The IKZE calculator is a tool for savers or those interested in saving as part of the Individual Retirement Security Account (IKZE). The calculator allows you to estimate the amount of tax relief when settling with the tax office, which can be achieved by depositing funds in IKZE. Moreover, after the user has defined several variables, the calculator calculates, among others, the amount of capital accumulated on IKZE, broken down into payments made and potential profit, and the amount of potential private retirement income from IKZE during retirement. Finally, it is also possible to generate a personalized calculation report in the form of a PDF file, thanks to which you can easily perform simulations and analyzes under various assumptions.