions and trade in the deepest, most liquid bond market in the world.

Their yields serve as the benchmark for almost every other borrowing rate, and the Treasury yield is commonly used as the risk-free rate of return in finance. The Series 65 Exam Preparation course at FRC covers each Treasury type alongside the agency market, with the tax and yield comparisons the exam expects.

What Agency Bonds Are

An agency bond is issued by one of two kinds of organisation. The first is a federal government agency, part of the government itself. The Government National Mortgage Association, known as Ginnie Mae, is the key example, and its securities carry the full faith and credit of the United States, just like Treasuries.

The second, and much larger, group is the government-sponsored enterprises. These are privately owned or federally chartered companies created by Congress to support lending in areas such as housing and agriculture. Fannie Mae, Freddie Mac, the Federal Home Loan Banks and the Federal Farm Credit Banks are the main issuers.

Debt from government-sponsored enterprises is not explicitly guaranteed by the federal government. Investors rely on the assumption that the government would step in to prevent a default, an assumption strengthened when Fannie Mae and Freddie Mac were placed into federal conservatorship in September 2008. That implied backing is why their bonds trade only slightly above Treasury yields.

Agency Bonds vs Treasury Bonds at a Glance

Why Agency Bonds Yield More

The yield gap between agencies and Treasuries, known as the agency spread, rewards investors for three things. The first is the small credit risk that comes from implied rather than explicit backing.

The second is lower liquidity. Agency bonds trade actively, but not with the depth of Treasuries, so investors who need to sell quickly may receive a slightly lower price. That makes liquidity risk a real, if modest, factor.

The third is call risk. Many agency bonds can be redeemed early by the issuer, and as our article on callable vs non-callable bonds explains, investors demand extra yield for accepting that the issuer may repay just when rates have fallen.

Tax Treatment: Where the Real Difference Lies

Interest on all Treasury securities is subject to federal income tax but exempt from state and local income tax. For an investor in a high-tax state, that exemption can make a Treasury more attractive than a higher-yielding agency bond.

Agency tax treatment varies. Interest on bonds from the Federal Home Loan Banks and the Federal Farm Credit Banks is exempt from state and local tax, like Treasuries. Interest on Fannie Mae, Freddie Mac and Ginnie Mae securities is taxable at the federal, state and local levels.

Neither Treasuries nor agencies offer the federal tax exemption of most municipal bonds. Exam questions often test whether candidates can place each issuer correctly, so the tax rules are worth learning issuer by issuer.

Worked Example: Comparing Yields After State Tax

A client in a state with a 6 percent income tax is choosing between a Treasury note yielding 4.30 percent and a Fannie Mae bond of the same maturity yielding 4.50 percent. At first glance, the agency bond pays more. For simplicity, ignore any federal deduction for state taxes.

Step one: identify which bond is exempt from state tax. The Treasury is exempt, and the Fannie Mae bond is not. Step two: convert the Treasury yield into its state-tax-equivalent yield by dividing it by one minus the state tax rate.

Step three: calculate it. 4.30 percent divided by 0.94 gives about 4.57 percent. Step four: compare. The Fannie Mae bond would need to yield more than 4.57 percent to match the Treasury after state tax, so at 4.50 percent the Treasury is the better choice for this client.

Credit Risk, Interest Rate Risk and Reinvestment Risk

Both Treasuries and agency bonds carry very little credit risk, and both are treated as high quality investment grade holdings. Their main risk is the same as for any fixed-rate bond: interest rate risk. When market rates rise, their prices fall, and long-dated Treasury bonds are among the most rate-sensitive securities an investor can own.

Our article on why bond prices fall when interest rates rise explains the relationship. Investors reduce it by choosing shorter maturities or building a ladder of bonds that mature in different years.

Callable agency bonds add reinvestment risk. Agency mortgage-backed securities, such as Ginnie Mae pass-throughs, add prepayment risk, because homeowners repay their mortgages early when rates fall, returning principal to investors at the worst moment.

Study With FRC

Government securities appear across the exam, from yield calculations to tax treatment and portfolio recommendations. Our Series 65 course takes you through each issuer, each tax rule and each risk in the order the exam tests them.

Consider studying with FRC at every stage of your licensing. Explore our USA exam courses, covering the SIE, Series 7, Series 63 and Series 65.

To take advantage of the membership, explore FRC Professional Membership, which gives you a verified Digital Profile that shows employers your real-time course progress, together with the Video Resume. Current offers are on our membership deals page.

How Each Is Issued and Bought

Treasuries are sold at scheduled public auctions. Investors can place competitive bids, naming the yield they will accept, or non-competitive bids, agreeing to accept whatever yield the auction sets. Individuals can buy directly through TreasuryDirect in amounts as small as $100, or through a brokerage account.

Agency bonds are sold through dealers rather than public auctions. The issuer works with a group of dealers that distribute new bonds to investors, and the bonds then trade over the counter in the secondary market.

The difference affects price transparency. Treasury auction results and market prices are published widely and instantly, while agency prices, though readily available to professionals, are less visible to individual investors. An adviser buying agency bonds for a client should check the markup and compare quotes.

Short-Term Cousins: T-Bills and Agency Discount Notes

At the short end, Treasury bills have an agency counterpart. Government-sponsored enterprises issue discount notes, short-term securities sold below face value and repaid at par, exactly as bills are.

Both are used by money market funds and corporate treasurers to hold cash safely for days or months. Discount notes usually yield slightly more than bills of the same maturity, for the same reasons the agency spread exists further out the curve.

For inflation protection, only the Treasury offers a dedicated solution. Treasury Inflation-Protected Securities adjust their principal with the consumer price index, protecting the investor’s real interest rate and reducing inflation risk, a feature with no direct equivalent in the agency market.

Who Buys Treasuries and Who Buys Agencies

Treasuries are held by almost every type of investor: central banks, pension funds, insurers, banks, money market funds and individuals. They are the default home for cash that must be safe and available, and they are the main collateral in the financial system.

Agency bonds appeal to investors who want near-Treasury safety with a little more yield. Banks, insurance companies and bond funds are major holders, and individual investors often reach them through mutual funds or exchange-traded funds that track the government bond market.

Treasuries can also be stripped into separate principal and interest pieces, known as STRIPS, which trade as zero-coupon bonds. Investors use them to match a known future expense with a single payment at a set date.

The Memory Aid

Remember this line: Treasuries are guaranteed, agencies are assumed. The full faith and credit of the United States stands behind every Treasury, while most agency debt relies on the market’s assumption that the government would not let the issuer fail.

For tax treatment, remember that Treasuries escape state tax, as do the Federal Home Loan Banks and Farm Credit, while the mortgage agencies, Fannie, Freddie and Ginnie, are taxed everywhere.

For backing, remember the one exception among the agencies: Ginnie Mae is part of the government, so it alone carries the full faith and credit guarantee.

Exam Traps to Avoid

The first trap is assuming every agency bond is government guaranteed. Only Ginnie Mae and a few other true federal agencies carry the full faith and credit. Fannie Mae, Freddie Mac and the Federal Home Loan Banks do not, despite their close ties to the government.

The second trap is confusing tax exemptions. Treasury interest is exempt from state and local tax, not federal tax. A question that offers “exempt from federal income tax” as a feature of Treasuries is offering the wrong answer, since that exemption belongs to most municipal bonds.

The third trap is treating Ginnie Mae as tax-advantaged because it is government backed. Its guarantee is the strongest among the agencies, but its interest is taxable at every level. The fourth trap is overlooking call features: when a question asks which security carries reinvestment risk, a callable agency bond is a stronger answer than a non-callable Treasury.

A Client Scenario

A client living in a high-tax state wants a safe, liquid place to hold $200,000 that she may need within three years for a home purchase. She asks whether to buy Treasury notes or a slightly higher-yielding Fannie Mae bond.

The adviser walks through the comparison. The Treasury carries the full faith and credit of the government and is exempt from her state income tax, which raises its after-tax yield. It is not callable, so she knows exactly when the principal returns, and it can be sold quickly in the deepest market available if her plans change.

The Fannie Mae bond yields a little more before tax, but its interest is fully taxable by her state, it may be callable and it is slightly less liquid. Given her need for safety, liquidity and certainty of timing, the Treasury notes are the more suitable choice. The recommendation reflects her objectives, time horizon and tax position, the core of every suitability assessment.

The Dictionary as a Video Library

The FRC dictionary works as a study tool, not just a glossary. Every entry pairs a written explanation with deep-dive video, on-page quizzes and interactive flash cards, so you can read, watch and test yourself without leaving the page.

Open a rule to see the same depth. Our FINRA rules quick reference on duties and conflicts sets out the conduct rules behind every recommendation, including government securities. Use the FRC dictionary to open each term in this article, from agency bond to zero-coupon bond, as its own explanation, video and quiz.

Practice Questions to Test Yourself

Question one: Which of the following carries the full faith and credit of the United States government: Fannie Mae, Freddie Mac, Ginnie Mae or the Federal Home Loan Banks? Ginnie Mae, because it is a federal government agency. The others are government-sponsored enterprises with implied backing only.

Question two: Interest on Treasury notes is exempt from which taxes? State and local income taxes. It remains subject to federal income tax.

Question three: Why do agency bonds typically yield more than Treasuries of the same maturity? Because they carry slightly more credit risk from implied rather than explicit backing, slightly less liquidity and, in many cases, call risk. The agency spread compensates for all three.

Question four: Interest on which agency’s bonds is exempt from state and local income tax: Fannie Mae or the Federal Home Loan Banks? The Federal Home Loan Banks. Fannie Mae interest is taxable at the federal, state and local levels.

Question five: A client in a 5 percent state tax bracket compares a Treasury yielding 4.0 percent with a fully taxable agency bond yielding 4.15 percent. Which pays more after state tax, ignoring any federal deduction? The Treasury. Its state-tax-equivalent yield is 4.0 divided by 0.95, or about 4.21 percent, which beats the agency’s 4.15 percent.

Turn Knowledge Into Career Evidence

Government securities are the foundation of fixed income, treasury management, wealth management and banking roles. FRC’s Digital Profile puts your development in front of employers, showing the courses you are actively studying and the progress you have earned through assessed learning, verified by FRC.

A QR code on your resume takes a hiring manager straight to that profile, and the FRC Video Resume lets them hear you present yourself before the interview. A candidate who can explain the state tax advantage of Treasuries in plain language is demonstrating the client skill an advisory firm values most.

Candidates returning to the exam should note that the wait after a third failure drops from 180 days to 60 days for exam windows opened on or after January 4, 2027, as explained in our article on the Series 65 retake rule change.

Related Questions

Continue with Callable vs Non-Callable Bonds for the call features found on many agency bonds, and Investment Grade vs High Yield Bonds for the full credit spectrum.

For income alternatives with more credit risk, read Senior Loans vs High Yield Bonds, and for options topics in the same exam section, read What Is Rho in Option Pricing?

Key Points to Retain

Treasury securities carry the full faith and credit of the United States government, are exempt from state and local income tax and are almost never callable. Agency bonds come from federal agencies and government-sponsored enterprises, and only true agencies such as Ginnie Mae carry an explicit government guarantee.

Agency bonds yield slightly more than Treasuries to compensate for implied backing, lower liquidity and call risk. Federal Home Loan Bank and Farm Credit interest is state tax exempt, while Fannie Mae, Freddie Mac and Ginnie Mae interest is taxable at every level.

For the exam’s structure and requirements, see the Series 65 dictionary entry, and for the role the exam leads to, read our guide to what an investment advisor representative is.