Fixed Income

What is Coupon Rate?

Definition

The coupon rate is the annual interest rate paid by a bond's issuer relative to the bond's face value. A bond with a $1,000 face value and 5% coupon pays $50 per year in interest, typically in semiannual installments.

Detailed Explanation

The coupon rate is fixed at issuance and does not change over the life of the bond (for fixed-rate bonds). It determines the periodic cash payments the bondholder receives. Most US bonds pay coupons semiannually.

The coupon rate reflects the prevailing interest rates and credit quality at the time of issuance. Higher-quality issuers (US government, AAA-rated corporations) can issue bonds at lower coupon rates. Lower-quality issuers must offer higher coupons to attract investors.

Coupon rate should not be confused with yield. If a bond trades at par, the coupon rate equals the current yield. But bonds rarely trade exactly at par—as market interest rates change, bond prices adjust, causing the current yield and YTM to differ from the coupon rate.

Zero-coupon bonds pay no periodic interest. Instead, they are sold at a deep discount to face value, and the investor's return comes entirely from the price appreciation to par at maturity. Treasury bills and STRIPS are examples of zero-coupon instruments.

Formula

Annual Coupon Payment = Face Value x Coupon Rate

Example

A corporate bond has a $1,000 face value with a 6% coupon rate. It pays $60 per year ($30 every six months). If market rates fall to 4%, the bond's price rises above par because its 6% coupon is more attractive than new 4% bonds.

Frequently Asked Questions

Can the coupon rate change?

For fixed-rate bonds, no—the coupon is set at issuance. Floating-rate bonds (also called variable-rate) have coupons that adjust periodically based on a reference rate like SOFR. Step-up bonds have coupons that increase at predetermined intervals.

What is a zero-coupon bond?

A zero-coupon bond pays no periodic interest. It is sold at a discount to face value and returns the full face value at maturity. The return comes entirely from price appreciation. Treasury bills and STRIPS are common examples.

Does a higher coupon mean a better investment?

Not necessarily. Higher coupons often reflect higher credit risk. A 7% corporate bond may have more default risk than a 3% Treasury. The appropriate comparison is yield to maturity, which accounts for price, coupons, and risk.

Related Terms

Credit Rating

A credit rating is an assessment by a rating agency (S&P, Moody's, Fitch) of a borrower's ability to repay debt. Ratings range from AAA (highest quality) to D (default), with investment grade (BBB- or above) and speculative grade (BB+ or below) as the key dividing line.

Bond

A bond is a fixed-income security where the investor lends money to an issuer (government or corporation) for a defined period at a fixed or variable interest rate. Bonds pay periodic interest (coupons) and return the principal at maturity.

Yield to Maturity (YTM)

Yield to maturity is the total return anticipated on a bond if held until it matures, expressed as an annual percentage. It accounts for the bond's current price, coupon payments, face value, and time to maturity, making it the most comprehensive bond yield measure.

Duration

Duration measures a bond's sensitivity to interest rate changes, expressed in years. A duration of 5 means the bond's price will change approximately 5% for every 1% change in interest rates. Longer duration means more interest rate risk.

See It in Action

Apple

Microsoft

Johnson & Johnson

Berkshire Hathaway

Disclaimer: The information on this page is provided for educational and informational purposes only and does not constitute investment advice. AI-generated analysis may contain errors or inaccuracies. Always conduct your own research and consult a qualified financial advisor before making investment decisions.