The Effect of Iranian Accounting Standard on Conservatism of Accounting Information

This study examines the effects of applying the accounting standards issued by the Iranian Audit Organization، on conservative accounting information for the period before and after adopting accounting standards. In this study to quantify the level of conservative، Basu’s model (1997) is used. Financial data of 81 companies listed in Tehran Stock Exchange for the year 1996 to 2011 is collected. The research hypothesis is tested using multiple regression and Kramer statistical tests. Empirical findings suggest that the quality of accounting information from conservative view is not significantly different in the period before and after adoption of national accounting standards. In other words، adopting of national accounting standards does not improve the quality of accounting information، using conservatism measure.