Treasury Bills vs. Bonds: Where to Invest Now

Investors are facing a fascinating choice in today’s shifting interest rate environment. With the Federal Reserve constantly adjusting its monetary policy based on inflation data, deciding between short-term Treasury bills and long-term Treasury bonds is a top priority. If you want a secure place to park your cash or lock in a steady yield, understanding the exact differences between these two government-backed assets is the first step.

Understanding the Core Differences

Before deciding where to put your money, you need to know exactly what you are buying. The United States Department of the Treasury issues different types of debt to fund government operations. The primary difference between these assets is the time it takes for them to mature.

Treasury Bills (T-Bills) Treasury bills are short-term investments. They mature in one year or less. The government issues them in specific terms of 4, 8, 13, 17, 26, 42, and 52 weeks. Unlike other bonds, T-bills do not pay regular interest payments. Instead, you buy them at a discount to their face value. When the bill matures, the government pays you the full face value. The difference between what you paid and what you receive is your interest earned.

Treasury Bonds (T-Bonds) Treasury bonds are the longest-term debt issued by the government. They mature in either 20 or 30 years. Because you are locking your money up for decades, T-bonds pay a fixed rate of interest every six months until they mature.

For context, the government also issues Treasury Notes. These sit right in the middle, with maturities ranging from 2 to 10 years.

The Shifting Rate Climate and the Inverted Yield Curve

Normally, investors demand a higher interest rate to lock their money up for 30 years compared to just a few months. However, the current financial market is experiencing an inverted yield curve. This means short-term debt is actually paying a higher interest rate than long-term debt.

The Federal Reserve aggressively raised its benchmark interest rate to fight inflation over the past few years. This pushed short-term T-bill yields very high. Recently, a 3-month T-bill could easily yield over 5.2%. At the same time, a 30-year T-bond might only yield around 4.3%.

This happens because bond investors look ahead. The market expects the Federal Reserve to cut interest rates over the next several years as inflation cools down. Therefore, long-term bonds are pricing in those future rate cuts today.

The Case for Short-Term T-Bills

Treasury bills are incredibly popular right now, and for good reason. They offer a unique combination of safety and high returns.

Capital Preservation: Since the maturity date is less than a year away, the price of a T-bill barely fluctuates. If you need your money in six months for a home down payment, a 26-week T-bill ensures your principal is safe.
High Current Yields: Getting over 5% on a risk-free government asset is historically attractive.
The Downside (Reinvestment Risk): The biggest risk with T-bills today is reinvestment risk. If you buy a 6-month T-bill today, you will get a great rate. But when that bill matures six months from now, the Federal Reserve might have cut rates. You will then have to reinvest your cash at a much lower percentage, such as 3.5% or 4%.

The Case for Long-Term Treasury Bonds

Investing in 20-year or 30-year Treasury bonds requires a completely different strategy. You are not just looking for a temporary place to store cash. You are making a bet on the long-term direction of the economy.

Locking in Yield: If you buy a 30-year T-bond at 4.3%, you are guaranteed that exact yield for three decades, regardless of what the Federal Reserve does. If interest rates drop back down to 1% or 2% in the coming years, your 4.3% bond will look incredibly valuable.
Capital Appreciation Potential: Bond prices move in the opposite direction of interest rates. If you hold a bond paying 4.3% and new bonds are only issued at 2%, other investors will pay a premium to buy your bond. You can sell it on the secondary market for a profit before the 30 years are up.
The Downside (Inflation and Interest Rate Risk): If inflation spikes again and the Fed raises rates to 6%, the value of your 4.3% bond will plummet on the secondary market. Additionally, a fixed payment over 30 years loses its purchasing power if inflation remains higher than expected.

How to Buy Treasuries

You have a few different options for adding Treasuries to your portfolio.

The most direct route is through TreasuryDirect.gov, which is the official portal of the U.S. government. You can open an account and buy newly issued bills and bonds in increments of $100. This is a great option if you plan to hold the asset until maturity.

If you think you might need to sell your bonds early, using a major brokerage is a better choice. Firms like Charles Schwab, Fidelity, and Vanguard allow you to buy new Treasury issues at auction without a fee. More importantly, they give you access to the secondary market where you can sell your holdings at any time during regular trading hours.

You can also use Exchange-Traded Funds (ETFs) for maximum convenience. For short-term exposure, the iShares 0-3 Month Treasury Bond ETF (ticker SGOV) holds a rolling portfolio of short-term bills. For long-term exposure, the iShares 20+ Year Treasury Bond ETF (ticker TLT) provides an easy way to trade long-term bonds.

A Crucial Tax Advantage

When comparing Treasuries to high-yield savings accounts or Certificates of Deposit (CDs), you must factor in taxes. Interest earned from all U.S. Treasury securities is subject to federal income tax, but it is completely exempt from state and local taxes.

If you live in a state with high income taxes like California, New York, or New Jersey, this exemption significantly boosts your actual take-home return. A 5% yield on a T-bill often puts more money in your pocket than a 5% yield from a bank CD once tax season arrives.

Frequently Asked Questions

What is the minimum investment required for Treasury bills and bonds? If you purchase directly through TreasuryDirect.gov, the minimum investment for both T-bills and T-bonds is $100. Most major brokerages like Fidelity or Charles Schwab require a minimum of $1,000 for secondary market purchases.

Can I lose money on a Treasury bond? If you hold a Treasury bill or bond until it matures, you will not lose your principal (assuming the U.S. government does not default). However, if you buy a 30-year Treasury bond and need to sell it on the secondary market before it matures, you could lose money if interest rates have risen since you bought it.

How do I decide between a T-bill and a T-bond right now? The choice depends entirely on your time horizon. If you need the money within the next year, stick to short-term T-bills. If you want to guarantee a specific income stream for retirement over the next couple of decades, long-term T-bonds are the appropriate tool.