Bond Coupon Rates Explainer
A bond’s coupon rate is the annual interest rate used to calculate its contractual interest payments, usually as a percentage of face value. A fixed-rate bond with a five percent coupon and a one-thousand-dollar face value normally promises fifty dollars of annual interest, often split into two payments.
Coupon rate is set when the bond is issued and generally does not change for fixed-rate debt. Floating-rate bonds reset according to a reference rate plus a stated spread, while zero-coupon bonds make no periodic coupon. Payment frequency, day-count conventions, reset dates, and unusual first or final periods affect the actual cash schedule.
Coupon is not the same as yield. An investor who buys the bond above face value earns less than the coupon rate if held to maturity, while a discount purchase can earn more, assuming payment. Current yield divides annual coupon by market price but ignores maturity value, timing, calls, and reinvestment.
A high coupon may reflect an older rate environment or greater credit risk rather than a superior bargain. Investors should compare market price, yield to maturity or call, credit quality, duration, taxes, and embedded options. The coupon describes promised cash flow; total return depends on what is paid and what the investor paid.
The stated rate is applied to par, not today’s market price.
Payment frequency determines each installment.
Fixed coupons stay constant while floating coupons reset by formula.
Zero-coupon debt pays no periodic interest.
Purchase price, maturity value, timing, and credit affect return.
A large coupon can still accompany a poor investment outcome.
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