A bond is a loan with a market price
Buy a bond and you lend money to its issuer under specified terms. The issuer promises interest payments, repayment at maturity, or both. That is a different claim from owning a share of the issuer. The contract can stay the same while the price a later buyer pays changes.
Keep four amounts separate: face value, coupon payment, purchase price, and the money eventually repaid. The SEC’s bond overview explains the relationship between these terms and the risks behind them.
One coupon, three purchase prices
Imagine a bond with a $1,000 face value and a 4% annual coupon, paid once a year. Its annual coupon is $40. Buying it at a different market price does not rewrite that payment.
Current yield divides the annual coupon by the purchase price:
| Purchase price | Annual coupon | Current yield |
|---|---|---|
| $900 | $40 | $40 ÷ $900 ≈ 4.44% |
| $1,000 | $40 | $40 ÷ $1,000 = 4.00% |
| $1,100 | $40 | $40 ÷ $1,100 ≈ 3.64% |
The coupon rate remains 4% in every row because it is based on face value. The current yield changes because the buyer paid a different amount for the same annual payment.
Current yield leaves out the difference between purchase price and repayment. If the issuer repays the full $1,000 at maturity, the $900 buyer receives $100 more than the purchase price; the $1,100 buyer receives $100 less. Yield to maturity attempts to include both coupon payments and that gain or loss, under stated assumptions. Its calculation depends on the remaining time and payment schedule. None of the current-yield figures in the table is a guaranteed total return.
Why market price and yield move in opposite directions
Suppose new bonds with similar risk start paying 6% while the older bond still pays its 4% coupon. Buyers generally will not pay the same price for the older stream of payments. Its price tends to fall until its yield is more competitive. If prevailing rates fall, that older coupon may become more attractive and its price can rise.
The effect is stronger for some bonds than others. Longer maturity and lower coupon generally increase sensitivity to rate changes; duration is the concept used to describe that sensitivity. A bond nearing repayment has less time for a changed market rate to affect the value of its remaining payments. These are general patterns, not a promise about any particular bond price.
Selling before maturity makes the available market price part of your result. The issuer may still be making every payment while a sale produces a loss. Holding an individual bond to maturity reduces the need for that sale, but it does not erase the other risks.
A promised payment can still fail or lose buying power
A company may be unable to make payments. A high stated yield may compensate buyers for a higher probability or cost of default. The SEC’s corporate-bond bulletin explains why the issuer and its credit risk belong beside the interest rate in a comparison.
Some bonds can be called early under their terms. The issuer may refinance and repay the bond, leaving the investor to reinvest at the rates then available. A thin market can also make a bond difficult to sell at the expected price.
Inflation creates another risk even when the issuer pays in full. Every $40 coupon can arrive yet buy less over time. Treasury securities, municipal bonds, and corporate bonds differ in issuer, tax treatment, and credit characteristics. “Bond” alone does not describe that whole risk profile.
A bond fund is a different holding
A bond fund continually holds or replaces securities, and its share price can move. An investor does not usually have one personal maturity date on which the fund promises to return a fixed face value. Describing a bond ETF’s published yield as a guaranteed bank interest rate would hide that difference.
Compare the actual cash flows and rights: an individual bond’s payment schedule and repayment terms, or a fund’s holdings, costs, and share-price exposure. Our portfolio-income explanation separates a quoted yield from a spending plan.
Before a decision, identify the issuer, maturity date, coupon schedule, current price, yield measure, call features, fees, and whether you may need to sell early. That list gives each percentage a job. The coupon describes the contract; the price describes what you pay; a yield measure describes a particular calculation. Keeping them separate makes both the return and its limits easier to see.
