Marziyeh Mashayekhi - Master of Industrial Management
Fatemeh Mashayekhi - Master of Economics Planning and Development
Mohammad Ali Motaman - Preceptor of Management of Shiraz Islamic Azad University

The two principal sources for a business firm are equity and debt. Since the objective of financial management is to maximize the value of the firm, the key issue is to find the relationship between capital structure and firm value. This study aims to assess the factors determining the petrochemical industry policy on the Tehran Stock Exchange, Iran. This study considers the impact of three variables, financial leverage, dividence policy, profitability, by using an unbalanced panel dataset of between the years of 2005 and 2011. Using the OLS and the dynamic panel regressions. The results of study revealed that the financial leverage policies are negatively and dividence policy positive related with the firm's value

dividend policy, Firm Value, Tehran Stock Exchange