Purpose- In the process of reporting accounting information, the auditor’s objective is to detect possible misstatements and errors in accounting information. Audit evidence aids auditors in providing reasonable assurance about the quality of financial reporting. Studying the quality of family firms’ financial reporting is of higher importance relative to non-family firms due to lower risk of accounting manipulation. Therefore, the purpose of this paper is to examine the relationship between family ownership structure and financial reporting quality from an auditing perspective. Design/methodology/approach To analyze the research hypotheses, the authors use a sample data consisted of 221 companies listed on the Tehran Stock Exchange (including 52 family and 169 non-family firms) over a five-year span from 2011 to 2015. Findings Using multivariate regression analysis of panel data, our results indicate that audit risk in family firms is lower than their counterparts. Likewise, the findings are indicative of lower audit fees paid by family firms as compared to non-family ones. The authors also find that auditors put more effort in family firms and thus audit effort is more significant for these kinds of firms. Originality/value The study focuses on family ownership and financial reporting quality in a developing country like Iran and the results of the study may be beneficial to other developing nations, as Iran stock market possesses some unique features which are not normally prevailing in other equity markets, even in the Middle East.

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