A bond's coupon rate is its stated annual interest percentage on par value, used to calculate contractual coupon payments.
Coupon rate is a bond’s stated annual interest rate, expressed as a percentage of face or par value. It determines the bond’s contractual coupon payments, but it does not by itself determine the investor’s market return.
For a plain fixed-rate bond:
If a bond has $1,000 par value and pays $50 per year, its coupon rate is 5%. If the bond pays semiannually, each coupon payment is $25.
| Measure | Based On | What It Answers | Main Limitation |
|---|---|---|---|
| Coupon rate | Annual coupon divided by par value | What cash interest does the bond promise? | Ignores market price. |
| Current yield | Annual coupon divided by current market price | What income rate does today’s price imply? | Ignores maturity value and reinvestment. |
| Yield to maturity | Price and all promised cash flows through maturity | What return is implied if held to maturity and payments occur as expected? | Assumes no default and depends on reinvestment and timing assumptions. |
| Yield to call | Price and cash flows through an assumed call date | What return is implied if a callable bond is redeemed early? | Applies only if the call scenario occurs. |
Suppose two bonds each have a $1,000 par value and a 5% coupon rate. Both promise $50 of annual coupon interest. If Bond A trades at $1,000 and Bond B trades at $920, the coupon rate is still 5% for both. The market yield differs because the purchase price differs.
Coupon rate helps explain income timing, accrued interest, premium and discount pricing, and reinvestment exposure. It also affects a bond’s sensitivity to market yields because higher-coupon bonds return more cash earlier than otherwise similar lower-coupon bonds.
The coupon rate is only one input. Credit quality, maturity date, call features, tax treatment, liquidity, and purchase price all matter before drawing an investment conclusion. This page is educational and is not personalized investment advice.