Capital efficiency is conceptually achieved when companies invest only in projects with a positive net present value. The purpose of this study is to investigate the effect of credit and remuneration of the board of directors on the efficiency of investment in companies listed on the stock exchange. In terms of the type of purpose, the research is part of applied research and the research method is cause and effect in terms of nature and content. The research was conducted in the framework of deductive-inductive reasoning and panel analysis was used to analyze the hypotheses. To collect information, data from 120 companies listed on the Tehran Stock Exchange in the period 1390-1397 have been used. The results of this study show that the remuneration of the board of directors, the independence of the board of directors and the performance of the board of directors have a positive and significant effect on investment efficiency. However, the effect of the term of the board on the efficiency of investment is not significant.