Survey of Efficiency of Modern and Traditional Liquidity Indexes in Forecasting Income Smoothing of Companies

The purpose of this study is to investigate the role of modern and traditional liquidity indexes in forecasting Income Smoothing of the companies listed in Tehran Stock Exchange. In this study five hypotheses were introduced. A bi-faceted classification was used to divide the participant companies into ‘income smoother’ and ‘non-income smoother’ groups. The data sample is restricted to 74 companies during the years 2000-2010. Using SPSS16 program for hypotheses testing, the results indicated that there is significant relationship between traditional indexes and size of companies with income smoothing, and that the most important effective item is the level of inventory in the companies