The purpose of this paper is to identify the perceptions and differences in the perceptions between the auditors on the assurance service of integrated reporting in Sri Lankan context. This research mainly focuses on the importance of assuring the IR, form and content of an audit report on IR, challenges of assuring IR and future of the IR assurance. The population of the research consists of auditors who provide assurance services on Integrated Reporting in Sri Lanka. Two hundred questionnaires were sent to assurance experts through the emails generating 115 usable responses. The analysis is done using non-parametric statistics which is the Kruskal-Wallis test. Empirical results prove that it is necessary to have an external assurance on an entity’s integrated report and it is important to audit the complete content of integrated reporting. When comparing the auditors' perceptions based on their respective rankings, the results indicate that there is a noticeable difference in how auditors view the necessity of Integrated Reporting (IR) assurance and their opinions on the appropriate level of assurance. Limiting the study to a single jurisdiction is an inherent limitation. In this paper differences and similarities are evaluated based on only the rank of the assurance providers. The findings of this research could be valuable for the International Integrated Reporting Council, the International Auditing and Assurance Standards Board, and other regulatory agencies and useful for academics and practitioners interested in providing assurance on IR.
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