The Measure of Concentration of Audit Markets in Public Interest Entities in the Czech Republic and Slovakia

Abstract The aim of the paper is to determine whether audit market for public interest entities in Czech and Slovak Republic has been still concentrated subsequently measure concentration. article consists data including information from that perform statutory Slovakia on timeline 2017–2020. On level competition identified by Herfindahl-Hirschman Index CR4 Index, using revenues as a basis calculating shares. results show markets have highly concentrated, with higher concentration (HHI 0.25) than 0.23). Big Four had share between 90% (Slovakia) 95% (Czech Republic) both countries, four firms providing up 70% all audits within entities. At same time, KPMG PWC strongest position. provides new evidence context development recent years, thus can be subsequent discussion consequences associated high