To provide a fixed contributory type pension simulation system that can be presented in specifics in an easily understandable manner by applying the effects of a taxation system, in the case of using a fixed contributory type pension system to each other.

This system is provided with a fixed contributory type pension effect presenting means 1, which respectively calculates and displays the total sums of yearly income reduction amount corresponding to a programmed contributed amount up to the retirement year, the total sums of yearly non-taxable amount with respect to operation profit corresponding to the programmed contributed amount and a perspective operation interest rate up to the retirement year and the total sums of yearly retirement preparation amount obtained, by operating the fixed contributory type pension including the income reduction amount and the non-taxable amount up to the retirement year on the basis of each data of inputted personal attribute data, the programmed contributed amount to the fixed contributory type pension and the prospective operation interest rate of the fixed contributory type pension.