M.A. Thesis:

Information Asymmerty and Tax Avoidance

The aim of this research was to study the relationship between Information asymmetry and tax avoidance in the companies is listed on the Tehran Stock Exchange. A total of 85 companies have been chosen as samples over the years 2010-2014. The collected data regarding the variables was examined by Multivariate Regression. The dependent variable was the tax avoidance. In order to measure it, two criteria of the cash effective tax rate and the difference between accounting profit and taxable profit were used. The results revealed there is a significant positive relationship between the information asymmetry and the cash effective tax rate. There is a significant negative relationship between Information asymmetry and the difference accounting profit and taxable profit. In companies with more Information transparency, more institutional shareholders and more independent Board of Directors, on the basis of two criteria of cash effective tax rate and the difference between accounting profit and taxable profit, there is no stronger relationship between the Information asymmetry and tax avoidance. Keywords: Information asymmetry, tax avoidance, Information transparency, Institutional shareholders, independent Board of Directors

Keywords: : Information asymmetry, tax avoidance, Information transparency, Institutional shareholder