The purpose of this paper is to study the suitability of loan loss provision (LLP) of Iranian banks when the industry is dealing with earning management behaviors. This goal has been reached using a two-step approach to analyze the discretionary component of LLP and then examine the relevant factors. This empirical study uses an unbalanced panel data of 15 listed banks during the 2006-2017 period. Estimating Iranian banks’ discretionary loan loss provision and ranking them according to the average of DLLP is one of our findings. The results show that there is a significant relationship between DLLP and earning management, capital management, and external financing.