PURPOSE : The international integrated reporting framework encourages organisations to disclose material information that affects their ability to create value. This paper aims to investigate the challenges and techniques preparers of integrated reports use to determine the materiality of non-financial information. DESIGN/METHODOLOGY/APPROACH : This paper uses an exploratory interpretive thematic analysis and an archival research approach. Qualitative semi-structured interviews were conducted with 55 integrated reporting (IR) preparers in 12 publicly listed companies, supported by the perusal of the companies’ integrated annual reports over a three-year period. FINDINGS : IR preparers find materiality determination for non-financial infor...