This thesis is focused on shareholder's equity of joint stock company in accordance with the relevant valid legislation. At first it shortly deals with the key features of joint stock company, its establishment and its later formation. Emphasis is placed particularly on the analysis of individual components of shareholder's equity in compliance with the balance sheet items, the mutual relations between them and on ways of reducing and raising authorized capital. The last part presents connection between the issue of deferred tax and joint stock company equity. Direct effect of deferred tax on equity is explained in terms of the first recognition of deferred tax following the introduction of Czech Accounting Standard for Businesses No. 003 a...