A Study on the Effect of Voluntary Disclosure Quality on Independent Auditors’ Acceptable Opinion of ListedCompanies in Tehran Stock Exchange

Abstract: This study examines the quality of voluntary disclosure on the opinion of theindependent auditors of listed companies in Tehran Stock Exchange. In line with this goal, all thelisted companies in Tehran Stock Exchange that had provided the financial statements (balancesheet, loss and profit statement) and the required information in the years 2006 to 2011 werestudied. A total of 123 companies from various industries were selected. To test the hypotheses,multiple variables regression (Inter method) was used and their statistical significance took placeusing t and F statistics. Also, in order to test the model autocorrelation Durbin-Watson test wasemployed. Research results show that there is no significant relationship between the quality ofvoluntary disclosure and accounting firm type, and the independent auditors acceptable opinionpresentation. But there is a significant relationship between firm size and Board of directors’independence.

Keywords:

Voluntary disclosure , Independent auditors acceptable opinion , Firm size , Board ofdirectors’ independence , Accounting firm type