What a Bond Means
A bond is essentially a loan that you, the investor, make to a borrower — usually a government or a company. In return, the borrower typically promises two things: periodic interest payments, known as the coupon, and repayment of the original loan amount, called the face value, on a set date known as the maturity date. Because the payment schedule is defined in advance, bonds are often described as fixed-income investments.
Bonds come in many varieties. Government bonds are issued by national or local governments, while corporate bonds are issued by companies raising money for operations or expansion. The income a bond generates relative to its price is expressed as its yield, which moves inversely to the bond's market price.
Why Bonds Matter
Bonds play a different role in a portfolio than stocks. They can provide a more predictable stream of income, and their prices often behave differently from share prices, which is why many investors use them for diversification. For someone with a shorter time horizon or lower risk tolerance, the relative stability of bond cash flows can be attractive. Bonds also matter at the level of the whole economy: bond yields influence borrowing costs, mortgage rates, and how markets price other assets.
A Simple Example
Imagine a company issues a bond with a face value of $1,000, a 5% annual coupon, and a 10-year maturity. If you buy that bond at issue and hold it, you would generally expect to receive $50 per year in interest and your $1,000 back after 10 years, assuming the issuer makes all payments as promised. If you sell before maturity, however, the price you get depends on market conditions — if prevailing interest rates have risen since you bought, your bond will usually be worth less on the open market.
Common Mistakes
- Assuming bonds cannot lose value. Bond prices fall when interest rates rise, and issuers can default. "Lower risk" does not mean "no risk."
- Ignoring credit quality. A high coupon often signals higher default risk. Checking an issuer's credit rating helps put the yield in context.
- Confusing coupon with yield. The coupon is fixed at issue; the yield depends on the price you actually pay for the bond.
- Overlooking inflation. A fixed payment stream loses purchasing power over time if inflation runs high.
- Forgetting costs. Trading costs and account fees can meaningfully reduce returns on lower-yielding bonds. A tool like the cost of trading calculator can help you think through the impact of costs in general.
What to Verify Before Acting
Before buying any bond or bond fund, verify the issuer's creditworthiness, the bond's maturity date, the current yield versus the coupon, and how the bond fits your own time horizon and goals. Check exactly what product you are buying — an individual bond, a bond ETF, or a bond index fund behave differently, especially around maturity. Confirm current terms, prices, and any account requirements directly with your chosen provider, since these change over time. Independent broker reviews and educational articles can help you research where and how bonds can be traded, but always confirm details from primary, up-to-date sources before committing money. This entry is a general educational draft and not a recommendation to buy or sell any security.