Contemporary companies evolve in a dynamic economic environment imposed by the increased economic, scientific and technical competitiveness. In this complex environment, companies are constrained to focus their efforts on adaptation and development. As a means of concentration, taking control of an existing company or creating a new one has resulted in the establishment of groups of companies, whose occurrence is related to the adoption of an external development strategy. In the complex group structures, the consolidated financial statements should be prepared using different techniques, such as multi-level consolidation or direct consolidation.