Bond Yields Explainer
A bond yield expresses the return an investor may earn from a bond relative to the price paid. It is related to, but different from, the coupon rate. The coupon is the stated interest payment based on face value, while yield changes as the bond’s market price changes. That distinction is central to understanding fixed-income markets.
Current yield divides annual coupon payments by the bond’s market price. Yield to maturity goes further by estimating the annualized return if the investor holds the bond until it matures and receives scheduled payments, assuming payments can be reinvested at the same rate. Yield to call applies a similar calculation when the issuer can redeem the bond early.
Bond prices and yields generally move in opposite directions. When new bonds offer higher market rates, an older bond with a lower coupon becomes less attractive unless its price falls. When market rates decline, an older higher coupon can command a premium. Longer maturities and lower coupons usually make prices more sensitive to rate changes, a relationship summarized by duration.
A quoted yield is not a guaranteed outcome. Credit risk, inflation, liquidity, taxes, call features, and transaction costs all matter. A high yield may compensate for a meaningful chance of loss or early redemption rather than represent a bargain. Investors compare yields with similar maturities and credit quality, review the bond’s terms, and consider whether the calculation assumes an unrealistic reinvestment rate.
The coupon rate is set from face value and determines scheduled interest. Current yield divides those annual payments by today’s market price.
Buying below face value raises current yield above the coupon rate; buying at a premium lowers it. Current yield ignores the gain or loss at maturity.
Yield to maturity estimates the annualized return from coupon payments and the difference between purchase price and repayment at maturity.
It is a model, not a promise. The calculation assumes scheduled payments occur and coupons can be reinvested at the same yield.
A bond with fixed payments must change price to compete when prevailing interest rates move. Higher market rates generally push existing prices down.
Interest-rate sensitivity differs. Time to maturity, coupon, embedded options, and credit changes can make two bonds react very differently.
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