This diploma paper is focused on the problems of internal audits. The goal of the paper is to inform readers on the profession of the internal auditor. The paper is divided into two parts. In the first part background information is provided on the origin and development of the auditor profession, kinds of audit, and the relationship between external and internal audits. Next in this part is an overview of the internal audit; namely its development, requirements on the person of the internal auditor, law concerning internal audits in the Czech Republic and the procedures of internal auditing starting with risk analysis, planning and realization of the internal audit and concluding with the reporting of results and assessment of the internal...