Treasury Indexed Bond. This is a medium to long-term security issued in the form of a Capital Indexed Bond. The nominal value of the security, on which a fixed rate of interest applies, varies over time according to movements in the Consumer Price Index. At maturity, the adjusted capital value of the Bonds is paid. In the past, Treasury Indexed Bonds were also issued in the form of Interest Indexed Bonds, some of which are yet to mature. These Bonds carry a nominal rate of interest, which varies over time according to movements in the Consumer Price Index, and are repayable at face value on maturity.