What Treasury Bonds Actually Offer and When They Make Sense

Treasury bonds are loans you make to the U.S. government, and whether they're right for you depends on what you need the money to do and how long you can leave it alone

A Treasury bond is a debt security issued by the U.S. Department of the Treasury. You give the government money, they promise to pay you interest on a fixed schedule, and they return your principal on a specific date. The government backs these bonds with its full taxing power, which is why they carry virtually no default risk—but that safety comes with a trade-off: the interest rates are lower than what you'd earn from corporate bonds, stocks, or other investments that carry more risk.

Whether Treasury bonds belong in your portfolio is not a yes-or-no question. It depends on three things: how much risk you can tolerate, how long you can keep your money locked up, and what returns you need to meet your goals. A retiree living on investment income has a different answer than a 35-year-old saving for a house down payment in three years.

Key Takeaways

• Treasury bonds are backed by the U.S. government and carry almost no risk of default, but their interest rates are lower than stocks or corporate bonds.
• The longer the bond's maturity—from a few months to 30 years—the higher the interest rate, but the more your bond's value will drop if interest rates rise.
• Interest from Treasury bonds is taxed as ordinary income at the federal level, but is exempt from state and local income tax.
• Treasury bonds work best as a stabilizing piece of a larger portfolio, not as your main investment, because their long-term returns typically lag inflation.
• You can buy Treasury bonds directly from TreasuryDirect.gov with no fees, or through a brokerage account alongside other investments.

How Treasury bond interest rates and maturity work together

The U.S. Treasury issues bonds with different maturity dates: 20-year bonds and 30-year bonds are what most people mean when they say "Treasury bond," though the Treasury also sells shorter-term notes and bills. The longer you agree to lend your money, the higher the interest rate the government pays you—this is called the yield curve. A 30-year Treasury bond pays more interest than a 10-year note because you're giving up access to your money for twice as long.

The catch is that if interest rates rise after you buy a bond, the bond's market value falls. If you bought a 30-year Treasury bond paying 3% and interest rates climb to 5%, your bond is now worth less because new bonds pay more. If you need to sell before maturity, you take a loss. If you hold it to maturity, you get your full principal back—but you've locked in a lower return while rates climbed. This is called interest rate risk, and it's the main reason long-term bonds are riskier than they first appear.

What you actually earn after taxes and inflation

Interest from Treasury bonds is taxed as ordinary income at the federal level, meaning it's added to your other income and taxed at your marginal rate. However, Treasury bond interest is exempt from state and local income tax, which can save you money if you live in a high-tax state like California or New York. A 30-year Treasury bond currently yields around 4% to 4.5% (this varies daily based on market conditions), but after federal taxes at a 24% rate, your real return is closer to 3%.

Then subtract inflation. If inflation runs 2.5% to 3% per year, your real purchasing power gain is nearly flat. Over 30 years, that compounds into a meaningful difference. A Treasury bond is not a wealth-building tool—it's a wealth-preservation tool. You're paying for safety and predictability, not growth.

When Treasury bonds fit into a portfolio

Treasury bonds serve a specific role: they reduce volatility and provide a predictable income stream. If you have a large stock portfolio and the market drops 20%, your Treasury bonds usually hold steady or even gain value (because falling stock prices often push interest rates down, which raises bond prices). This negative correlation is why financial advisors often recommend holding some bonds alongside stocks.

A common rule of thumb is to hold bonds equal to your age as a percentage of your portfolio—a 50-year-old might hold 50% bonds and 50% stocks. But this is a starting point, not a rule. Someone who needs money in two years should hold mostly short-term bonds or cash. Someone who won't touch their portfolio for 20 years can afford to hold mostly stocks and use bonds only for stability.

Treasury bonds also work well as a ladder—buying multiple bonds that mature in different years (one in 5 years, one in 10, one in 20). As each bond matures, you get your principal back and can reinvest it at current rates. This spreads out your interest rate risk and ensures you always have some money maturing soon.

How to buy Treasury bonds directly or through a brokerage

You can buy Treasury bonds in two ways. TreasuryDirect is the U.S. government's own platform (treasurydirect.gov). You create an account, fund it from a bank account, and bid on bonds at Treasury auctions held regularly throughout the year. There are no fees, no middleman, and you own the bonds outright. The downside is that TreasuryDirect is clunky to use and you cannot sell bonds before maturity—you can only hold them or let them mature.

A brokerage account (through Fidelity, Vanguard, Schwab, or another firm) lets you buy Treasury bonds on the secondary market—from other investors who want to sell. You pay a small commission, but you can sell anytime and you can hold Treasury bonds alongside stocks, mutual funds, and other investments in one place. For most people, a brokerage is easier.

You can also own Treasury bonds indirectly through a bond mutual fund or exchange-traded fund (ETF). These funds hold many Treasury bonds and let you invest a small amount. The trade-off is that you pay an annual fee (usually 0.03% to 0.20% per year for Treasury-focused funds) and the fund's value fluctuates daily, so you don't have the certainty of holding a bond to maturity.

Treasury bonds versus other fixed-income options

Corporate bonds pay higher interest than Treasury bonds because companies are riskier than the U.S. government. A bond from a stable company like Johnson & Johnson might yield 5% while a 30-year Treasury yields 4.5%. That extra 0.5% sounds small, but over 30 years it compounds. The risk is that the company could struggle and default on the bond, though this is rare for investment-grade corporate bonds.

High-yield savings accounts and money market funds currently pay 4% to 5% with no maturity date and no interest rate risk. Your money is liquid—you can withdraw it anytime. The downside is that these rates are set by banks and can fall if the Federal Reserve cuts interest rates. Treasury bonds lock in a rate for decades.

I Bonds (Series I Savings Bonds) are another Treasury product. They pay a rate that adjusts every six months based on inflation, so your purchasing power is protected. But you cannot cash them in for one year, and if you sell before five years, you lose the last three months of interest. They're better than Treasury bonds if you're worried about inflation, but worse if you need access to your money.

The real reason to own Treasury bonds

Treasury bonds are not an investment you buy expecting to get rich. They're an investment you buy to sleep at night. If you own a volatile stock portfolio and a market crash would force you to sell stocks at the worst time, Treasury bonds give you a cushion. If you're retired and need steady income, Treasury bonds provide it without the stress of stock prices swinging 20% in a year.

The math is simple: Treasury bonds pay less than stocks over long periods, but they also lose less in downturns. The question is not "Will Treasury bonds make me wealthy?" but "How much stability do I need, and what am I willing to give up in returns to get it?"

Frequently Asked Questions

Can I lose money on a Treasury bond if I hold it to maturity?

No. If you hold a Treasury bond until its maturity date, you get your full principal back plus all the interest owed. The only way to lose money is to sell before maturity when interest rates have risen and the bond's market value has fallen.

What's the difference between a Treasury note and a Treasury bond?

Treasury notes mature in 2 to 10 years, while Treasury bonds mature in 20 or 30 years. Longer maturities pay higher interest rates but carry more interest rate risk. Treasury bills mature in less than one year and pay the lowest rates.

Should I buy Treasury bonds if I'm in my 30s and won't need the money for decades?

Probably not as your main investment. At 30, you have time to ride out stock market downturns, so stocks historically deliver better long-term returns. Treasury bonds make more sense as a small stabilizing piece—perhaps 10% to 20% of your portfolio—not as your core holding.

Are Treasury bonds a good hedge against stock market crashes?

Yes, often. When stock prices fall sharply, investors typically move money into Treasury bonds, pushing bond prices up. This negative correlation means your bonds gain value when stocks lose it, reducing your overall portfolio loss. This is the main reason to own them.

Do I have to report Treasury bond interest on my taxes?

Yes. Treasury bond interest is taxable as ordinary income at the federal level. You'll receive a Form 1099-INT from your broker or TreasuryDirect showing the interest earned. State and local income tax does not apply to Treasury bond interest.