Abstract: The present invention discloses a method and apparatus for converting constant-dollar financial instruments into equivalent nominal-dollar instruments. After the optimal form or forms of constant-dollar financial instruments have been determined for the purposes of financing a specific enterprise or activity, the data describing the constant-dollar financial instrument or instruments are entered into the system together with the specified inflation measure and the desired frequency of adjustments to the nominal-dollar interest rate and to the nominal-dollar payments. The data processing system puts the specified constant-dollar instrument or instruments into a standardized format and, given the desired frequency of inflation adjustments to be made to the nominal-dollar interest rate and to the nominal-dollar payments, the system specifies the equivalent nominal-dollar instrument or instruments in a standardized format.