Zero-Coupon Bond - Definition, Formula, How It Works?
A zero-coupon bond, also known as a discount bond, is a type of financial instrument where the investor purchases the bond at a price below its face value (or par value) and receives the face value amount at maturity. Unlike traditional bonds that pay periodic interest (coupons) to the bondholder, zero-coupon bonds do not make regular interest payments. Instead, they are typically issued at a discount to their face value and redeemed at par when they mature.
Characteristics of Zero-Coupon Bonds:
No Interest Payments:
Zero-coupon bonds do not pay interest periodically like traditional bonds. Instead, they are sold at a discount to their face value, and the investor earns a return through the capital appreciation as the bond approaches maturity.
Maturity Value:
The face value (or par value) of the bond is paid to the bondholder at maturity. This amount represents the original investment plus the interest that has accrued over the life of the bond.
Yield:
The yield on a zero-coupon bond is the rate of return earned by the investor from purchasing the bond at a discount to its face value and holding it until maturity. The yield is typically calculated using the following formula:
Yield=(Face ValueCurrent Price)1Years to Maturity−1\text{Yield} = \left( \frac{\text{Face Value}}{\text{Current Price}} \right)^{\frac{1}{\text{Years to Maturity}}} - 1Yield=(Current PriceFace Value)Years to Maturity1−1
Where:
Face Value is the amount paid at maturity.
Current Price is the price paid to purchase the bond.
Years to Maturity is the remaining time until the bond matures.
Example of Zero-Coupon Bond:
Let's consider a zero-coupon bond with the following details:
- Face Value (FV): $1,000
- Current Price (CP): $800
- Years to Maturity (YTM): 5 years
Using the formula for yield calculation:
Yield=(1,000800)15−1\text{Yield} = \left( \frac{1,000}{800} \right)^{\frac{1}{5}} - 1Yield=(8001,000)51−1 Yield=(1.25)0.2−1\text{Yield} = \left( 1.25 \right)^{0.2} - 1Yield=(1.25)0.2−1 Yield≈0.0488 or 4.88%\text{Yield} \approx 0.0488 \text{ or } 4.88\%Yield≈0.0488 or 4.88%
In this example, the investor purchases the zero-coupon bond for $800 and receives $1,000 at maturity, which results in a yield of approximately 4.88% per annum.
Advantages of Zero-Coupon Bonds:
Higher Potential Returns:
Zero-coupon bonds are often purchased at a deep discount to face value, providing the potential for higher returns compared to traditional bonds.
Fixed Maturity Date:
Investors know exactly when they will receive the principal amount, which can be beneficial for financial planning.
Price Stability:
Since zero-coupon bonds do not pay interest, their prices tend to be less affected by changes in interest rates compared to coupon-bearing bonds.
Risks of Zero-Coupon Bonds:
Interest Rate Risk:
Changes in interest rates can affect the market value of zero-coupon bonds, especially long-term ones, more significantly than traditional bonds.
Reinvestment Risk:
If interest rates decline, the investor may not be able to reinvest the proceeds from a maturing bond at the same rate of return.
Zero-coupon bonds are commonly used for long-term financial goals, such as retirement planning or funding for education, where the investor can benefit from the bond's appreciation over time.