The bachelor's thesis deals with optimizing personal income tax - specifically for the self-employed. The bachelor's thesis aims to evaluate several variations of the procedures within the taxpayer's tax record and the calculation of the amount of personal income tax for the current and immediately following tax year. The first is a theoretical part, consisting of specialist literature and tax laws. Theoretical terms are defined in this section, relating to personal income tax. This includes, for example, the tax, the tax base, the rate of tax, or the legislative procedures for determining the tax base and the subsequently calculated tax liability. The next part of this work introduces a specific tax entity. This describes the basic informa...