Resumen de Studying the impact of income tax on the relationship between r&d investment and financial constraints in companies listed on tehran stock exchange
Sedigheh Toutian Esfahani, Reza Yarifard Sedigheh, Hassan Mokhtari Moghari
The purpose of the study is to examine the impact of income tax on the relationship between R&D investment and financial constraints in companies enlisted on Tehran stock exchange. Companies enlisted on Tehran stock exchange during 2011-2015 are regarded as locative and time dimension. 118 companies are selected by eliminated systematic method as sample. In this study, R&D investment was considered as independent variable and financial constraints was intended as dependent variable and income tax was taken into consideration as moderating variable. This is a kind of descriptive-correlative study. Regarding data nature, this is a kind of quantitative study and regarding aim, this is a kind of applied study. Jarque-Bra test is done for normality testing. Regression significance and coefficient significance tests were considered in order to investigate significance in regression pattern. Heterogenity, F-limer and Husman tests were considered as regression pre-test as well. The results showed that R&D investment affected on financial constraints in companies enlisted in Tehran stock exchange. Also, income tax affected the relationship between R&D investment and financial constraints in companies enlisted in Tehran stock exchange.
