This master thesis deals with the issues and scope of business accounting. The emphasis is placed on the accounting of the business combination, consolidation of the financial statements at the date of merger and after the merger date. At the end of the analysis, a comparison of consolidated and unconsolidated financial statement was made using financial indicators, which demonstrated the thesis of varying degrees of importance and the quality of information. Theoretical part of the master thesis gives the main legislative basis for the preparation of financial statements through the application of relevant laws, regulations and accounting standards. The empirical part deals with the issue of accounting for business combinations and the problem of drafting consolidated financial statements on a group example. The final part of the paper contains an analysis and calculation of the financial indicators from the data available in the separate and consolidated financial statements on the basis of which the difference in the values of the information deriving from the two types of financial statements is presented. All the above described and stated leads to the conclusion that the consolidated financial statements provide better quality information to the users of the financial statements.