The more unstable the economy becomes these days, the more people look for safe places to invest, and I think U.S. Treasury bonds could be the answer. Perhaps because people believe the U.S. will never collapse, Treasury bonds are truly treated as a flagship among safe assets. Even if interest rates are low, they can be cashed out at any time, and their good liquidity makes them attractive to investors.

To start, let’s briefly summarize what bonds are: basically, they are certificates through which an investor lends money to a borrower. If the government lacks operating funds, it issues Treasury bonds to borrow money from institutions or individuals and pays interest. The most actively traded product in the Treasury bond market is the U.S. 10-year note, which is mainly traded for investment purposes.

There are three broad types of U.S. Treasury bonds. T-bills with maturities under 1 year are short-term Treasuries with almost no risk and high liquidity. T-notes with maturities of 1 to 10 years are intermediate-term Treasuries. T-Bonds with maturities of 10 to 30 years are long-term Treasuries that provide fixed interest rates. During economic recessions, these stable Treasuries often become a core component of a diversified investment portfolio.

It’s important to understand bond interest rates and yields. A yield is basically the expected return when buying a bond divided by the purchase price. In the secondary market, bond prices change in real time depending on demand. When demand for Treasury bonds increases, prices rise and interest rates fall; conversely, when demand decreases, prices fall and interest rates rise. In other words, bond prices and interest rates move in opposite directions. This effectively reflects investors’ sentiment.

There are several reasons U.S. Treasury bond investing is attractive. First, because the U.S. government guarantees repayment, they are regarded as the safest investment vehicle. Second, a fixed interest rate determined at issuance applies, and interest is typically paid every 6 months, ensuring predictable returns. Third, U.S. Treasury bonds are actively traded in the bond market, so liquidity is high. You can hold them until maturity, or you can sell them easily when needed. Fourth, Treasury bond interest is subject to federal tax, but it is exempt from state and local taxes, which may increase after-tax returns.

However, there are also risks. If interest rates rise, the value of existing Treasury bonds falls, and losses may occur when you have to sell before maturity. If inflation exceeds Treasury bond interest rates, the value of real returns can decrease. For overseas investors, the impact of exchange-rate fluctuations on returns cannot be ignored either—if the dollar weakens, the value of interest and principal when converted into Korean won may drop. Of course, the U.S. government’s credit risk is very low, but it theoretically still exists.

How to buy Treasury bonds depends on your investment goals and risk tolerance. The first method is direct bond purchase. Through the TreasuryDirect website, you can buy and trade Treasury bonds directly with the U.S. Department of the Treasury, or you can purchase them in the secondary market through securities firms. The advantage of direct ownership is that you have control over trading decisions and there are no management fees. However, TreasuryDirect limits the maximum individual investment amount to 10,000 dollars, and diversification requires substantial capital and management.

The second method is bond funds. These are mutual funds that pool money from multiple investors to buy a diversified portfolio of bonds, and they are managed by professional fund managers. This can reduce the risk associated with a single bond, and it also allows you to invest in a variety of bonds with a smaller amount. However, management fees are charged, and you do not have direct control over individual bonds.

The third option is a bond index fund or an ETF. This is a fund that tracks a specific bond index. Compared with actively managed bond funds, it is often lower cost, and because it can be bought and sold on an exchange like a stock, it offers high flexibility. However, it can be affected by market volatility, and differences versus the index may occur due to management fees and trading costs.

For Korean investors, it’s generally a good idea to consider both Korean Treasury bonds and U.S. Treasury bonds. Investing in both markets allows diversification across regions and currencies, helping reduce risk exposure by country. If you hold bonds denominated in Korean won and in dollars, you can hedge currency fluctuation risk to some extent. Because the business cycles of Korea and the U.S. do not always match, a downturn in one economy can be offset by growth in the other.

From the perspective of optimizing yield, you can also use the yield curves of both countries. For example, if Korean Treasury bonds offer higher yields, you can keep U.S. Treasury bonds as a core position while increasing the weight allocated to Korean Treasury bonds. When interest-rate differentials between the two widen, arbitrage opportunities may arise.

Currency hedging is also important because changes in the dollar exchange rate affect returns when converting into Korean won. You can use derivatives such as forward exchange contracts to fix the exchange rate, but this creates an opportunity cost that reduces overall returns. Another approach is to build positions where you hedge only part of the investment’s currency risk and leave the rest unhedged. This helps balance the cost of reducing currency risk with the potential upside from favorable exchange-rate movements.

It’s also helpful to know the concept of duration. Duration is a measure of a bond’s sensitivity to changes in interest rates, and it represents the average maturity time weighted by when cash flows are received. If your long-term goal is principal preservation, a portfolio made up of U.S. Treasuries with longer maturities is generally more stable. Conversely, including bonds with shorter durations can reduce sensitivity to interest-rate changes.

Taxes cannot be overlooked either. U.S. Treasury bond interest income is subject to U.S. federal tax, but it may also be taxed in Korea. Fortunately, Korea and the U.S. have a double taxation avoidance agreement in place, which helps prevent the same income from being taxed twice. It’s advisable to consult a tax professional.

For example, consider a balanced portfolio made up of 50% Korean Treasury bonds and 50% U.S. Treasury bonds. Such a portfolio is designed to achieve both principal preservation and income generation at the same time. It reduces dependence on a specific country’s economy, thereby lowering risk. The portfolio’s value measured in Korean won can fluctuate with exchange rates. During periods when the U.S. dollar is strong, the unhedged portion of U.S. Treasury bonds tends to produce higher returns. Conversely, when the dollar weakens, the hedged portion offsets foreign exchange losses.

In conclusion, investing in U.S. Treasury bonds offers stable opportunities for both individual and institutional investors. However, it’s important to properly understand risks related to interest rates, inflation, and currency. If you’re a Korean investor, it’s best to learn about various ways to buy Treasury bonds and choose the approach that fits your circumstances and risk tolerance—direct purchases, bond funds, or ETFs. By investing across both U.S. Treasury bonds and Korean Treasury bonds, you can enhance portfolio diversification and improve income stability.