How to calculate an apy of a bond<br>Analyze the terms of a bond. The amount you invest is called the " face value " of the bond, while the interest rate is called the " coupon rate. " the maturity date is the date you receive repayment of the amount you invested plus the interest owed to you.
there is a way of calculating a apy of a bond. 
( z1 way :manner-of ( z2 calculate :ARG1 ( z3 bond ) ) )