Final answer:
When the market interest rate rises to 9% over the initial 6% for the 10-year bond, you would expect to pay less than the face value of the bond. To calculate the maximum price, you discount the bond's expected payment of $10,600 at the 9% interest rate, which yields a maximum price you'd be willing to pay of $9,724.77.
Step-by-step explanation:
Calculating the Price of a Bond with a Lower Market Interest Rate
If the local water company has issued a $10,000 ten-year bond at a 6% interest rate, and you are considering purchasing it one year before maturity when the market interest rates are at 9%, you would expect to pay less than the face value of the bond. This is because the bond's fixed interest payments are less attractive when newly available bonds are offering a higher interest rate.
To calculate the price you would be willing to pay for this bond, you need to discount the bond's remaining cash flow, which is the final interest payment plus the $10,000 principal, back at the current market interest rate of 9%. The expected payments from the bond one year from now are $10,600 ($600 in interest plus the $10,000 principal). Using the formula for the present value of a single sum, the calculation would be:
Price = Expected Payment / (1 + Market Interest Rate)
Price = $10,600 / (1 + 0.09)
Price = $10,600 / 1.09
Price = $9,724.77
You therefore would not want to pay more than $9,724.77 for the bond.