This happens when the marginal income tax rate falls. Capital appreciation: Bond prices can rise for several reasons, including a drop in interest rates and an improvement in the credit standing of the issuer.Learn about how investors should evaluate bond performance. See how the maturity of a bond can impact its exposure to interest rate risk. A demand for any particular bond will be 0 if its price is above the present value and infinity if it's below. The increase in the demand will lead to higher price but the interest rate tend to fall because the benefit will be received when the interest rate decrease. A bond quote is the price at which a bond is trading. The demand curve for bonds, as for most goods, slopes downward; the supply curve slopes upward in the usual fashion. There is little mystery here. 2025 Corporate Bond Outlook.