Critical analysis of internal audit processes carried out by Brazilian companies

PurposeThe main objective of this study is to analyze internal audit processes performed by Brazilian companies considering ISO 19011:2018 guidelines.Design/methodology/approachThe methodological strategy used was a survey conducted with professionals who assist audit processes of Brazilian companies from different segments. Eight main aspects presented by ISO 19011:2018 were evaluated, and data were analysed through fuzzy technique for order of preference by similarity to ideal solution (TOPSIS). These aspects were ranked, and it was possible to identify those most critical.FindingsThree aspects that are evidenced as critical in the study are as follows (1) to correctly establish the objectives to be achieved and the extension of internal audits program; (2) to correctly assess risks and opportunities that can affect internal audits implementation, defining actions for better results and (3) to monitor, critically analyze and improve the internal audit program.Originality/valueThis study has an exploratory character, and the information presented here can be useful for market professionals and researchers interested in the subject. No similar study was found in the literature.