Investigating the effect of credit rating on the profitability of Iranian stock exchange companies using multiple regression

Profitability is one of the most important indicators for evaluating companies. In this research, after adding the factor of credit rating to the literature of factors affecting profitability in addition to liquidity variables, financial leverage, sales growth, company size and tax rate as factors influencing the profitability of stock exchange companies from multiple regression to analyze and analysis and measurement of the effect of variables on profitability have been used. The research period is 2019. The obtained results show that the variables of credit rating and financial leverage have a positive effect on profitability, and credit rating is a key variable in the factors affecting the profitability of stock exchange companies. While liquidity has a negative and significant effect on the profits of companies. Also, there is no significant relationship between the financial leverage variables of tax rate and profitability.