Zero-Coupon Bonds: Definition, Formula, Example, Advantages, and ... Mr. Tee is looking to purchase a zero-coupon bond that has a face value of $50 and has 5 years till maturity. The interest rate on the bond is 2% and will be compounded annually. In the scenario above, the face value of the bond is $50. However, to calculate the price that needs to be paid for the bond today, the following formula is used: