Definition / Meaning of Coupon
A coupon is the periodic interest payment made to bondholders by the bond issuer. It represents the income that investors receive for lending money to the issuer, such as a government or corporation. The term originates from physical bond certificates that used to have detachable coupons that investors would clip and redeem for interest payments.
The coupon rate is the annual interest rate stated on a bond, expressed as a percentage of the bond’s face value (also called par value). For example, a bond with a face value of $1,000 and a coupon rate of 5% pays $50 in interest per year, typically in semi-annual installments of $25 each. The coupon payment is calculated as (Face Value × Coupon Rate) / Number of Payments Per Year.
Fixed vs. Floating Coupons
Most bonds have a fixed coupon, meaning the interest rate remains constant throughout the bond’s life. However, some bonds have floating-rate coupons that adjust periodically based on a benchmark interest rate, such as the London Interbank Offered Rate (LIBOR) or the Secured Overnight Financing Rate (SOFR). Floating-rate coupons help protect investors from rising interest rates.
Zero-Coupon Bonds
Zero-coupon bonds do not make periodic coupon payments. Instead, they are issued at a deep discount to face value and mature at par. The investor’s return comes from the difference between the purchase price and the face value. For instance, a zero-coupon bond with a face value of $1,000 might be bought for $800 and redeemed for $1,000 at maturity, effectively earning $200 in interest.
Coupon and Bond Pricing
The coupon rate directly influences a bond’s market price. When a bond’s coupon rate is higher than current market interest rates, the bond typically trades at a premium (above face value). When the coupon rate is lower, the bond trades at a discount (below face value). This relationship is fundamental to bond investing. The yield to maturity (YTM) is the total return an investor can expect if they hold the bond until maturity, accounting for both coupon payments and any capital gain or loss from buying at a discount or premium.
Cumulative vs. Non-Cumulative Coupons
Some bonds, particularly preferred stock, may have cumulative coupons. If the issuer misses a coupon payment, it must make it up later before paying dividends to common shareholders. Non-cumulative coupons mean missed payments are forfeited. Most standard bonds have non-cumulative coupons, but deferred interest structures exist.
Tax Treatment of Coupon Income
Coupon payments are generally taxable as ordinary income at the federal level. However, municipal bonds often pay coupons that are exempt from federal income tax and sometimes state and local taxes. Investors should consider the after-tax yield when comparing bonds.
Importance to Investors
Coupons provide a predictable income stream, making bonds attractive for conservative investors and those seeking regular cash flow, such as retirees. The coupon rate also helps determine a bond’s duration and interest rate risk. Higher coupon bonds have lower duration, meaning their prices are less sensitive to interest rate changes. Understanding coupons is essential for evaluating fixed-income investments and building a diversified portfolio.