What Is Bonds?
A bond is a loan you make to a government or corporation in exchange for regular interest payments. Learn how bonds work, types of bonds, and their role in a portfolio.
Definition
A bond is essentially a loan. When you buy a bond, you are lending money to a government, municipality, or corporation for a fixed period of time. In return, the borrower (issuer) pays you regular interest (called the coupon) and returns your principal (the face value) when the bond matures. Bonds are classified as "fixed income" because they provide predictable, regular income.
Bonds come in many varieties: U.S. Treasury bonds (backed by the federal government, considered the safest), municipal bonds (issued by states and cities, often tax-free), corporate bonds (issued by companies, higher yields but more risk), and high-yield (junk) bonds (issued by riskier companies, highest yields but highest default risk).
Bond prices and interest rates move in opposite directions. When interest rates rise, existing bond prices fall (because new bonds offer higher rates, making older bonds less attractive). When rates fall, existing bond prices rise. This inverse relationship is a fundamental concept in bond investing.
Real-World Example
You buy a 10-year U.S. Treasury bond with a face value of $10,000 and a 4% coupon rate. Every year, you receive $400 in interest (usually paid in two $200 installments). After 10 years, you get your $10,000 back. Your total return is $4,000 in interest plus your original $10,000 -- assuming you hold to maturity. If interest rates rise to 5% before your bond matures, your bond's market price would drop below $10,000 (but you still get full face value if you hold to maturity).
Why It Matters
Bonds serve as the ballast in a diversified portfolio. When stocks crash, bonds often hold steady or even rise in value, smoothing out portfolio volatility. For retirees, bonds provide predictable income. The classic "60/40 portfolio" (60% stocks, 40% bonds) has been a standard investment allocation for decades. Understanding bonds helps you build an age-appropriate asset allocation and manage risk as you approach retirement.
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Frequently Asked Questions
Are bonds safe investments?
U.S. Treasury bonds are considered among the safest investments in the world because they are backed by the U.S. government. Corporate bonds carry more risk -- the issuing company could default. In general, bonds are safer than stocks but offer lower long-term returns.
How do I buy bonds?
You can buy Treasury bonds directly from TreasuryDirect.gov, or purchase bond ETFs and mutual funds through any brokerage. Bond ETFs (like BND or AGG) are the easiest way for most investors to add bond exposure.
Why do bond prices fall when interest rates rise?
When new bonds are issued at higher rates, existing bonds with lower rates become less attractive. Investors will only buy them at a discount. If your bond pays 3% and new bonds pay 5%, your bond must be priced lower to attract buyers.
Should I own bonds in my portfolio?
Most financial advisors recommend some bond allocation, increasing as you age. A common rule of thumb is to hold your age as a percentage in bonds (e.g., 30% bonds at age 30), though this varies by risk tolerance and goals.
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