The differences between the IFRS and national accounting systems in the European countries is based on the different financial reporting orientation arising from the different economic and financial environment. Financial statements prepared in accordance with IFRS provide a different set of data in comparison with those prepared in accordance with the national accounting standards. This data is used to calculate financial indicators, that are used for the assesment of the financial performance and other economic dimensions of a firm. The IFRS implementation will change the value of these indicators and the charakteristics of a firm. The aim of this paper is to present research findings, what changes of the indicators brings the transition to IFRS in the Czech Republic