The environment in which financial statements auditing is implemented, is complex and built upon inherently fragile foundations. On the one hand, auditor’ independence is one of the most important characteristics of providing independent audit services, and on the other hand, failure to adhere to it, is among the most important threats to independent audit profession. Many researchers have noted that the most important obstacles to auditors’ independence arise from financial issues. Fear of losing a client who pays for audit or non-audit service fees has a significant impact on an auditor's judgment. However, independence is, in fact, an abstract concept that cannot be observable directly and is often described as a mental state that is related to concepts such as impartiality, honesty, trust, and personality. On the other hand, "fear" has understandable concepts and meanings in the dictionary. However, while investigating the problem that many working auditors acknowledge it, using the information of financial statements and market and through identifying factors related to fear of losing a client, an empirical model has been proposed to measure it. For this purpose, the viewpoints of 14 academics and profession experts, the data from132 listed firms in Tehran Stock Exchange over the years 2005 to 2014, multivariate regression, factor analysis and two-sample t test were used. The investigations and reviews resulted in presenting a 17-variable model whose power was confirmed in supplementary studies. Presenting this model will lead to increased empirical research in the field of auditor’s independence, and subsequently, increased knowledge in the field. Also, this model can be used by audit profession to explain the determinants of fear of losing clients. Moreover, this model could help develop the literature on auditing in general, and could contribute to auditors’ quality, independence, and transfer in particular.