Purpose This paper aims to investigate the relationship between the proprietary costs of financial reporting and the comparability of financial statements with the interactive role of information asymmetry. Design/methodology/approach Data were selected from the information of all the listed companies on the Tehran stock exchange from 2011 to 2021, based on 781 observations. A multiple regression model is used to analyze data. Findings Results convey a significant relationship between proprietary costs of financial reporting and comparability of financial statements. Furthermore, information asymmetry has a significant impact on the relationship between proprietary costs of financial reporting and the comparability of financial statements.

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